test-drb October 2002

test-drb@ccmp.vtda.org

261 participants
654 discussions

by rigdonj＠cfl.rr.com

I've picked up several of GS models in a bunch of surplus. Is anyone familar with them? I'm wondering if you HAVE to use Ricochet's network or if they can be set up to work peer to peer. Joe

22 years, 2 months

[GreenKeys] Line feed on a 33ASR

by gil＠vauxelectronics.com

>From: "O. Warren" <ocwarren(a)burgoyne.com> >To: <greenkeys(a)mailman.qth.net> >Subject: [GreenKeys] Line feed on a 33ASR >Date: Sun, 20 Oct 2002 08:34:35 -0600 > >Hi... > >About line feed on a 33ASR.. > >I'm a retired Western Union Field Service Technician, and we used these >33ASR's with internal data sets (modems) as TWX machines. They also made a >good low speed pre Internet on-line terminal. > >>From what I remember, the line feed prowl was a concentric adjustment on the >left side of the platen. > >>From the message I read, the selector part is the problem. Typically first >check that the selection is working with a test of blanks and rub outs, or a >string of *'s and U's. This will test for machine reversals. Then check >the line feed selection. Look for lack of oil, then weak or missing >springs, misarranged levers, etc.. > >Then oil. Dirt on the distributor and keyboard contacts and lack of oil >will kill the machine. The proper oil is in between 30 weight motor oil and >3 in 1 oil. Sears Roebuck used to sell what they termed "air conditioner >oil", which was almost an exact replacement for "Teletype oil", and also in >a squeeze bottle. Be sure that someone didn't use grease instead of oil and >"gooey" the mechanism up!! > >Your machine is a good teaching tool. Watch the selector mechanism work in >reversals and then the lined feed mechanism operate. whatever the problem, >it will become apparent.. > >Best, > >Dick Warren >ocwarren(a)burgoyne.com > >_______________________________________________ >GreenKeys mailing list >GreenKeys(a)mailman.qth.net >http://mailman.qth.net/mailman/listinfo/greenkeys > > ;----------------------------------------------------------- ; vaux electronics, inc. 480-354-5556 ; http://www.vauxelectronics.com (fax: 480-354-5558) ;-----------------------------------------------------------

22 years, 2 months

[GreenKeys] Line feed on a 33ASR

by gil＠vauxelectronics.com

>From: "Jack" <wa2hwj(a)worldnet.att.net> >To: <greenkeys(a)mailman.qth.net> >Subject: Re: [GreenKeys] Line feed on a 33ASR >Date: Sun, 20 Oct 2002 10:50:20 -0400 > >Of all the aggravating adjustments on the 33, the line feed >gets the award! Later machines had a much more refined >mechanism, but the older and probably more plentiful models >required a lot of cussing, swearing and a little adjusting. >The line feed pawl that actually moves the platen sometimes wears. > >After making sure your machine is in good operating shape by >sending the reversals (U*U*U*U*) and making sure the >selector is working correctly, watch to see if the pawl >tries to advance the platen every time you send it a >LINE FEED character. If it seems to miss sometimes and only >feed halfway other times, then that's what you need to >fiddle with... > >Jack WA2HWJ > >NNNN > > > > >_______________________________________________ >GreenKeys mailing list >GreenKeys(a)mailman.qth.net >http://mailman.qth.net/mailman/listinfo/greenkeys > > ;----------------------------------------------------------- ; vaux electronics, inc. 480-354-5556 ; http://www.vauxelectronics.com (fax: 480-354-5558) ;-----------------------------------------------------------

22 years, 2 months

[OT] paper on Retro ?

by pete＠dunnington.u-net.com

On Oct 19, 11:36, Fred Cisin (XenoSoft) wrote: > > Who remembers drawing a cross or a diagonal line on the top of the card > > deck, so you had some chance of re-ordering the deck > Depended a lot on how often it would be changed. > On a deck that would be changed OFTEN, you put ONE diagonal. Next time > that it changed significantly, you'd put a second diagonal. By the time > that you had a dozen different colors and directions of diagonals, that > deck would be overdue to be recopied to have nice fresh crisp cards. We rarely did that. We did use diagonal line(s) to see if a deck needed sorted; if it wasn't too big then the line was usually enough. > At many locations, different colors of cards had special meanings. When I > was working at Goddard Space Flight Center, I did not have appropriate > clearance for handling some of the colors of cards that I was working > with. Yes, I can't remember all the colours except that blue was usually JCL. > > > Who remembers using a folded card (16 thou) to check the points on their > > > engine (nominally 15 thou)? Folded in three to check the spark plug gap > > > (nominally 25 thou)?? > > And what did you use for adjusting your valves? (~ .006) Zig-zags? No, anything more serious than a quick sanity check merited a real feeler gauge :-) -- Pete Peter Turnbull Network Manager University of York

22 years, 2 months

Apple //e and Mac parts

by dan＠ekoan.com

I was quickly corrected regarding the cables I mentioned earlier. They are DB-19 to 20-pin header (keyed), apparently an interface cable to the UniDisk drive. I also have several ribbon cables for the older style floppy drives. Also, I just located three Apple IIe emulation cards for the Mac LC series. These are just the cards, part number 820-0444-A. They're in anti-static bags but not sealed. Cheers, Dan http://www.decodesystems.com/wanted.html

22 years, 2 months

Unibus on a VAX 6000 (was Re: New VAX 6000 toys.)

by IVIE＠cc.usu.edu

Ethan Dicks said: > If they can take it, you'd need a DWBUA on a VAXBI bus (there is no > Unibus adapter for XMI). ISTR when the 6000 was current that DEC > imposed a limit on how fast a machine could take a DWBUA, not to > screw the customer, but because some of the (then) newer machines > had so many layers between the Unibus peripherals and memory that > timings could not be maintained. I am aware of an application that used a Unibus on a VAX 6520. The system would occasionally spontaneously crash; it looked to me like the UNIBUS adapter was getting wedged. Rumor has it they fixed it with a microcode upgrade to the DWBUA, but I doubt that microcode was ever made generally available. -- Roger Ivie ivie(a)cc.usu.edu

22 years, 2 months

ASR-33 Line Feed Problems

by cmcnabb＠4mcnabb.net

I had this half-linefeed problem on my ASR-33 when I first rescued it >from the Barn. After a few nights of careful study (watching the mechanism at work) I decided that the spring on the ratchet device was stretched to the point of not being springy any more. I replaced it with another (from a carburater rebuild kit, as I recall) and it has worked fine ever since.

22 years, 2 months

ASR33 linefeed problems...

by ard＠p850ug1.demon.co.uk

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22 years, 2 months

VT52 repair [was: Favorite terminal]

by Antonio.Carlini＠riverstonenet.com

>Does anyone have the schematics for the VT52 ? >Or a hint where I should start looking for common errors ? You can start at http://www.vt100.net You'll find a maintenance guide and a pocket service guide at the very least. Antonio

22 years, 2 months

Looking for: Ai Cybernetic Systems Model 1000 Speech Synthesizer.

by Jack＠Coats.org

I think I still have one. You might check with Wirt Atmar at AI Cybernetics. He did the original AI Cybernetic synthesizer.

22 years, 2 months

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test-drb October 2002