A Quantar high stability oscillator would allow a VHF repeater to go for a very long time without having to adjust back on frequency. The stock osc in a VHF Quantar is pretty good and should go maybe a couple of years without drifting far enough to worry about. I have a spare high stability osc here and a couple of VHF and several UHF Quantars and would not bother to use it on those. If you already own one it wont hurt to use it but I don't think its worth purchasing at the typical $200 to $250 prices I've seen recently.?
