For sale is one Radio Shack Pro-433 base/mobile scanner.  Physically, the scanner is 100%.  Mechanically, there is something wrong with it.  It will scan for about 1 minute, then stop and just sit on one channel and not emit any sound.  I have tried to troubleshoot it, but it is obviously above my head.  Therefore, scanne is sold AS IS.  PM me with any questions.