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Test build on 'Circ-Key' - found a problem to report

wa2cky
 

Not sure if there is anyone, in particular, that I should sent this to but I did find a 'bug' in the pc board.  Not critical as it was easily fixed but none-the-less should be noted.

Problem: the battery negative terminal is NOT routed to the 'ground' layer on the board. The '-9V' only goes to the Key Output jack and not to any of the other 'ground' connections (e.g. the U1-8 and U2-7).

Fix was easy - a short piece of wire from the 9V battery negative connection to the mounting hole/ground layer about a 1/4" away. 

Now back to the testing.

Bob, WA2CKY

nm0s_qrp <ai9e_qrp@...>
 

What you discovered is a _feature_! The battery power is only connected when the cable is plugged in. That way you can power down the keyer without having to disconnect the battery.