A 100Mhz would easily handle anything for those types of machines. I've never used a 2246, but I do have a 2445. It's the 150Mhz version of the 2465. I'd love to have a B in either it or a 2465. You *may* be able to find a 2445B at a better price. I haven't priced those in sometime. What I do know is that my 2445 that I paid $800 for about 5 years has sold as low as $400 on eBay in the last few months (where I buy a lot of my test equipment), and it had a semi-recent calibration on it. I don't know what your budget is, but you may also want to consider something like a Tektronix 3014B or similiar. These are color LCD scopes, 4 channels, all the Smart features, floppies, etc. The major advantage of them is they are more current. It's damn near impossible to find tubes and the vertical amplifiers (and no doubt many other parts) for the 24x5 series. They're old scopes, Tektronix doesn't calibrate them any more, and except for one place I've found who will do a complete swap out for something like $1200, they're very difficult to get repaired. Of course, the argument here on the list will be "Well, you can get schematics for the old scopes and fix them yourselves." Except when you can't get parts, which seem to be a lot of them (for instance, even something as simple as a cover for the scope is hard to come by). The newer LCD scopes are no doubt not-fixable yourself (the old "It's got ICs" argument). However, my take it's a more capable 'scope with a lot of useful features (DSOs are great for most types of work), and it's less likly to break before the 24x5 will. We've got two at work that have had the crap beat out of them on trips, and they work fine. They are also *much* lighter if you need to tote them anywhere. --jc Jay West wrote:

On Thu, 2005-07-21 at 22:21 -0500, Jay West wrote: "640KB will always be enough" :-) I suppose it's one of those cases where as soon as you get it you'll find a need for the things that it cant do... just a question of how often that's likely to happen. Not often in terms of classic stuff I'd expect. The cynic in me wants to say that you should worry about something faster in two years when the current purchase breaks due to bad build quality and marginal components ;-)