RETRANSMIT OPERATION

TM 11-5820-670-12

2-4. OPERATING PROCEDURES. (CONT)

NOTE

Retransmit operations are accomplished using two complete radio sets coupled together

as a two-way relay station.

1. Turn on master power to the two radio sets to be used as a relay station.

2. Set mode control switch (1) on both control units to RETRAN.

NOTE

Do not attempt retransmit operation with the SQUELCH controls set to DIS. Both controls

must be set to CARR or TONE.

3. Set SQUELCH mode selector switch (2) on both control units to either CARR or TONE.

NOTE

To operate satisfactorily, the two radio sets must be tuned to frequencies at least 3 MHz

apart. When they are spaced greater than 8 feet apart, frequency spacing may be

decreased.

4. Set frequency selector switches (3) on both control units to the respective frequencies of the

radio sets doing the communicating. These frequencies should be predetermined before flight

operation takes place.

5. If radio sets making up relay station are complete systems, check for proper operation by mon-

itoring relayed signals in headsets.

NOTE

If radio sets making up relay station are complete systems, either radio set can be used

for two-way voice communication if provisions have been made for keying transmitter.

Transmitter power output should be selected, 1 watt or 10 watts, depending upon dis-

tance between relay station radio sets. This is a maintenance function which is accom-

plished by setting a switch on the front panel of receiver-transmitter.

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