My personal experience with DTV boxes (and I do have a small assortment I use
routinely), is that the analog pass-through only functions with the box off (RF
in->RF out), so no chance of A/V extraction in that case. The majority of newer
boxes have eliminated the pass-through option entirely.
W
> On Jun 3, 2023, at 7:12 PM, Alexander Schreiber via cctalk
> wrote:
> So the Mercedes T model was (at least in Germany, the manufacturers country)
> never called a "station wagon" because that category name doesn't exist
> there. The closest analogue to it in German parlance would be the "Komb
On Tue, Oct 11, 2022 at 4:25 PM Fred Cisin via cctalk
wrote:
>
> On Tue, 11 Oct 2022, Cory Heisterkamp via cctalk wrote:
>> If the seller has a few “worthless” diskettes laying around, he can
>> include one in each case and now the package qualifies under media mail
>>
> On Oct 11, 2022, at 1:51 AM, D. Resor via cctalk
> wrote:
>
> Does anyone have, or know of a reasonably priced supplier of good clean
> used, or new 8" floppy diskette boxes? The kind made of plastic like these?
>
> https://www.ebay.com/itm/134258177087
>
> I have one 8" box with Xerox so
> On Oct 7, 2022, at 6:14 PM, ben via cctalk wrote:
>
> Trying to hide the fact the drum makes it slow.
> Did any one ever replace the drum with core memory, on the early serial
> computers?
> Ben.
>
While not in the interest of increasing throughput, “vintage” computers with
drums that con
: http://www.ht4100.com/temp/
Thanks,
Cory Heisterkamp
> On Aug 1, 2021, at 8:28 AM, William Donzelli wrote:
>
> I think those are IBM Q-Pacs, mil spec modules for the Informer computers.
>
> --
> Will
>
> On Sun, Aug 1, 2021 at 1:53 AM Cory Heisterkamp via cctalk
> wrote:
>>
>> Does anyone recognize t
Does anyone recognize these IBM modules? My gut says late 50’s based on the
transistor packages and font. Perhaps for a contract or military system?
Thanks- Cory
https://www.dropbox.com/s/izitf1lmjqwcbuo/IBM1.jpg?dl=0
https://www.dropbox.com/s/dq8macaubrechkz/IBM2.jpg?dl=0
> On Jul 29, 2021, at 12:46 PM, Chuck Guzis via cctalk
> wrote:
>
> A link I forgot to include that gives a flavor of how the tapes are used:
>
> https://files.eric.ed.gov/fulltext/ED112083.pdf
>
> Curious thing is that was no take-up reel on the MT/ST; the 100 feet of
> tape simply was ejec
This is a bit of a long shot, but is anyone aware of a successful method to
read IBM Selectric MT/ST tapes? A museum in Australia has a box of them and are
interested in the contents.
I'm fairly involved in the global Selectric community and while 1 or 2 MT/ST’s
exist, they’re non-functional. I
> On Jun 20, 2021, at 12:19 PM, Norman Jaffe via cctech
> wrote:
>
> Basically, pre-1960, there couldn't be a 'general book on programming', since
> every system was a unique environment - the only languages that could even be
> remotely considered to be common were ALGOL 60 and FORTRAN II..
> On Mar 13, 2021, at 3:24 PM, Jos Dreesen via cctalk
> wrote:
>
> On 13.03.21 20:43, Cory Heisterkamp via cctalk wrote:
>> I’m wondering if anyone recognizes this PCB. Double-sided, 74xx vintage,
>> measuring 14”x15”. There’s a “B.I.” logo in one corner, but no g
I’m wondering if anyone recognizes this PCB. Double-sided, 74xx vintage,
measuring 14”x15”. There’s a “B.I.” logo in one corner, but no google match. IC
date codes are ’77/’78 vintage.
