Procedural Steps (Cont):
mode, turn t h e P R E S E T
ac. To o p e r a t e i n the continuous
CHANNEL/CONTINUOUS TUNE SELECTOR SWITCH (18) to the lower positions,
labelled I and II. "I" corresponds to Band I frequencies and "II" corresponds to Band II
ad. the FREQUENCY TUNING KNOB (27) to the desired frequency.
ae. Load the antenna by accomplishing steps (w) thru (z).
Observe a 1:3 transmit to receive ratio i.g., 3 minutes
transmit to 9 minutes receive, to minimize the possibility of
overheating the power supply and power output tubes.
af. You are now ready to operate in the continuous tune mode. The tuning
controls are very sensitive; therefore, the continuous mode should not be selected if the
radio is to be moved or subjected to vibrations.
9. Record the BDAR action taken. When the mission is completed, as soon as
practicable, repair vehicle using standard maintenance procedures.
11-27. FOREIGN EQUIPMENT INTERCHANABILITY (ALLIED RADIOS)
This procedure contains general installation instructions for Allied radio equipment.
q Vary according to radio set but you can expect a decrease in operating range on some
q You can expect not to be able to transmit and receive on all frequencies within the
q 1 soldier
q Approximately one hour for each type of installation
Replace with the AN/VRC-12 series of radio components from foreign vehicles.
1. Refer to table 11-1 for comparison purposes in determining limitations.