I am in the process of refurbing a Heathkit HA-10
Warrior amp. I have looked at some of the old threads
dealing with this amp and have a couple of questions.
The 866's will go in favor of plug-in solid state
replacements. Am I going to end up with a lot of
extra B plus? The power supply is choke input to a 8
Mfd capacitor. Would a step-start circuit be of any
value or will the choke be enough to limit the surge?
Are the original parasitic chokes sufficient or should
I replace them with something different?
This amp has had two plate transformers fail for the
previous owner. He used the amp on RTTY. I got a new
transformer from Heyboer and asked them to build it
for CCS. The vast majority of my operation will be
SSB. I plan to scrap the fixed bias supply and go with
a zener in the center tap of the filament xfmr in
series with a high value resistor which will be
shorted with a relay in transmit. I will ground the
grids of the 811's directly to the chassis with heavy
braid or copper strap.
Any other suggestions?
Thanks
Allen Jones, W9DZ
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