two R-450/FRR-28 rcvrs
O-165/UR master oscillator
AM-615/UR amplifier/detector
KY-79/UR keyer
SB-224/UR patching panel
LS-187/UR speaker
FRR-28 block diagram
FRR-28 diversity mode block diagram
KY-79/UR
NAVCOMMSTA Kodiak - 1959
LS-187/UR
SB-224/UR
AM-615/UR
KY-79/UR
FRR-28 spec sheet - page 1 - page 2
Manual - NAVSHIPS 91582 (available from Andy Moorer)
article in Electric Radio magazine - Sept 2004, p2
Northern Radio Type 159 Receiver (R-450/FRR-28)
- manual
- schematic
- wiring diagram