The diy freq meter is a counter kit from electronics-diy.com measures freq fron 10 to 60 MHz. it can measure weak signals from crystal oscillators. sorry about the DYI. AT 84 my fingers are a little tired Thanks for the come back, keeps me on my toes.
Ah right, I did actually think DYI was a model, I wasn't playing grammar police.
I cant help you on this one as i only know how to connect up a 3900 type counter [CRT superstar kf v1] for the 148, Theres plenty of instuctions around for this maybe it could give some clues, You never know.
The only way to read the TX and RX freq on a radio is to hook into the offset oscillator, however, this will not give you the on channel frequency, as it would need to be mixed with another frequency (to match the radios IF), for instance if you hooked into the 148, you would be seeing a 34MHz frequency, if you then had a mixer circuit installed too then that could deduct the 7.8MHz IF from that to give the correct on channel frequency.