There’s a pair of DB-25’s, a BCD encoder, and for some reason, two pots. DC
rectification appears to take pla
I found myself cleaning up the shop recently, and came across some vintage
circuit boards I had stashed away 20 years ago. I’m curious if anyone can shed
some light on what systems they originally went to. Here’s a link to the
album…more info below.
https://photos.app.goo.gl/amRmm5P8375js4o1A
On Mon, Oct 21, 2019 at 11:51 AM Tony Duell via cctalk <
cctalk@classiccmp.org> wrote:
> > Theinfrared array you're thinking of was invented at PLATO, for flat
> panel (plasma) displays. They don't work for CRTs because of the convex
> screen.
>
> My HP150 will have to disagree with you there.
>
Hey Guys,
I recently picked up an MDS 6401 Key-To-Tape unit in NCR guise to park next to
my keypunches. It's been in storage for a couple decades and is in pretty
decent shape. Even has a tape on it from when the university that had it pulled
the plug and sent it off for surplus. Found an inter
On Jun 3, 2019, at 7:33 PM, Grant Taylor via cctalk wrote:
> On 6/3/19 5:10 PM, steven stengel via cctalk wrote:
>> I really just want it out of her house.
>
> You might be able to find a resale shop that will pick up items (donations)
> from peoples houses.
>
> Many of them around my house w
On Tue, Apr 16, 2019 at 11:08 AM Noel Chiappa via cctalk <
cctalk@classiccmp.org> wrote:
> > From: Christian Corti
>
> > 3710 Euro... someone with definitely too much money ... So no, we did
> > not get the system, and it probably won't go into a museum.
>
> Well, I did send you email
On Wed, Mar 20, 2019 at 12:58 PM Al Kossow via cctalk
wrote:
> Josh scanned some Link Mark I documentation, and I found a pdf describing
> some of the history of early Link digital flight simulators
>
> uploaded to:
>
> http://bitsavers.org/pdf/generalPrecision/Link_Mark_I
Interesting reading,
On Tue, Feb 19, 2019 at 11:03 AM Peter Coghlan via cctalk <
cctalk@classiccmp.org> wrote:
> >
> > Old tech, but not computers:
> >
> >
> https://madison.com/business/galesville-antique-phone-dealers-looking-to-offload-vast-collection/article_b1845009-c861-50ff-82c8-60a15866fc6d.html
> >
>
>
> Defi
Reminds me of a few years ago when I bought some odds and ends out of a NASA
engineer's estate on the space coast. In the mix was a Selectric I/O service
manual (with NASA Prop stamps). What struck me as unusual was that it was for
the keyboard-less version. Yes, even though it was output-only,
On Nov 19, 2018, at 7:28 PM, Alan Perry wrote:
> In the video that I looked at, the guy cut 8 1/8" pieces of double-sided foam
> tape, three each along the top and bottom and one on each side, then sealed
> it with clear packing tape. It seemed to me that using some optically clear
> adhesive
Those retrace lines are likely an artifact of the brightness control being
set too high. It's pretty typical with older monochrome TV sets. It also
looks like there's insufficient vertical sweep, probably due to old
capacitors.
On a CRT that small, I wouldn't be concerned about direct fitting the
Liam, thanks for posting this. What a wonderful way to waste an hour. ; )
I can also highly recommend the book 'Digital Apollo', which goes into some
detail about the man-machine interface of the AGC and the internal debate at
the time of the role of man as "spacecraft pilot". -C
On Sep 18, 20
On Wed, May 2, 2018 at 10:22 AM, Chuck Guzis via cctalk <
cctalk@classiccmp.org> wrote:
> On 05/02/2018 08:06 AM, Eric Christopherson via cctalk wrote:
>
> > When you say you snipe with a bot, do you mean you use eBay's highest-bid
> > functionality to do it? Or do you use third-party software?
>
If you can guarantee nothing will end up placed on top, it should be fine
strapped to a pallet. One thought would be to remove the feet and use the
bolt holes to attach it to a square of plywood, then screw that to the
pallet. Cinching a strap down over the top of it would probably not end
well. Ne
On Feb 24, 2018, at 1:09 PM, Pete Lancashire via cctalk wrote:
> I have a small, 5-20 stack of 16 mm's of movies dealing with computers
>
> The one in front of me is
>
> "Once Upon a Punched Card"
>
> I am looking for a place in the USA with a reasonable price to have them
> digitized and I wil
On Feb 18, 2018, at 1:53 PM, Brent Hilpert via cctalk wrote:
>
> Paul Pierce has a G-15:
> http://www.piercefuller.com/collect/bendix/index.html
>
> Or he did, ca 2001.
