07-04-2015, 05:33 AM
Hi Dave & happy 4th!
Well there is a good reason why you don't get a buzz from the center tab on the volume control. It's not in the audio circuit but in the antenna circuit. It varies the volume by reducing the amount of RF that goes to the ant coil. If you want to hear a buzz go to pin3 of the 47 tube.
Most of the time you want the connect the - meter lead to the chassis and use the + lead to measure with. If you are using a VTVM or digital meter reading maybe a little higher.
Terry
Well there is a good reason why you don't get a buzz from the center tab on the volume control. It's not in the audio circuit but in the antenna circuit. It varies the volume by reducing the amount of RF that goes to the ant coil. If you want to hear a buzz go to pin3 of the 47 tube.
Most of the time you want the connect the - meter lead to the chassis and use the + lead to measure with. If you are using a VTVM or digital meter reading maybe a little higher.
Terry
