[Collins] 51J series input coil antenna requirements.

[Bill]

I couldn't find the antenna impedance for the 51j-2 in the manual but 
one of the RF tuning sections said to feed the sig gen through a 270
(250?)
ohm resistor to one leg of the input and ground the other input.

Of course I did see what the output impedance of the sig gen was.

Since the 51j-2 is transformer coupled, there is no antenna trim cap.