Codan Radio Communications AMP-2-450 User Manual

UHF AMP-2 30 W Power Amplifier Instruction Manual

IM71-AMP2450-30

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 has therefore developed maximum 

permissible exposure (MPE) limits for field strength and power density, listed in FCC 47 CFR § 1.1310. 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) provides assistance in determining whether a proposed or existing 

transmitting facility, operation or device complies with RF exposure limits. In accordance with OET Bulletin 65 

and FCC 47 CFR § 1.1307 (b), this Daniels Electronics Ltd. transmitter is categorically excluded from routine 

evaluation or preparing an EA for RF emissions and this exclusion is sufficient basis for assuming compliance 

with FCC MPE limits. This exclusion is subject to the limits specified in FCC 47 CFR §§ 1.1307 (b) and 1.1310. 

Daniels Electronics Ltd. has no reason to believe that this excluded transmitter encompasses exceptional 

characteristics that could cause non-compliance. 

•  The FCC’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, etc.).

 

•  The FCC’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.

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. The 

following antenna installation guidelines are extracted from Appendix A to 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  or 

 

 

Power ≤ 1000W ERP (1640 W EIRP)

Building-mounted Antennas: 
 

 

Power ≤ 1000 W ERP (1640 W EIRP)

The following RF Safety Guidelines should be observed when working in or around transmitter sites:

 

•  Do not work on or around any transmitting antenna while RF power is applied. 

 

•  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.

 

•  Assume all antennas are active unless specifically indicated otherwise.

 

•  Never operate a transmitter with the cover removed.

 

•  Ensure all personnel entering a transmitter site have electromagnetic energy awareness training.

 

1)  FCC Code of Regulations; 47 CFR §§ 1.1307 and 1.1310.

 

2)  FCC OET Bulletin 65, Edition 97-01, “Evaluating Compliance with FCC Guidelines for 

  Human Exposure to Radiofrequency Electromagnetic Fields”.

 

3)  http://www.fcc.gov/oet/rfsafety/