Thanks Andy.
I'm starting to get my head around this. "Tis a pity that Elecraft didn't allow
for the KPA500 to control the KAT500 via the band data bus and have an
integrated Amp/Tuner combo that didn't require a proprietary interface.
The tuning solutions are in the tuner memory so telling it, or letting it
measure, the frequency recalls them.
Wes
On 11/18/2020 3:02 AM, Andy Durbin wrote:
"I simply want to know:
1) does the KAT500 also switch with BCD data
and
2) if so, can those data come from a KPA500 that is being controlled with serial
data. (When I say Aux cable, I'm referring to the 15-pin cable that includes BCD
(band) data."
1 - The KAT500 schematic shows it receives BCD band data. I assume that
could be used to control the selected antenna but I don't see how it would be
useful for selecting a tuning solution.
2 - The KPA500 schematic shows that BCD band data is receive only so it does
not appear to be capable of sending band data to the KAT500.
My "interesting project" computes and outputs Elecraft format BCD band data but I found no use for
it and I disconnected it after initial testing. I control my KPA500 with the serial data band command
"^BN" and I control my KAT500 with the serial data frequency command "f". My KAT500 and
KPA500 always follow my TX frequency. I placed higher priority on avoiding KAT and KPA faults than on
optimizing receive performance when split.
Current KAT500 firmware can only follow VFO A (FA) if listening to a Kenwood
rig that is being polled by a KPA500. The Kenwood TX VFO may be VFO A or VFO B.
73,
Andy, k3wyc
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