Re: Oscilloscope Recommendation

Great idea about looking for a non-profit discount. That might not work for the Chinese 'scopes, but it could make the US 'scopes prices more competitive. On Sat, Apr 29, 2017 at 11:53 PM, Paul Anderson wrote: > I've almost always used TEK scopes, and liked them. What ever you choose, > see if

Re: Oscilloscope Recommendation

We have lots of dual-trace Hitachi 25MHz analog 'scopes that were donated by BMI. They are fine for the low speed work that typically do, and don't have some of the interesting problems that digital 'scopes have. We can get a deep discount on any of the 'scopes that BMI has: https://www.bmisurplus.

Bulk tape eraser

Looking for recommendations for a bulk tape eraser for SDLT and DLT IV tapes. Mike Loewen mloe...@cpumagic.scol.pa.us Old Technology http://q7.neurotica.com/Oldtech/

Re: Bulk tape eraser

I'd go to the Athana site, they have some degaussers and a nice write-up about what can (and can't) be safely degaussed 2017-04-30 11:38 GMT-03:00 Mike Loewen via cctalk : > >Looking for recommendations for a bulk tape eraser for SDLT and DLT IV > tapes. > > > Mike Loewen

Re: Bulk tape eraser

On 04/30/2017 07:38 AM, Mike Loewen via cctalk wrote: > > Looking for recommendations for a bulk tape eraser for SDLT and DLT > IV tapes. If it's just a small quantity to be erased, there are many Radio Shack videotape erasers being offered, some NIB, all for about $20. I've used one for years

Re: Bulk tape eraser

You may as well run them through a shredder. All modern tapes have embedded servo tracks. On 4/30/17 7:38 AM, Mike Loewen via cctalk wrote: > >Looking for recommendations for a bulk tape eraser for SDLT and DLT IV > tapes. > > > Mike Loewenmloe...@cpumagic.scol.pa.us > Old

Re: Bulk tape eraser

I'll add that using the little Radio Shack "high power" device well, is not a simple matter--the trick is to keep the eraser moving and using different angles and distances. If you want a high-power tape *degausser*, be prepared to part with some real cash--the low end seems to start just north o

Re: Bulk tape eraser

On 04/30/2017 08:55 AM, Al Kossow via cctalk wrote: > You may as well run them through a shredder. All modern tapes have > embedded servo tracks. Certainly not DLT IV tapes--I've done the bulk eraser thing with them and the result re-recorded just fine. But then, DLT IV is hardly modern. --Chuck

Something for the P3 you have in your back yard

http://www.ebay.com/itm/Vintage-Military-IBM-Computer-/201911842662 https://fas.org/man/dod-101/sys/ship/weaps/an-uys-1.htm

Re: Bulk tape eraser

On Apr 30, 2017, at 10:04 AM, Chuck Guzis via cctalk wrote: > > On 04/30/2017 08:55 AM, Al Kossow via cctalk wrote: >> You may as well run them through a shredder. All modern tapes have >> embedded servo tracks. > > Certainly not DLT IV tapes--I've done the bulk eraser thing with them > and the

Re: Bulk tape eraser

On 4/30/17 10:04 AM, Chuck Guzis via cctalk wrote: > Certainly not DLT IV tapes--I've done the bulk eraser thing with them > and the result re-recorded just fine. > Sorry, I flipped DLT and LTO in my mind..

mx-80 for free

I found an Epson MX-80 in my pile of junque. I'd rather not ship but Ottawa, Montreal or Toronto are all possible. Otherwise, out to recycle. -- - d...@freebsd.org d...@db.net http://www.db.net/~db

os8diskserver help?

Hi All, I'm in the process of building and restoring a PDP-8/e, and now I've got a second serial card I'd like to give OS/8 a try. I'm pretty sure I've got the boot loader entered properly, and the address + baud rates set correctly on the PDP and PC. When I start os8diskserver with "./os8disk -1

Re: Bulk tape eraser

>Chuck Guzis via cctalk wrote: On 04/30/2017 07:38 AM, Mike Loewen via cctalk wrote: Looking for recommendations for a bulk tape eraser for SDLT and DLT IV tapes. If it's just a small quantity to be erased, there are many Radio Shack videotape erasers being offered, some NIB, all for

Re: Bulk tape eraser

On 04/30/2017 06:22 PM, Jerome H. Fine via cctalk wrote: >> Chuck Guzis via cctalk wrote: > FORTUNATELY, I had an old voice coil fram a speaker available. It > must have been a large speaker because the coil was a cylinder about > 3" in diameter and about 3" long. The permanent magnet seems to h

Re: Bulk tape eraser

On 4/30/2017 6:22 PM, Jerome H. Fine via cctalk wrote: Looking for recommendations for a bulk tape eraser for SDLT and DLT IV tapes. Eons ago at Microdata we had a commercial grade bulk eraser which could do 2400' reels maybe a bit larger. I wondered by one day with a new fangled device,

IBM 4331 Mainframe

Just to let folks know that I finally moved the IBM 4331 Mainframe this past weekend from where it was currently stored to my shop. Pictures are here: https://www.flickr.com/gp/150223282@N04/NrX91K As can be seen in the pictures, it filled a 26’

Re: Something for the P3 you have in your back yard

On Sun, Apr 30, 2017 at 10:52 AM, Al Kossow via cctalk < cctalk@classiccmp.org> wrote: > > http://www.ebay.com/itm/Vintage-Military-IBM-Computer-/201911842662 > > https://fas.org/man/dod-101/sys/ship/weaps/an-uys-1.htm > > Does this come under the category of 'home defense'? -- Ian S. King, MSI

Re: Oscilloscope Recommendation

Hello, all fine with Rigol or similar oscilloscopes, but there's a very important technical specification that often is not considered, which really DOES the difference between a cheap oscilloscope and a powerful one: waveforms per second. Suppose you are searching for a rare glitch, or that you ar

Re: Oscilloscope Recommendation

+1 for the TDS540. On Sun, Apr 30, 2017 at 11:54 shad via cctech wrote: > Hello, > all fine with Rigol or similar oscilloscopes, but there's a very important > technical specification that often is not considered, which really DOES the > difference between a cheap oscilloscope and a powerfu