BITX Build Update #19 Layout, VXO, Bal Mod, Filter, PA

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The files of the BITX20 Yahoo group were very useful to me during my BITX build.  So I have decided to make a contribution myself.  I uploaded a few drawings today.  Here is how I laid out the circuitry on my 8 inch by 11 inch copper clad board.  I included the isolation (Manhattan) pads for one of the bidirectional amps.   



Here is the VXO.   I built is on a separate board, but I could have put it on the main board. 



Here is the balanced modulator and crystal filter. 

 

Here is the power amplifier circuitry.  Amazingly easy to stabilize. 


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