Yes, a buffer is needed unless you desire the SBE effect.
For a circuit that is DESIGNED to wobulate somewhat, check out my VXO xtal controlled power oscillator PW rig . It would wobble much more if it didn't use a xtal. This rig was designed to be as simple as possible. 5W out, fully self contained. Still used today.
http://www.amwindow.org/tech/htm/series.htmGuy - is that Baby-T in your avatar? If so, I didn't know it had a digital readout. Neat looking rig, OM.
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