Harris RF-350 (RT-1446/URC) Remote Connector/Serial/TNC Connections

NOTE:
In REMOTE mode, the only active Audio I/O is from the J9 REMOTE connector. MIC, 
AUD2 and PATCH audio inputs are disabled when the radio is in REMOTE mode.
PTT is normally disabled in REMOTE mode.  An '0< (apostrophe, zero, line-feed)
command will enable the MIC and TB1 PTT.  [ An '1< (apostrophe, one, line-feed)
disables PTT.]  The REMOTE audio output is always enabled, but the audio input
is disabled when the RF-350 is not in REMOTE mode.


J9 REMOTE                  Computer Serial Port
25 pin min. "D" Female     9 pin min. "D" Female

1                          1-NC
2--------------------------3
3--------------------------2
4                          4----6
5                          7----8
6                          9-NC
7--------------------------5
8
9                          PK-232/DSP TNC        Harris TB1 (Audio)
10                         Connector
11                         
12------------GND----------Brown/Shield----------TB1-12 (GND)
13------------Audio OUT----Green

                           Red-------------------TB1-11 (PTT)
                           Black-NC

14
15
16
17
18
19
20
21
22
23
24-----------Audio IN-----White
25-----------GND----------Brown/Shield

NOTE:
Connect GNDs together (J9-12, J9-25, TNC Brown/Shield, TB1-12)
PTT is active when pulled down to 0v.

For MARS-ALE or other sound card modes:
Connect J9-24 to tip and J9-25 to sleeve of speaker or line-out of computer.
Connect J9-13 to tip and J9-12 to sleeve of microphone or line-in of computer.
Connect TB1-11 to PTT signal (0v. = keyed) and TB-12 to ground.