Well, you could call the oscillator I am using a BFO or a VFO ( Actually both ). Depends on how you look at it. I have used this circuit and actual build for many years without any problems. Not really state of today's art and it sure is not stable compared to a lot of other circuits out there but it works with just a hand full of parts and never quits.

Here is the circuit followed by the web page link.

https://www.qsl.net/kc6wdk/QRP/vfo.htm

I have made a couple of changes to this circuit. First I replaced the upper left 2N3053 with a 22PF NPO cap. I also replaced the lower left 2N3053 with 2 IN914 switching diodes in parallel. I also made this circuit with just a single band in mind so did not need the switch S1a/b