What position must the GUARD/NORM/MANUAL switch be placed in order to use the ARC-186 RCU?
MANUAL
Secure voice communications for the ARC-164 UHF(V) radio is provided by?
KY-58
What are the guard frequencies?
FM / VHF / UHF
FM-40.5
VHF- 121.5
UHF- 243.00