Dear Koert, It probably isn't the problem, but you might check that the core used for T4 is really an FT50-43. The wrong core might not have enough permeability at the lower frequencies.
73 Kevin w9cf >Dear all, > >Please find my emails to Elecraft support below. Is there maybe somebody with >additional tips? > >Thanks!! > >73 Koert PA1KW _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com

