by MichaelJ2K » Sun Sep 18, 2005 7:22 am
Transmitters MUST be tuned by a licensed FCC Technician holding at least a 2 class commercial license. The receiver is tuned to the transmitter. As a user, you may tune the receiver provided that you have the knowledge and skills to do so. As a user, you are prohibited from removing and replacing crystals in the transmitter. However, most of the radios we use have plug in rf modules on the transmitter which are legal to change. So, if you are blindly removing and replacing crystals and not tuning the receiver to the module, you will have problems. My suggestion is rather than change crystals in the reciever, have an extra transmitter module with a matched receiver ready to go.