From post?
/g/BITX20/message/27483> ?The schematic agrees with how the board is built, so the schematic should remain as it is.
> ?But I agree with K7IOW, looks like an error to me, and that the intent was to wire up K1 same as K2.
> ?Could fix this by cutting the trace from C130 to the nearby ground feedthrough, then wire that end of C130 to the nearest end of C130A1.
That last line should be all you really need to know.
Looking at the schematics, the end result is that the bottom of C130 and D7 have been cut away from ground,
and are now connected to pin 9 of K1.
I'm convinced that is the way it should be.
On the other hand, I have not heard anyone describing trouble that I could attribute to the the lack of a diode across the K1 coil.
So I am not recommending that everybody take a knife to their Bitx40 to do this mod.
Jerry, KE7ER
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On Sun, Jun 11, 2017 at 04:31 pm, ohwenzelph wrote:
So... for the rest of us, can we (please tell it to me like I'm 5, with specifics) remove D7 and reapply it someplace where "D7 would give the reverse EMF of the K1 coil someplace to go when the PTT switch opens up."? [I have looked at the schematic and I don't understand enough to know what to do, & should you move a cap as well?]
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