http://www.trompeter.com/assets/prod...itary_Aero.pdf
You can get 50 ohm patchs bays too. The military uses them. Like I
said, if you buy them used, make sure you ohm out the connections.
There are so many variations that look like they are the same until you
plug them in.

Make sure you have a can of Caig DeOxit handy.