08-26-2021, 06:20 PM
In some ways this is going to be a situation of the blind leading the blind. I lucked out with this second 48-482 I restored in that when I was all done with the re-cap, the FM was working very well. I really did nothing more than slight adjustment of the odd little condensers atop the main tuning condenser to get it right on tuning wise and maximum strength. I did that just with a ruler at the base of the dial plate as shown in the alignment instructions, finding a station, hearing its frequency when they said it, and then using the ruler and dial reference in the instructions to dial it in exactly.
You will find a different, and better explained, set of alignment instructions for FM in the Rider manuals, volume 18, Philco pages 93 - 107. I have used it to set the FM IF frequency, and do general FM alignment. It does work, and does not require an FM signal generator. I will probably use that, and trust in luck when I go back and try to get the FM on the first one I restored working as well as the FM works on this latest one. I strongly suggest getting a set of the high resolution scanned CDs of the Rider Manuals. You can find them on eBay. https://www.ebay.com/itm/110552444760?ha...XQLbVRaB6W Well worth the money ! Or, you can use Nostalgia Air's scans, which are not as high res, but will work. http://www.nostalgiaair.org/Resources/637/M0013637.htm (Yours is: http://www.nostalgiaair.org/Resources/617/M0013617.htm ) Using both the pictures from the Philco pages on this site for the location of various components used in alignment, and the Rider instructions we should be able to get thing working as we wish. By the way, do you have the built in antenna hooked up to the little 4 pin socket on the chassis back? It goes from the plug through a wire 20 inches long to a little metal clamp that goes around the power cord, and capacitively uses the cord as an antenna. It works very well on my radio, and was what I used for tweaking the alignment. If you have the little plug, wire and clamp you are in luck. If not you'll have to mouse something up. You can use a 1 inch square piece of steel tin can (not aluminum) for the little piece that clamps around the line cord. The 20 inch length of the wire to the clamp is important, and slide it back and forth a bit on the line cord until it gives you the best signal. It should be about 18 inches give or take a bit from where the line cord comes out of the chassis.
So good luck to you. I will need it myself when I tackle the first one I restored again. Also, if, with the antenna hooked up properly, your FM seems to be working OK, don't go crazy. Better to leave well enough alone.
You will find a different, and better explained, set of alignment instructions for FM in the Rider manuals, volume 18, Philco pages 93 - 107. I have used it to set the FM IF frequency, and do general FM alignment. It does work, and does not require an FM signal generator. I will probably use that, and trust in luck when I go back and try to get the FM on the first one I restored working as well as the FM works on this latest one. I strongly suggest getting a set of the high resolution scanned CDs of the Rider Manuals. You can find them on eBay. https://www.ebay.com/itm/110552444760?ha...XQLbVRaB6W Well worth the money ! Or, you can use Nostalgia Air's scans, which are not as high res, but will work. http://www.nostalgiaair.org/Resources/637/M0013637.htm (Yours is: http://www.nostalgiaair.org/Resources/617/M0013617.htm ) Using both the pictures from the Philco pages on this site for the location of various components used in alignment, and the Rider instructions we should be able to get thing working as we wish. By the way, do you have the built in antenna hooked up to the little 4 pin socket on the chassis back? It goes from the plug through a wire 20 inches long to a little metal clamp that goes around the power cord, and capacitively uses the cord as an antenna. It works very well on my radio, and was what I used for tweaking the alignment. If you have the little plug, wire and clamp you are in luck. If not you'll have to mouse something up. You can use a 1 inch square piece of steel tin can (not aluminum) for the little piece that clamps around the line cord. The 20 inch length of the wire to the clamp is important, and slide it back and forth a bit on the line cord until it gives you the best signal. It should be about 18 inches give or take a bit from where the line cord comes out of the chassis.
So good luck to you. I will need it myself when I tackle the first one I restored again. Also, if, with the antenna hooked up properly, your FM seems to be working OK, don't go crazy. Better to leave well enough alone.