>
> I would so like to be restoring a tube computer.
>
> How is Cory's LGP-30 project going, if he's reading?
On Tue, Sep 26, 2017 at 12:21 AM, Ed Sharpe via cctalk <
cctalk@classiccmp.org> wrote:
> we see this same effect in large studio cameras on board monitors they
> have. we have just left as us as the large all tube innards do not work
> alas Ed#
>
> Sent from AOL Mobile Mail
>
> On Monday, Sep
On Sep 10, 2017, at 12:22 PM, Noel Chiappa via cctalk wrote:
>> From: Brent Hilpert
>
> ...snip...
>
>> When/what/who was the actual first assembler conceived or produced?
>
> Noel wrote:
> A very good question indeed! Does anyone know?
>
> I have this bit set that one early computer assigne
On Sep 10, 2017, at 4:24 PM, Fred Cisin via cctalk wrote:
> On Sun, 10 Sep 2017, couryho...@aol.com wrote:
>> then. who was. the TRUE first?
>
> Michael Shrayer's girlfriend?
> And what motivated him to write "Electric Pencil"?
> Jerry started using it early on, but he was NOT the firs
On Aug 26, 2017, at 5:50 PM, John H. Reinhardt via cctalk wrote:
> On 8/26/2017 4:02 PM, Pete Lancashire via cctalk wrote:
>> https://eauclaire.craigslist.org/atq/d/aa-occasional-sales/6248628617.html
>> Picture #8 in rear right corner
>
> And #11. It's got a keyboard and number pad so I'm thin
> On Thu, 17 Aug 2017, william degnan via cctalk wrote:
>> http://www.ebay.com/itm/Digital-Equipment-Corporation-DEC-PDP-lab8-e-Vintage-1970s-computer/15297190
>>
>> I hope someone my most-often-traversed groups (CCTech or VCFed) gets this!
>
> I'd love to keep 'an eye' on it, but I'm not su
Hi Ali,
I've had a few things shipped lately and $250 isn't out of line. It's small
enough that you could try your luck on UShip; if you go that route the
pallet wouldn't be needed. If you use a traditional transporter, see if the
seller is willing to pick up a couple cheap nylon ratcheting tie do
On Jul 29, 2017, at 10:08 AM, ANDY HOLT via cctalk wrote:
>
>
>
> Or on location, perhaps (I'm in the UK)
> A few years ago I had mine and my fathers 8mm films transcribed and I don't
> think it cost more than £50 for about a dozen reels. (I certainly wouldn't
> have paid £100 a reel)
>
On Tue, Jul 18, 2017 at 9:14 AM, Philipp Hachtmann via cctalk <
cctalk@classiccmp.org> wrote:
>
> On 18.07.2017 16:10, Bill Gunshannon via cctalk wrote:
>
>>
>> I would think it would be worth more in its original condition.
>>
>
> I'm not sure. Because it looks cool. And I'm not sure if an old IB
On Fri, May 12, 2017 at 12:17 PM, Shoppa, Tim via cctalk <
cctalk@classiccmp.org> wrote:
> Cory asks:
> > http://www.radar58.com/panel/
>
> I had always thought Transistor Electronics Corporation had something to
> do with CDC (both in Minneapolis) but CHM tells me I was wrong: it was a
> spin-off
Can anyone ID what this panel is from? I picked it up recently for parts but
the more I study it the more I suspect it may have been part of a computer
system. At least one status light references 'No Write Ring'. The displays at
the top are terrific, 7-segment incandescent units!
Photos at:
ht
On Mar 15, 2017, at 3:11 AM, Pontus Pihlgren via cctalk wrote:
> On Tue, Mar 14, 2017 at 05:41:57PM -0400, Noel Chiappa via cctalk wrote:
>>> From: Dwight Kelvey
>>
>>> I need on of those.
