Hi Steve: Yes, Rothman Modulation is a sort of "clamp tube" modulation
where a tube is placed at the antenna output point and the RF is "clamped"
to look like 100% modulation. As I recall, it mainly modulates downward to
acheive modulation because there is no sideband power from the modulator
to a
There is already an AM group on approx 14.286. I haven't run 20m AM since
the early 70's. It is OK for one-on-one contacts, but when roundtables
develop, there is the problem of the erormous skip zone on 20. You can
count on one or more members of the roundtable being inaudible, so you spen
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