> On Dec 8, 2021, at 10:20 AM, David Wade via cctech
> wrote:
>
> Is "not on EPAY" a good thing. I see there is a 10% buyers premium plus 4%
> for credit card
> .. and " ALL ITEMS ARE SOLD AS IS WHERE IS AND HOW IS WITH NO WARRANTIES OF
> ANY TYPE EXPRESSED OR IMPLIED CONCERNING"
>
> G
Whoops, should have been off list...
On 12/8/2021 10:48 PM, Bob Rosenbloom via cctalk wrote:
Do you have more info on it? I can't find much on-line. Is is a stand
alone box or board set?
I love A/D and D/A stuff so would be very interested. I have many
PDP-8's, a PDP-12 and LINC-8.
Any idea o
https://www.ebay.com.au/sch/m.html?_ssn=techparts2020&_nkw=%22PCI-GPIB%2B%22
NI National Instruments PCI-GPIB+ Analyzer PCI IEEE488.2 Interface Card
(~USD140)
Ebay item #
284088568161 Copyright 1998 183619B-01
284088565868 Copyright 2001 183619C-01
284088570014 Copyright 2005 ASSY1921
Do you have more info on it? I can't find much on-line. Is is a stand
alone box or board set?
I love A/D and D/A stuff so would be very interested. I have many
PDP-8's, a PDP-12 and LINC-8.
Any idea on how much you want for it?
Thanks!
Bob
On 12/8/2021 4:11 PM, Chris Zach via cctalk wrote:
W
On Wed, Dec 8, 2021 at 9:58 PM Rob Jarratt via cctalk
wrote:
> > I have a variac rated at 2.5A. I am not quite sure whether that would be
> > sufficient to test the bricks individually. Otherwise, I guess one of these
> > would do the trick https://cpc.farnell.com/block/steu250-48/transformer-
>
> On 12/08/2021 5:14 PM Rob Jarratt wrote:
>
>
> The problem is that it isn't marked with a wattage, just a current, which
> left me wondering at what voltage. Although Will Cooke's response seems to be
> that the voltage doesn't matter, so at 240VAC it would be 600W. Can that be
> right?
On Wed, Dec 8, 2021 at 2:43 AM Jos Dreesen via cctalk
wrote:
> >Also, when the tapes arrive, are there recommendations in case their
> > drive belts are gone?
>
> You can 3D-print replacements.
> Use Innoflex filament, 100% fill-in and the following OpenScad formula :
>
> module ring(d1,d2,w)
Thanks Marc for these information. I will go study this from your link ;)
Dominique
On 9/12/2021 00:21, Curious Marc wrote:
Dominique,
Nice to see your machine working so well! I like how it lights up from
the inside. To connect it to a computer, you could simply get a Volpe
board that does
Would anyone like to make an offer on this AF01? It's a multi-channel
A/D converter for old pdp8 and pdp12's. I really don't think I need it,
I just pulled it out of my closet, and I don't want to put it back in.
Copy me off list. Complete, multiple MUX channels (16 A121's) the A704
and the op
On 12/8/21 6:21 PM, Curious Marc via cctalk wrote:
Dominique,
Nice to see your machine working so well! I like how it lights up from the
inside. To connect it to a computer, you could simply get a Volpe board that
does the Baudot 60 mA loop to ASCII RS 232 conversion for you, or build one
your
Dominique,
Nice to see your machine working so well! I like how it lights up from the
inside. To connect it to a computer, you could simply get a Volpe board that
does the Baudot 60 mA loop to ASCII RS 232 conversion for you, or build one
yourself like I did. Info on both here:
https://www.curi
That would depend on the type and size of wire (solid core, stranded,
strands of stranded, etc.).
On 12/8/2021 5:06 PM, pbir...@gmail.com wrote:
Seems to me that the actual coil resistance will limit the max-current at lower
voltages. 20 A through wire sized for 1 A seems ... unlikely?