>>
>> I think it belongs in a museum, actually. Provided they can make it work, of
>> course! :-) I wonder
On Mar 30, 2017, at 4:17 PM, Rick Bensene via cctalk wrote:
> Hello, all,
>
> In mid-June, I am planning a trip to Mountain View for two days to visit the
> Computer History Museum.
>
> I plan on flying out of Portland early AM on June 14, checking into hotel,
> then heading straight to the
Hey guys, figured it was time for an update on the LGP-30 resuscitation.
Some further detective work found a leaky 1500uF cap in one of the B+ supplies
which was causing the 'surging' issue on the scope. For good measure I replaced
all six 1500 and 3000uF caps even though ripple was low. Better
Some promising news on getting the LGP-30 up and running. With all systems
stable, I tightened the head spacing on the three timing track heads (using
brass 0.001" feeler gauges though I may have to go closer). This has resolved
'hanging' when hitting Start; it actually appears to execute for a
For those curious about the status of the LGP-30 restoration, I’ve got a
blog up with the latest. http://radar58.com/LGP30/
The power supplies are stable, the blower unit was overhauled and new
bearings installed, all the modules have been recapped. I had a noisy
bearing in the memory drum, tha
On Jan 12, 2017, at 4:19 PM, William Maddox wrote:
> Rarest:
> Computer Control Company (3C, later Honeywell) DDP-116 minicomputer (2
> complete, 1 missing front panel)
> Discrete germanium transistors, first 16-bit minicomputer, first of the
> Honeywell "Series 16" line.Provenance of m
Given the topic, I have this rather *unique* punch card reader, if you want
to call it that. It is marked EAI but that's where the trail turns cold.
Perhaps used as a microcode source? All holes are read simultaneously via
individual switches. If someone has seen one before, please speak up. -C
h
On Jan 7, 2017, at 4:50 PM, Kyle Owen wrote:
> I guess I'm on a roll, trying to find out what some things are in the
> collection. Any idea what this paper tape reader could've been connected
> to?
>
> http://imgur.com/a/DjRj7
>
> Thanks,
>
> Kyle
Kyle,
That reader teams up with Friden's "
Christian Corti had made available the German version of the LGP-30
Maintenance Manual, copied here:
http://ed-thelen.org/comp-hist/LGP-30MaintenanceManual-German.pdf
Ed Thelen had OCR’d and translated some of the pages, but I’m looking for a
copy of the complete English version if someone has it
On Thu, Jan 5, 2017 at 3:44 AM, Klemens Krause <
kra...@informatik.uni-stuttgart.de> wrote:
>
>>
>> http://www.radar58.com/temp/drum.jpg
>> http://www.radar58.com/temp/drum2.jpg
>>
>
> From the fotos your drum looks better than our working one, with
> the exception of the large engraving on the ri
On Jan 4, 2017, at 1:02 PM, allison wrote:
> On 1/4/17 1:06 PM, Jon Elson wrote:
>> On 01/04/2017 09:03 AM, Klemens Krause wrote:
>>>
>>>
We both have analog recordings (from digitizing scopes) and logic analyzer
dumps. So concerning the LGP-30, all relevant information about the dru
On Jan 3, 2017, at 2:22 PM, Klemens Krause wrote:
> On Tue, 3 Jan 2017, Cory Heisterkamp wrote:
>>
>>
>> What I’m wondering is if anyone is familiar with the setup/adjustment
>> procedure for getting the heads set correctly. There *might* be a couple of
> We
On Tue, Jan 3, 2017 at 1:47 PM, Brian L. Stuart
wrote:
> On Tue, 1/3/17, Cory Heisterkamp wrote:
> > What I’m wondering is if anyone is familiar with the setup/adjustment
> > procedure for getting the heads set correctly. There *might* be a couple
> of
> > unused tracks
While waiting for the machine, I decided to investigate the stuck drum.
