That $150 O-scope I bought on eBay last month worked great for tracing a faulty encoder, but I've heard the cheap ones lose calibration fast - anyone else gamble on used test gear and regret it or get lucky?

I grabbed a Rigol DS1054Z secondhand for $250 and it's been spot-on for troubleshooting a nav antenna issue, but a buddy spent $200 on a no-name unit that drifted after two weeks - which side do you fall on for used vs. new avionics tools?

3 comments

3 Comments

mark_chen622h ago

Got lucky with a used Siglent SDS1102X off a forum buy/sell for $180 and it's been solid for tracking down bad antenna relays and decoding arinc 429. Stick with the better Chinese brands like Rigol or Siglent and you're usually fine, the no-name stuff is where you get burned.

the_viola3h ago

Messed around with a cheap O-scope from an auction once, thing was a doorstop after a month... the readings just went all over the place. Ended up finding a Tektronix TDS 210 at a surplus sale for fifty bucks, and it's still chugging along fine for basic radio work. Guess the gamble pays off if you know what brand to look for, but those no-name clones are a total crapshoot. Always check the seller's rep on the forums, too, helped me dodge a few lemons.

taylor_patel56m ago

Alright, you guys are making it sound like life or death with these scopes. It's a $150 piece of test gear, not a heart monitor. If it craps out after a month, you're out what, a nice dinner? Just get another one. Some of these no-name clones are literally the same guts as the name brand ones anyway, just in a different colored plastic case. I swear people treat electronics like they're a marriage, just toss it and move on.