Re: From 2014: Tektronix Announces Winner of Europe’s Oldest Working Oscilloscope Contest
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Dave Wise
I'm guilty too!
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Do you think the 513 was the military contract (1949-1950) that TekWiki says led to the 517, model not identified in the 517 article? And note that the non-suffix 513 was distributed; once again, "D" signified Delay Line. Dave Those rows of tubes marching off to the horizon are amazing.
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From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Chuck Harris Sent: Monday, September 16, 2019 12:06 PM To: TekScopes@groups.io Subject: Re: [TekScopes] From 2014: Tektronix Announces Winner of Europe’s Oldest Working Oscilloscope Contest I plea guilty to my brain spontaneously emitting gas about the "D" being for Distributed. It was, of course, an indication of the delay line, that allowed you to see the triggering signal. The 513D, however, announced back in 1949 had a distributed vertical amplifier containing a host of 6CB6's. That was at least two years before the 517 showed up in the catalogs. -Chuck Harris Dave Wise wrote: That D suffix indicates Delay line, not Distributed amplifier. (So you could view the edge that triggered the sweep.) Tek's first distributed-amp scope was Type 517.
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