Codan Radio Communications AMP-4-470 User Manual
RF Exposure Warning
Exposure to radio frequency (RF) energy has been identified as a potential environmental factor that must be considered before a radio
transmitter can be authorized or licensed. The FCC and IC have therefore developed maximum permissible exposure (MPE) limits for field
strength and power density, listed in FCC 47 CFR § 1.1310 and IC RSS-102 Issue 2 Sect 4. The FCC has furthermore determined that
determination of compliance with these exposure limits, and preparation of an Environmental Assessment (EA) if the limits are exceeded,
is necessary only for facilities, operations and transmitters that fall into certain risk categories, listed in FCC 47 CFR § 1.1307 (b), Table 1.
All other facilities, operations and transmitters are categorically excluded from making such studies or preparing an EA, except as indicated
in FCC 47 CFR §§ 1.1307 (c) and (d).
transmitter can be authorized or licensed. The FCC and IC have therefore developed maximum permissible exposure (MPE) limits for field
strength and power density, listed in FCC 47 CFR § 1.1310 and IC RSS-102 Issue 2 Sect 4. The FCC has furthermore determined that
determination of compliance with these exposure limits, and preparation of an Environmental Assessment (EA) if the limits are exceeded,
is necessary only for facilities, operations and transmitters that fall into certain risk categories, listed in FCC 47 CFR § 1.1307 (b), Table 1.
All other facilities, operations and transmitters are categorically excluded from making such studies or preparing an EA, except as indicated
in FCC 47 CFR §§ 1.1307 (c) and (d).
Revised FCC OET Bulletin 65 (Edition 97-01) and IC RSS-102 Issue 2 provide assistance in determining whether a proposed or existing
transmitting facility, operation or device complies with RF exposure limits. In accordance with OET Bulletin 65, FCC 47 CFR § 1.1307 (b)
and RSS-102 Issue Sect 2.5, the Codan Radio Communications transmitter manufactured in Canada is categorically excluded from routine
evaluation or preparing an EA for RF emissions and this exclusion is sufficient basis for assuming compliance with FCC/IC MPE limits.
This exclusion is subject to the limits specified in FCC 47 CFR §§ 1.1307 (b), 1.1310 and IC RSS-102 Issue 2 Sect 4. Codan Radio
Communications has no reason to believe that the excluded transmitter encompasses exceptional characteristics that could cause non-
compliance.
transmitting facility, operation or device complies with RF exposure limits. In accordance with OET Bulletin 65, FCC 47 CFR § 1.1307 (b)
and RSS-102 Issue Sect 2.5, the Codan Radio Communications transmitter manufactured in Canada is categorically excluded from routine
evaluation or preparing an EA for RF emissions and this exclusion is sufficient basis for assuming compliance with FCC/IC MPE limits.
This exclusion is subject to the limits specified in FCC 47 CFR §§ 1.1307 (b), 1.1310 and IC RSS-102 Issue 2 Sect 4. Codan Radio
Communications has no reason to believe that the excluded transmitter encompasses exceptional characteristics that could cause non-
compliance.
Notes
:
•
The FCC and IC’s exposure guidelines constitute exposure limits, not emission limits. They are relevant to locations that • are
accessible to workers or members of the public. Such access can be restricted or controlled by appropriate means (i.e., fences,
warning signs and others).
accessible to workers or members of the public. Such access can be restricted or controlled by appropriate means (i.e., fences,
warning signs and others).
•
The FCC and IC’s limits apply cumulatively to all sources of RF emissions affecting a given site. Sites exceeding these • limits are
subject to an EA and must provide test reports indicating compliance.
subject to an EA and must provide test reports indicating compliance.
RF Safety Guidelines and Information
Base and Repeater radio transmitters are designed to generate and radiate RF energy by means of an external antenna, typically mounted
at a significant height above ground to provide adequate signal coverage. To reduce potential radio interference to other users, the
antenna type and its gain should be so chosen that the equivalent isotropically radiated power (EIRP) is not more than that permitted for
successful communication. The following antenna installation guidelines are extracted from Appendix A from OET Bulletin 65 and must be
adhered to in order to ensure RF exposure compliance:
at a significant height above ground to provide adequate signal coverage. To reduce potential radio interference to other users, the
antenna type and its gain should be so chosen that the equivalent isotropically radiated power (EIRP) is not more than that permitted for
successful communication. The following antenna installation guidelines are extracted from Appendix A from OET Bulletin 65 and must be
adhered to in order to ensure RF exposure compliance:
Non-building-mounted Antennas:
•
Height above ground level to lowest point of antenna ≥ 10 m
•
Power ≤ 1000 W ERP (1640 W EIRP)
Building-mounted Antennas:
Power ≤ 1000 W ERP (1640 W EIRP)
Power ≤ 1000 W ERP (1640 W EIRP)
The following RF Safety Guidelines should be observed when working in or around transmitter sites:
•
The minimum safe distance the user should be from the transmitter antenna while transmitting is 142 cm for transmitters 8W or
less and 300 cm for amplifiers 30W or less. This assumes a maximum antenna EIRP of 15 dBi.
less and 300 cm for amplifiers 30W or less. This assumes a maximum antenna EIRP of 15 dBi.
•
Do not work on or around any transmitting antenna while RF power is applied.
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Before working on an antenna, disable the appropriate transmitter and ensure a “DO NOT USE” or similar sign is placed on or
near the PTT or key-up control.
near the PTT or key-up control.
•
Assume all antennas are active unless specifically indicated otherwise.
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Never operate a transmitter with the cover removed.
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Ensure all personnel entering a transmitter site have electromagnetic energy awareness training.
For more information on RF energy exposure and compliance, please refer to the following:
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FCC Code of Regulations; 47 CFR §§ 1.1307 and 1.1310
•
FCC OET Bulletin 65, Edition 97-01, “Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency
Electromagnetic Fields”
Electromagnetic Fields”
•
http://www.fcc.gov/oet/rfsafety/
•
IC RSS-102 Issue 2, “Radio Frequency Exposure Compliance of Radio Communication Apparatus”