Re: dc power connection bitx40 confusion
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While reading this thread, I am sure that many builders have wired their BITX-40's for dual voltages.? If you have, I would like to see a posting here on just how you accomplished it.? This would save me a little work on trying to figure it out, hi hi.? I am thinking of dual position switch, (I would mount it on the rear of the chassis) that would have the entire radio to operate on 12vdc, with the second position, putting 24vdc on PA only.? Please, your schematic here.? 73, de KO8S, Karl
On Sunday, October 1, 2017 3:23 PM, Keith VE7GDH <ve7gdh@...> wrote:
Paul (call sign?) wrote...
> confused on the e DC power connection instructions...
that Jerry pointed out pretty much says it all.
Keep in mind that there are two places on the main
circuit board that need to get power. The Raduino
also needs power. The power connection at the back
right of the main board (if you have the PA at the
back) is power to everything else on the main board.
The power connection over near the IRF510 PA is for
the final and nothing else. This is so you can
optionally run the PA at a higher voltage... with a
larger heat sink. If you are going to run everything
on 12V, just connect the three places together
wherever you switch the power on and off and of
course tie all of the grounds together too, avoiding
ground loops.
--
73 Keith VE7GDH
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