Dear All,

OK, my next project is:
http://www.nostalgiaair.org/Resources/935/M0011935.htm
a Montgomery-Ward console.

I receive stations very, very weakly in the low range (700K and below). I can get some stations in the higher frequency range, but not very loud.

Here is where I need some education: on the three section tuning condensor, I get infinity from rotor to stationary plates on the ANT and OSC sections, but I get a 2.5Meg reading on the INT section. This doesn't seem right to me. I thought that all sections of a tuning condensor were isolated from each other, issolated from the stator to the plates in all sections and isolated from the chassis.

Help and guidance, please?

Thank you in advance for all of your assistance.
Terry F

Sounds like you are measuring resistance of some circuit in parallel with this section of the tuner. You may have to disconnect it to get a true resistance reading.

I don't think 2.5M is very low.
Doug

All,

OK. I can disconnect the tuner and check it, but I thought that tuners were only variable capacitance.

Terry F

Yes but a variable capacitor is usually used in parallel with another element like a coil or whatever.. to form a tunable "tank-circuit" for instance.

So unless you disconnect it from the parallel item you'll be reading the resistance of that other item... get it?