Sec. 87.131 Power and emissions.
The following table lists authorized emissions and maximum power.
Power must be determined by direct measurement.
[[Page 200]]
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Authorized emission(s)
Class of station Frequency band/frequency \9\ Maxi
mum power \1\
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----------------
Aeronautical advisory............... VHF..................... A3E.................... 10 watt
s.
Aeronautical multicom............... VHF..................... A3E.................... 10 watt
s.
Aeronautical enroute and HF...................... R3E, H3E, J3E, J7B, H2B 6 kw.
aeronautical fixed.
HF...................... A1A, F1B, J2A, J2B..... 1.5 kw.
VHF..................... A3E, A9W............... 200 wat
ts.\2\
Aeronautical search and rescue...... VHF..................... A3E.................... 10 watt
s.
HF...................... R3E, H3E, J3E.......... 100 wat
ts.
Operational fixed................... VHF..................... G3E, F2D............... 30 watt
s.
Flight test land.................... VHF..................... A3E.................... 200 wat
ts.
UHF..................... F2D, F9D, F7D.......... 25 watt
s.\3\
HF...................... H2B, J3E, J7D, J9W..... 6.0 kw.
Aviation support.................... VHF..................... A3E.................... 50 watt
s.
Airport control tower............... VHF..................... A3E.................... 50 watt
s.
Below 400 kHz........... A3E.................... 15 watt
s.
Aeronautical utility mobile......... VHF..................... A3E.................... 10 watt
s.
Radionavigation land test........... 108.150 MHz............. A9W.................... 1 milli
watt.
334.550 MHz............. A1N.................... 1 milli
watt.
Other VHF............... M1A, XXA, A1A, A1N, 1 watt.
A2A, A2D, A9W.
Other UHF............... M1A, XXA, A1A, A1N, 1 watt.
A2A, A2D, A9W.
5031.0 MHz.............. F7D.................... 1 watt.
Radionavigation land................ Various \4\............. Various \4\............ Various
.\4\
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----------------
Aeronautical Frequencies
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----------------
Aircraft (Communication)............ UHF..................... F2D, F9D, F7D.......... 25 watt
s.
VHF..................... A3E, A9W............... 55 watt
s.
HF...................... R3E, H3E, J3E, J7B, 400 wat
ts.
H2B, J7D, J9W.
HF...................... A1A, F1B, J2A, J2B..... 100 wat
ts.
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----------------
Marine Frequencies \5\
-----------------------------------------------------------
----------------
156.300 MHz............. G3E.................... 5 watts
.
156.375 MHz............. G3E.................... 5 watts
.
156.400 MHz............. G3E.................... 5 watts
.
156.425 MHz............. G3E.................... 5 watts
.
156.450 MHz............. G3E.................... 5 watts
.
156.625 MHz............. G3E.................... 5 watts
.
156.800 MHz............. G3E.................... 5 watts
.
156.900 MHz............. G3E.................... 5 watts
.
157.425 MHz............. G3E.................... 5 watts
.
HF \6\.................. R3E, H3E, J3E, J2B, 1000 wa
tts.
F1B, A3E. 250 wat
ts.
MF \6\.................. R3E, H3E, J3E, J2B, F1B 1000 wa
tts.
HF \6\.................. A3E.................... 250 wat
ts.
(Radionavigation)................... Various \7\............. Various \7\............ Various
.\7\
Aircraft earth...................... UHF..................... G1D, G1E, G1W.......... 60 watt
s.\8\
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----------------
\1\ The power is measured at the transmitter output terminals and the type of power is determine
d according to
the emission designator as follows:
(i) Mean power (pY) for amplitude modulated emissions and transmitting both sidebands using unmo
dulated full
carrier.
(ii) Peak envelope power (pX) for all emission designators other than those referred to in parag
raph (i) of this
note.
\2\ Power and antenna height are restricted to the minimum necessary to achieve the required ser
vice.
\3\ Transmitter power may be increased to overcome line and duplexer losses but must not exceed
25 watts
delivered to the antenna.
\4\ Frequency, emission, and maximum power will be determined after coordination with appropriat
e Government
agencies.
\5\ To be used with airborne marine equipment type accepted for part 80 (ship) and used in accor
dance with part
87.
\6\ Applicable onIy to marine frequencies used for public correspondence.
\7\ Frequency, emission, and maximum power will be determined by appropriate standards during th
e type
acceptance process.
\8\ Power may not exceed 60 watts per carrier. The maximum EIRP may not exceed 2000 watts per ca
rrier.
\9\ Excludes automatic link establishment.
[ 54 FR 11720 , Mar. 22, 1989, as amended at 57 FR 45749 , Oct. 5, 1992; 62 FR 40308 , July 28, 1997]
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