Craig,
Here's an article by Mike Tuggle of Hilo, Hawaii, who, IMHO, is the top xtl set DXer in the world. I've recently heard a sound clip of WWL 870 New Orleans that he recorded on his set in Hawaii. My ideas on set construction are without shame, "lifted" from this article. My front end antenna coil uses a 130 mh solenoid of 660/46 litz. Mike uses a ferrite core/litz combo. http://www.antiquewireless.org/otb/dxxtal.htm 660/46 litz has been through experimentation by many determined to be without equal. 44 works, but 46 seems to be best for MW. Unloaded coil Q exceeds at 1000. Hundreds of schematics and designs are at www.crystalradio.net Home of the annual dx contest is at www.crystalradio.us Photos and descriptions of competitive sets are in the photo album including one by yours truly. Lem Morrison's antenna tuner looks like a Collins RX. My set has logged close to 400 MW stations from my qth. We also have a one active device contest featuring regens and exalted carriers. I didn't have this set ready for last year: my set was a one tube regen which overloaded badly with my local pests. This one tube superhet design by Jack Bryant is superb and handles the locals like the superhet it is: http://home.bellsouth.net/p/s/community.dll?ep=87&subpageid=277688&ck= The schematic is in Jack's One tube folder. This stuff can hook you deep if you are not careful, which is probably just what you wanted to hear. <g> 73, Gil NN4CW _______________________________________________ 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]
