KL7UW

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432-MHz 100W Power Amp

  I have a kit consisting of a pc board, two MRF-309, and several metal-mica capacitors that I 
  believe was originally marketed by Communications-Concepts, Inc.  It was accompanied by a 
  document, EB-67, authored by Harry Swanson & Bill Tekniepe; most likely originally a Motorola 
  application note for the MRF-309.

  I am going to build it and install two matched MRF-327 in place of the MRF-309.  Ingolf, SM6FHZ,
  Has sent me some pdf documents that he had when he built this amplifier in the 1980's:

PC board Photo
PC board  Layout
EB-67 Bias Modifications
EB-67 Bias Checking


  NR6CA shows the schematic on his website.

  Side Note:  This amplifier will mainly be for SSB/CW use for terrestrial contacts, but it 
  will be mounted on my 4.9m dish whenever 432-EME is desired (using a 432 dipole feed).  







  I will place photos and updates on the project as it proceeds.





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