I'm just posting this so that someone can tell me ... NO - DON'T DO THAT - or - DO THIS.
I know I could use a loop inside of a compact loop, but a toroid is more appealing for me because of the size and appearance. It looks like the consensus is that I need an Iron Core Toroid ... something along the lines of a T-50-6 (or larger size diameter T-114-6). This will be used as a 'transformer' between a turn (or a few turns) of wire run between the center conductor and shield of my coax, and a single turn of a compact loop. I plan to use this for 80-20m. When I inquired with the original author of the webpage (aa5tb) - he thought he used a ferrite core ... FT-114-43 maybe - he didn't know for certain. It sounds like from some of you - that a ferrite core has significantly less coupling than an iron core. Can I safely assume that if a core is of a low density (reduced coupling), that I can make up for it with more turns on the primary/coax side - however, if it is a high density core - it would be very hard to reduce coupling since the secondary/compact loop side is already limited to one turn? Finally - many of you were able to tell me about the cores - BUT - what core would you use for this application (coupling your transmission line to a compact transmitting loop)? Thanks again - and sorry about the Off Topic post (albeit - it is for a QRP/Elecraft radio). - Daniel / AA0NI _______________________________________________ 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
