02-12-2025, 09:53 AM
UPDATE: I was able to pick up a signal generator on the cheap (amazingly enough) on feebay and I did an IF alignment following the instructions in the Riders manual as best as I could (I didn't use an "output meter" because I wasn't sure where to attach the probes of my VTVM to get the "Output Meter" to do what the Riders was saying it was supposed to do, so I just did it by ear, and Riders didn't say where to attach it at), and I can get the radio to receive stations above 900 kC just fine but below 900 kC and the tuner is practically dead and I know its not anything to do with the antenna coil because other wise it would be completely dead, and not half dead, and also this radio seems to only have RF, and Antenna Adjustments for the upper portion of the tuning dial and nothing for the lower portion of the tuning dial like most radios have.
As far as the IF alignment went the Primary IF alignment was fairly spot on, but the Secondary IF alignment was way off which kind of threw the Primary IF Alignment off a little bit, but that really didn't bring back the lower half of the tuner dial.
Also another strange thing it does is that when I put my hand over the 1st Detector Tube's Grid Cap the radio gets really loud like its supposed to sound but when I remove my hand from the 1st Detector Tube's Grid Cap the radio is barely audible with exception of one local station that comes in really loud no matter what and then there's another local station that that is barely audible on the radio unless I put my hand over the 1st detector tube grid cap, the only thing I can think of is that the 1st detector tube might be bad but I was given a couple of tubes by a fellow radio hobbyist locally that he said supposedly tested good and I was able to confirm that myself but that of course doesn't mean anything though in the world of tubes because I know from experience that some tubes can test good but perform horribly and some tubes can test horribly and perform really well when it comes to used tubes. Also it seems that I'm getting some "ghosting" on the radio dial, some of the stations that show up on the upper band is showing up on the middle of the bandspread (for example one of the local stations is at the frquency of 1340 kC and it shows up again at around 900 kC and the other station that I get in locally is ar 1270 kC and its showing up again on the dial around 960 kC (which there is supposed to be a station there locally but its not that station.) So something is definitely wrong with this radio yet and also when I try to make adjustments to the RF and Antenna Adjustments on the Tuning Capacitor they don't seem to do much except on the stronger stations and even then they don't seem to stay at the same adjustment you adjusted it to, and also the adjustments seem to be not consistent across the dial.
Any ideas as to what could be going on?
As far as the IF alignment went the Primary IF alignment was fairly spot on, but the Secondary IF alignment was way off which kind of threw the Primary IF Alignment off a little bit, but that really didn't bring back the lower half of the tuner dial.
Also another strange thing it does is that when I put my hand over the 1st Detector Tube's Grid Cap the radio gets really loud like its supposed to sound but when I remove my hand from the 1st Detector Tube's Grid Cap the radio is barely audible with exception of one local station that comes in really loud no matter what and then there's another local station that that is barely audible on the radio unless I put my hand over the 1st detector tube grid cap, the only thing I can think of is that the 1st detector tube might be bad but I was given a couple of tubes by a fellow radio hobbyist locally that he said supposedly tested good and I was able to confirm that myself but that of course doesn't mean anything though in the world of tubes because I know from experience that some tubes can test good but perform horribly and some tubes can test horribly and perform really well when it comes to used tubes. Also it seems that I'm getting some "ghosting" on the radio dial, some of the stations that show up on the upper band is showing up on the middle of the bandspread (for example one of the local stations is at the frquency of 1340 kC and it shows up again at around 900 kC and the other station that I get in locally is ar 1270 kC and its showing up again on the dial around 960 kC (which there is supposed to be a station there locally but its not that station.) So something is definitely wrong with this radio yet and also when I try to make adjustments to the RF and Antenna Adjustments on the Tuning Capacitor they don't seem to do much except on the stronger stations and even then they don't seem to stay at the same adjustment you adjusted it to, and also the adjustments seem to be not consistent across the dial.
Any ideas as to what could be going on?