Original poster: "Herwig Roscher by way of Terry Fritz <twftesla-at-uswest-dot-net>" <herwig.roscher-at-gmx.de> Dr. Duncan Cadd wrote: > One way round this which I've used with a crystal set....... Duncan, Thank you for your proposals and advice. I shall perform some tests as early as I have found a suitable modulation transformer. Regards, Herwig