1. i got a pair of KO FM 40 band. The Tx one read 40915, the Rx one read sth like 40650...they dun match...is it normal or what?! i tried them at home, they worked..but i am worrying that i may be jammed by someone actually using a 40650 Tx crystal...
2. I found out that using 45875 on Tx and affect a receiver using 40650 crystal...... and vice versa..... again..is it normal?
3. Give me some hints about crystal maintenance? what will make them dun work/broke?
assistance is kindly appreciated