Gil,
I am not sure how you would isolate the RF Grounds with an L Match
tuner, but I have given consideration to building a sort of "dual
KAT100" into an EC2 case. One set of firmware to run both sets of
relays and split the normal inductors into 2 halves and connect the
capacitors from one board to another (relays would switch both sides of
the capacitors to preserve balance). The extra board would switch the
inductors in on both sides of the circuit. It would likely require the
addition of a 1:1 balun after the wattmeter and before the LC circuits.
I figure the additional KAT100 board would work well since most of the
wiring is already laid out on the traces. The grounding for the
capacitors would have to be investigated but even if it required adding
a bus wire for the capacitor commons, it should work.
Other than thinking about it, I have not put any effort into it - no
need for a tuner here at this time and I have other irons in the fire.
73,
Don W3FPR
Gil Cross wrote:
> Has anyone isolated the rf grounds and made one of the tuners into a balanced output. Or even attempted to do so.....
>
> Gil K8EAG
>
>
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