Having said all of that, if you're looking for a used analog scope it's always a good idea to only buy one that's showing wave forms from a function generator.
#Quickmenu oscilloscope image manual#
And all of the tech manual to maintain them can be found online for free. Translation: a guy with a soldering iron and small tools can still repair them! In fact, there are a number of shops around the country that specialize in repair and calibration of old Tektronix scopes. There are no proprietary chips or surface mounted components. The 465 is put together using common components that can still be found today with little trouble (the exception being the tunnel diodes). because everything today is manufactured using proprietary semi-conductors and surface mount technology, when a digital scope goes south you are left with a very expensive boat anchor because they can't be repaired. The new digital scopes are great and they do a ton of stuff the old analog models can't do BUT.
Which brings us to another important point. And Tektronix made a boat load of them so you can still find plenty of them in working order and some that aren't that are useful for parts. Which brings us to fact #2 - Model 465! This was the first truly portable scope and it was built to take the rigors of traveling techs. They still make really great digital scopes too but these old analog scopes were built to last! The 465 model has been around since the 1970's and you still see plenty of them in use today. Let's start with two important facts: 1: Tektronix - world renowned maker of oscilloscopes for decades.
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