grossman@bbn.com (Martin Grossman) (07/31/89)
After reading article in August '89 "73 Amateur Radio" page 34 "Control Your Rig from a PC" my brother KA1PPG (without usenet access) asked if its do-able on his rigs. I've read both manuals on his ICOM IC-740 and IC-251. It seams not possible on the 740 since the only leads that are come close are: pin # Description 11 Input for TRANSVERTER control. When 8 Volts DC applied, the set can operate with a transverter. 12 Output reference voltage for band switching 13** Output for external band switching It seams do-able on his 251 because it has the following connections on the ACC connector: pin # Description 16 Control signal (DBC) input terminal for external control 17 NC 18 NC 19 Control signal (DV) output terminal for external control 20 Control signal (RT) input terminal for external control 21 Data signal (DB1) input/output terminal for external control 22 Data signal (DB2) input/output terminal for external control 23 Data signal (DB4) input/output terminal for external control 24 Data signal (DB8) input/output terminal for external control Now the article mentions that some radios have an input and output that are 5V rs232 signals but neither of these do. So can someone explain (or point me in the right direction) how to use pins 16-24. PS I can easily make my brother a board like mine that uses an 8255 PPI chip for digital control, if thats whats needed.
jpainter@tjp.East.Sun.COM (John Painter - Sun BOS Hardware) (08/04/89)
In article <43525@bbn.COM> grossman@bbn.com (Martin Grossman) writes: > >pin # Description > >16 Control signal (DBC) input terminal for external control >17 NC >18 NC >19 Control signal (DV) output terminal for external control >20 Control signal (RT) input terminal for external control >21 Data signal (DB1) input/output terminal for external control >22 Data signal (DB2) input/output terminal for external control >23 Data signal (DB4) input/output terminal for external control >24 Data signal (DB8) input/output terminal for external control > > >Now the article mentions that some radios have an input and output >that are 5V rs232 signals but neither of these do. > ICOM makes a board to covert from parrallel to serial for the older ICOM equipment. Try AES or HRO (I can't remember the part number off the top of my head) I believe it is about $25.00 at discount. /Tjp -disclaimer:> I am not a HAM soo... what do I know. (sorry, bad taste form code/code-free discussions) useless blank lines follow to satisfy silly mailer requirement 'n' now