K.P.S. Kang's Minimalist VXOs (and one for the BITX)

K.P.S. Kang provides us with some great ideas for simple VXOs.  He includes an intriguing reference for a 5 MHz circuit useable in a BITX.  Tell us more OM! 

http://smallwonderqrp.blogspot.com/2017/07/vxos-simple-minimalists-signal-sources.html