Section 5. Installation
5-24
Connections to a Motorola MICOR Base/Repeater
For:
Zetron Model 37-MAX
To:
Motorola MICOR Base/Repeater
Using:
709-7179 Generic Radio Cable
37-MAX End
Function
J1
pin#
Wire
Color
Radio End
Connection/Notes
+12 volts DC
1
RED
Power Supply A+
Ground
2
BLACK
Power Supply A-
Discriminator Input
3
WHITE
Squelch Gate, pin-10
Ground
4
BRAID
No connection
TX Audio Output
5
BLUE
Station Control, pim-16
Ground (spare)
6
N/C
PTT Output
7
1N4148
Cathode (banded) end connects to
wire, anode to TB3, pin-14
Ground
8
BROWN
No connection
COR Input
9
YELLOW
J2, pin-5 (RX Unsquelch)
CTCSS/DCS Encode
10
GREEN +
10 k
Ω
Resistor goes on radio end,
connects to J5, pin-27
Motorola MICOR Connection
1. Remove all modules except Station Control and the Squelch Gate card.
2. Modify the control modules as follows:
a. Station Control
:
Jumper the "PL Disable" switch ON.
b. Station Gate
:
Remove C17, in the exciter output line.
3. Modify RX Audio Squelch board (TRN-6006A) by adding a jumper from U202 pin 10 to
P903 pin 14.
4. Modify Exciter board (TLE-1720A) by adding a jumper from the IDC pot wiper to P902
pin 8, and cut the trace between P902 pin 8 andJU401.
5. Modify the backplane board (TRN-6421A) by cutting the trace going to J2 pin 5, and
cutting the trace going to J5 pin 27.
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...
