[Elecraft] PR-6 issue when QRO

[Adrian]

Besides my earlier direct email to you Greg, changing the sb-220 120v FT
supply to a FWB rectifier and replace the C4 electrolytic with a 200uF to
320 uF works very well at speeding up the existing relay. The much larger
capacitor can be sourced from a good one from the HV capacitor bank when
replacing bad units.
The FT supply handles the much larger capacitance with no issue.

Circuit see right side :    http://www.somis.org/add-160m-d.jpg

I have 3 sb-220's here, One has a AG6K qsk kit fitted which works very well.
They all have FWB rectifier (relay)supplies and 450v/320uF electrolytic's
which fit snug between the deck base and lower side rail @ 35mm diameter.
Just silicone in place.

Adrian ... vk4tux

NB; FT = Filament transformer