# DBS-01 — White Space Database Specifications



Issue 2
January 2020

## Preface

Database Specifications DBS-01, issue 2, White Space Database Specifications, replaces White Space Database Specifications, issue 1.

List of changes:

1. White space frequency bands have been revised based on SMSE-003-19, Decision on the Technical and Policy Framework for White Space Devices.
2. In addition to the list of available channels, the white space database (WSDB) will also provide the associated maximum power levels on which a white space device (WSD) may operate.
3. Editorial changes and clarifications have been made to improve the standard.
4. Definition for “less congested areas” has been added.
5. The use of the term “Television White Space (TVWS)” has been revised to “White Space (WS).” This reflects the expanded and more general use of spectrum beyond the former TV spectrum.
6. Updated the tables of minimum separation distances between WSDs and TV protected contours to facilitate the operation of WSDs’ power levels up to 10 Watts equivalent isotropically radiated power (e.i.r.p.), and for various power levels below 4 Watts e.i.r.p. The minimum separation distances have also been revised to address minimum separation distances for antenna height below 30 m (outside the F curve range).
7. Allow a higher effective height above average terrain (EHAAT), directional height above average terrain (dirHAAT) and antenna height above ground level (AGL). The minimum separation distances have been revised in light of those changes.
8. A transition period has been defined to facilitate the transition from DBS-01, issue 1 requirements to DBS-01, issue 2 requirements.
9. The minimum separation distances must now include the difference of geo-location’s uncertainty if above the reference ±50 m uncertainty.

Issued under the authority of
the Minister of Innovation, Science and Industry

________________
Martin Proulx
Director General
Engineering, Planning and Standards Branch

## List of acronyms

• AGL — Above ground level
• AMSL — Above mean sea level
• BDU — Broadcasting distribution undertaking
• CPE — Customer premises equipment
• DTV — Digital television
• dirHAAT — Directional height above average terrain
• EHAAT — Effective height above average terrain
• ERP — Effective radiated power (dipole)
• ENG — Electronic news gathering
• e.i.r.p. — Equivalent isotropically radiated power
• HAAT — Height above average terrain
• ISED — Innovation, Science and Economic Development Canada
• ISED ID — Innovation, Science and Economic Development Canada Identification Number
• ISP — Internet service provider
• LP — Low-power
• LPA — Low-power apparatus
• RRBS — Remote rural broadband systems
• UHF — Ultra high frequency
• VHF — Very high frequency
• VLP — Very low power
• WS — White space
• WSDB — White space database
• WSDBA — White space database administrator
• WSD — White space device

## 1. Scope

DBS-01, issue 2, White Space Database Specifications, sets out the technical requirements for the designation of a database capable of identifying available channels for use by white space devices (WSD) in the white space frequency bands (i.e. 54-72 MHz, 76-88 MHz, 174-216 MHz, 470-608 MHz and 657-663 MHz).

## 2. Coming into force and transition period

This document will come into force upon its publication on the Innovation, Science and Economic Development Canada’s (ISED) Spectrum management and telecommunications website.

Within six months from the date of publication of this standard, a white space database administrator (WSDBA) having an existing white space database (WSDB) designation from ISED shall submit an application to ISED demonstrating compliance with the current issue of this standard. Upon reception of the application, ISED will review and assess compliance with the current issue of this standard. In order to maintain its designation, the WSDBA shall address any concerns identified within 30 days of being informed by ISED.

## 3. New white space database designations

New WSDBs submitted to ISED for designation shall be required to comply with the requirements of DBS-01, issue 2. Upon reception of an application for designation, ISED will review and assess compliance to the current issue of this standard.

## 4. Purpose and application

A WSDB is a database system recognized by ISED. This database provides lists of available channels and the corresponding maximum permitted power for each available channel to white space devices (WSDs), while ensuring protection of all licensed services and systems operating in the white space frequency bands. WSDs are licence-exempt, low-power wireless devices that operate on a no-protection, no-interference basis for licensees operating in the same white space frequency bands. A WSDB uses information provided by a WSD, such as geolocation data, to dynamically manage their access to spectrum.

White spaces (WSs) are the unused portions of the spectrum in the very high frequency (VHF) and ultra high frequency (UHF) bands that are available for radiocommunication systems, at a specific time and in a given geographic area.

Even if a WSDB meets the requirements of this document, ISED may impose corrective measures whenever harmful interference to licensed services or systems is caused by the operation of WSDs.

## 5. White space contact information

Contact ISED directly by email in case of interference or concerns regarding calculations performed by authorized WSDBs, or to resolve issues and address any disagreements.

## 6. Definitions

Above ground level (AGL): The height of the centre of radiation of the antenna above the ground directly below the antenna.

Adjacent channel: A channel that is immediately adjacent to the protected channel.

Available channels: A range of frequencies available for use by white space devices.

Dynamic spectrum access: A technique by which a radio system dynamically adapts to the local radio spectrum environment in order to determine, and then access, available channels at specific locations.

Effective height above average terrain (EHAAT): The average of the height above average terrain values determined for eight standard radials spaced every 45 degrees of azimuth starting from true north.

Fixed white space device: A device that transmits and/or receives radiocommunication signals at a specified fixed location. The fixed device selects potential operational frequencies from a list of available channels, as provided by a WSDB.

Geolocation capability: The ability of a white space device to determine its geographic coordinates within a required level of accuracy and confidence level.

Height above average terrain (HAAT): The height of the centre of radiation of the antenna above the average elevation of the terrain between 3 km and 16 km at 100 m intervals (in the case of low-power TV, distances from 0 to 5 km should be used instead) from the antenna along a particular radial. Average elevation of the terrain is calculated based on the Canadian Digital Elevation Model or Geobase 50K Canadian Digital Elevation Data 1 arc-second data for Canada, the United States Geological Survey National Elevation Dataset (USGS NED) 1 arc-second data for the continental U.S., and the NED 2 arc-second for Alaska. Determination of HAAT does not stop at the border or over bodies of water. Each HAAT determination shall incorporate the full 3 to 16 km radial segment and shall not be truncated at the border nor over bodies of water.

Height above average terrain in the direction of the affected TV station (dirHAAT): The largest of the HAAT values determined for standard radials spaced every 5 degrees of azimuth within an arc of ±22.5 degrees from a line between the WSD location and the closest point on the contour in the direction of the affected TV transmitter.

Innovation, Science and Economic Development Canada Identification (ISED ID): The ISED certification number of a WSD.

Less congested areas: Geographic areas where at least half of the TV channels are unused for broadcast and other protected services and are available for white space device use.

