Adding a tune control that has reduced power output

Bill K9HZ has added a tune control to his circuit to even up output power across the bands.  This will be featured in his ATU that is expected to b be documented shortly.

With the addition of a transistor driver for an additional relay and one additional potentiometer you can now have a tune button that will tune your rig with lower power output.    Pushing a tune button while keying the rig will result in lower power output.  Alternatively, you can wire up a DPDT switch for tune with the second throw on the switch wired to PTT.

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