I replaced all the caps and some other electronic parts.

Is this an alignment issue? Or could something have gone bad elsewhere? I can't believe it could be that far out of alignment...

Thanks for any assistance.

Jeff S.

In all probablility, the oscillator is out of alignment. Being 200 kHz off is not a huge amount (as you imply).

:The S-38 I'm working on has a tuning issue. When the variable gang condenser is fully open, I receive a station (1390kc) which is nowhere near the 1600+kc it should be receiving. All other local stations are received uniformly at 200+kc below the line on the dial marker. I checked the other bands and they pretty much do the same thing. The band sweep works, but can't receive past 1390 with a fully open gang.
:
:I replaced all the caps and some other electronic parts.
:
:Is this an alignment issue? Or could something have gone bad elsewhere? I can't believe it could be that far out of alignment...
:
:Thanks for any assistance.
:
:Jeff S.

This 2nd radio business assumes that you don't have a frequency counter.
Doug

:Jeff: Check the S38's oscillator frequency with another radio. You should hear a whistle at the known frequcency of the BC station, plus the oscillator freq. Compare that to the correct oscillator freq (= the IF + the BC station freq).
:
:In all probablility, the oscillator is out of alignment. Being 200 kHz off is not a huge amount (as you imply).
:
::The S-38 I'm working on has a tuning issue. When the variable gang condenser is fully open, I receive a station (1390kc) which is nowhere near the 1600+kc it should be receiving. All other local stations are received uniformly at 200+kc below the line on the dial marker. I checked the other bands and they pretty much do the same thing. The band sweep works, but can't receive past 1390 with a fully open gang.
::
::I replaced all the caps and some other electronic parts.
::
::Is this an alignment issue? Or could something have gone bad elsewhere? I can't believe it could be that far out of alignment...
::
::Thanks for any assistance.
::
::Jeff S.

:P.S. The 2nd radio you use to listen for the oscillator whistle should best be digital for max accuracy. You can set the digital radio tuning, and then rock the S38's tuning back and forth until you detect the whistle.
:
:This 2nd radio business assumes that you don't have a frequency counter.
:Doug
:
:
::Jeff: Check the S38's oscillator frequency with another radio. You should hear a whistle at the known frequcency of the BC station, plus the oscillator freq. Compare that to the correct oscillator freq (= the IF + the BC station freq).
::
::In all probablility, the oscillator is out of alignment. Being 200 kHz off is not a huge amount (as you imply).
::
:::The S-38 I'm working on has a tuning issue. When the variable gang condenser is fully open, I receive a station (1390kc) which is nowhere near the 1600+kc it should be receiving. All other local stations are received uniformly at 200+kc below the line on the dial marker. I checked the other bands and they pretty much do the same thing. The band sweep works, but can't receive past 1390 with a fully open gang.
:::
:::I replaced all the caps and some other electronic parts.
:::
:::Is this an alignment issue? Or could something have gone bad elsewhere? I can't believe it could be that far out of alignment...
:::
:::Thanks for any assistance.
:::
:::Jeff S.

:some other radios i worked on have trimmers on the tuning condenser. i have played with those and it can tune you to the next station just by moveing the trimmer. yours might be out of wack
::
:::P.S. The 2nd radio you use to listen for the oscillator whistle should best be digital for max accuracy. You can set the digital radio tuning, and then rock the S38's tuning back and forth until you detect the whistle.
:::
:::This 2nd radio business assumes that you don't have a frequency counter.
:::Doug
:::
:::
::::Jeff: Check the S38's oscillator frequency with another radio. You should hear a whistle at the known frequcency of the BC station, plus the oscillator freq. Compare that to the correct oscillator freq (= the IF + the BC station freq).
::::
::::In all probablility, the oscillator is out of alignment. Being 200 kHz off is not a huge amount (as you imply).
::::
:::::The S-38 I'm working on has a tuning issue. When the variable gang condenser is fully open, I receive a station (1390kc) which is nowhere near the 1600+kc it should be receiving. All other local stations are received uniformly at 200+kc below the line on the dial marker. I checked the other bands and they pretty much do the same thing. The band sweep works, but can't receive past 1390 with a fully open gang.
:::::
:::::I replaced all the caps and some other electronic parts.
:::::
:::::Is this an alignment issue? Or could something have gone bad elsewhere? I can't believe it could be that far out of alignment...
:::::
:::::Thanks for any assistance.
:::::
:::::Jeff S.

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Here's what I would do. Find the smallest section of the tuning capacitors. This will be the oscillator. Note where the trimmer cap is that is associated with that section. Tune the radio to the highest frequency available in your area. Now tune it slightly off frequency in the direction it needs to go. Now tune the trimmer until it is on frequency again. Repeat until the dial and the station frequency are correct. Now find a weak station at the high end of the dial, and adjust the trimmer associated with the large section for best reception. You use a weak station to keep the AVC from working, and the high end because that is where the trimmer has the most effect. If you are happy with the results, leave it alone and enjoy.
Lewis

Initially confirm that your separate bandspread tuning knob setting is not the cause of the error and then the corrective BC band osc hi band tracking adjustment is trimmer A12 as shown.


Initially, place some blue Sharpie “tick” mark references on one side of the standard screw slot to its adjunct
top leaf, so you can come back to there, if necessary.


Pictorial ref:

73's de Edd

Worked like a charm. Thanks to you and the rest for the advice.

JeffS.