Radio listening, forty years ago

Forty years ago, I started keeping track of the shortwave radio stations I heard by writing information on 3x5" (7.5x12.5cm) cards and filing them by country. Some of my earliest notations were in late March 1978. This card was started a couple of weeks later, in early April that year. By the mid- or late 1980s I was so deeply involved in getting my M.A., I stopped keeping good records and, for several years, I hardly listened to shortwave radio at all. When I got back at it, in the 1990s, I had a computer, but never found a way to track what I was listening to as good as the old cards.

By the way, 1978 was before I got my first digital radio (which was an ICF6700W in 1979), and I used a particular method to remember where a station was. If you look closely you'll see "luw/" written here -- that stood for "lined up with" and it was always followed by some number on one of the bands of my "World Band Radio" plus an arrow indicating where on that number the tuning indicator was. Very
precise. :)

I am tempted to start doing this again. And I'd know pretty exact digital frequencies now.

By the way, "Numbers Stations" were -- still are! -- a way that countries' spy agencies keep in contact with their agents.