Hello to all on the drake list,
I just bought a TR-4 with a noise blanker installed, the manual that came with it says that the noise blanker is a 9NB, I thought the TR-4's used a 34NB???? The noise blanker in the TR-4 looks like the picture in the manual, it is hard wired in, not plugged in, would this be the same 9NB that goes in a TR-6? There is no ID on the board that I can see.
How can I tell if its an 9NB or a 34NB The serial # is 30736
Thanks,
John KG9JA
