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Michael Black[_2_] · January 18th 10, 07:59 PM posted to rec.radio.amateur.boatanchors

On Mon, 18 Jan 2010, wrote:

I am sure I have seen the 73 magazine issue, but that was back in
1975! Memory is not able to access a picture of the front cover.

It was the last small issue, the second part was in the first larger
size issue. It was a combined issue so they could get the larger
format out before the competition, all the magazines switched over
at the same time. The scope was on the cover, it kind of looked like a
Tektronix 453? (it's wider than it is high), and if I recall properly, it
had a built in battery so you could run it away from the power line. It
was an impressive project, yet it was also limited, no really high
frequency response.

John W. Campbell's solution about 15 years before in "CQ" was to do away
with amplifiers and run the scope tube off a relatively low voltage, which
gave them better sensitivity. Feed the signal right into the plates,
you'd get a dim trace but great frequency response. He got the idea from
Bell Labs.

Michael VE2BVW