Telex 80 manual TK-x90 Model Cable Assembly, 1 IP223 Rev F or higher Board Configuration

2 IP-223 to Kenwood Radios

2.2.1 IP223 Rev F or higher Board Configuration:

Set the jumper J35 to B position for line 1 and the jumper J26 to B position for line 2

IP223 Serial	IP223 DB9		KCT-19 Accessory Conn.
Signal
	Line 1	Line 2
TXD	9	4	14
RXD	1	6	15

2.2.2 IP223 Rev A to Rev E Board Modifications:

Lift Pin 12(line 1) or pin 9(line 2) of U45 according to the line selected and solder to its PCB Pad. Please refer to the Figure 1 for better demonstration.

IP223 Serial	Pin on U45 of the board		KCT-19 Accessory Conn.
Signal
	Line 1	Line 2
TXD	11	10	14
RXD	To the pad	To the pad	15
	of pin 12	of pin 9

2.3 TK-x90 Model Cable Assembly:

The tables below show the assembly cable for the TK-x90 model radio.

Signal	IP223 DB25	TK-x90 Radio DB25
Ground	7	7
PTT Common	2	7
PTT	14	2 Aux Input (Programmable)
COR	20	20 AO1 (Programmable)
RX+	24	17
TX+	25	13

2.3.1 IP223 Rev F or higher Board Configuration:

Set the jumper J35 to B position for line 1 and the jumper J26 to B position for line 2

IP223 Serial	IP223 DB9		TK-x90 Radio DB25
Signal
	Line 1	Line 2
TXD	9	4	10
RXD	1	6	9