Piper Cherokee Six Service Manual page 654

PIPER CHEROKEE SIX SERVICE MANUAL
11-6. TESTING EMERGENCY LOCATOR TRANSMITTER. Before performing any
operational test of the ELT. the following precautions should be observed:
CAUTION
The transmitter operates on the emergency frequencies of
121.5 and 243 MHz; both of these frequencies are monitored
by the various FAA installations.
Permission should be
obtained from the FAA/FCC Representative (or other
applicable Authority) prior
to testing. Keep your test
transmission to a minimal duration.
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Revised: 12/15/80
ELECTRONICS
3F12