"So I guess the correct sequence would be to press TUNE on the KAT500 and then push TUNE on the K3 and the KPA500 would not KEY. Correct? Why not have pushing TUNE on the KAT500 initiate the whole sequence...unkey the KPA, start the TUNE on the K3 and tune?"
That's may not be as perfect a solution as you might think. While I developing my Kenwood/KAT500/KPA500 controller I found that KAT500 enabled the key line when its internal logic saw the tune sequence had terminated. That was before TX had completed and there was a large power spike. KAT500 should not re-enable the key line until it detects RF has gone to zero. (Maybe it works better with full Aux bus integration with a K3). For me the solution was simply to manage the entire tuning sequence with my controller. One key press and the rest is automatic. The sequence is: Detect tune request Ensure KAT500 keyline is inhibited Initiate tune TX and increase tune power to level needed by KAT500 Initiate KAT autotune Detect end of autotune Terminate tune TX and reset tune power to low level Verify TX has terminated Enable keyline (but only if KPA500 OPER mode is active) It may sound complicated but the effort of developing the code is more than paid for by having a completely automatic single button capability. As a bonus I save the tuning solution that existed before tune initiation so it can be restored if I don't like the new solution. 73, Andy, k3wyc ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
