airtronics rd8000 problems

[1985 kenworth]

The receiver is an airtronics Dual Conversion Narrow Band Receiver on a 72 band which is what the radio is. It looks like the original one that came with the radio.i bought the truck used from rod (stepside) and i was texting him on the weekend and even he was stumped why it is not working. I do not have the actual manual for it. I downloaded and printed a copy of it off of the internet somewhere. In the manual i printed it says how to bind but it says i need a bind plug. Since i bought it used i do not have a bind plug fir it but i have a bind plug from a spektrum radio which is why i asked can you use ant plug.