Author Topic: Oscilloscope score at local Ham Radio auction--Tektronix 7904 w/ 4 plugins--$15!  (Read 1795 times)

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Offline N2IXK

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Sold a bunch of junk at my local radio club auction last night, and ALMOST made it out the door without buying anything. But then this guy went on the block, described as "not working" with no takers at a starting bid of $20. I really didn't NEED a 4th oscilloscope in my already cramped home lab, but when the price got dropped down to $15, I figured it would be good for parts and scrap aluminum if nothing else, so it ended up following me home.

Turns out, all the thing needed was to pull and reseat the plugins, and it came to life. Even the calibration seems pretty good. :) This is a 500 MHz mainframe, which came with 2 7A26 dual trace vertical amps, and 7B85 and 7B80 timebases. As configured, it is a 4 channel, 200 MHz scope, with the capability to display 2 different timebases at the same time. With a spectrum analyzer plugin, you could have both a time domain and frequency domain display on the screen at the same time. Property tags indicate that it was surplussed out of CBS-TV central engineering lab.

Pretty dirty inside, but a brush and shop-vac should take care of that.  One busted knob, that I should have a replacement for somewhere. A shot of deoxit on a few dirty pots and switches, and I think I have a keeper. Certainly the most capable scope I have ever owned, and wretched overkill for most of the work I do at home.  Will probably sell off my Tek 7623 storage scope to make room for this beast....any takers?
« Last Edit: December 01, 2013, 03:01:58 am by N2IXK »
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Offline GreyWoolfe

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Lucky you!  I never find deals like that  |O.  The best deal I came up with was a MFJ-259 for $15.  Good luck with your new toy.

Tom, NW0LF
That which doesn't kill you still requires a co-pay.
 

Offline TheBorg

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Lucky you!  I never find deals like that  |O.
Welcome to my life :D
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Offline GreyWoolfe

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Actually, now that I think about it, I have gotten some decent deals.  At the Melbourne, FL hamfest this year, I did score a Fluke 1952A counter/timer in working condition for $10.  Also got a Tektronix 2235 in unknown condition but powered on for $40.  I just had to clean the horizontal and vertical amplifier controls and the scope works fine.  Still, nothing like N2IXK.  Maybe I'll have better luck at the Orlando hamfest next year. 
That which doesn't kill you still requires a co-pay.
 


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