My suggestion is get an inline frq counter. there are a few out there in the 40 -50 dollar range that will do nicely. However the cheap ones only show either the TX frq or the RX frq, you would have to get models to check that it is tracking right. but either one will let you know where you're at. I have a dosy FC-50 not sure where I got it but was about 40 bucks.just screw a jumper from the radio to the in side and the ant, watt, swr meter ect. to the side that says out. actualy a great investment. ranger makes/ sells one called the FC347 that plugs in a jack on the back of export ranger type radios. I belive they are also under $60. They read RX and TX frq but would have to hard wired into your radio. I don't have the wireing info but may can find for you. What flavor cobra did you get?