Reg Edwards wrote:

Johann,

Practically ANYTHING will do for a coaxial or similar choke balun. It's the
most uncritical component in the whole of radio engineering.


....



I have a program which does the calculations but which I have not yet fully
tested except for the resonant frequency. So it is not yet available from my
website.

I have attached small program (43 kilo-bytes) named SELFRES2 to this
message, for which I may be reprimanded. It is not zipped up. You should be
able to run it immediately after download just by clicking its icon. Let's
see.

Thank you very much for your in depth explanaition. The program worked
just fine.

I am not a "hamer" but do CB-radio and the only thing which is legal
there is to play around with different antenna types. I am still
starting to get into the whole matter by reading books and info on the
internet.

What do you get?

I get a self resonance frequency of 23MHz and ~ 9 kOhm @ 28MHz test
frequency. For CB radio this should be pretty much sufficient, though
now i would try to get resonance frequency closer to operation frequency.

----
Reg, G4FGQ