Low-power apparatus (LPA): Examples of LPA include wireless microphones and wireless cameras, systems for cue and control communications, as well as synchronization of video camera signals. Low-power FM transmitters may also be included in this category, but their use is restricted and is only authorized for operation under specific conditions. LPA may be limited to a particular location (fixed) or used on a Canada-wide or province-wide basis (Electronic News Gathering (ENG) type), depending on its licence.

Mode I personal/portable device: A personal/portable WSD that does not use an internal geolocation capability and does not directly access a WSDB to obtain a list of available radio frequency channels. A mode I personal/portable device must obtain a list of available channels on which it may operate through an indirect connection via either a fixed device or a mode II personal/portable device. A mode I personal/portable device does not initiate a network of WSDs nor provide a list of available radio frequency channels to another mode I device for use by such a device.

Mode II personal/portable device: A personal/portable WSD that uses internal geolocation and accesses a WSDB for a list of available radio frequency channels. Access to the database may be through a direct connection to the Internet or through an indirect connection via a fixed or other mode II WSD. A mode II device may provide its lists of available radio frequency channels to another mobile device for use by that device.

Personal/portable WSD: A personal/portable WSD is a device that transmits and/or receives radiocommunication signals while stationary or in motion at unspecified fixed points.

Protected contour: A contour within which a station and its associated receivers or remote stations have protection from other devices operating in the same frequency bands and which might interfere with the station.

Remote rural broadband systems (RRBS): Fixed systems that provide wireless Internet access for subscriber-based broadband Internet applications, authorized to operate on a licensed basis on the same frequency bands as WSDs.

Separation contour: A contour resulting from the sum of the protected contour and the separation distance which together define a new and larger contour.

Separation distance: The minimum distance between a WSD and a station’s protected contour (for broadcasting, RRBS, etc.) at which a WSD may operate.

Taboo channel: A channel that is not immediately adjacent to the protected channel and is separated by a defined channel separation from the protected channel. For analog TV, these channels include N±2, N±3, N±4, N±7, N±8, N+14, N+15. For digital TV, these channels include N±2, N±3, N±4.

TV receive site: A location where signals are received for retransmission or monitoring, including TV studio and transmitter locations, relay points and broadcasting distribution undertaking (BDU) head-ends outside the edge of the protected contours of a TV station. This includes receive sites for a full power TV station, a TV broadcaster or a low-power TV station (i.e. an LP or a very low power (VLP) transmitter, translator or booster transmitter) where signals are received over the air.

White space (WS): Part of the spectrum that is, or has become, available for radiocommunication by radio systems at a specific time period and in a given geographical area.

White space database (WSDB): An ISED-recognized third party database that maintains records of all licensed services and systems approved to operate within WS frequency bands. The WSDB determines available channels at a specific time and geographic location, and provides lists of available channels to WSDs.

White space database administrator (WSDBA): A third party service provider designated by ISED to administer a WSDB within Canada.

White space device (WSD): A radio apparatus that operates in the WS frequency bands using dynamic spectrum access techniques.

## 8. White space frequency bands/channels

The frequency bands/channels authorized for use by WSDs are shown in table 1. A WSDB shall only provide available channels to a WSD from among those listed in table 1 and as per the requirements of this standard.

Table 1: Overview of authorized white space frequency bands/channels
Frequency bands
(MHz)
Channel name Incumbent services Personal/
Portable
WSD
Fixed
WSD
54-60 TV channel 2 TV Broadcasting, LPA Not permitted
60-72 TV Channels
3-4
76-88 TV Channels
5-6
174-216 TV Channels
7-13
470-512 TV Channels 14-20 TV Broadcasting, LPA
512-608 TV Channels 21-36 TV Broadcasting, LPA,
RRBS
608-614 TV channel 37* Medical telemetry and radio astronomy Not permitted Not permitted
614-617 600 MHz guard band LPA Not permitted Not permitted
617-652 600 MHz mobile downlink Mobile services Not permitted Not permitted
652-657 600 MHz duplex gap LPA Not permitted Not permitted
657-663 600 MHz duplex gap LPA Not permitted
663-698 600 MHz mobile uplink Mobile services Not permitted Not permitted

*Channel 37 (608-614 MHz) has been excluded to protect the operation of radio astronomy and wireless medical telemetry.

## 9. WSDB access to ISED’s database

The ISED database information may be accessed from the white space data extract section of the Spectrum Management System Data webpage. Additional information on access to and interpretation of ISED’s database information can also be found in the CPC-4-1-01 document.

Information on licensed systems and services is available in ISED’s licensing, certification and broadcasting databases.

### 9.1 WSDB licensing information update from ISED database

At a minimum, the WSDBs shall retrieve updated licensing information from the ISED database once every 24 hours.

### 9.2 WSDB failure to access ISED database

Should the ISED database not be available, additional attempts to retrieve information from the ISED database shall be made at least once every 4 hours. If more than 12 hours has elapsed without the WSDBA being able to retrieve this information, the WSDBA shall contact ISED regarding the unsuccessful access to the ISED database.

Thereafter, a WSDB may continue to operate for 7 days, from the last successful access, unless otherwise indicated by ISED. After those 7 days, the WSDBA shall only operate in accordance with instructions provided by ISED. It is anticipated that the latter approach (i.e. contacting ISED for further instructions) would only occur in rare circumstances.

Following unsuccessful access to the ISED database, and thereafter obtaining a successful connection, the WSDB shall notify ISED of the successful access.

### 9.3 Information required for TV broadcasting stations

A WSDB shall obtain the following information from ISED’s database for TV broadcasting stations to be protected from WSDs:

• Transmitter coordinates – latitude
• Transmitter coordinates – longitude
• Antenna height above ground level (AGL) of the radiating centre of the transmitting antenna
• Ground elevation above mean sea level (AMSL)
• Horizontal transmit antenna pattern (if antenna is directional)
• Centre frequency
• Station call sign
• Nature of the station (i.e. analog station or digital station)

### 9.4 Information required for remote rural broadband systems (RRBS) base stations

A WSDB shall obtain the following information from ISED’s database for RRBS base stations to be protected from WSDs:

• Transmitter coordinates – latitude
• Transmitter coordinates – longitude
• ERP
• Antenna height AGL of the radiating centre of the transmitting antenna
• Site elevation AMSL
• Channel numbers (both downstream (transmit) and upstream (receive) channels)
• Station call sign

### 9.5 Information required for licensed low-power apparatus (LPA) and developmental licences

A WSDB shall obtain the following information from ISED’s database for licensed LPA and developmental licences to be protected from WSDs:

• Transmitter coordinates – latitude
• Transmitter coordinates – longitude
• Licence type (LPA or developmental)

## 10. Systems and services registration

A WSDB shall allow for the collection of the information listed in the sub-sections below for systems and services that are not included in the ISED databases.

Online registration of systems and services identified in the sub-sections below can be done by directly accessing designated WSDBs from the ISED website.

