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| Opinion on Tektronix 2246 vs 2445 |
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| wmundstock:
Hi. I own a Tek 2246 100Mhz 4 channel scope and found a good Tek 2445 150Mhz 4 Channel in good condition with reasonable price in my region. Honestly I always wanted a 2465B but those are rare and very expensive here and it has that "battery" concern. Can you share your opinion on the 2246 and 2445? Would it make any sense to "upgrade" to the 2245? Which scope do you prefer and why? Any pros and cons that I should consider? Thank you! |
| Sarvesaa:
If thats cheap and you can afford it then go for it. |
| bdunham7:
I have one and it is a very nice scope, but I'm not sure how much of an upgrade it is from a 2246 as they seem to be at a very similar feature level. The 2445 has a bit more bandwidth but it also has a less-focused or wider-trace screen because it uses the same mesh-expansion CRT as the faster 2465/A/B. I believe the 2445 also has a few features that the 2246 doesn't, like dual B-sweeps, but nothing major. All in all, it is probably an incremental upgrade. |
| jwet:
The 22xx series was designed to be a lower cost alternatives to the 24xx series which were pro scopes. The models overlapped a bit but 2200 were much cheaper -50% and as bhunham7 said, had better screens and focus. I had a 2225, the low, low end of the series it was sort of the Rigol of its day- early 90's at about a grand. The comps were Hitachi and old used machines from the 450/460 series which were still 2k. I later upgraded to a kind of a worn out 2465 because "I always wanted one". It was nice but I never pushed that 300 MHz BW. I still have it somewhere. They don't fetch much in the US and non working they're free for pickup. I think I'd stay with your 2246. Its about 5-10 years newer most likely and its the devil that you know. Tek is pretty conservative on BW, so the difference there is dubious. We're talking about 30-40 year old stuff here. Theee were the last of the all analog scopes- from here, they did 2430's, etc that were 100MS/s digitals with CRT displays and the monochrome LCD lunchbox 200 series that began the move to modern scopes. About 15 years ago, I got a 3054 series for a steal that will likely be my last expensive scope. I have a vacation house where I wanted a minimal lab and picked up a Rigol 1054, that is a lot of scope for 400! This sounds like Test Equipment Anonymous- short answer- stand pat unless you're a collector. |
| wmundstock:
--- Quote from: jwet on April 20, 2023, 01:57:59 pm ---The 22xx series was designed to be a lower cost alternatives to the 24xx series which were pro scopes. The models overlapped a bit but 2200 were much cheaper -50% and as bhunham7 said, had better screens and focus. I had a 2225, the low, low end of the series it was sort of the Rigol of its day- early 90's at about a grand. The comps were Hitachi and old used machines from the 450/460 series which were still 2k. I later upgraded to a kind of a worn out 2465 because "I always wanted one". It was nice but I never pushed that 300 MHz BW. I still have it somewhere. They don't fetch much in the US and non working they're free for pickup. I think I'd stay with your 2246. Its about 5-10 years newer most likely and its the devil that you know. Tek is pretty conservative on BW, so the difference there is dubious. We're talking about 30-40 year old stuff here. Theee were the last of the all analog scopes- from here, they did 2430's, etc that were 100MS/s digitals with CRT displays and the monochrome CRT lunchbox 200 series that began the move to modern scopes. About 15 years ago, I got a 3054 series for a steal that will likely be my last expensive scope. I have a vacation house where I wanted a minimal lab and picked up a Rigol 1054, that is a lot of scope for 400! This sounds like Test Equipment Anonymous- short answer- stand pat unless you're a collector. --- End quote --- Thanks for the review and for the advice. I do like the dual b-sweep feature on the 2445 mentioned by bdunham7. Problem is I also like the ground and trigger tracking features on the 2246 - not present on the 2445. Maybe I'll just wait until I find a 2465B which I can afford to show up. Here in Brazil they are rare and expensive - there are only a couple that I know of and they are listed for 1100 USD and up. |
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