If you have peaked alignment on one of those two stations, that could be a cause of the trouble. It is usually best to peak IFs and the trimmers on the tuning condensor on the upper end of the dial on the weakest station you can still pull in- Using a signal generator is best, but in a pinch, acceptable results can be achieved without one.
:I am working on a Crosley D 25. After replacing all caps, I find that I have reception at only two local very strong stations. There is slight distortion when tuned two one of these two strong stations. When my fingers touch the loop antenna the reception becomes louder, but I do not receive any other stations other than the two strongest in my local area.. There is no hum in the radio anymore.
:The tubes have been tested with two replacements made.
:Any suggestions on where to take this project next?
:Thank you.
:Hi,
:If all caps are connected correctly, and leads dressed out correctly so there are no shorts- It could be alignment, it could be a converter tube not as good as it should be, It could be a resistor has shifted in value in the converter section.
:
:If you have peaked alignment on one of those two stations, that could be a cause of the trouble. It is usually best to peak IFs and the trimmers on the tuning condensor on the upper end of the dial on the weakest station you can still pull in- Using a signal generator is best, but in a pinch, acceptable results can be achieved without one.
:
:
:
:
:
:
:
::I am working on a Crosley D 25. After replacing all caps, I find that I have reception at only two local very strong stations. There is slight distortion when tuned two one of these two strong stations. When my fingers touch the loop antenna the reception becomes louder, but I do not receive any other stations other than the two strongest in my local area.. There is no hum in the radio anymore.
::The tubes have been tested with two replacements made.
::Any suggestions on where to take this project next?
::Thank you.
:On the off chance that you did not replace the paper caps, but only the filter caps, I would replace the paper caps too, as they may have dried out to the point where only the strong signal stations can come through.
:
:
::Hi,
::If all caps are connected correctly, and leads dressed out correctly so there are no shorts- It could be alignment, it could be a converter tube not as good as it should be, It could be a resistor has shifted in value in the converter section.
::
::If you have peaked alignment on one of those two stations, that could be a cause of the trouble. It is usually best to peak IFs and the trimmers on the tuning condensor on the upper end of the dial on the weakest station you can still pull in- Using a signal generator is best, but in a pinch, acceptable results can be achieved without one.
::
::
::
::
::
::
::
:::I am working on a Crosley D 25. After replacing all caps, I find that I have reception at only two local very strong stations. There is slight distortion when tuned two one of these two strong stations. When my fingers touch the loop antenna the reception becomes louder, but I do not receive any other stations other than the two strongest in my local area.. There is no hum in the radio anymore.
:::The tubes have been tested with two replacements made.
:::Any suggestions on where to take this project next?
:::Thank you.
At night, many transmitters power up, as others power down as their licensing permits. The atmosphere at night is also much more conducive to improvements in reception.
The .1 cap is plenty close enough in value to the .08.
You might try when reception is good, tune to a faint station towards the upper end of the tuning range, and tweak the IF's for strongest signal. Then try tweaking the trimmer on the tuning cap large tuning section (small section is the oscillator, and you can use this to bring a station broadcasting at 1600 KHz to a point on the dial corresponding to 1600 KHz(KC).
You will probably find some issues of channel discrimintation- namely lack of it as you tweak, but you should be able to adjust even by ear, well enough to get single stations tuning in clearly. Often you may have to go back and tweak the IFs carefully to get sharp tuning. Unless you are almost exactly between two transmitters at the same frequency, you should be able to tune individual station. And this takes patience.
:::John, I did notice that one of the caps was .08. I did not have a .08 and replaced that cap with a .1. Do you think that 20% difference could have affected the reception? Interestingly, last night the radio worked. This morning I only receive static.
::Thanks for your assistance,
::Greg
:::
::::On the off chance that you did not replace the paper caps, but only the filter caps, I would replace the paper caps too, as they may have dried out to the point where only the strong signal stations can come through.
::::
::::
:::::Hi,
:::::If all caps are connected correctly, and leads dressed out correctly so there are no shorts- It could be alignment, it could be a converter tube not as good as it should be, It could be a resistor has shifted in value in the converter section.
:::::
:::::If you have peaked alignment on one of those two stations, that could be a cause of the trouble. It is usually best to peak IFs and the trimmers on the tuning condensor on the upper end of the dial on the weakest station you can still pull in- Using a signal generator is best, but in a pinch, acceptable results can be achieved without one.
:::::
:::::
:::::
:::::
:::::
:::::
:::::
::::::I am working on a Crosley D 25. After replacing all caps, I find that I have reception at only two local very strong stations. There is slight distortion when tuned two one of these two strong stations. When my fingers touch the loop antenna the reception becomes louder, but I do not receive any other stations other than the two strongest in my local area.. There is no hum in the radio anymore.
::::::The tubes have been tested with two replacements made.
::::::Any suggestions on where to take this project next?
::::::Thank you.