I've been looking at this very issue as part of a project to QRO on the
lower bands. I currently have an MFJ autotuner at the end of a 130 ft
coax run out to the garden. My low band doublet is fed with a balun and
ladder line from there. It's really impractical to run the AUX cabling
out and back as indicated in the KAT500 manual. But it may be practical
to run a keying line out and back and a serial line as Wayne indicated.
Would the key line need buffering with that long a run? A total of 5
wires required. A CAT-5 cable could provide a twisted pair for each
signal line to avoid RFI. Power for the KAT500 could be provided using
a bias-T arrangement as I do now. Any other thoughts/considerations?
73,
Brian, K0DTJ
On 11/3/2018 08:00, Don Wilhelm wrote:
With a remote KAT500, it is still necessary to connect the AUX cables
as indicated in the KAT500 manual for use with the K3/K3S and KPA500.
Alternately, if used in the basic mode, the Keying cable must go first
to the KAT500 and from the KAT500 on to the amplifier. That allows
the KAT500 to prevent keying the amplifier while tuning.
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