Also know that the new RK56 mics are made by a cheap Chinese company. They certainly aren't like the Telex Turner ones!! Less components being used as well as cheaper ones! If you search the forum you'll see the stories about the new vs. old mics. The new ones from what others have said don't have the audio quality of the old ones. And the quality overall was just not even close!!
The mic I listed is a good one for a stock mic. Also looking around I came across this one that seems to be a decent one. The uniden BC645. Here is some info on them. Might have to buy one to try it out myself for the money they can't be that much of a loss if they don't work worth a hoot!! Anyhow, hope you get that RK56 mic working. Juat wanted to give some other options if that mic doesn't work out! Have a good one! And good luck getting that mic working.
The mic I listed is a good one for a stock mic. Also looking around I came across this one that seems to be a decent one. The uniden BC645. Here is some info on them. Might have to buy one to try it out myself for the money they can't be that much of a loss if they don't work worth a hoot!! Anyhow, hope you get that RK56 mic working. Juat wanted to give some other options if that mic doesn't work out! Have a good one! And good luck getting that mic working.