Hi all,
As I stated before, I bought a BitX40 at a hamfest a number of months ago, built by an unknown ham. I had to figure out what all the controls are and how they worked since none were labeled at all.
On the front of the radio is a toggle switch which seems to do nothing at all. Opening up the radio, I find that it is attached via three wires to a smaller PC board located under the main pc board. The board has a LM324AN op amp chip, 5 trim pots, and a bright blue LED which lights up when I power up the radio. It stays on no matter which position the switch is in.
I've attached a photo of the board and wonder if anyone recognizes it. the toggle switch is connected to the 3 wire connector plug in the foreground, and the other connections go elsewhere but I haven't yet traced them down. I'm just really curious as to what this board is or does, since as I've said flipping the toggle switch doesn't seem to do anything. However, it must have been important enough for the original builder to put the switch on the front panel.
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Tom Sevart N2UHC
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