On Sat, Jun 9, 2018 at 01:48 pm, Tim Gorman wrote:
As you predicted earlier, this is not optimum. While it increased myThere is the are problem but the power increase didn't track either
as an additional 12DB should have driven the finals to well over 20W....
From 2-4W is only 3db increase.
Why didn't it? First the pre-driver and driver have issues. and then
the mmic took off oscillating as the input and output are way too close.
The amplifier from Q90 though the irf510s have to be taken as a system.
Every part of the chain has to meet some reasonable specs or the whole
mess fails. This is why there is no simple fix.