Re: homebrew ubitx PA #bitx20help #bitx40help #bitx40 #ubitx-help #bitx20

ajparent1/kb1gmx
 

The general answer no one has.

The amp mentioned is a considerable improvement but it was designed
for a trx that provides the needed 25 milliwatts drive.   The predriver and
driver in the ubitx is still needed and they have issues as well.  That and
grafting it to the ubitx would be a challenge for the non RF experienced.

No one I know of has done a single board replacement amp that
can do 10W from the output of the low pass filter.   Its a difficult
design to get that much gain on one board without VHF layout
the level of ground plane needed for stability.

Allison

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