Oscilloscopes - what specs to look for?

eyrepm

Just get this 100MHz dual trace Tektronix, it’s calibrated with probes, and it’s got a digital "frequency counter", and "volt meter" in it as well, you can download the instruction book on line. I had one for years, very reliable, wish I still had it, as I really don’t like the new digital Chinese produced crap.
The seller has 100% good feedback.
All you need is then is a audio frequency generator and you’ve got the works for a cheap test bench. That you won’t have to update.
https://www.ebay.com/itm/Tektronix-2236-100MHz-Oscilloscope-w-counter-timer-DMM-Calibrated-Two-Probes/153883356962?epid=2253449959&hash=item23d429af22:g:754AAOSwpnpeg4MD#viTabs_0

Cheers George

Here’s a link to a Tektronix CFG250 audio frequency generator, a great little unit I also used to have.
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR1.TRC0.A0.H0.XTektronix+CFG250.TRS0&_nkw=Tektronix+CFG250&_sacat=0
  
For $400 you've got the lot then DMM, Frequency Counter, 100MHz dual trace scope and a frequency generator.  
All quality Tektronix gear.
 
Cheers George

Actually the same guy with the Tek scope also has a couple of good frequency generators, including a Tek CFG250, the B&K one in nice.
https://www.ebay.com/sch/m.html?_odkw=&epid=2253449959&_ssn=shorewa8&hash=item23d429af22%3Ag%3A754AAOSwpnpeg4MD&item=153883356962&_osacat=0&_from=R40&_trksid=p2046732.m570.l1313.TR12.TRC2.A0.H0.TRS0&_nkw=Generator&_sacat=0

Cheers George

eyrepm

Don’t listen to those saying 20MHz is overkill.
You want at least 20MHz or higher, so oscillations can be found viewed and rectified, dual trace so you can compare channels, and a decent brand with good quality probes.
Other wise you’ll be looking for another one soon after you’ve learnt how to use it.
And get a good audio frequency generator as well, they are a must and go hand in hand.
Then once you reach Nelson Pass status, a distortion analyzer will be on the cards.

Cheers George