26 Nov
2017
26 Nov
'17
2:09 p.m.
does the 71 sate seem early?
In a message dated 11/26/2017 2:38:17 P.M. US Mountain Standard Time,
cctalk at classiccmp.org writes:
The NCR 260 (first part of the part number) was a KSR portable
thermal printing terminal.
Somewhat similar to the Silent 700.
But, the NCR 260 had an integrated modem with acoustic coupler
26 Nov
26 Nov
2:33 p.m.
New subject: what is this NCR modem? what did it go to?
On 11/26/2017 02:09 PM, Ed via cctalk wrote:
does the 71 sate seem early?
Looking at the modem, perhaps a little too early, judging from its size.
Patent date perhaps?
But 300 baud acoustic coupler modems date into the 1960s.
--Chuck
2:41 p.m.
New subject: what is this NCR modem? what did it go to?
> does the 71 sate seem early?
On Sun, 26 Nov 2017, Chuck Guzis via cctalk wrote:
Looking at the modem, perhaps a little too early,
judging from its size.
Patent date perhaps?
1971 is the copyright date on the "Basic Concepts Manual" with it.
2:38 p.m.
On Sun, 26 Nov 2017, COURYHOUSE at aol.com wrote:
does the 71 sate seem early?
No, a 1971 date does not seem too early.
The price seems steep, even for a "relatively" early modem.
Bell 103 (300bps) dates from 1962.
The Bell 101 (110 baud) was 1958.
SCROTUS "Carterfone" was 1968 (ruling permitting direct connect)
Bell 212A (1200bps) came out in 1976.
The Livermore Data Systems modems that I sold off were from about 1964?
1970-1972, when I was working at Goddard Space Flight Center (Bldg 26,
"National Space Sciences Data Center"), we used a time-sharing system for
APL. APL type ball on Selectric terminal.
Yes, 1971 is prior to most mass-marketed "personal computers"
(1978?: Apple, PET, TRS80).
But there were teminals.
27 Nov
27 Nov
1:46 p.m.
New subject: Livermore Data Systems / was Re: what is this NCR modem? what did it go to?
On 2017-Nov-26, at 2:38 PM, Fred Cisin via cctalk wrote:
On Sun, 26 Nov 2017, COURYHOUSE at aol.com wrote:
Were those the Livermore Data Systems modems in a wood box you were selling?
Did you have anything to ascertain the 1964 date for LDS, or were you getting that date
from the stuff on the web?
There's stuff reffed all over the web and youtube of some guy stating the LDS Model A
(in the dovetailed wood box) as 1964 and maybe 1963, his unit is serial # 279.
http://www.phreakmonkey.com/2009/05/1964-livermore-data-systems-model-modem…
etc.
He seems to be basing the claim on an LDS Model B unit (once at UCDavis, now at CHM)
http://www.computerhistory.org/collections/catalog/102630200
which claims circa 1965, and 'thus the model A should be at least a year
earlier'.
I have an LDS Model A, serial # 858, the dates codes on the components are 1969 to 1970.
I'm a little skeptical the model was being made as early as 1964.
I wish the guy would, or knew to, simply open the unit and look at the date codes rather
than guessing.
Someone in some comments suggests LDS wasn't building these until 1968, which strikes
me as more plausible.
does the 71 sate seem early?
No, a 1971 date does not seem too early.
The price seems steep, even for a "relatively" early modem.
Bell 103 (300bps) dates from 1962.
The Bell 101 (110 baud) was 1958.
SCROTUS "Carterfone" was 1968 (ruling permitting direct connect)
Bell 212A (1200bps) came out in 1976.
The Livermore Data Systems modems that I sold off were from about 1964?
...
2:26 p.m.
New subject: Livermore Data Systems / was Re: what is this NCR modem? what did it go to?
> The Livermore Data Systems modems that I sold off
were from about 1964?
