In article ,
Geoffrey S. Mendelson wrote:
Martin Potter wrote:

The sunspot peak of 1968-69 helped a lot. The band was pretty dead
(thankfully) due to low MUF during the early 1960s.

When I said popular, I was refering to the operation within the U.S.
law (which was and is very different than the rest of the world) which
prohibits "skip" operation.

Not at all. It just mandates a certain power input to the finals.

During REALLY GOOD conditions, 4 watts will get you plenty of skip.
I don't remember 1968, but I remember 6 meter cross-country stuff
with milliwatt CW outputs in 1979. And the NEXT cycle coming up is going
to be even better.

Note that Class D wasn't all there was. There was Class C which allowed
pulse modulation in the 26 MHz range for remote control, and Class A
citizens band which was AM in the 450 MHz range. I don't recall what
Class B was.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."