[Collins] Re: {Collins} 32V-1 Grid Drive during alignment
kwylow zinjanthropus
[email protected]
Mon, 27 Jan 2003 10:55:39 -0800 (PST)
Hi John:
What was the final verdict on the grid drive (current wise)? Let us know and thanks. Cal.
john <[email protected]> wrote:
I chased a low grid drive problem (started out at about 2mA, then went to
nearly 0, depending on band), and finally tracked it to one of the bypass
caps in the freq. mult chain. Naturally, it was one of the papers that were
in the back of the tube socket... I had to leave it in there and snip one
end off. I was
able to solder its replacement back in , as it was a much smaller poly unit.
Good luck!
73
John K5MO
At 07:50 PM 1/25/03 -0500, [email protected] wrote:
>
>
>Hi All-
>
>I am bringing up a 32V-1 which I have just cleaned up. I still have not
applied HV yet, and I'm trying to do a first cut alignemnt before I try to
drive the PA.
>
>I'm following the alignment procedure in the manual, which calls for
tuning for max PA grid current with no HV applied (HV primary fuse removed).
>
>My question is, what are normal numbers in this case? I'm only seeing
around 3 mA grid current max; would have expected much more...
>
>Thanks,
>Tony, K1KP
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