hello, I was listening to my radio, its the universal I am working on. It was playing fine or almost ok when I lost almost all of the volume. You can get the volume back when you touch the grid cap of the 24a tube. This grid cap wire goes to the tunning condenser. The wire then goes to a coil in a can. The coil winding goes from the tuning condenser to ground. There is another winding on the outside of this coil(insulated by a piece of something?). This outer coil goes from antenna wire to ground. I'm not sure what this coil is for since I can touch the grid cap of the 24a or this same wire on the tuning condenser and get the volume back. I checked the continuity of these coils and one is 4.5 ohms, and the other one is 1.8 ohms. If these coils were bad wouldnt they be open? Is there a better way to check these coils?

Hi Sean

You did the right thing, checking the antenna coil windings. You should have an antenna connected on this radio. Does an antenna help? Are you touching the 1st RF stage when volume increases? If it's the second stage the other coil may be open?

Your coil readings are reasonable. Right, if a coil was bad it would be open.

Norm

:hello, I was listening to my radio, its the universal I am working on. It was playing fine or almost ok when I lost almost all of the volume. You can get the volume back when you touch the grid cap of the 24a tube. This grid cap wire goes to the tunning condenser. The wire then goes to a coil in a can. The coil winding goes from the tuning condenser to ground. There is another winding on the outside of this coil(insulated by a piece of something?). This outer coil goes from antenna wire to ground. I'm not sure what this coil is for since I can touch the grid cap of the 24a or this same wire on the tuning condenser and get the volume back. I checked the continuity of these coils and one is 4.5 ohms, and the other one is 1.8 ohms. If these coils were bad wouldnt they be open? Is there a better way to check these coils?

:Hello, I checked the ohms in the coil that the antenna wire goes to. The other coil set measures 4.5 ohms to ground, and 10.2 ohms...its not connected to ground
:
:Hi Sean
:
: You did the right thing, checking the antenna coil windings. You should have an antenna connected on her this radio. Does an antenna help? Are you touching the 1st RF stage when volume increases? If it's the second stage the other coil may be open?
:
: Your coil readings are reasonable. Right, if a coil was bad it would be open.
:
:Norm
:
::hello, I was listening to my radio, its the universal I am working on. It was playing fine or almost ok when I lost almost all of the volume. You can get the volume back when you touch the grid cap of the 24a tube. This grid cap wire goes to the tunning condenser. The wire then goes to a coil in a can. The coil winding goes from the tuning condenser to ground. There is another winding on the outside of this coil(insulated by a piece of something?). This outer coil goes from antenna wire to ground. I'm not sure what this coil is for since I can touch the grid cap of the 24a or this same wire on the tuning condenser and get the volume back. I checked the continuity of these coils and one is 4.5 ohms, and the other one is 1.8 ohms. If these coils were bad wouldnt they be open? Is there a better way to check these coils?

:An antenna helps when you attach it to the tuning condenser. When you do that it brings back volume. Otherwise volume is real soft/low at best
:
::Hello, I checked the ohms in the coil that the antenna wire goes to. The other coil set measures 4.5 ohms to ground, and 10.2 ohms...its not connected to ground
::
::Hi Sean
::
:: You did the right thing, checking the antenna coil windings. You should have an antenna connected on her this radio. Does an antenna help? Are you touching the 1st RF stage when volume increases? If it's the second stage the other coil may be open?
::
:: Your coil readings are reasonable. Right, if a coil was bad it would be open.
::
::Norm
::
:::hello, I was listening to my radio, its the universal I am working on. It was playing fine or almost ok when I lost almost all of the volume. You can get the volume back when you touch the grid cap of the 24a tube. This grid cap wire goes to the tunning condenser. The wire then goes to a coil in a can. The coil winding goes from the tuning condenser to ground. There is another winding on the outside of this coil(insulated by a piece of something?). This outer coil goes from antenna wire to ground. I'm not sure what this coil is for since I can touch the grid cap of the 24a or this same wire on the tuning condenser and get the volume back. I checked the continuity of these coils and one is 4.5 ohms, and the other one is 1.8 ohms. If these coils were bad wouldnt they be open? Is there a better way to check these coils?