Section 5. Installation
5-10
Connection to a GE Custom MVP
For:
Zetron Model 37-MAX
To:
GE Custom MVP
Using:
709-7179 Generic Radio Cable
37-MAX End
Function
J1
pin#
Wire
Color
Radio End
Connection/Notes
+12 volts DC
1
RED
Inside front panel, S701 (switch side)
Ground
2
BLACK
Chassis ground
Discriminator Input
3
WHITE
IF detector board, junction of R606,
R608, C622
Ground
4
BRAID
No connection
TX Audio Output
5
BLUE
Exciter board, P902, pin 4 (Mic Hi)
Ground (spare)
6
N/C
PTT Output
7
ORANGE
System Audio Squelch board, J911
(PTT)
Ground
8
BROWN
Exciter board, P902, pin 5 (Mic Lo)
COR Input
9
YELLOW
System audio squelch, J912 (CAS)
CTCSS/DCS Encode
10
GREEN
Exciter board, P902, pin 9 (CG Hi)
GE MVP Configuration
Follow these steps:
1. Cut the circuit trace on top of the System Audio Squelch board which runs from U902 pin
6 toward R11. Cut the trace close to U902. This disables the receiver muting on PTT.
2. Install a jumper between J904 pin 2 (RX OSC Control) and J904 pin 1 (10 volt regulator)
on the System Audio Squelch board (SAS board). This provides a source of switched 10
volt to the receiver oscillator at all times.
Summary of Contents for 37-MAX
Page 72: ...Section 6 Repair 6 6 MODEL 37 MAX REPEATER PAL 702 9808A Schematic 1 3...
Page 73: ...Section 6 Repair 6 7 2 3...
Page 74: ...Section 6 Repair 6 8 3 3...
Page 75: ...Section 6 Repair 6 9 MODEL 37 MAX REPEATER PAL 702 9808A Silkscreen...
Page 76: ...APPENDIX A PROGRAMMING LOG A 1 OVERVIEW A 1 SYSTEM PROGRAMMING A 2 USER PROGRAMMING A 3...