### 10.1 Fixed WSD registration

A WSDB shall have a registration process for fixed WSD users. Relevant information is collected from users to help with investigations of harmful interference.

A WSDB shall obtain the following information from fixed WSD users:

• Name of the individual or business that owns the device (e.g. the Internet Service Provider (ISP) providing the service not the ISP’s customers)
• Name of a contact person responsible for resolving interference issues related to the device’s operation
• Mailing address for the contact person
• Email address for the contact person
• Phone number for the contact person
• Antenna height AGL

Once registered, information shall be considered public.

Prior to registering a WSD for the first time, a WSDB shall verify that the above-mentioned registration information is complete and that a verified email address has been provided by the fixed WSD user.

A WSDB shall provide a registration process for TV receive sites that qualify for protection under section 13.2.1.

A WSDB shall obtain the following registration information from TV receive site users wishing to be protected from WSDs:

• Names of the individuals or businesses responsible for each TV receive site
• Mailing address for the contact person
• Email address for the contact person
• Phone number for the contact person
• Coordinates of the location of the TV receive site
• Channels received at the TV receive site and their call signs
• Call sign of the transmitter associated with the receive site or the cable operation number for cable TV head-ends

Once registered, information shall be considered public.

A WSDB shall confirm that the TV receive site being registered is associated with an ISED-authorized call sign.

A WSDB shall confirm that the TV receive site or cable TV head-end being registered resides no farther than 80 km outside the nearest edge of an associated protected contour.

If the registration information cannot be validated, the WSDB shall reject the registration and return a message to the user to contact ISED for authorization.

### 10.3 Licensed LPA registration information

• A WSDB shall obtain the following information from any licensed LPA wishing to be protected from WSDs:

• Name of the individual or business responsible for an LPA
• Mailing address for the contact person
• Email address for the contact person
• Phone number for the contact person
• Geographical coordinates of the location or area(s) of operation where the LPA will be used
• Centre frequency (MHz) of the channel(s) used by the LPA at the indicated site
• Period of operation (i.e. period of use) of the channels: specific hours, days, weeks and/or months when the LPA will be used (note that on dates when an LPA is not in use, the site will not be offered protection from WSDs)
• The LPA’s licence number
• A WSDB shall confirm that an LPA user that wishes to register its time-of-use scheduling information in the database has a valid licence according to the ISED database. If none exists, the WSDB shall reject the registration of the LPA, and return a message to the user to contact ISED for a licence.

• A WSDB shall only allow the registration of LPA operations within geographical areas and frequencies specified on the licence. The period of registration shall be limited to less than 1 year.

• A WSDB shall allow a registration to establish a recurring event that reflects the same time period as provided in the period of operation of licensed LPA.

Once registered, information shall be considered public.

#### 10.3.1 Area of operation of LPA

As per the geographical coordinates of the location or area(s) of operation of a licensed LPA, the maximum area of operation licensed will consist of a radius of 500 m for a fixed location. However, where large areas of operation and coverage are required and permitted by the licence, an LPA’s area of operation shall be  defined as a point and radius area or as a quadrilateral area, as chosen by the user.

As part of the registration, and in cases where the event covers a large geographical area, the registration shall allow up to the maximum number of points prescribed below, as applicable for the given option. Additional registrations may be required to ensure the protection of the full geographical area.

• Point and radius option: The operational location(s) of the LPA shall be defined using a maximum of 25 geographical points at any one time. Each geographical point shall have a maximum radius of operation of 500 m around the particular point; or
• Quadrilateral option: The operational location(s) of the LPA shall be defined based on the edges of straight lines connecting the vertices (geographic points) of the quadrilateral.
1. Each quadrilateral must be specified with four geographic points and the distance between any two adjacent points shall be limited to 3 km.
2. In cases where an LPA occupies a larger area, up to four non-contiguous quadrilaterals may be registered.

### 10.4 Developmental licences

A WSDB shall allow developmental licence users to register their scheduling and location information. Collected data and validation requirements for LPA are specified in section 10.3 above.

## 11. Denied list

A WSDB shall maintain a list of devices that are not authorized to operate with WSDBs. These devices shall not be permitted to gain access to WS channels. A WSDB shall enable devices on the denied list to be identified by any of the following parameters:

• Hardware Version Identification Number
• Firmware Version Identification Number
• product marketing name or certification number

Devices will be added to or removed from the denied list only after receiving formal direction from ISED. It is anticipated that the denied list will be rarely used and there is no requirement for an external interface or automated update of this list.

## 12. WSD power limits

A WSDB shall not provide any available channels to a fixed WSD operating with an equivalent isotropically radiated power (e.i.r.p.) level greater than 10 W (40 dBm). Furthermore, in areas other than less congested areas, a WSDB shall not provide any available channels to a fixed WSD operating with an e.i.r.p. level greater than 4 W (36 dBm). A WSDB shall not provide a list of available channels to a personal/portable WSD operating with an e.i.r.p. level greater than 100 mW (20 dBm).

## 13. Protection criteria for TV broadcasting stations

A WSDB shall only return available channels according to the protection criteria set out in the remainder of this document.

### 13.1 Protection criteria for over-the-air TV broadcasting stations

A WSDB shall protect active, over-the-air TV broadcasting stations, as indicated by the ISED database.

A WSDB shall protect all types of TV broadcasting stations, including active analog and digital TV stations. This includes full service TV stations, TV re-broadcasters and low-power TV stations (i.e. including LP TV translator and very low power (VLP) TV translators and booster stations).

### 13.2 Protection contours for TV broadcasting stations

To protect fixed TV services from white space devices, a WSDB shall calculate protected contours for TV broadcasting stations based on the propagation models and electromagnetic field strength levels specified in table 2.

Table 2: Thresholds for the protected contours of TV broadcasting stations
Type of TV station  TV channel Thresholds for TV broadcasting station-protected contour
(dBµV/m)
Propagation curve*
Analog (full and low-power) Low VHF (Ch. 2-6) 47 F(50,50)
High VHF (Ch. 7-13) 56 F(50,50)
UHF (Ch. 14-51) 64-20log (615/F**) F(50,50)
Digital (full and low-power) Low VHF (Ch. 2-6) 28 F(50,90)
High VHF (Ch. 7-13) 36 F(50,90)
UHF (Ch. 14-51) 41-20log (615/F**) F(50,90)

**F is the centre frequency of the TV channel in MHz.

#### 13.2.1 Protection of registered TV receive sites

A WSDB shall protect TV receive sites outside the protected contour, where signals are received for retransmission or monitoring. This includes TV studio and transmitter locations, relay points and broadcasting distribution undertaking (BDU) head-ends, provided that such sites are no farther than 80 km outside the nearest edge of the protected contours of the station. In order to receive protection, a TV receive site must be registered with a WSDB as described in section 10.2.

