test-drb April 2005

test-drb@ccmp.vtda.org

269 participants
730 discussions

by Saquinn624＠aol.com

I have a few things- any interest in the e-module housing for a Personal IRIS with GR1.5 graphics? also- an unracked HP (9000 series 800) G-50 server? pretty well loaded with RAM (over 500 MB), fits nicely under the desk- combination foot rest and warmer. Silicon Graphics Indigo2 IMPACT r4k/250 Solid SGI Indy R5k/150SC (Cache!!) (L@@k RARE only a few million made. . .) Computone ISA terminal board Wangtek ISA QIC-02 controller IBM P200 13w3 monitor with cable-works with Sun, SGI, RS/6k, PC, et al. If I could get a trade or some small offer to offset the $20 I invested in a failed attempt to get my PI running again (totally dead IP board, SMT FPU (mine wants a PGA :( sob, sob, etc.) the following is available, and working. IP28 board (R10k) for Indigo2 RE2 chip for GR1.x graphics (Personal IRIS) Indigo2 IMPACT 10k power supply (Dual Head) with Mardigras (Impact) backplane Personal IRIS skins and power supply Still looking for a Indigo R3k board or Personal IRIS IPx (X<=10)- or any board with a r3010 FPU at or above 20 MHz, board does not need to work., also a MC88k AViiON. With all of the talk about computer fairs in Calif, E.coast, does anyone know of any in WA? -Scott Quinn

20 years, 1 month

Russian comps, Toshiba drives

by Saquinn624＠aol.com

No one mentioned the BESM computer, not VAX or PDP. Someone's even trying to clone it- http://www.mailcom.com/besm6/ Any toshiba people out there? A number of my drives have a solid light on power up and don't respond to the open/close button. Toshiba's website has NOTHING about CD-ROMs doc-wise. Are Toshibas junk, did I get a bad batch, or is there something that can be done? (they have prop. ROMS, some SGI, some HP, and I'm becoming a bit worried about my IBM doing the same thing). -Scott Quinn

20 years, 1 month

IIcx/ci power supplies (missed a day so if this is answered, sorry)

by Saquinn624＠aol.com

Great resource on this at http://www.shobaffum.com/iici/ the PS provides a 5v trickle to do what was done by the batteries on the II/IIx/IIfx (provide the power to the ADB keyboard power-on switch)

20 years, 1 month

Asimov images

by Saquinn624＠aol.com

I have a CD with (I think) about everything from Asimov, plus Jagubox and a few other bits. If there aren't too many people and they asked nicely I might be persuaded to do copies, especially if they were willing to swap something, but that's not required - Scott Quinn

20 years, 1 month

Very much On Topic: Integrated Vacuum Tubes

by ajp166＠bellatlantic.net

> >Subject: Re: Very much On Topic: Integrated Vacuum Tubes > From: "Peter C. Wallace" <pcw at mesanet.com> > Date: Thu, 21 Apr 2005 06:57:54 -0700 (PDT) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >>> RCA's Nuvistor - a family often found in late 1960s TV tuners and some >>> test equipments. They are almost always triodes, and are really small - >>> 3/4 inch long, maybe 3/8 inch diameter, all metal. RCA made a few half >>> sized Nuvistors, but never sold them. I have and still use these. Common numbers are 6CW4 and 6DS4, fine devices. >> >> Some mil gear (eg PRC-41) has very small ceramic tubes -not sure if they are >> quite as small as the Nuvistor but they must be close- likewise some hearing >> aid amp tubes were pertty damn small as well. I also have an assortment of T1A sized tubes (1.125" tall by .360 dia glass) most of them are 5899 and 5636 RF pentodes. I have 1AD4 and 5862 which are miniture tubes for battery operation and they are 1.25 tall by .375 wide and about .220 thick also made of glass. I've used all of the mentined tubes in various radio projects. Allison

20 years, 1 month

HP 2100 stuff again

by jwest＠classiccmp.org

Forgot to mention, the 2100A he has there also has a WCS card & connector. WCS is about the funnest toy to have on an HP box :) Congrats again on an awesome find :) Jay West

20 years, 1 month

NS chips sought

by jwest＠classiccmp.org

I had good luck asking here for the 82S129's, I have a good supply of them now at a reasonable price. Now I need the 82S141, and likewise can't find it at the places I had found the 82S129 :\ Anyone have an idea where to poke for this bipolar prom? Jay

20 years, 1 month

Very much On Topic: Integrated Vacuum Tubes

by James＠jdfogg.com

> > I think acorn tubes are smaller. Those are UHF tubes -- I > think they > > were used in 1940s or 1950s vintage equipment for oscillators or > > Ummmm - no. A nuvistor could very nearly fit into the > acorn's envelope. > Nuvistors look like a largish metal pencil eraser - they're > substatially smaller internally than an acorn tube, as well. > And of course, as you mention, 30 years later in design. Not smaller, but more along the lines of classic (glass, pin sockets) tubes. Motorola WWII walkie-talkies used "pencil tubes". I've only seen them once, about the size of a small woman's pinkie finger.

20 years, 1 month

tube technology and EMP

by msokolov＠ivan.Harhan.ORG

Randy McLaughlin <cctalk at randy482.com> wrote: > The Russians were right in keeping tubes well beyond what we did. That's > how they got to venus! FYI, those tubes that went to Venus were designed by my dad. MS

20 years, 1 month

Microfiche scanning

by James＠jdfogg.com

> > Am I right in thinking that a home flatbed scanner has > absolutely no > > hope of providing the resolution needed to scan microfiche? I used to work for the Terminal Data Corp. We manufactured fiche cameras, including the one that made the original DEC fiche. We also manufactured a fiche scanner that output via SCSI to a workstation or Dataproducts high speed laserprinter. There aren't many dedicated fiche scanning products made, but the TDC was one of the few. Massachusetts Institute of Technology - Library Services had a TDC fiche scanner in the 1990's (and a couple of TDC cameras). It was mostly used for reproducing all the microfiched research and thesis papers, but they did offer scanning services to the public. If anyone here has contacts at MIT, or wanted to contact them about scanning services, you might find that they still have the ability to scan fiche and *may* be affordable.

20 years, 1 month

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test-drb April 2005