On 14 Jun 2010 at 16:09, w4thq at cox.net wrote: > Where can a manual for the ZB-3 be found? Robert Downs, WA5CAB, probably has something that will do. I have had absolutely excellent service from him in the past. Also, that 3.105 MHz transmit frequency was a very common airport receiving frequency for many years. Ken Gordon W7EKB