The protection area of the receive-sites from WSDs shall encompass an arc of ± 30 degrees from a line between a registered receive-site and the contour of the TV station being received, in the direction of the station's transmitter at a distance of up to 80 km from the nearest edge of the protected contour of the received TV station for co-channel operation and up to 20 km from the registered receive-site for adjacent channel operation except that the protection distance shall not exceed the distance from the receive site to the protected contour. Outside of this ± 30-degree arc, WSDs may not operate within 8 km from the receive site for co-channel operation and within 2 km from the receive site for adjacent channel operation.

For the purpose of this section, a TV station whose signals are received over the air may include a full power TV station, a TV re-broadcaster or a low-power TV station (i.e. LP or VLP transmitter, translator or booster transmitter).

The distance of the TV transmitter to its protected contour shall be determined using the calculation procedure detailed in annex B.

### 13.3 Minimum separation distance between a WSD and a TV broadcasting station protected contour

A WSDB shall only return available channels according to the criteria set out in this section and its sub-sections.

#### 13.3.1 Maximum height for fixed WSDs

A WSDB shall not provide any channel on the list of available channels to a fixed WSD if its effective height above average terrain (EHAAT) exceeds 700 m or its antenna height AGL exceeds 100 m. Furthermore, in areas other than less congested areas, a WSDB shall not provide any available channels to a fixed WSD if its antenna height AGL exceeds 30 m.

In the case of a fixed WSD requesting available channels for a mode I personal/portable WSD, a WSDB shall not provide any available channels for the mode I device if the fixed WSD’s EHAAT exceeds 106 m.

If the fixed WSD reports height as AMSL, the WSDB shall convert AMSL to antenna height AGL as follows:

• determine the site elevation for the reported fixed WSD geographic coordinates, using the same method used to determine elevation for HAAT calculations
• subtract the site elevation from the reported AMSL, which will produce an antenna height AGL value (if the resulting antenna height AGL is less than 1.5 m, set the antenna height AGL value to 1.5 m)

When applying tables D1 and D2 of annex D, where a database is capable of calculating the directional height above average terrain (dirHAAT) of the affected TV station, this value may be used instead of the EHAAT.

#### 13.3.2 Minimum separation distance from WSD to protected contour of TV broadcasting station

When a fixed or mode II personal/portable WSD contacts a WSDB and provides its geographic coordinates, the WSDB will provide a list of available channels to the WSD based upon the criteria below. These criteria provide minimum separation distances from the protected contours of the TV stations based upon all of the following:

• the e.i.r.p. level of the WSD
• the type of WSD (fixed or personal/portable)
• the type of TV station

The minimum separation distances provided in tables D1 and D2 of annex D list the minimum separation distances for fixed WSDs from the near side of the protected contours for digital and analog TV stations respectively. Table D3 provides the minimum separation distances for personal/portable WSDs from the near side of the protected contours for both digital and analog TV stations.

• For a fixed WSD operating with an e.i.r.p. level greater than 40 mW (16 dBm), a WSDB shall list the available channels based upon the e.i.r.p. level of the WSD and on the minimum separation distances outside of the broadcast TV-protected contours indicated in tables D1 and D2 of annex D, for all co-channel, adjacent channel, and taboo channels cases.
• For a fixed WSD operating with an e.i.r.p. level of 40 mW (16 dBm) or less and an antenna height exceeding 10 m above ground level, a WSDB shall list the available channels for a fixed WSD operating with an e.i.r.p. of 40 mW based upon the minimum separation distances outside of the broadcast TV-protected contours indicated in tables D1 and D2 of annex D, for all co-channel, adjacent channel, and taboo channels cases.
• For a fixed WSD operating with an e.i.r.p. level of 40 mW (16 dBm) or less and an antenna height not exceeding 10 m above ground level, a WSDB shall list all adjacent channels and beyond as available within the broadcast TV-protected contours.
• For a mode II personal/portable WSD operating with an e.i.r.p. level greater than 40 mW (16 dBm), a WSDB shall list the available channels based on the minimum separation distances outside of the broadcast TV-protected contours indicated in table D3 of annex D, for all co-channel, adjacent channel, and taboo channels cases.
• For a mode II personal/portable WSD operating with an e.i.r.p. level of 40 mW (16 dBm) or less, a WSDB shall list the available channels for a mode II personal/portable WSD operating with an e.i.r.p. of 40 mW based on the minimum separation distances outside of the broadcast TV-protected contours indicated in table D3 of annex D only for the co-channel case. A WSDB shall list all adjacent channels and beyond as available within the broadcast TV protected contours.

In determining these minimum separations, the WSDB shall increase the minimum separation distances by the amount that the location accuracy uncertainty of a WSD exceeds ±50 m.

## 14. Protection criteria of remote rural broadband systems (RRBSs)

A WSDB shall protect the RRBS base station (downstream) transmitted protected contour, which corresponds to a field strength of 37.8 dBμV/m at a receive antenna height of 10 m. The RRBS protected contour is calculated using the licensed base station power and minimum HAAT of 30 m in all directions as described in annex C.

A WSDB shall also protect the RRBS base station (upstream) received signal at the RRBS base station from the customer premises equipment (CPE). The minimum separation distances for the receive channel shall be calculated using the protection criteria as specified in table C2 in annex C.

The WSD minimum separation distance from RRBS scenarios are outlined below.

### 14.1 Minimum separation distance from a fixed WSD to an RRBS base station-protected contour (Downstream)

A WSDB shall ensure that fixed WSDs shall protect the transmit channel of the RRBS base station by operating outside the protected contours of the transmit co-channel, and outside the first adjacent and second adjacent transmit channel RRBS stations, at or greater than the minimum separation distances specified in table 3, based upon the WSD e.i.r.p. level.

Table 3: Minimum separation distance between fixed WSD and the protected contour of the RRBS transmit channel base station (Downstream)
EHAAT of fixed WSD (or dirHAAT, if applicable), m Minimum separation distance (km) of fixed WSD from the protected contour of the RRBS transmit channel base station
Fixed WSD e.i.r.p. Fixed WSD e.i.r.p. Fixed WSD e.i.r.p.
≤ 4 W > 4 W ≤ 4 W > 4 W ≤ 4 W > 4 W
EHAAT ≤ 3 2.5 3.2 0.4 0.5 0.1 0.1
3 < EHAAT ≤ 10 4.6 5.8 0.8 1 0.2 0.3
10 < EHAAT ≤ 30 8 10 1.3 1.7 0.4 0.5
30 < EHAAT ≤ 50 10.3 12.9 1.7 2.1 0.5 0.6
50 < EHAAT ≤ 75 12.6 16.3 2.1 2.6 0.6 0.7
75 < EHAAT ≤ 100 15.1 18.9 2.4 3 0.7 0.8
100 < EHAAT ≤ 150 18.5 23.3 3 3.7 0.8 1
150 < EHAAT ≤ 200 21.2 26.8 3.4 4.3 0.9 1.2
200 < EHAAT ≤ 250 23.7 29.8 3.8 4.8 1 1.3
250 < EHAAT ≤ 700 37.5 45.4 6.4 8 1.7 2.2

In determining these minimum separations, the WSDB shall increase the minimum separation distances by the amount that the location accuracy uncertainty of a WSD exceeds ±50 m.

