Syntor X 9000 YKN4214A Dual Radio T-Cable Pin Out:

• Above is a front view of one side of the T-Connector and the 2nd radio connector with pin numbers. The cable is on the left side of the connector.

Syntor X 9000 YKN4214A Dual Radio T-Cable Pin Out (Negative Ground)
T-Cable Pin #	2nd Radio J1 Pin #	2nd Radio Pin Description
A	A	A+
B	B	A- (jumpered to 2nd radio pin 10)
1		PTT ( input)
2		Detected Audio
3		Tx Audio
4	4	Reset (Input/Output)
5	5	Busy (RS-422 Input/Output)
6	6	Switched B+
7	7	Switched B+
8	8	B-
9		Filtered Audio
10	10	Chassis (jumpered to 2nd radio pin B)
11		Detected Audio Shield
12		A+
13
14		Mic. Low
15	15	Filtered Audio Shield
16		Write Enable
17	17	Bus + (RS-422 Input/Output)
18		Tx Audio Shield
19	19	Bus - Shield
20
21
22	Zip Cord	Speaker Audio Low (2nd radio zip cord)
23		KEY (Input)
24
25	25	Bus - (RS-422 Input/Output)
26		Analog Ground
27	27	Mic. Hi (Input)
28
29		KID
30		Switched 5 Volts
31	31	Digital Ground
32		B-
33		Option Rx Audio
34		Option Rx Shield
35
36
37	Zip Cord	Speaker Audio Hi (2nd radio zip cord)

• This T-Cable is used to join 2 separate radios (one VHF and one UHF) together. Then a regular radio cable is plugged into the T-Connector and a HCN1063 Systems 9000 Control Head.
• This is not the same as the HHCH dual radio system. The HHCH requires a System Interface Unit to go between the HHCH and each radio.
• To make this work each radio must have a special firmware chip at U501 in both radios. Without these 2 special chips this cable configuration will not work.
• The grayed out pins with no number shown are not installed in the connector.
• The grayed out pins with a number shown are not wired to the cable.
• There is a 2 conductor zip-cord (it looks like a 110 volt appliance cord) style cable on the 2nd radio connector used to attach the speaker to the second radio (each of the 2 radios has its own speaker).

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