Hello all and Markus congrats to your successful experiment.

With my car audio PA, my 10h/20t T-antenna and my GF-62 I am ready for improving my ODX - 200m, hi - soon. I now got the parts for the coil and that will be next.

What I am actually concerned about is the right transformer.

Markus, what transformer did you use?

I think the 100V audio transformer was not the best choice. I now use a ferrite transformer but in both cases it was just about 500V at the secondary. Now I wonder how I can get more voltage. I've got a couple of tranformers in my junk box but this one seems to be the best of them but not the best at all.

I was thinking about an iginition coil,  backfire line scan transformer or a transformer from a microwave oven. But I wonder if they are suitable for that frequencies and if they stand QRSS for a longer time.

And thanks for you all for this instructive discussion. I never expected that when I started the thread just warming up my old <9kHz stuff from the past.

Horst DO1KHS

WEB.DE DSL: Internet, Telefon und Entertainment für nur 19,99 EUR/mtl.!    http://produkte.web.de/go/02/