### 14.2 Fixed WSD minimum separation distance to the RRBS base station receive channel (Upstream)

A WSDB shall ensure that fixed WSDs shall protect the co-channel receive channel of the RRBS licensee by operating at least at the minimum separation distances to the RRBS base station coordinates specified in table 4. Note that, unlike the distances in table 3, these distances do not include the RRBS nominal service contour.

Table 4: Fixed WSD minimum separation distance to the RRBS base station (Upstream)
EHAAT of Fixed WSD (or dirHAAT, if applicable), m Minimum separation distance (km) to the RRBS receive channel base station coordinates
Fixed WSD e.i.r.p. Fixed WSD e.i.r.p. Fixed WSD e.i.r.p.
≤ 4 W > 4 W ≤ 4 W > 4 W ≤ 4 W > 4 W
EHAAT ≤ 3 11.4 14.3 1.9 2.4 0.5 0.6
3 < EHAAT ≤ 10 20.7 26.1 3.4 4.3 0.9 1.2
10 < EHAAT ≤ 30 39.8 51.2 5.9 7.5 1.6 2
30 < EHAAT ≤ 50 47.3 57.8 7.7 9.6 2.1 2.6
50 < EHAAT ≤ 75 53.8 64.1 9.4 11.8 2.6 3.2
75 < EHAAT ≤ 100 58.9 69.3 10.8 13.6 3 3.7
100 < EHAAT ≤ 150 66 76.3 13.3 16.7 3.6 4.6
150 < EHAAT ≤ 200 70.8 82 15.3 19.9 4.2 5.3
200 < EHAAT ≤ 250 76.3 89 17.1 22.1 4.7 5.9
250 < EHAAT ≤ 700 113.4 132.8 28.1 36 7.8 9.9

In determining these minimum separations, the WSDB shall increase the minimum separation distances by the amount that the location accuracy uncertainty of a WSD exceeds ±50 m.

### 14.3 Mode II personal/portable WSD minimum separation distance to RRBS base transmit channel protected contour

A WSDB shall ensure that mode II personal/portable WSDs operating with power levels less than or equal to 100 mW (20 dBm) shall operate at or greater than the minimum separation distance to the transmit RRBS base station contours as specified in table 5.

Table 5: Mode II personal/portable minimum separation distance to RRBS base transmit channel protected contour
EHAAT of mode II WSD Minimum separation distance from RRBS base transmit channel protected contour (km)
channel*
≤ 250 m 8.2 0.7

*First and second adjacent channel operation is permitted for personal/portable WSDs operating below 40 mW.

In determining these minimum separations, the WSDB shall increase the minimum separation distances by the amount that the location accuracy uncertainty of a WSD exceeds ±50 m.

### 14.4 Mode II personal/portable WSD minimum separation distance to the receive RRBS base station coordinates

A WSDB shall ensure that mode II personal/portable WSDs operating with power levels less than or equal to 100 mW (20 dBm) shall operate at or greater than the minimum separation distance, as specified in table 6, to the receive channel’s base station coordinates.

Table 6: Mode II personal/portable minimum separation distance to RRBS receive channel-protected contour
EHAAT of mode II WSD Minimum separation distance from receive RRBS base station coordinates (km)
channel*
≤ 250 m 37.8 6.5

*First and second adjacent channel operation is permitted for personal/portable WSDs operating below 40 mW.

In determining the minimum separations, the WSDB shall increase the minimum separation distances by the amount that the location accuracy uncertainty of a WSD exceeds ±50 m.

## 15. Protection criteria to registered licensed LPA and developmental licence stations

Registered licensed LPA and developmental licence stations scheduling information will be included within the WSDB. A WSDB shall only provide channels to WSDs located at or greater than the minimum separation distance prescribed in table 7 from the registered area of operation of the protected LPA and developmental licence stations.

Table 7: WSD minimum separation distances from protected LPA and developmental licence stations
White space device characteristics Minimum co-channel separation distance from registered area of operation of protected LPA and Developmental licence stations (km)
WSD e.i.r.p. ≤ 4 W WSD e.i.r.p. > 4 W
Personal/portable 0.4 0.6
Fixed 1 1.6

## 16. Protection of radio astronomy observatories

In order to protect radio astronomy observatories, a WSDB shall not permit the use of WSDs on any channel within a distance of 2.4 km from the following two coordinates:

• Dominion Radio Astrophysical Observatory, located near Penticton, British Colombia (latitude 49° 19´ 12¨ N, longitude 119° 37´ 12¨ W)
• Algonquin Provincial Park, located in Ontario (latitude 45° 57´ 19.8¨ N, longitude 78°4´ 22.95¨ W)

## 17. Security

A WSDB shall incorporate reasonable and reliable security measures to ensure that WSD will not operate on occupied channels or cause interference to licensed services or systems.

A WSDB shall employ both of the following measures to protect the security of operational and/or client data:

• Implementation of reasonably secure methods for data transmission and authentication that are designed to prevent corruption or unauthorized modification of data when communicated between the WSDB and WSDs
• Implementation of reasonable controls designed to protect data from unauthorized access, input, manipulation or the deliberate extraction of operational and/or client data

## 18. Database access initialization and reverification procedures

A WSDB shall provide fixed and mode II personal/portable WSDs with channel availability information and shall include any scheduled changes in channel availability within the coming 48 hours, upon initialization and reverification of WSD contact.

A WSDB may provide available channel information to mode II personal/portable WSDs for locations beyond their current position and use that information to define a geographic area within which they could operate on the same available channels at all locations.

## 19. Synchronization

A WSDB shall ensure that the registration information of the fixed WSD sites, TV receive sites, cable TV head-ends, and scheduling information of licensed LPA sites is synchronized at least every 15 minutes with the other designated Canadian WSDBs, as well as with any U.S. WSDBs identified by ISED. The latter provision will depend on the outcome of cross-border negotiations with the U.S. During those negotiations, ISED will consider and minimize any resulting burden on Canadian databases.

ISED may specify particular channels and locations where WSDBs must ensure protection to services that change in operation faster than usual. The WSDB should take appropriate steps to ensure WSDs operating at the specified locations clear the protected channel within 15 minutes after a reservation is made by any such service with any of the certified, authorized WSDBs.

