The Tek web site has a lot of newer material available but it's hard to find application notes from the classic era - which I define as roughly up to the marketing alliance with R&S and Advantest.
Up to that point, Tek made some of the most awesome spectrum analyzers available - it was sad to see the product line discontinued.
I remember a discussion about application notes on this list many years ago. At that time Stan Griffiths said he was still trying to secure permission from Tektronix to publish them.
I never saw a followup but I do see a few application notes on TekWiki so perhaps it would be OK now to create a collection of these before they are lost to time.
What I think would be great would be an itemized list by product lines: 5000, 7000, 11000, spectrum analyzers etc.
