The old Cybernet board, for example a Lafayette HB640, has a great deal more filtering than a Uniden 510. A Uniden 510 has very little noise filtering capability. The adjacent channel rejection of the Lafayette HB640 worked well versus the local who found it necessary to talk on three channels at once. One thing with some of those boards is they came with a factory dead key that was supposed to be 3.5 watts and not 4 watts. If you try to max the output, it will sound distorted. I had just been having them set to 3.5 deadkey. They swing to 15, or 16, sound great with a good mic and good antenna. Better idea than a 510 if you have the room.