Do you know if these triple conversion UHF crystals are still available from any dealers?The PRO-10 covers VHF HIGH band (147-174 MHz) and UHF (~450 - ~470 MHz). While the VHF High Band is indeed 10.7 MHz IF, the UHF portion of this scanner is TRIPLE CONVERSION! It was the only scanner that used triple conversion for UHF when it came out (circa 1975). There were very few scanners that were triple conversion and used the same crystals. One such scanner is the PRO-16, the later 16 channel version.
During UHF reception there is a 54.7 MHz IF as well as the 10.7 MHz IF. BearCat crystals will NOT work (nor will PRO-5 crystals).
I answered this in a private message. I do have some of them, although I will have to check them to make sure they are on frequency and good.I could use the following triple conversion UHF crystals if anyone has them: 453.5, 453.95, 462.95, 462.975, 460.05
What band(s) does your scanner receive that you don't know the model number of? If UHF only it could be a PRO-5, if VHF only it could be a PRO-6. I have one of each.I have a PRO-52, PRO-27 and and old 4 channel crystal scanner (can any one tell me the model #)that I can't find the model number on.
PRO-27:I would love to ge my hands on a few crystals to see if they still work. The freqs I need are 158.385 or 154.100 or 419.2875.
I wonder if those are the frequencies of the crystals or the frequency they are designed to receive. If the frequency being received, they won't work in the PRO-27. But if that's the crystal frequency, that's another matter.While rummaging through these old radios I came up with a few old crystals they are 47.8100 (2 of these) and 47.8000 (2 of these)