Just a WAG here, and not a technical one - why not power it up with 9v and use PuTTY and a dummy load to see how much power it generates. Seems like if it was wound for 9v you should get full 4-5 watts. If wound for 12v, much less output.
toggle quoted message
Show quoted text
On Mar 12, 2025, at 2:43?PM, CJ - WW0CJ via groups.io <cjtheham@...> wrote:
?
I have an old QDX I started building years ago (Rev 3) and I wound the PA transformer...and promptly forgot if I wound it for 12v or 9v.
?
I'm looking to work on finishing it now and reading the conventional winding docs is hurting my head, no idea how I managed to do it the first time. Is there an easy way to spot and tell if it's wired for 9v before I plug it up to a battery and fry it? Can I tell just off the number of turns on each side or do I have to do something else?
?
Apologies for the semi-simple question: brand new to kit builds and trying to get the old stuff I started and never finished on the air XD
?
73,
CJ WW0CJ
--
Jim / K7TXA
Eagle, ID
SKCC 10447T
BUG 301
