[Milsurplus] Power Plug Pinouts- RT-68

[Mike Morrow]

Dave Stinson wrote:

>Could someone please send me the power plug
>pin-outs and voltages for the RT-68

Dave:

The following is from TM 11-284.

POWER IN  (Normally supplied by PP-109/GRC  [12 vdc in] or PP-112/GRC [24
vdc in])
A - +5.6 vdc relay supply
B - +85 vdc
C - +150 vdc
D - Ground Common
E - Same as D
F - +250 vdc transmitter B+
H - Jumper to J  (if not jumpered at REC-TR Control)
J -  Jumper to H (if not jumpered at REC-TR Control)
K - Ignore - switches external relay on transmit
L - +6.3 vdc receiver filament
M - +105 vdc to last audio stage
N - +6.3 vdc receiver filament
P - +450 vdc transmitter B+
R - -27 vdc transmitter gid bias

REC-TR CONTROL (Normally connects to a mounting rack like MT-299/GRC)
A - Audio out to speaker
B - Fixed level audio output
C - Mic audio input
D - Ground Common
E - Audio out to phones
F - Same as A
H - Jumper to J (if not jumpered at Power In)
J - Jumper to H (if not jumpered at Power In)
K - Ground for PTT

AUDIO  (Normally connects to H-33/PT or LS-177/U)
A - Audio out to phones
B - Ground Common
C - Mic audio input
E - Same as B
F - Ground for PTT
H - Same as B
L - Audio out to speaker

73,
Mike / KK5F