-
> -Original Message-
> From: cctalk On Behalf Of Mike Katz via
> cctalk
> Sent: 08 December 2021 22:58
> To: General Discussion: On-Topic and Off-Topic Posts
> ; wrco...@wrcooke.net
> Subject: Re: PDP-11/70 Boards
>
> More accurately up to it's rated wattage "Power = Voltage * Current"
Variable transformers (generic. Variac is a trademarked brand of them) are
rated in amps output, not in watts or, more accurately, volt-amps. That is
because they are rated to deliver that current at ANY voltage. The main
limiting factor is flux density in the core. The flux density is proportio
Seems to me that the actual coil resistance will limit the max-current at lower
voltages. 20 A through wire sized for 1 A seems ... unlikely?
-Original Message-
From: cctalk On Behalf Of Mike Katz via cctalk
Sent: Wednesday, December 8, 2021 5:58 PM
To: General Discussion: On-Topic and
More accurately up to it's rated wattage "Power = Voltage * Current"
after all.
If you have a 100W max variac you can draw 20A @ 5V (approx) but only 1A
at 100V.
On 12/8/2021 4:44 PM, Mike Katz via cctalk wrote:
"As a general rule, a variable transformer (Variac) can provide full
rated curre
"As a general rule, a variable transformer (Variac) can provide full
rated current at any output voltage. So a 2.5A unit can provide 2.5 A at
1V, 10V, 120V, etc. With a 20V output, that is 50 VA (Watts, sort of)."
Up to the current rating of the variac. When you draw more current than
the tra
> From: Rod Smallwood
> Let me see what artwork I have
I'm curious as to what you'd be able to find. Like I said, I'm pretty sure
DEC never did an RK11-C inlay; the engineering drawings for the 19" indicator
panel (included in the RF11 engineering drawings:
http://www.bitsavers.org/pdf
> On 12/08/2021 3:58 PM Rob Jarratt via cctalk wrote:
> So, to supply the bricks on the bench, would a variac rated at 2.5A be OK? I
> am not sure I know how much current the bricks will draw at 20VAC, and at
> what voltage the 2.5A rating is given. Otherwise, would this do the trick?
> htt
> > -Original Message-
> > From: cctalk On Behalf Of Jay Jaeger
> > via cctalk
> > Sent: 05 December 2021 14:51
> > To: cctalk@classiccmp.org
> > Subject: Re: PDP-11/70 Boards
> >
> > On 12/5/2021 3:37 AM, Rob Jarratt via cctalk wrote:
> >
> > > Thanks for the tips. The transformer that
correction old age, arthritic fingers and old age?
On 12/8/2021 2:57 PM, Mike Katz via cctalk wrote:
You are correct, I counted wrong. Can I chalk it up to old date and
bad eyes😁?
On 12/8/2021 1:52 PM, Paul Koning wrote:
No, it's 5 bit tape. 2 data bits, transport sprocket holes, 3 data
bit
You are correct, I counted wrong. Can I chalk it up to old date and bad
eyes😁?
On 12/8/2021 1:52 PM, Paul Koning wrote:
No, it's 5 bit tape. 2 data bits, transport sprocket holes, 3 data bits -- top
to bottom on the reader (right side), left to right on the punch (left side).
DEC PDP-10 sys
The subject interests me because I have the same beast but which only
works in local mode. I currently don't know what is required to send
text in this monster through a computer
Below is a link to a video of my machine in action:
https://www.youtube.com/watch?v=dL-XU855C80
Dominique
On 8/12/
On 2021-12-08 11:50 a.m., Monty McGraw via cctalk wrote:
I have this terminal in my garage - sitting on its custom stand.
I purchased it years ago, but don't have a use for it.
Here is my photo of it:
https://drive.google.com/file/d/1SV4-Xx7XLHIoA898ZPRC74wZv2e8YsVK/view?usp=sharing
I'm near H
No, it's 5 bit tape. 2 data bits, transport sprocket holes, 3 data bits -- top
to bottom on the reader (right side), left to right on the punch (left side).
DEC PDP-10 systems used six bit code internally but I don't remember those
appearing on punched tape. The punched tape machines I have se
Depends on perspective I guess.. some folks swear at it; some swear by
it. There tends to be fewer watchers and the fees aren't hidden but in
the end, it's still an auction and you have to play by their rule to bid.