## 20. Detailed log files

For the purpose of resolving potentially harmful radio interference, WSDBAs must maintain a log of all active WSD registration, client contact and related operational information, for a minimum period of sixty (60) calendar days, and must make all such information available to ISED upon request.

A WSDBA shall also provide ISED with access, upon request, to the detailed log files of WSD queries and responses (including those that are personally identifiable) contained in its database, for the purposes of evaluation and enforcement.

## 21. Operation near the Canada-U.S. border

The bands 54-60 MHz, 76-88 MHz, 174-216 MHz, 470-608 MHz and 614-698 MHz are currently covered by all of the following agreements:

These three agreements and working arrangements deal with the sharing and use of the bands by broadcasting services operating in Canada and the United States. In addition, the LOU specifies that new (non-broadcasting) services shall not claim protection from DTV stations or analog TV stations in either country.

The LOU does not deal with non-broadcasting versus non-broadcasting operations in the border area. Therefore, until such time as a new Agreement can be reached between Canada and the United States, any authorization issued for non-broadcasting use in Canada within 400 km of the border area must be on a no-interference, no-protection basis with respect to broadcasting services in the United States.

Additionally, the UHF band (i.e. 470-608 MHz) is subject to the Statement of Intent Between the Federal Communications Commission of the United States of America and the Department of Industry of Canada Related to the Reconfiguration of Spectrum Use in the UHF Band for Over-The-Air Television Broadcasting and Mobile Broadband Services. This SOI pertains to the reconfiguration of UHF band to facilitate the use of over-the-air television broadcasting and mobile broadband services.

### 21.1 Protection criteria for U.S. broadcasting stations

Operating U.S. broadcasting stations, protected receive sites, and LPA are to be protected according to the same criteria specified for Canadian stations above, with the exception that protected contours and/or operational areas will be assumed to stop at the Canada-U.S. border. The required separation distances extend within Canada.

## 22. Interference response

Interference response stemming from WSD queries remains ISED’s responsibility and information shall be provided to ISED following a formal request. In order to facilitate the request, a WSDB shall:

• retain logs of WSD queries and responses for sixty (60) days to allow for audits in case of interference reports
• indicate whether channels are available when queried by a specific WSD or type of WSD. This feature shall allow for a type of WSD, or all WSDs, to be denied to channels on the basis of a geographic area defined by a point and radius, or by a quadrilateral area defined by straight lines connecting four geographic points

## Annex A: White space database (WSDB) interface evaluation tests

### A.1 WSDB interface test to connect with a fixed white space device (WSD)

A WSDB shall validate all the following information provided by a fixed WSD before initializing it:

1. Device is certified under RSS-222 as a fixed WSD (i.e. ISED ID)
2. Manufacturer’s serial number for the device is not on the denied list
3. Geographic coordinates are within Canada
4. Antenna height above mean sea level (AMSL) or antenna height above ground level (AGL) is provided and the antenna height AGL is ≤ 30 m, for areas other than congested areas
5. Geographic coordinates’ uncertainty with 95% confidence level

### A.2 WSDB interface with a mode II personal/portable WSD initialization

A WSDB shall validate all the following information provided by a mode II personal/portable WSD before initializing it:

1. Device is certified under RSS-222 as a mode II personal/portable device
2. Manufacturer’s serial number for the device is not on the denied list
3. Geographic coordinates are within Canada
4. Geographic coordinates’ uncertainty with 95% confidence level

### A.3 WSDB mode I personal/portable WSD validation

A WSDB shall validate all the following information provided by a mode I personal/portable WSD through an intermediate fixed WSD or mode II WSD before initializing it:

1. Device is certified under RSS-222 as a mode I personal/portable device
2. Fixed WSD has an effective height above average terrain (EHAAT) of less than or equal to 106 m (if the validation request comes from a fixed WSD)

### A.4 White space channel availability

A WSDB shall confirm the available channels that can be assigned to fixed or personal/portable WSD under test.

### A.5 First adjacent power reduction

A WSDB shall only provide available channels to a WSD:

• located within the protected contour of a station on the first adjacent or any taboo channel
• that has an e.i.r.p. of 40 mW or less
• that operates with an antenna height above ground level of 10 m or less (in the case of a fixed WSD)

## Annex B: Determination of the TV broadcast protected contour

1. The position of the protected contour of each TV station is determined using the height above average terrain (height above average terrain (HAAT), as defined in section 6) measurement on each of 360 equally spaced radials, starting from True North and moving clockwise.
2. The effective radiated power (ERP) is determined in the direction of each radial, using the directional antenna tabulations for the broadcast station. Individual relative field values are then squared and multiplied by the maximum ERP, which will derive the ERP along the specific radial. Since the HAAT values are to be computed for 1 degree intervals and the antenna tabulation will typically be at much larger intervals, the white space database (WSDB) should interpolate dB units between provided antenna data points using linear interpolation. Where the broadcast antenna pattern data does not exist for a directional station, the maximum ERP value is applied in all directions.
3. The ERP and HAAT, in conjunction with the criteria in section 13.2, are used to calculate the distance from the broadcast station to the protected contour along the radial. In calculating the HAAT value, the ground elevation and station height above sea level provided in the ISED database should be used instead of the ground elevation predicted by the terrain elevation data files. For interpolating a value between available data points on the F propagation curves, linear interpolation should be used with all units converted to the decibel scale during the interpolation process (i.e. field strength remains in dBu, height is converted to dB referenced to 1 m, and distance is converted to dB referenced to 1 km). The F propagation curves have a limited range of data points for input and output parameters for which to provide propagation results. If a terrain profile or station antenna height leads to a height value above or below the curve limits, the value at the limit should be used (i.e. 30 and 1600 m for lower/upper limits respectively). If the transmitter power is sufficiently low such that a distance below the curve limits is obtained, the free space propagation model should be used as an alternate.

## Annex C: Methodology on the derivation of the minimum separation distance to the TV broadcast and remote rural broadband systems (RRBS) contours

This section is for information only. It describes how the minimum separation distances in tables 3 to 6 and tables D1 to D3 were obtained.

