H-33F/PT Handset

Description

This handset has a carbon mike element and a dynamic earphone.  The push to talk switch makes one of the mike connections when pressed and it has a seperate isolated pair of terminals that are shorted when pressed.  The earphone is aloway connected.

Where Used

Radios

GRC-106
GRC-3-8
PRC-6 or PRC-6/6
PRC-8-9-10 and the, Canadian versions like CPRC-510, PRC-28
PRC-16
PRC-47
SEM-25
SEM-35 Ra
GRA-6 Control Group
Wireless Set A40

Telephone Related

TA-312
SB-22 switchboard
GRA-6 Control Group

Wiring

U-161/UConnector	Wire color	Function
A	White	Speaker	75 Ohm DC
B	Black	Speaker
C	Red	Mike	0.6 V @ 1 ma
D	Black	Mike
E	Green	PTT then Mike
F	Brown	isolated PTT
H	Yellow	isolated PTT
J	nc	na
K	nc	na
L	nc	na