This unit has 71 read/write heads plus what appears to be an inductive
pickup for the system clock. Upon closer examination I discovered multiple
heads in contact with the drum surface preventing rotation. And in the
process of
On Dec 28, 2016, at 4:16 PM, jim stephens wrote:
>
> On 12/28/2016 8:38 AM, Cory Heisterkamp wrote:
>>
>> Guys, thanks for all the feedback. A challenge? Absolutely. But this is
>> likely as close as I'll ever come to having a first generation machine,
>>
On Dec 26, 2016, at 8:49 AM, william degnan wrote:
> On Mon, Dec 26, 2016 at 10:37 AM, Christian Corti <
> c...@informatik.uni-stuttgart.de> wrote:
>
>> On Fri, 23 Dec 2016, Cory Heisterkamp wrote:
>>
>>> I recently became the owner of an LGP-30, supposedly
provide
> that service.
>
> -pete
>
> On Fri, Dec 23, 2016 at 11:45 AM, Chuck Guzis wrote:
>
>> On 12/23/2016 08:06 AM, Cory Heisterkamp wrote:
>>> Hi Folks,
>>>
>>> I recently became the owner of an LGP-30, supposedly in 'working'
>
afe travel. I'm especially worried
about the drum (drum lock?), but haven't been able to find a maintenance or
setup doc.
Anyone out there with experience or can offer a few pointers?
Thanks,
Cory Heisterkamp
On Thu, Nov 17, 2016 at 2:57 PM, Al Kossow wrote:
>
>
> On 11/17/16 12:44 PM, Kyle Owen wrote:
> > are there any other
> > computer music albums out there?
>
> yes, check the Warners budget (Nonesuch) label
>
>
>
Don't forget "Music From Mathematics" to get your IBM 7090 fix. -C
On Tue, Oct 18, 2016 at 4:46 PM, Jason T wrote:
> On Tue, Oct 18, 2016 at 7:57 AM, Ben Sinclair wrote:
> > Great photos! I'm curious as to how long ago this equipment was in
> > operation. The photos here and on the auction site almost looked like
> > someone just got up and walked away, at leas
On Mon, Oct 17, 2016 at 11:37 PM, Josh Dersch wrote:
> On 10/17/16 5:07 PM, Cory Heisterkamp wrote:
>
> For those curious about the equipment that sold last week, I put together
>> an album from my brief stop on Saturday. Let me know if you have trouble
>> viewing it.
>
For those curious about the equipment that sold last week, I put together an
album from my brief stop on Saturday. Let me know if you have trouble viewing
it.
https://goo.gl/photos/yb83SJSj67gS96n39
On closer inspection it appears the documentation for that GP-4, as well as
some of the other co
Someone asked yesterday if the raised floor was being sold. Looks like
bidding ends this morning.
https://grafeauction.proxibid.com/aspr/Quantity-static-flooring-throughout-building/32465315/LotDetail.asp?lid=32465315
-Cory
On Oct 13, 2016, at 9:33 AM, William Maddox wrote:
> This looks like a GP-4, though I am suspicious that parts of it have been
> modernized. The GP-4 had a drum memory.
>
> https://grafeauction.proxibid.com/aspr/Genal-Precision-Systems-2-door-avionics-cabinets/32464723/LotDetail.asp?lid=32464
Hello gents, seeking some advice. I recently brought home my IBM 3741 Data
Station that has been in controlled storage since the late 90’s and was
working at that time. Given almost 20 years has passed, what would be the
best way to power it back up? I believe I have a variac of sufficient size
aro
On Tue, May 24, 2016 at 4:43 PM, Sean Caron wrote:
>
>
> On Tue, 24 May 2016, Swift Griggs wrote:
>
>
>> It probably still impressed the suits when they walked the data center.
>> I've done data center tours with row after row of HP or Dell x86 servers
>> and it's not much to look at.
>>
>> -Swif
On Fri, May 6, 2016 at 10:50 AM, Jon Elson wrote:
> On 05/06/2016 08:50 AM, Pontus Pihlgren wrote:
>
>> The following is the teletype that I believe must come from a UNIVAC 418
>> or 1106 console desk. It looks like a model 28. Can anyone confirm?
