Can't get any stations but one or two on the high end and then they aren't any too loud. Have changed filters and checked resistors and changed several that were off but remains the same.

Is this a TRF set or a regen?

If it is a regen, then the local oscillator being generated may not be there . Check the frequency of the stations you receive and see if they correlate with the capacitor settings.

If it is a TRF, check for weak tubes or tube voltages.

I can't seem to pull up the schematic easily at home tonite or I could tell.

Thanks
Lou

:Can't get any stations but one or two on the high end and then they aren't any too loud. Have changed filters and checked resistors and changed several that were off but remains the same.

:Is this a TRF set or a regen?
:
:If it is a regen, then the local oscillator being generated may not be there . Check the frequency of the stations you receive and see if they correlate with the capacitor settings.
:
:If it is a TRF, check for weak tubes or tube voltages.

Hi Lou,

Thanks for your reply. It is a TRF set. I have checked tubes and they all seem to check good and tube voltages are there.
:
:I can't seem to pull up the schematic easily at home tonite or I could tell.
:
:Thanks
:Lou
:
::Can't get any stations but one or two on the high end and then they aren't any too loud. Have changed filters and checked resistors and changed several that were off but remains the same.

:OK

Are all the capacitors (variable) tracking each other?

If the caps are mis-aligned relative to each other the tuning will be weak or non-existent.

To tell, you have to tune to a station, loosen one cap on its shaft, and move it around to see if the gain gets better.

Ciao
Lucio

:Is this a TRF set or a regen?
::
::If it is a regen, then the local oscillator being generated may not be there . Check the frequency of the stations you receive and see if they correlate with the capacitor settings.
::
::If it is a TRF, check for weak tubes or tube voltages.
:
:Hi Lou,
:
:Thanks for your reply. It is a TRF set. I have checked tubes and they all seem to check good and tube voltages are there.
::
::I can't seem to pull up the schematic easily at home tonite or I could tell.
::
::Thanks
::Lou
::
:::Can't get any stations but one or two on the high end and then they aren't any too loud. Have changed filters and checked resistors and changed several that were off but remains the same.

::OK
:
:Are all the capacitors (variable) tracking each other?
:
:If the caps are mis-aligned relative to each other the tuning will be weak or non-existent.
:
:To tell, you have to tune to a station, loosen one cap on its shaft, and move it around to see if the gain gets better.
:
:Ciao
:Lucio
:
::Is this a TRF set or a regen?
:::
:::If it is a regen, then the local oscillator being generated may not be there . Check the frequency of the stations you receive and see if they correlate with the capacitor settings.
:::
:::If it is a TRF, check for weak tubes or tube voltages.
::
::Hi Lou,
::
::Thanks for your reply. It is a TRF set. I have checked tubes and they all seem to check good and tube voltages are there.
:::
:::I can't seem to pull up the schematic easily at home tonite or I could tell.
:::
:::Thanks
:::Lou
:::
::::Can't get any stations but one or two on the high end and then they aren't any too loud. Have changed filters and checked resistors and changed several that were off but remains the same.

Hi Lou,
Well after rebuilding the capacitor blocks I get stations across the dial but they are all somewhat weak in volume. The diagram shows 50 volts on the grids of the 71a's and I only have -8 there so think that's why the weak volume. Don't see where they are getting the 50 volts.

hi,iirc grid voltage is measured from filament to grid,not chassis to grid.
which way are you measuring it?

:::OK
::
::Are all the capacitors (variable) tracking each other?
::
::If the caps are mis-aligned relative to each other the tuning will be weak or non-existent.
::
::To tell, you have to tune to a station, loosen one cap on its shaft, and move it around to see if the gain gets better.
::
::Ciao
::Lucio
::
:::Is this a TRF set or a regen?
::::
::::If it is a regen, then the local oscillator being generated may not be there . Check the frequency of the stations you receive and see if they correlate with the capacitor settings.
::::
::::If it is a TRF, check for weak tubes or tube voltages.
:::
:::Hi Lou,
:::
:::Thanks for your reply. It is a TRF set. I have checked tubes and they all seem to check good and tube voltages are there.
::::
::::I can't seem to pull up the schematic easily at home tonite or I could tell.
::::
::::Thanks
::::Lou
::::
:::::Can't get any stations but one or two on the high end and then they aren't any too loud. Have changed filters and checked resistors and changed several that were off but remains the same.
:
:Hi Lou,
:Well after rebuilding the capacitor blocks I get stations across the dial but they are all somewhat weak in volume. The diagram shows 50 volts on the grids of the 71a's and I only have -8 there so think that's why the weak volume. Don't see where they are getting the 50 volts.

My fault, was going from grid to ground. Have 50 from pin 1 to 3. Still can't figure why volume is so low.

