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As an example of other things that can be done with the Toolkit modules, here is something that was part of an SK estate that I obtained last year.  It is an 80m CW/SSB receiver that uses some hombrewed parts in addition to Toolkits.

The antenna connector is in the right-rear, and there is a tunable BPF in the right front corner.  The VFO is a PTO device and tunes 6.0 - 6.5Mhz.  The SA612 mixer is in the right-center.  The signal then goes through a 10Mhz filter -> RF amp -> IF amp (interesting combo) -> TUF-1 Mixer (i.e., audio detector; left-rear).  The tunable BFO (front with 160pf tune cap) outputs ~9.7 - 10Mhz to the mixer.  From the mixer, the signal goes through a little preamp (middle-left) to the audio amp.

The BFO and VFO adjustments are very wide (i.e., not touchy) and the thing sounds great!

Anyway, I thought I'd share this in case it might give ideas to  others.

Greg
ki4mmm

Last edited by ki4mmm (2009-03-20 09:05:00)