CXO: Tune 5th Butler Overtone VHF Oscillator
64 Mhz 5rd Overtone
12.8 Mhz
tank： 7T on pencil (240 nH) (better than white TDK coil former )
22 p-> 14 p
43 p-> 30 P+ 24 pf trimmer ( even 100p )
16.8: 24pf trimmer
104->103
important:
15k ---> 33k
<22K leading to low frequency parasitic oscillation, even quench, and the crystal could not control the oscillation in such a situation.
5T on 6mm pencil
71.59Mhz Overtone
71.59Mhz Overtone
increase 24k to 33k and even bigger to eliminate the parasitic oscillator and get the crystal control the oscillator.