>>
>> http://www.update.uu.se/~pontus/slask/fb_co
Well, a 'new, never used" one didn't sell for US $199so
http://www.ebay.com/itm/Rare-Functional-Vintage-Apple-410-Color-Plotter-Printer-Never-Used-1983-A9M0302-/181905173892
On Nov 8, 2015, at 5:51 PM, william degnan wrote:
> On Sun, Nov 8, 2015 at 6:27 PM, Robert Jarratt
> wrote:
>
>
Nice looking Burroughs! *kidding*
Looks like the seller hasn't had any bites since the last go-round. I did
some investigating at that time but couldn't come up with a Honeywell
system that had this 'stylized' unit. However, I did find photos of
plain-jane 33's with Honeywell badges on the covers
I'll throw my two-cents in as I have a fairly modest collection of
teletypes. A nice feature of the 32/33 is that the tape punch/reader is
built-in, but understand that these were cost-reduced models that can be
fairly finicky to get going and keep running. The issue right now is that
the market fo
Are there any operational G-15's out there? Seems like this would be a good
model to restore/demonstrate that doesn't come with all the usual baggage
of a first gen machine (exotic power, A/C requirements, thousands of tubes,
etc). -C
On Fri, Sep 11, 2015 at 11:27 AM, Al Kossow wrote:
> On 9/11/
Supposedly these guys have the IBM dies and as of last year, were still
making/selling new tab cards. The CHM was investigating them as a source at one
point but I believe they now have more cards than they'll ever need. -C
http://www.californiatabcard.com/Tab_Cards.html
On Sep 10, 2015, at 6:
I'd be curious, too. I was *this close* to throwing in a bid seeing as this
turned up within driving distance...until I was politely reminded that I have a
few other projects around here. The coffee can of 'spare parts' also gave me
pause. -C
On Sep 5, 2015, at 9:08 PM, Jay Jaeger wrote:
> O
What Todd is suggesting sounds a lot like youcrate.com. They were an
economical alternative for a while (friends have used them several times)
but in the last 24 months their prices escalated beyond reason. They pick
up the pallet and they drop off the pallet but it's up to you to handle the
rest.
Does the 5300 have SCSI? An external CD drive would be one option. Also, if
there's enough HD space (and you're patient enough for the transfer) you
could set up a Telnet connection and file share. -C
On Fri, Aug 21, 2015 at 9:45 AM, Joe Giliberti wrote:
> Greetings!
>
> I know that many of my p
Randy,
One option might be UShip. These are best transported laying down once the
paper and tape spindles are removed and preferably, that shipping screws anchor
down the chassis (though I have moved them without). With UShip, you set an
asking price with parameters, such as blanket wrap, or co
Buchholz's 'Planning a Computer System: Project Stretch' is a good start,
but I'd be interested in hearing about any other technical sources that
folks know about. -C
amturing.acm.org/Buchholz_102636426.pdf
On Tue, Jul 14, 2015 at 10:58 AM, Jay Jaeger wrote:
> I wonder if there is anywhere near
I use to watch for these on ebay and it seems one would pop up every 12-16
months or so, usually on the opposite side of the country, and sell for
$500-$1000 depending on condition. I recall when a certain 129 was up for bid
back in 2005; info preserved by the 'IBM Collectibles' webpage.
http:
I'll add that I've had several platens and power rolls rebuilt by JJ Short and
the service was top notch. -C
On Jun 4, 2015, at 5:07 PM, Chuck Guzis wrote:
> I'll add that if the Rubber Renue treatment is ineffective, you can have your
> platen rebuilt by JJ Short:
>
> http://www.jjshort.com/t
Michael,
Sounds like you're making some real progress. Next time you're near the ASR33,
check the rubber hammer for the print cylinder. These have a tendency to self
destruct and in doing so, destroy the cylinder itself...and they can go at
anytime. There's a fellow on the Greenkeys that has to
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