Todd,
In the old days (1960s) we used to tie the ends of our 80 meter dipole coax together against a good ground and it worked after a fashion on 80 meters if we had the correct crystals. ?Of course in a DX 40 the Pi network tuning functioned as an antenna tuner. ? Not the best but it worked.
Be the REASON someone smiles today.
Dave K8WPE
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On Mar 8, 2024, at 7:40?AM, Todd W2TEF <w2tef@...> wrote:
?Thanks for the responses.?
It sounds like 80m on a 40m dipole may be a quixotic pursuit. But that 30m might not be so unreasonable.?
My diople is about 33ft up, fed with about 100' of DRF-400 (with a break in the middle for a lightning arrester). It gets a perfect match on 20m (LED goes out), but only some dimming on 30m and 80m (and transmitting trips the SWR protection on the QMX). I think I got a reasonable match on 60m.
So in theory 30m should work? Are there common mistakes using or building a tuner to which I may have fallen prey? Finding success with 20m made me think I got it right, which leaves me confused why I can't use the same technique to get a match on 30m.
David Wilcox K8WPE