Hello M0FMT,

Wednesday, April 5, 2017

Did you not find the Transorbs added capacitance upset things? I found
the  drain  waveform was considerably deteriorated when I experimented
with Transorbs to limit spikes.

> Hi all



> The Decca PA seems to be scattered with spike limiting diode from
> memory Transils / Transorb TVS diodes. (don't know the values) I
> usually put one in the drain set above the peak drain wave voltage
> seen on the scope and below the peak operating value of the FET  So far so 
> good in single ended amps.



> Jim M0MBU did a short treatise see
> http://www.wireless.org.uk/guard.htm. 



> The Decca TX "guard circuit" by Jim Moritz, M0BMU.



> 73 petefmt

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