On 25-Apr-2007, Hank Zoeller wrote:

Ken Fowler wrote:
Would you like to add Computer Control to your Harris Radio? Please visit my website,
http://www.ko6no.com, for information about an RS232 Remote Adapter for your RF350.

Ken, this is a great idea!

From the manual on your web site, it appears that the audio channels
are brought out to the DB25 connector and that the baud rate could be
jumpered for 9600 thus making your board compatible with the Harris
RF-352 (C-11329/URC) Remote Control Unit. (At least in RS-232 mode,
obviously two/four wire or RS-422 would not be supported.)

Is that correct? Is your board compatible with the Remote Control Unit
(with those restrictions) or is it intended for use strictly as part of
a software solution?

Either way, this is still a great idea and it must have been a
significant engineering effort. Very commendable -- thank you!
--
HZ

Thank You Hank.

I don't know. Maybe someone in the MARS community has a Remote Control Unit to test it. If the
C-11329 can get by with RS232, it should work. It looked to me like Harris used the 300 Baud Audio
Modem to connect various units like tuners and amplifiers. I used four of the RS422 pins for RS232
Handshaking and there are no provisions for the Telephone Modem. I also left out the connections
for AUX TXD and AUX RXD because they don't go anywhere. We found that some of the commands did not
work when the jumpers were in the non-ADAPT baud settings. The radio would return its status and
would change frequency but there was no control of Mode or AGC. There are also differences in
Command vs Response between the V601C and V604M EPROMs. Our intended use is as a CAT opertion.

Thank you for your comments.

Ken Fowler