Bob, If you can see a drop on the RYDATA voltage when you switch from ANT1 to ANT2, you can chase that bit through the first shift resister - look for a similar drop at U2 pin 18 (and U3 pin 3). It will only drop for the change from ANT1 to ANT2 (and not the other way 'round), and you get only one chance to look for it after tapping the button.
The FPDATA lines communicate different data, so there is no proper comparison between the relay control and the front panel control. 73, Don W3FPR > -----Original Message----- > > Jack, as I mentioned to Don, I get NO relay action on ANY relay, > as I switch > from ANT1 to ANT2 and /or adjust POWER on the K2/KPA100. The > KAT100 front > panel LEDs light up correctly. > > I was almost certain that before when I checked I saw no change > on RYDATA, > but I checked again and found that RYDATA does indeed switch from > steady 5v to > steady zero and back, when I switch from ANT1 to ANT2 and back. > POWER adjust > has no effect on RYDATA. FPDATA is at 5v for for all positions > of the K2 > panel, although FPDATA briefly drops and returns to 5v when I > adjust the K2 and > the KAT100 LEDs switch. > > -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.4/57 - Release Date: 7/22/2005 _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
