Cable Pinout for Syntor X

Rectangular sys90 Channel Select Heads

Note-there are two types of cables which mate to Syntor X radios. The ordinary type is shown here and can also be used with clamshell select heads. The lesser desireable (of which I have 7) is for trunking radios and does not have 9 of the Mode lines necessary to select even 4 channels. Avoid them, or better yet, buy mine.

Black Connector - viewed from wire side

1. Yellow - to pin 12 of Grey Connector - A+
2. Black - gnd to Microphone HUB (for receive PL disable)
3. Orange - Speaker Audio Hi
4. Black/Blue - PL On/Off
5. Red/Blue - spare
6. Green - Speaker Audio Lo
7. Black/Grey - Display Enable
9. Black/Brown - to pin 13 of Grey Connector
10. Shield around pin 17 Brown
11. Black/Yellow - Microphone Hi
12. Green - Battery A+ fused
13. Orange - Ignition A+ fused
14. Black/Red - PTT Reference
15. Green - to Microphone Hang Up Box (for receive PL disable)
16. Black/Brown - Discriminator
17. Brown - Squelch
20. Black/Green - Volume
21. Shield - Audio Ground
22. Black/Orange - PTT

Grey Connector - viewed from wire side

1. Yellow - A+
3. Black/Violet Chassis - A-
5. Green - PTT Indicator to pin 6 of small Connector
7. White/Blue - M11
8. White/Yellow - M9
9. White/Green - M10
10. White/Violet - M12
11. Violet - Head Strobe
12. Yellow - to pin 1 of large Black Connector A+
13. Black/Brown - to pin 9 of large Black Connector
21. Violet - to pin 4 of small connector

Purple Connector - viewed from wire side

1. White/Grey - Channel Scan Enable
2. Black - M4
3. White/Black - M5
5. White/Orange - M8
6. Grey - M3
7. White - M2
8. Blue - M1
10. White/Red - M7
11. White/Brown - M6
12. Blue to pin 1 of small connector - M4
14 White to pin 3 of small connector - M5

Small 6 Pin Connector - viewed from wire side

1	NONE	3
Blue		White
Violet	-	Green
4	5	6

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