I picked up a mint condition Lafayette Radio 6/2 meter VFO, with output between 8.000 and about 8.500 mHz. ( Fed through frequency multiplier stages to get to 50 or 144 MHz ) Stability is pretty good considering it is 50 years or so old.
I then added some turns to the l/c circuit/tank circuit and brought the output frequency down to 7 mHz. I hooked the output of the VFO ( high impedance ) into my new toy, a factory built/calibrated Oak Hills Research WM-2 ( 50 Ohms ) which indicated an output of .5 milliWatt. Is this along the same output levels as a Heath-Kit VF-1? Sounds kinda low. Then, there is the impedance mis-match. Also, haven't tried it hooked to my Heath-Kit DX-20 yet.
I am thinking about hooking it backwards into the wire antenna output terminal ( high impedance ) of a MFJ antenna tuner and hooking the " input " coax connector to the antenna which is a dipole and trying it as a QRPp transmitter.
" Inquiring minds want to know! "
Sam Neal N5AF