NO NO NO. Not grid driven. ?Cathode driven! Neither?Carl or myself did grid driven! ?It was cathode driven. ?Yes I know 20?watts drive sounds crazy but handling the bit of positive feedback with the gain at proper loading kept it stable. ?He said to find the right spot and leave it alone else you might find yourself in trouble. ?It could have been even better with solidly grounded grids rather than floated but hey.
On Wednesday, December 20, 2023, 11:11 PM, Steve <k0xp@...> wrote:
On 12/20/2023 6:18 PM, Louis Parascondola via groups.io wrote:
> ........... There¡¯s quite a bit of regeneration but the skill
> in?building them was to keep them from taking off when loaded for
> maximum output. ?Carl kept his recipe for getting SB200¡¯s to work on
> ?6 meters as much of a sectet as Mrs. Paul¡¯s cheesecake.
Yup; he was never real open about how he did some of the "successful"
schtuff he was able to accomplish.
> I¡¯ve probably converted?half as many as Carl did and 18-20 watts gave
> you?about as much output as you¡¯d dare.
So, Lou: are you saying that you believe Carl converted this "SB-206" to
full grid-driven instead of grounded grid?? If so, that certainly does
help explain why tuning seems so touchy; I wouldn't have believed that
if you hadn't mentioned it.
Tell us, Lou... did you modify yours to grid-driven, or were yours
grounded grid??
73,
Steve K0XP
