When I heard that Dave Banson had announced his decision to close Small Wonder Labs, I decided to press my Rockmite 80m rig back into service. So I connected it up to my long wire antenna and turned it on.
What I heard was a local commercial station booming in real loud. And no amount of tuning would get rid of it. I even connected up my NesCaf filter to see if that would do the trick, but it didn’t.
I consulted the rig’s instruction sheet once more and sure enough, Dave had foreseen this problem and suggested a fix. All that was needed was to install a 1K resister into the two unused pads immediately below D1/D2 on the PCB.
That called for the PCB to be removed from it’s nice enclosure, an Altoids tin.
Once the resister had been soldered into place, it was just a matter of putting everything back together again.
So how did the rig now perform? Nicely, although the offending station is still slightly audible. But not enough to bother me. I must add that some nights I can’t hear it at all.
All I now need is a QSO. I call CW every evening in the hope of a contact but so far this has proved elusive. The 397mW output makes this a challenge, but this is what the fun of QRP is all about. It will come.