I burned the midnight oil last night to get the Frankenrig all put
together and working like it's supposed to. The Frankenrig is a 40m
transceiver put together from various projects, including an NS-40
transmitter, VRX-1 beta build receiver, Norcal keyer, and a T/R switch
copied from an MFJ QRP rig. It took a few days to get all the necessary
wiring connections together, but I finally did it and even managed to
hook up the pots and the paddle jack the right way the first time.
What I failed to do, though, was realize the Norcal board which someone
else had built did not have a 78L05 voltage regulator, but a wire
soldered across where it should have gone. Apparently someone had used
it with 3 AA batteries. So I ended up putting 12V through the chip,
which explains why in the brief time I first turned the rig on, I
smelled something getting warm. Once I realized what I did, I dug out a
78L05 and put it in place, installed a new keyer chip, and I was good to
I hope if I have time this weekend to make a few QSO's with it.
Tom Sevart N2UHC
St. Paul, KS
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