On Mon, 27 Nov 2017, Brent Hilpert via cctalk wrote:
Were those the Livermore Data Systems modems in a wood
box you were selling?
Did you have anything to ascertain the 1964 date for LDS, or were you
getting that date from the stuff on the web?
. . .
Someone in some comments suggests LDS wasn't
building these until 1968,
which strikes me as more plausible.
Thank you!
That is why I put a question mark after 1964.
I was basing it on nothing more than verbal comment by the guy that I got
them from. And, while I had them, I hadn't had any reason to
particularly care.
1968 does, indeed, seem more plausible.
It still serves to illustrate that 1971 is NOT too early for that NCR.
--
Grumpy Ol' Fred cisin at xenosoft.com
5:17 p.m.
New subject: Livermore Data Systems / was Re: what is this NCR modem? what did it go to?
On 11/27/2017 2:26 PM, Fred Cisin via cctalk wrote:
> The
Livermore Data Systems modems that I sold off were from about 1964?
On Mon, 27 Nov 2017, Brent Hilpert via cctalk wrote:
Were those the Livermore Data Systems modems in a
wood box you were
selling?
Did you have anything to ascertain the 1964 date for LDS, or were you
getting that date from the stuff on the web?
. . .
Someone in some comments suggests LDS wasn't
building these until
1968, which strikes me as more plausible.
Thank you!
That is why I put a question mark after 1964.
I was basing it on nothing more than verbal comment by the guy that I
got them from.?? And, while I had them, I hadn't had any reason to
particularly care.
1968 does, indeed, seem more plausible.
It still serves to illustrate that 1971 is NOT too early for that NCR.
--
Grumpy Ol' Fred???????????? cisin at xenosoft.com
5:25 p.m.
New subject: Livermore Data Systems / was Re: what is this NCR modem? what did it go to?
On 11/27/2017 2:26 PM, Fred Cisin via cctalk wrote:
I can add another data point to the discussion:
My LDS Model A with SN 0491 has two TI transistors both with data code
"6914"
And for what it's worth, if you have one and have never opened it up, go
do so right now!??? The three small circuit boards have a 3"x4" piece of
the infamous black foam to pad the cards when inserted in the case.? Of
course the foam is mostly gone now except for where it wraps around the
cards and corrodes the components that it touches!
Steve
> The
Livermore Data Systems modems that I sold off were from about 1964?
On Mon, 27 Nov 2017, Brent Hilpert via cctalk wrote:
Were those the Livermore Data Systems modems in a
wood box you were
selling?
Did you have anything to ascertain the 1964 date for LDS, or were you
getting that date from the stuff on the web?
. . .
Someone in some comments suggests LDS wasn't
building these until
1968, which strikes me as more plausible.
Thank you!
That is why I put a question mark after 1964.
I was basing it on nothing more than verbal comment by the guy that I
got them from.?? And, while I had them, I hadn't had any reason to
particularly care.
1968 does, indeed, seem more plausible.
It still serves to illustrate that 1971 is NOT too early for that NCR.
--
Grumpy Ol' Fred???????????? cisin at xenosoft.com
28 Nov
28 Nov
12:58 p.m.
New subject: Livermore Data Systems / was Re: what is this NCR modem? what did it go to?
On 2017-Nov-27, at 5:25 PM, steve shumaker via cctalk wrote:
On 11/27/2017 2:26 PM, Fred Cisin via cctalk wrote:
I can add another data point to the discussion:
My LDS Model A with SN 0491 has two TI transistors both with data code "6914"
And for what it's worth, if you have one and have never opened it up, go do so right
now! The three small circuit boards have a 3"x4" piece of the infamous black
foam to pad the cards when inserted in the case. Of course the foam is mostly gone now
except for where it wraps around the cards and corrodes the components that it touches!
Thanks for the additional datapoint.
It does suggest Model A production may likely have started in 1968.
Actual date codes in mine were 6908 to 7008.
The larger caps are also a good place to look for date codes.
I did the schematic, if you have an interest.
