David, I use Amidon ferrite beads to make my transformer. I also use military commo wire to feed my rx antenna's. Here is how Gary Breed, the K9AY loop inventor describes making the transformer: "My K9AY Loop and 9:1 Beverage transformers are "binocular" using two large 77 material beads (Amidon FB77-6301) with separate windings of #22 AWG wire -- 3 turns for the 50 ohm side and 9 turns for the 450 ohm side. The measured loss is around 0.2 dB from below 160M to at least 20M. This material and winding scheme works well at lower frequencies, too, since many
loop users are Broadcast and low frequency DXers." I epoxy the beads side-by-side. www.amidoncorp.com $.42 @. They used to sell them by the dozen for $5. You can connect your rx to the antenna using either coax or zip cord as Nick suggests. I just happened to have some military commo wire. I used to use coax, but found the mil. commo wire less obtrusive and works fb. For the xfrmr, I used #24 wire--it's all I had on hand at the time. 73 Gil _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
