2-7. OPERATING PROCEDURE (Cont)
homing and 10 miles for voice contact. For maximum transmit and receive, keep hands away from antenna when the
radio is in operation and hold in a vertical position with the antenna pointed straight up. Perform the following steps prior
Leave the function switch in the OFF position. Unauthorized personnel shall not perform
maintenance on the AN/PRC-90.
Unscrew battery cap and remove battery.