On Mon, 29 Mar 2010 08:58:24 +0200 (MEST), Stein Roar LA6FJA-K3RAG wrote:
>I have made a set of coaxstubs for bandpass filter, but it is not enough
>Is it normal with 20-30 db attunation ??
Yes. See http://audiosystemsgroup.com/Coax-Stubs.pdf This is a first draft
that I'm still working on.
>We had big problems during WPX SSB as LN5O we experienced that the stubs didnt
attunate enough between 20 40 & 15m...
You need to buy W2VJN's excellent book on this topic. You can order it for $20
Inrad (the filter people). Also, there are several very useful articles by N0AX
QST. They are referenced in the tutorial (link above).
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