Section 5. Installation
5-29
Connections to a Uniden ARU-251 Repeater
For:
Zetron Model 37-MAX
To:
Uniden ARU-251
(This is NOT for the ARU-251K)
Using:
709-7179 Generic Radio Cable
37-MAX End
Function
J1
pin#
Wire
Color
Radio End
Connection/Notes
+12 volts DC
1
RED
Pin 4
Ground
2
BLACK
Pin 5
Discriminator Input
3
WHITE
Pin 1
Ground
4
BRAID
No connection
TX Audio Output
5
BLUE
Pin 6
Ground (spare)
6
N/C
PTT Output
7
ORANGE
Pin 3
Ground
8
BROWN
No connection
COR Input
9
YELLOW
Pin 2
CTCSS/DCS Encode
10
GREEN
Pin 9
Uniden ARU-251 Configuration
1. At the radio's accessory jack, install a jumper wire between pin 7 and pin 8 (Audio Amp
Out to Speaker In).
2. Disconnect the Tone Encode lead from the Exciter at FT18 on the Exciter case, and leave
the wire disconnected.
3. Attach a wire from FT18 on the Exciter case to pin 9 of the accessory jack. This provides
a path for CTCSS encode from the panel to the transmitter exciter.
4. Set the Control Board switch to the Carrier Squelch position.
5. Set the Front Panel switches to Local and Monitor.
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...
