Adding a VFO to a Cobra 142

[Shadetree Mechanic]

I came across this when googling CB VFO. I wonder what other cbs this can be done to?


http://cbradioclub.com/mods-a-tune-ups/208-add-a-vfo-to-the-cobra-142.html

 

[nomadradio]

Pretty much any CB with a PLL. The VCO in most such radios will prove to be a drifty VFO. Stability is not a big issue when the PLL circuit is 'tweaking' the tuning voltage ten thousand times a second, locking it to your 10.24 MHz crystal.

But using the radio's Voltage-Controlled Oscillator as an open-loop VFO will reveal that it's not terribly stable.

Cute idea, though.

73