### C.1 Methodology used to derive the minimum separation distances from TV broadcast contours

1. Compute the maximum allowable white space device (WSD) field strengths (dBµV/m) at the protected contours of the TV stations:

Uws = D-D/U+FB

where FB is the front-to-back ratio of the TV receive antenna in dB, given in table C1(b) below, D/U in dB is the protection ratio given in table C1(a), and D is the threshold of the protected TV contours in dBµV/m as given in table 2.
2. Once the maximum allowable WSD field strength values are computed (Uws), one can then use the WSD’s effective radiate power (ERP) and effective height above average terrain (EHAAT), together with the F(50,10) propagation curves, to extract the intermediate distance. For interpolating a value between available data points on the F(50,10) propagation curves, linear interpolation should be used with all units converted to the decibel scale during the interpolation process (i.e. field strength remains in dBu, height is converted to dB referenced to 1 m, and distance is converted to dB referenced to 1 km). The F(50,10) propagation curves have a limited range of data points for input and output parameters for which to provide propagation results. If a station antenna height is below 30 m and/or the distance is below the minimum F(50,10) propagation curves distance limit of 15 km, the Egli propagation model should be used to calculate the intermediate distance.

Egli propagation model equation:

$PL=88 + 40 \text{log} (d) + 20 \text{log} (f) - 20 \text{log} \,(h_{t} * h_{r})$
Where PL is the path loss in dB, d is the distance in kilometres, f is the frequency in MHz, ht and hr are the transmitter and receiver antenna heights in meters.
3. In order to calculate the actual minimum distances required between the WSD and the protected contours of the TV stations in each band, the intermediate distance is multiplied by a compensation factor of 1.12, which will produce the separation distance to the TV broadcast protected contours. The 1.12 is used to adjust the front-to-back ratio, as shown in table C1 (b), of the TV receiving station when it is not at the maximum value.
Table C1 (a): TV protection ratios
Type of TV station Interfering channel offset relative to channel N  TV protection ratios (Desired/
Undesired) (dB)
Analog (full and low-power)Table note ** N-1 -14
N 34
N+1 -17
Analog (full and low- power)Table note **** ultra high frequency (UHF) only N–2 -24
N+2 -28
N-3 -30
N+3 -34
N-4 -34
N+4 -25
N-7 -35
N+7 -43
N-8 -32
N+8 -43
N+14 -33
N+15 -31
Digital (full and low- power)Table note ****** N-4 -52
N-3 -48
N-2 -44
N–1 -33
N 23
N+1 -33
N+2 -44
N+3 -48
N+4 -52
Table C1 (b): Front-to-back ratio (dB)
Channels Analog station DTV station
2-6 6 10
7-13 6 12
14-51 6 14

### C.2 Methodology for the derivation of the minimum separation distance to RRBS

The methodology for the derivation of the minimum separation distance to RRBS has been adopted from annex B in SRSP 300.512, Technical Requirements for Remote Rural Broadband Systems (RRBS) Operating in the Bands 512–608 MHz (TV Channels 21 to 36).

1. The distance to the Service Contour of the RRBS Base Station Transmit Channel is derived by using the F(50,90) curves, its ERP and its calculated height above average terrain (HAAT) for each degree starting at 0 degrees; until the 30.8 dBµV/m field strength level is reached. For interpolating a value between available data points on the F(50,90) propagation curves, linear interpolation should be used with all units converted to the decibel scale during the interpolation process (i.e. field strength remains in dBu, height is converted to dB referenced to 1 m, and distance is converted to dB referenced to 1 km). The F(50,90) propagation curves have a limited range of data points for input and output parameters for which to provide propagation results. If a station antenna height is below 30 m and/or the distance is below the minimum F(50,90) propagation curves distance limit of 1.5 km, the Egli propagation model should be used to calculate the distance to the Service Contour of the RRBS Base Station Transmit Channel.
2. The protection criteria in the RRBS Base Station Transmit (Downstream) Channel in table C2 are used to calculate the minimum separation distances from the WSDs to the RRBS protected contour as defined in sections 14.1 and 14.3 under tables 3 and 5. The minimum separation distances have been calculated assuming WSDs are active on multiple channels.
3. The protection criteria in the RRBS Base Station Receive (Upstream) Channel in table C2, along with a 1.2 multiplier (to take into account multiple WSDs) are used to calculate the minimum separation distances from WSDs to the RRBS base station coordinates, as shown in sections 14.2 and 14.4 under tables 4 and  6. The separation distances have been calculated assuming WSDs are active on multiple channels.
Table C2: RRBS station protection criteria
Channel RRBS customer premises equipment (CPE) (Downstream)
protection criteria*
(dBµV/m)
RRBS base station (Upstream)
protection criteria*
(dBµV/m)
Co-channel 37.8 14.8

*SRSP 300.512, sections 9.2.3 to 9.2.5.

## Annex D: Minimum separation distances

This annex prescribes the minimum separation distance of white space devices (WSDs) operating at a given height (i.e. effective height above average terrain (EHAAT)), channel range, and power level. The white space database (WSDB) shall provide the list of available channels based on the prescribed minimum separation distances and the WSDs location, in accordance with the requirements of section 13.3.2 (Minimum separation distance from WSD to protected contour). As indicated in section 13.3.1, the directional HAAT can be used instead of EHAAT.