Steve
On 12/8/2021 10:20 AM, dave.g4...@gmail.com wrote:
Is "not on EPAY"
I thought I had recalled that Baudot was 5 bits but the paper tape is 6
bits across and I don't know of any 6 bit character codes except for
DECs upper case only character set and even their paper tape had 8 bits
so I guessed Baudot.
On 12/8/2021 1:16 PM, Paul Koning wrote:
5 bit; if it reall
Eric,
I would qualify that statement and say - I'm the Tek computer Monty :)
I have a Tektronix 4052 and 4054A, plus two Tektronix 4041 (68000 based
GPIB controller) computers :)
Both the 4052 and 4054A also have Tektronix 401x terminal emulation at up
to 9600 baud, so I don't have a use for the
5 bit; if it really were 6 bits it would typically be typesetting codes.
That's a relative of the machine used as console terminal on Dutch
Electrologica X8 computers; I recognize the "Iron cross" symbol, the figures
shift character on the D key. But some of the other function codes have
diffe
Wow 6 bit baudot paper tape I think. That's an oldie🤣
On 12/8/2021 12:50 PM, Monty McGraw via cctalk wrote:
I have this terminal in my garage - sitting on its custom stand.
I purchased it years ago, but don't have a use for it.
Here is my photo of it:
https://drive.google.com/file/d/1SV4-Xx7
I have this terminal in my garage - sitting on its custom stand.
I purchased it years ago, but don't have a use for it.
Here is my photo of it:
https://drive.google.com/file/d/1SV4-Xx7XLHIoA898ZPRC74wZv2e8YsVK/view?usp=sharing
I'm near Houston Texas.
It is too big and heavy to ship.
Monty McGr
> On Dec 8, 2021, at 1:20 PM, David Wade via cctech
> wrote:
>
> Is "not on EPAY" a good thing. I see there is a 10% buyers premium plus 4%
> for credit card
> .. and " ALL ITEMS ARE SOLD AS IS WHERE IS AND HOW IS WITH NO WARRANTIES OF
> ANY TYPE EXPRESSED OR IMPLIED CONCERNING"
Those
Is "not on EPAY" a good thing. I see there is a 10% buyers premium plus 4% for
credit card
.. and " ALL ITEMS ARE SOLD AS IS WHERE IS AND HOW IS WITH NO WARRANTIES OF ANY
TYPE EXPRESSED OR IMPLIED CONCERNING"
Give me EPAY any day
Dave
> -Original Message-
> From: cctech On Beh
up for auction (and NOT on EPAY!): what appears to be an intact System
370 control panel in PA
https://hibid.com/lot/107052050/ibm-370-145-mainframe-computer/?q=&status=open&apage=6&ipp=100&ref=lot-list
steve
> From: Marc Howard
> I've got an 11/40 I'm going to start working on. Problem is that there
> are two power supplies (H742 and H7420) that came with it but neither
> was mounted in the rack.
-11/40's in general only have one of those large H742x suppplies in a rack.
The documen
Marc: Do you have the 11/40-specific wiring harness? Assuming that you do
it's a bit tricky -- not so much mounting a given supply (aside from the fact
that they are heavy and awkward to work with even when minimally populated),
but because there is a very tight tolerance between them to threa
which Innoflex filament? There are several different hardness variants.
I used Ninjaflex 3DNF0517505, but that is because it is the only TPU type
filament I have at hand.
I would rather use a somewhat harder variant.
Jos
On Wed, Dec 8, 2021 at 8:43 AM Jos Dreesen via cctalk
wrote:
>
>
> >
> >Also, when the tapes arrive, are there recommendations in case their
> > drive belts are gone?
>
> You can 3D-print replacements.
> Use Innoflex filament, 100% fill-in and the following OpenScad formula :
>
which Innoflex
On Tue, Dec 7, 2021 at 10:38 PM Jan-Benedict Glaw via cctalk
wrote:
> However, when I checked the two drives capstans, they're old. One
> has a crack, and as things go, they feel partially either hard or
> gooey. Are there recommendations to exchange these for new ones?
I turned a replacement
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