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[ATTACH=full]71175[/ATTACH]

142 Tripler Offset with Clarifier.  Notice C127 (220pf) from Emitter to Ground.


[ATTACH=full]71176[/ATTACH]

C2000 (148 et al) has a second varactor circuit in place of the 220pf above, added to the Emitter of the 11 MHz oscillator, this is what gives the 2000/148/Grant the extended slide range, compared to the 142/Washington.