In fact I notice, now I am starting to completely wake up this
morning, in my link if you remove all the tuning components and
buffers, short the 330pF cap, and replace the inductor with a crystal
it becomes a standard crystal oscillator circuit used with the 'HCU04.
Seems to me it should work with the 'HC86 but there is always the
possibility of spurious oscillations with such buffered gates.

Steve VE3SMA

PaoloC wrote in message ...
Hi,
thanks to all those who replied and discussed this topic, providing me
with a lot of good suggestions.