Specifications

Appendix A: Details of Model 6203/6204 Hardware
148 025-9581M
Figure 49: Transponder Board - Component Side
Connector J3 (PA)
All of the pins on connector J3 are associated with interfacing the Model 6203 to a Public
Address (PA) system. The Model 6203 is designed to automate the operation of the station
PA system by turning it on while the Model 6203 generates alert tones or passes along
dispatch messages, and turning off the PA when not in use. J3 also provides connections
for sharing the PA system with other audio sources.
There are two DPDT relays (PA AUD and PA PTT) and an LED (PA) that operate from a
single “PA ON” signal, generated within the Model 6203. When the Model 6203 PA LED
is on, common contacts of these two relays are connected to the normally open contacts.
When the PA LED is off, the common contacts are connected to the normally closed
contacts.
The PA PTT relay (pins 3 through 8) has all of its contacts available to the user. These
contacts are typically connected to the PA amplifier PTT input if needed.
1 12 1 12 1 12
J3 J4 J5
J1
J6
K2K1
P2
JA2
1
12
U7
SW2
SW1
R61
R108
R137 R135
R87
R107
R86
R84
R64
R63
TP-1
R62
JP12
JP11
JP2
JP1
JP13
JP4
JP3
JP14
JP5
JP8
JP7
JP6
JP15 JP10
JP9
Note: Jumper positions shown DO NOT
indicate final jumper positions after setup.
U9
JB2
J2