KD1JV has done that in his new AT Sprint II 4-band miniature rig, see
manual
on http://www.qsl.net/kd1jv/ats2.HTM

I don't see any sign of source code. Do you?
Maybe I'll contact him.

Neither do I, but then you just asked whether it has been done. And, yes it
has been done


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Sverre
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www.qsl.net/la3za