[Elecraft] K3 , KPA500, KPA500 interaction.

Sat Mar 16 21:54:35 EDT 2013

The KPA500 is "inhibited" during a tune when the key line is opened (not grounded). Although it does not produce high-level RF, it is *not* in "Standby". The KAT500 will close (ground) the key line when it is done immediately restoring full output. 

73 Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bill Wiehe
Sent: Saturday, March 16, 2013 6:18 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K3 , KPA500, KPA500 interaction.

As a follow up the recent information passed along on the subject under another thread (* on KPA500) I am looking for some additional clarification. I was under the impression that
KPA500 would go into standby automatically when the KAT500 went into a tune mode.
Apparently this is not the case unless I have something set wrong. I have found when changing bands if I initiate the K3 “tune cycle” the KPA500 will not go into standby.The KPA500 goes in and out of transmit mode and eventually will go into a "soft fault" if there is an initially high (SWR) while the KAT500 continues to look for a match. The fault due to high reflected power of course is as it should be and must be cleared to proceed. Just curious but is this correct expectation or is there a set up function I missed that automatically places the KPA500 in standby  when the   As I said I was under the impression that whenever the KAT500 did a tune the KAP500 would go into standby. This is not a major problem as I have set up the KPA500 now to go to standby whenever I change bands as well as initial start-up. I am still curious however if I missed something.
Thanks

Bill – W0BBI
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