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G6Tanuki · 6th Apr 2020, 6:44 pm

Considering this, I'm reminded of a rather good German military receiver, which used lengths of 'micro-hardline' UHF coax as meandered-quarterwave-lines in its front-end.

"Snakes" they were nicknamed.

Perhaps you could adopt this approach? To be honest it really confused the first set of bench-techs who had to deal with it.

"What's this 'schlange-schwingungskreis' thing? There's no front-end tuned-circuits! How can this work!"

6th Apr 2020, 6:44 pm	#12
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 14,007	Re: 6 metre 4 pole filter Considering this, I'm reminded of a rather good German military receiver, which used lengths of 'micro-hardline' UHF coax as meandered-quarterwave-lines in its front-end. "Snakes" they were nicknamed. Perhaps you could adopt this approach? To be honest it really confused the first set of bench-techs who had to deal with it. "What's this 'schlange-schwingungskreis' thing? There's no front-end tuned-circuits! How can this work!"