Table D1: Minimum separation distance in kilometres (km) of the fixed WSD from the broadcast DTV-protected contour
EHAAT of fixed WSDTable note **, m Channel range Co-channel Adjacent channel Table note **** Taboo channelsTable note ******
Fixed WSD equivalent isotropically radiated power (e.i.r.p.) Fixed WSD e.i.r.p. Fixed WSD e.i.r.p.
40 mW 100 mW 250 mW 625 mW 1.6 W 4 W 10 W ≤ 4 W 10 W ≤ 4 W 10 W
EHAAT ≤ 3 2 to 6 3.4 4.2 5.3 6.6 8.4 10.5 13.2 0.5 0.6 0 0
7 to 13 1.9 2.4 3 3.8 4.7 5.9 7.5 0.3 0.3 0 0
14 to 51 1.5 1.8 2.3 2.9 3.6 4.5 5.7 0.2 0.3 0 0
3 < EHAAT ≤ 10 2 to 6 6.1 7.7 9.6 12.1 15.3 19.2 24.1 0.8 1 0 0
7 to 13 3.5 4.3 5.4 6.8 8.6 10.8 13.6 0.5 0.6 0 0
14 to 51 2.6 3.3 4.2 5.2 6.6 8.3 10.4 0.4 0.5 0 0
10 < EHAAT ≤ 30 2 to 6 10.5 13.2 16.6 21.7 28.2 37 50.6 1.4 1.7 0 0
7 to 13 5.9 7.5 9.4 11.8 18.2 23.4 30.1 0.8 1 0 0
14 to 51 4.5 5.7 7.2 9 11.3 14.3 18.2 0.6 0.8 0 0
30 < EHAAT ≤ 50 2 to 6 13.6 17.4 21.9 28.1 36.5 47.9 62.7 1.8 2.2 0 0
7 to 13 7.7 9.6 12.1 18.6 23.7 30.2 38.8 1 1.3 0 0
14 to 51 5.8 7.3 9.2 11.6 14.6 18.6 23.8 0.8 1 0 0
50 < EHAAT ≤ 75 2 to 6 17 21.5 27.4 35 44.9 57.5 71.2 2.1 2.7 0 0
7 to 13 9.4 11.8 18.3 23.1 29.3 37.2 47.2 1.2 1.5 0 0
14 to 51 7.2 9 11.3 14.2 18.4 23.2 29.3 0.9 1.2 0 0
75 < EHAAT ≤ 100 2 to 6 19.8 25.3 32 40.6 51.5 63.6 77.3 2.5 3.1 0 0
7 to 13 10.8 16.9 21.3 26.9 34.2 42.9 53.6 1.4 1.8 0 0
14 to 51 8.3 10.4 13 17 21.4 26.9 33.9 1.1 1.3 0 0
100 < EHAAT ≤ 150 2 to 6 24.6 31.3 39.3 49.1 60.8 73.1 86.9 3 3.8 0 0
7 to 13 13.2 20.6 26.1 32.8 41.5 51.7 62.7 1.7 2.1 0 0
14 to 51 10.1 12.7 15.9 20.8 26.3 33 39.6 1.3 1.6 0 0
150 < EHAAT ≤ 200 2 to 6 28.7 36.2 45 55.9 67.8 80.3 94.2 3.5 4.3 0 0
7 to 13 18.7 23.6 29.8 37.6 47.3 58.3 69.2 2 2.5 0 0
14 to 51 11.6 14.6 19 23.8 30.2 37 44.1 1.5 1.9 0 0
200 < EHAAT ≤ 250 2 to 6 32.2 40.4 50.2 61.7 74 87 100.7 3.9 4.8 0 0
7 to 13 20.9 26.5 33.5 42.1 52.7 63.5 74.3 2.2 2.7 0 0
14 to 51 13 16.4 21.1 26.6 33.7 40.2 47.8 1.7 2.1 0 0
250 < EHAAT ≤ 700 2 to 6 57 69.6 83.1 97.4 112.8 128.7 145.2 6.4 8.1 0 0
7 to 13 40.5 51.6 63 75.2 88.6 101.4 114.9 3.6 4.6 0 0
14 to 51 20.9 26.9 34.3 42.1 51.2 60.4 70.2 2.8 3.5 0 0
Table D2: Minimum separation distance in kilometres (km) of the fixed WSD from the broadcast analog TV-protected contour
EHAAT
of fixed
WSDTable note **, m
Channel range Co-channel Adjacent channelTable note **** and
taboo channelsTable note ******
Fixed WSD e.i.r.p. Fixed WSD e.i.r.p.
40 mW 100 mW 250 mW 625 mW 1.6 W 4 W 10 W ≤ 4 W 10 W
EHAAT ≤ 3 2 to 6 2.7 3.4 4.2 5.3 6.7 8.4 10.5 0.6 0.7
7 to 13 1.6 2 2.5 3.2 4 5 6.3 0.4 0.4
14 to 51 1.2 1.5 1.8 2.3 2.9 3.6 4.5 0.3 0.3
3 < EHAAT ≤ 10 2 to 6 4.9 6.1 7.7 9.6 12.1 15.3 19.2 1 1.3
7 to 13 2.9 3.7 4.6 5.7 7.3 9.1 11.4 0.6 0.8
14 to 51 2.1 2.6 3.3 4.1 5.2 6.6 8.2 0.5 0.6
10 < EHAAT ≤ 30 2 to 6 8.4 10.5 13.2 16.6 21.8 28.1 36.9 1.7 2.1
7 to 13 5 6.3 7.9 9.9 12.5 19.4 24.9 1 1.3
14 to 51 3.6 4.5 5.7 7.1 9 11.3 14.2 0.8 0.9
30 < EHAAT ≤ 50 2 to 6 10.8 13.6 17.3 21.9 28.3 36.5 47.8 2.2 2.7
7 to 13 6.5 8.1 10.2 12.8 19.8 25.2 32.1 1.3 1.7
14 to 51 4.7 5.8 7.3 9.2 11.6 14.6 18.6 1 1.2
50 < EHAAT ≤ 75 2 to 6 13.2 16.9 21.5 27.4 35.1 44.8 57.4 2.7 3.4
7 to 13 7.9 9.9 12.4 19.4 24.6 31.1 39.4 1.6 2
14 to 51 5.7 7.1 9 11.3 14.2 18.4 23.2 1.2 1.5
75 < EHAAT ≤ 100 2 to 6 15.3 19.8 25.3 32 40.8 51.5 63.5 3.1 3.9
7 to 13 9.1 11.4 17.9 22.5 28.7 36.2 45.4 1.9 2.3
14 to 51 6.6 8.2 10.4 13 17.1 21.4 26.9 1.3 1.7
100 < EHAAT ≤ 150 2 to 6 19.3 24.6 31.3 39.3 49.3 60.7 73 3.8 4.7
7 to 13 11.1 17.3 21.9 27.6 34.9 43.9 54.6 2.3 2.8
14 to 51 8 10.1 12.7 15.9 20.9 26.3 33 1.6 2.1
150 < EHAAT ≤ 200 2 to 6 22.5 28.6 36.1 45 56.2 67.7 80.3 4.3 5.4
7 to 13 12.9 19.8 25 31.6 40 49.9 60.9 2.6 3.3
14 to 51 9.3 11.6 14.6 19 23.9 30.2 37 1.9 2.4
200 < EHAAT ≤ 250 2 to 6 25.3 32.2 40.3 50.2 61.9 73.9 86.9 4.8 6.1
7 to 13 17.6 22.2 28.1 35.5 44.8 55.6 66.3 2.9 3.6
14 to 51 10.4 13 16.3 21.1 26.7 33.6 40.2 2.1 2.6
250 < EHAAT ≤ 700 2 to 6 44.9 56.9 69.5 83 97.7 112.7 128.6 8.1 10.1
7 to 13 33.3 43.1 54.7 65.9 78.7 91.7 104.6 4.8 6.1
14 to 51 17.3 20.9 26.8 34.2 42.3 51.1 60.4 3.5 4.4
Table D3: Minimum separation distance between personal/portable mode II WSD (100 mW) and the broadcast TV-protected contour
Personal/portable
mode II WSD
Minimum separation distance (km)
DTV
(Full and low-power)
Analog TV
(Full and low-power)
Channel range Co-channel Adjacent channel* N±1 Taboo channels* N±2, N±3, N±4 Co-channel Adjacent channel* N±1
and
taboo channels* N±2, N±3, N±4, N±7, N±8, N+14, N+15
14-36, 51 14.4 1.1 0.0 11.4 1.0

*Adjacent and taboo channel operation is permitted for personal/portable WSDs operating below 40 mW.

Date modified: