Thank for the quick response. It looks like even the PCB will be a hair too big. I'm just not a fan of the shallow boxes but I guess it must be done.
I still have to order the 4066 and the 1n34a.
Out of curiosity what purpose does the single germanium diode serve?
Give a man a match and he'll be warm for a day.
Set a man on fire and he'll be warm for the rest of his life.
It's just a clipping diode (hard clipping to ground) together with a 1N4148. I thought asymmetrical sounded just alittle bit meaner in this circuit, but the difference is subtle, so another 1N4148 will work fine insted of the 1N34A. :)
The signal is already pretty much clipped as much as possible by the schmitt trigger / zero crossing detector before that, but the diodes are needed to attenuate the signal to make headroom for the resonant filter.
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