02-10-2014, 12:17 PM
Warren, look on the back of the chassis. The AM antenna strip has 3 terminals on it, probably screw terminals. Two of them are connected to the AM antenna, or used to be. I don't know whether the screw terminals are numbered or not, but there might be tiny numbers beside the screws. The screw that does not have an antenna wire connected to it is #3. It is the one you want to connect your VTVM to.
The FM strip looks on the schematic like it has 4 terminals, either screw terminals or plug-in sockets, or both. It connects to the FM antenna. That is not the one you want to use for your VTVM.
You probably can't connect the meter directly to the speaker because the speaker plug won't let you get to the wires easily, but if the chassis is out of the cabinet you can connect the meter to the point where the output transformer connects to the speaker wire (the ungrounded one.) It should be on a terminal strip near the output transformer.
The FM strip looks on the schematic like it has 4 terminals, either screw terminals or plug-in sockets, or both. It connects to the FM antenna. That is not the one you want to use for your VTVM.
You probably can't connect the meter directly to the speaker because the speaker plug won't let you get to the wires easily, but if the chassis is out of the cabinet you can connect the meter to the point where the output transformer connects to the speaker wire (the ungrounded one.) It should be on a terminal strip near the output transformer.
John Honeycutt
