09-02-2013, 06:24 PM
If you are getting each station at two places on the dial then there definitely is a problem with the alignment or the IF circuit itself. My 48-482 tunes stations with a single wide bandpass response.
The directions I gave are for adjustment of the FM detector only. If it is aligned and working properly then you can proceed to the IF. Since you are injecting signal into the last IF, you are bypassing the previous stages which may not be working correctly. When setting the generator, have the counter connected and check the center freq with zero sweep width to insure it is right on 9.1 MHz.
The directions I gave are for adjustment of the FM detector only. If it is aligned and working properly then you can proceed to the IF. Since you are injecting signal into the last IF, you are bypassing the previous stages which may not be working correctly. When setting the generator, have the counter connected and check the center freq with zero sweep width to insure it is right on 9.1 MHz.