:hi,iirc grid voltage is measured from filament to grid,not chassis to grid.
:which way are you measuring it?
:
::::OK
:::
:::Are all the capacitors (variable) tracking each other?
:::
:::If the caps are mis-aligned relative to each other the tuning will be weak or non-existent.
:::
:::To tell, you have to tune to a station, loosen one cap on its shaft, and move it around to see if the gain gets better.
:::
:::Ciao
:::Lucio
:::
::::Is this a TRF set or a regen?
:::::
:::::If it is a regen, then the local oscillator being generated may not be there . Check the frequency of the stations you receive and see if they correlate with the capacitor settings.
:::::
:::::If it is a TRF, check for weak tubes or tube voltages.
::::
::::Hi Lou,
::::
::::Thanks for your reply. It is a TRF set. I have checked tubes and they all seem to check good and tube voltages are there.
:::::
:::::I can't seem to pull up the schematic easily at home tonite or I could tell.
:::::
:::::Thanks
:::::Lou
:::::
::::::Can't get any stations but one or two on the high end and then they aren't any too loud. Have changed filters and checked resistors and changed several that were off but remains the same.
::
::Hi Lou,
::Well after rebuilding the capacitor blocks I get stations across the dial but they are all somewhat weak in volume. The diagram shows 50 volts on the grids of the 71a's and I only have -8 there so think that's why the weak volume. Don't see where they are getting the 50 volts.

do you have plate voltage on both 71a's?
may have 1 winding open on output trans.
with radio playing pull each 71a one at a time,there should be a volume change on each tube,no change-there's your problem.
i assume both tubes are good?

:My fault, was going from grid to ground. Have 50 from pin 1 to 3. Still can't figure why volume is so low.
:
:
::hi,iirc grid voltage is measured from filament to grid,not chassis to grid.
::which way are you measuring it?
::
:::::OK
::::
::::Are all the capacitors (variable) tracking each other?
::::
::::If the caps are mis-aligned relative to each other the tuning will be weak or non-existent.
::::
::::To tell, you have to tune to a station, loosen one cap on its shaft, and move it around to see if the gain gets better.
::::
::::Ciao
::::Lucio
::::
:::::Is this a TRF set or a regen?
::::::
::::::If it is a regen, then the local oscillator being generated may not be there . Check the frequency of the stations you receive and see if they correlate with the capacitor settings.
::::::
::::::If it is a TRF, check for weak tubes or tube voltages.
:::::
:::::Hi Lou,
:::::
:::::Thanks for your reply. It is a TRF set. I have checked tubes and they all seem to check good and tube voltages are there.
::::::
::::::I can't seem to pull up the schematic easily at home tonite or I could tell.
::::::
::::::Thanks
::::::Lou
::::::
:::::::Can't get any stations but one or two on the high end and then they aren't any too loud. Have changed filters and checked resistors and changed several that were off but remains the same.
:::
:::Hi Lou,
:::Well after rebuilding the capacitor blocks I get stations across the dial but they are all somewhat weak in volume. The diagram shows 50 volts on the grids of the 71a's and I only have -8 there so think that's why the weak volume. Don't see where they are getting the 50 volts.

Radio runs now with all kinds of volume. I noticed over 200 volts on the plate of the first 24 but only 100 on the plate of the second 24 and so wondered why so big a difference. Got to ohm metering around and the rf transformer winding feeding this plate measured open. Took it out and still seemed open although no visual break or problem. I put some double back scotch tape over the old winding and wound about the same # of turns onto the tape, reinstalled and have all kinds of volume. I don't know how the radio could have run at all with that coil open. It had low volume across the band. Worked fine but just weak volume.

:do you have plate voltage on both 71a's?
:may have 1 winding open on output trans.
:with radio playing pull each 71a one at a time,there should be a volume change on each tube,no change-there's your problem.
:i assume both tubes are good?
:
::My fault, was going from grid to ground. Have 50 from pin 1 to 3. Still can't figure why volume is so low.
::
::
:::hi,iirc grid voltage is measured from filament to grid,not chassis to grid.
:::which way are you measuring it?
:::
::::::OK
:::::
:::::Are all the capacitors (variable) tracking each other?
:::::
:::::If the caps are mis-aligned relative to each other the tuning will be weak or non-existent.
:::::
:::::To tell, you have to tune to a station, loosen one cap on its shaft, and move it around to see if the gain gets better.
:::::
:::::Ciao
:::::Lucio
:::::
::::::Is this a TRF set or a regen?
:::::::
:::::::If it is a regen, then the local oscillator being generated may not be there . Check the frequency of the stations you receive and see if they correlate with the capacitor settings.
:::::::
:::::::If it is a TRF, check for weak tubes or tube voltages.
::::::
::::::Hi Lou,
::::::
::::::Thanks for your reply. It is a TRF set. I have checked tubes and they all seem to check good and tube voltages are there.
:::::::
:::::::I can't seem to pull up the schematic easily at home tonite or I could tell.
:::::::
:::::::Thanks
:::::::Lou
:::::::
::::::::Can't get any stations but one or two on the high end and then they aren't any too loud. Have changed filters and checked resistors and changed several that were off but remains the same.
::::
::::Hi Lou,
::::Well after rebuilding the capacitor blocks I get stations across the dial but they are all somewhat weak in volume. The diagram shows 50 volts on the grids of the 71a's and I only have -8 there so think that's why the weak volume. Don't see where they are getting the 50 volts.

Well after rebuilding the capacitor blocks I get stations across the dial but they are all somewhat weak in volume. The diagram shows 50 volts on the grids of the 71a's and I only have -8 there so think that's why the weak volume. Don't see where they are getting the 50 volts.

************************************************
Capacitive coupling between windings in the IFT.

CS