Eventually I'll get a little web article up for the model.
I couldn't find the ebay listing for the NCR modem for some reason, either using the
number or by searching by keywords.
> The
Livermore Data Systems modems that I sold off were from about 1964?
On Mon, 27 Nov 2017, Brent Hilpert via cctalk wrote:
Were those the Livermore Data Systems modems in a
wood box you were selling?
Did you have anything to ascertain the 1964 date for LDS, or were you getting that date
from the stuff on the web?
. . .
Someone in some comments suggests LDS wasn't
building these until 1968, which strikes me as more plausible.
Thank you!
That is why I put a question mark after 1964.
I was basing it on nothing more than verbal comment by the guy that I got them from.
And, while I had them, I hadn't had any reason to particularly care.
1968 does, indeed, seem more plausible.
It still serves to illustrate that 1971 is NOT too early for that NCR.
--
Grumpy Ol' Fred cisin at xenosoft.com
2:54 p.m.
New subject: Livermore Data Systems / was Re: what is this NCR modem? what did it go to?
On Tue, 28 Nov 2017, Brent Hilpert via cctalk wrote:
I couldn't find the ebay listing for the NCR modem
for some reason,
either using the number or by searching by keywords.
https://www.ebay.com/itm/132411929563
3:11 p.m.
New subject: Livermore Data Systems / was Re: what is this NCR modem? what did it go to?
On 2017-Nov-28, at 2:54 PM, Fred Cisin via cctalk wrote:
On Tue, 28 Nov 2017, Brent Hilpert via cctalk wrote:
That works . . . forgot about composing the URL directly from the item number.
Still won't show up with regular searches on ebay.com , although these do with
"ncr acoustic":
https://www.ebay.com/itm/NEW-ACOUSTIC-REVIVE-RTP-4-absolute-Power-supply-bo…
Latest audiophool scam.
I couldn't find the ebay listing for the NCR
modem for some reason, either using the number or by searching by keywords.
https://www.ebay.com/itm/132411929563 
5 p.m.
New subject: Livermore Data Systems / was Re: what is this NCR modem? what did it go to?
On 2017-11-28 7:11 PM, Brent Hilpert via cctalk wrote:
On 2017-Nov-28, at 2:54 PM, Fred Cisin via cctalk
wrote:
Wow and only $2512.99 what a deal!
On Tue, 28 Nov 2017, Brent Hilpert via cctalk
wrote:
That works . . . forgot about composing the URL directly from the item number.
Still won't show up with regular searches on ebay.com , although these do with
"ncr acoustic":
https://www.ebay.com/itm/NEW-ACOUSTIC-REVIVE-RTP-4-absolute-Power-supply-bo…
Latest audiophool scam. I couldn't find the ebay listing for the NCR
modem for some reason, either using the number or by searching by keywords.
https://www.ebay.com/itm/132411929563 
3:06 p.m.
New subject: Livermore Data Systems / was Re: what is this NCR modem? what did it go to?
On Tue, Nov 28, 2017 at 3:58 PM, Brent Hilpert via cctalk <
cctalk at classiccmp.org> wrote:
Thanks for the additional datapoint.
It does suggest Model A production may likely have started in 1968.
Actual date codes in mine were 6908 to 7008.
The larger caps are also a good place to look for date codes.
I did the schematic, if you have an interest.
Eventually I'll get a little web article up for the model.
For the record, I'm not sure what model I have as the deteriorated foam
from the top cover fell and stuck to the Livermore
label between the two
cups and clean up wiped off most of the info. Mine has a
Motorola MC836P
IC on the middle board that has a date code of 7206.
2342
days inactive
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12 comments
7 participants
participants (7)
-
bhilpert＠shaw.ca -
cclist＠sydex.com -
cisin＠xenosoft.com -
COURYHOUSE＠aol.com -
phb.hfx＠gmail.com -
santo.nucifora＠gmail.com -
shumaker＠att.net