The simple solution is to put the amp in standby, or push tune on the KAT
first, and then tune on the K3. I take it if you push tune first on the
KAT, then it will open the key line first so that the subsequent pushing
of tune on the K3 won't key the amp.
Chuck, KE9UW
Lionel Trains, TCA, LCCA, LRRC
aka Jack, BMW Motorcycles BMWMOA #224
This simple solution may work for tune but what about the following
situation:
Band 160m.
1810 kHz SWR = 1.5
1870kHz SWR = 6
KAT 500 was previously trained and remembers settings for both frequencies.
set up - K3+ KPA500 or any othrer combo capable of full break in
S&P in the contest, assisted. Click on 1810 spot and work station. Then
click on 1870 and start to send in full break in mode. TXD on the radio is 8
ms. T/R switching time of KPA500 is about the same or less. So far no
problems. But now KAT500 needs to switch to 1870 setting. M/B timing of the
relays used in KAT500 is 15 ms at best. So we have at least 7 ms of hot
switching relays in KAT500 and possibly KPA500 switching to fault (or both).
73, Igor UA9CDC
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