I have several power antennas I would like to sell but I would like to test them first. I cannot locate any testing procedures for these, so maybe someone here can help.

One is from a 123 car, one is from a 190E and one is from a 126 car. All look to have the same type of plug.

I hate to put these up for sale if they no longer work. Anybody have the information I need to test these?

Sam