For those who change out transmitter crystals, just remember that if you are involved with an incedent necessitating insurance coverage, if the AMA knows you changed transmitter crystal, you will not be covered with insurance. That is why it is highly recommended that you do not change transmitter crystals in the USA. Other countries don't have the same problems we have here as they do not have all the other users sandwiched in between the frequencys in use like we do here. There is a rare chance that you could be the cause of a fatality by causing unintentional off frequency operation.