National SW-3 Lives!

The wonderful 1930’s era National SW-3 was one of the first commercial receivers marketed to the Radio Amateurs. There were three main models – an all DC, all AC and a hybrid of the two. The National SW-3 started advertising in 1931 – and was NEW! in the November QST What is interesting is that up until the late 20’s, hams built their own…

The NorCal 40A, CW and Antique Radio

The “QRP-CW” section of the KY6R Shack . . . After having a full power QRO “DXCC Station” for many years, I’ve right-sized the shack based on wanting to pursue new interests. I have these areas of interest: Morse Code (CW) – like losing weight, this year I had pledged to get back into CW where I can improve my operating skill beyond the…

The 1930’s and Amateur Radio

1930’s QST Magazine by the American Radio Relay League I recently heard about the National SW-3 Regenerative Receiver, and became “smitten” with it. Mainly because it was one of the first commercially produced amateur radio receivers, and because it was one of the last regenerative sets before heterodyne receivers took over. With 3 tubes, 2 coils and just a handful of parts its also…