When the KAT500 is in Auto mode I think the Auto LED flashes when it is
waiting for RF and inhibits the key line.
On 3/16/2013 7:01 PM, Dick Dievendorff wrote:
As others have said, the mechanism the KAT500 uses to inhibit the amplifier is
the amplifier key line, sometimes labeled PTT. The KAT500 manual shows cabling
diagrams that cause the K3 key line to go thru a relay in the KAT50o to the
amp. The amp doesn't change to standby, it is simply not keyed and therefore
does not amplify during ATU tuning operations.
73 de Dick, K6KR
On Mar 16, 2013, at 6:17 PM, Bill Wiehe <bw39...@yahoo.com> wrote:
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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