Hi Joe,I'm familiar with this article, and with the opamp used. That's an audio-frequency opamp; it only has a few dB gain at 500 kHz; it would have next to nothing in the higher MW range. The lower in frequency you go, the more gain it will have, so it would work better in the NDB band. But any small loop is not very sensitive at LF, especially if used indoors. A much better LF loop is the "Shielded active loop" on VE7SL's webpage http://imagenisp.com/jsm/
73, Steve----- Original Message ----- From: <kj8o@xxxxxxxxxx>
To: "IRCA" <irca@xxxxxxxxxxxxxxxx>; "NRC" <am@xxxxxxxxxxx> Sent: Monday, November 24, 2008 9:41 AM Subject: [IRCA] Antenna question
Hello everyone, During the weekend, I got to hear some of the experimental stations in the 500-515 kHz (600 meter) band. One thing led to another and I soonencountered a design for a 500 kHz simple loop antenna that had been postedon the web (see http://www.500kc.com/WA1ZMS/index.htm ). Now I am curious if any list member has tried this antenna design (or something similar). Being so close to the bottom edge of the MW Broadcast band, I'd imagine it would perform quite well there as well. And the non-directional beacons between 200 and 430 kHz should also be heard quite well.www.500kc.com is requesting reception reports of stations heard. I'll notifythe group should I receive any QSL cards or letters. -- 73 de Joe Miller, KJ8O, Troy, MI -- Grid EN82 -- ------ WOW! Homepage (http://www.wowway.com) ------
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