[ARC5] More BC-455 IF thoughts
J Mcvey
ac2eu at yahoo.com
Fri Apr 13 22:15:30 EDT 2018
Well , the BC-455 that I THOUGHT had all three IFs changed to 85Khz wasn't that .The 1'st IF numbers were faded so I ASS-u-med that they were all the same. Unfortunaely, only the 2nd and 3rd IF were 85Khz , The ist IF tuned out to be the original, thus all of the heavy mods were about a second oscillator which he must have removed the Xtal or whatever, as there was no sign of a secondary osc circuit coil either.
Anyway, I was wondering if stagger tunning the IFs might be a way to narrow the BW on the cheap?For instance 1st IF tuned at 2830 , 2nd tuned in the LSB of the first IF and the 3rd IF tuned in the LSB of the 2nd.AM might sound funky, but LSB and CW should be a lot more selective, no?
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