[Elecraft] KPA500 and KAT500 Enhanced mode tracking **SOLVED**

[Rick KC2FD]

I found my problem. The issue was that even though I successfully
incorporated enhanced mode frequency tracking from the IC7300 to the KPA500
and KAT500, the radio was keying a x0mS burst of RF even though the
frequencies were previously 'learned'. I kept looking into the Elecraft
setups, manual, programming and my converter setup. The problem however was
in a long overlooked menu setting in the 7300! Sometime in the past I had
set "SET, CONNECTORS, FUNCTION, TUNER, PTT Start", to ON which initiates a
tuning cycle to the tuner every time the VFO moves more than 1 kHz. Duh.
I've been looking for this for days. I switched it to OFF and the frequency
tracking works flawlessly. In summary, I have the the IC7300 REMOTE serial
data connector feeding an atmega328 microntroller (RX) developed on an
Arduino Uno. The code is based on an open sourced Band Decoder by the
talented guys at remoteqth.com. The TX data is now in the serial format
emulating Kenwood transceivers. This data is converted to RS232 and feeds
both the KPA500 and KAT500. The KPA500 menus must be configured to accept
SERIAL data at the correct baud rate that the converter code and IC7300 is
set to. In my case I am using 4800 baud. Although not necessary to go
faster, I may try to go up in steps to the 19200 upper limit of the 7300.
*Using this setup, the KPA500 switches bands as the IC7300 QSYs and even
more importantly, the KAT500 senses the 7300 frequency and switches to the
learned LC combinations for those band segments. This is now done WITHOUT
having to send a burst of RF to the tuner to tell it what band and frequency
segment we are now operating on. Contesters and DXers should find this very
useful as they switch from band to band or QSYing within a band. *Of course
those who operate a K3, K4, Flex or Kenwood transceiver, should be able to
do this inherently. Only ICOM transceivers require this conversion. Thanks
to Elecraft engineering, remoteqth.com and Rich W2RB for their inputs on
this project. 



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