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So where exactly would I look for the image? How much higher exactly, based
on the IF's I posted? "Bob Parnass" wrote in message news ![]() The reason that images are so well attenuated on your VR-120 is not due to triple conversion, per se. The 1st IF is so high, that the image is very far away (2 * 248.45 MHz) from the operating frequency. Being this far away, the tuned circuits in the scanner's front end attenuate the image. Consider trying a different antenna. The stock VR-120 antenna has a performance notch near 159 MHz. It may also have a notch at 477 MHz, which is 3 times 159 MHz and that accounts for the problem you described near 477 MHz. On Tue, 29 Jul 2003 22:13:00 +0000, Bruce Markowitz wrote: Got a question about the Yaesu VR-120. It seems somewhat deaf on a few 477 Mhz freqs I would like to try using the IF images (On some older Bearcats, like my 200XLT, I use 498.9125 for 477.2125 due to intermod on the "real" freq) The IF's on this radio are 248.45 MHz, 15 MHZ, 450Khz according to the manual. BUT, I can't hear anything by either adding or subtracting the above IF's to 477.2125 Is there something I am doing wrong, or does a triple conversion receiver not work that way? Any help appreciated!!!! -- ================================================== ======================= Bob Parnass, AJ9S GNU/Linux User http://parnass.com |
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