21 Nov
2006
21 Nov
'06
4:37 p.m.
Photos:
<http://www.govliquidation.com/aucimg/photos/2896/2895309.jpg>
<http://www.govliquidation.com/aucimg/photos/2896/2895310.jpg>
Lot:
<http://cgi.govliquidation.com/auction/view?id=1045428&categoryId=1004>
That fuzzy red thing in the photo is a plastic 1 foot ruler.
Any ideas?
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"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
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Legalize Adulthood! <http://blogs.xmission.com/legalize/>
9:37 a.m.
In article <e1d20d630611220916p71efa8e2h4963ffefa70caa06 at mail.gmail.com>,
"William Donzelli" <wdonzelli at gmail.com> writes:
Hm! I should have looked at the item detail to scrape that out myself
:-). I'm so used to those "more detail" links being bogus that I've
kinda got out of the habit of looking at them.
So, googling for AN/UGC-74 seems to imply that this is a "secure
teletype". It purports to talk Baudot code as well as ASCII. Does
anyone have any idea what makes it "secure"?
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
Any ideas?
AN/UGC-74. 
10:54 a.m.
Hi,
Richard said:
In article <e1d20d630611220916p71efa8e2h4963ffefa70caa06 at mail.gmail.com>,
"William Donzelli" <wdonzelli at gmail.com> writes:
Hm! I should have looked at the item detail to scrape that out myself
:-). I'm so used to those "more detail" links being bogus that I've
kinda got out of the habit of looking at them.
So, googling for AN/UGC-74 seems to imply that this is a "secure
teletype". It purports to talk Baudot code as well as ASCII. Does
anyone have any idea what makes it "secure"?
The only "secure" feature I can find in the info I have is that "imminent
memory overflow causes the printer to output memory contents automatically.
Normal message output is under the control of the operator"
Supports ASCII (ITA5) and Baudot (ITA2).
ASCII at 75 to 2400 baud
Baudot 45.5, 50 and 75 baud.
Memory 32000 chars expandable to 128,000 with bubble memory.
26V dc or 115/230V ac.
Mfr. : Honeywell, about 12000 produced for US, Australian, Canadian and
Greek armed forces.
--
Cheers,
Stan Barr stanb at dial.pipex.com
The future was never like this!
Any
ideas?
AN/UGC-74.
12:10 p.m.
In article <200611221854.SAA03722 at citadel.metropolis.local>,
Stan Barr <stanb at dial.pipex.com> writes:
The only "secure" feature I can find in the
info I have is that "imminent
memory overflow causes the printer to output memory contents automatically.
Normal message output is under the control of the operator"
Supports ASCII (ITA5) and Baudot (ITA2).
ASCII at 75 to 2400 baud
Baudot 45.5, 50 and 75 baud.
Memory 32000 chars expandable to 128,000 with bubble memory.
26V dc or 115/230V ac.
Mfr. : Honeywell, about 12000 produced for US, Australian, Canadian and
Greek armed forces.
Stan, where did you find this info? I couldn't find anything listing
the supported baud rates on my searches.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
23 Nov
23 Nov
1:05 a.m.
Hi,
Richard said:
In article <200611221854.SAA03722 at citadel.metropolis.local>,
Stan Barr <stanb at dial.pipex.com> writes:
[Info re: AN/UGC-74]
Stan, where did you find this info? I couldn't find anything listing
the supported baud rates on my searches.
Jane's "Military Communications" 1989, an invaluable, if expensive
source of brief info. (Although used-book stores are a good source
of this sort of thing, That's where I got mine, and Jane's "Avionics
1987-89")
It's rather a short entry, but the main points are:
Roll or fanfold sprocketed paper, including multi-part.
Line length programmable from 40 to 132 chars.
Character set and control characters for standard MIL-STD-1280 Class 1,
Type 1 keyboard.
Signals can be "conditioned diphase or NRZ high and low level"
ASCII 75, 150, 300, 600, 1200 and 2400 baud
Baudot 45.5, 50 and 75 baud
Messages can be editied and stored in memory for transmission at a
later time.
and that's pretty much all it says.
HTH.
--
Cheers,
Stan Barr stanb at dial.pipex.com
The future was never like this!
22 Nov
22 Nov
11:50 a.m.
On Wed, 2006-11-22 at 10:37 -0700, Richard wrote:
So, googling for AN/UGC-74 seems to imply that this is
a "secure
teletype". It purports to talk Baudot code as well as ASCII. Does
anyone have any idea what makes it "secure"?
Yes. All video devices leak electromagnetic radiation. With the
proper equipment, a spy with a big budget can "read" the screen of a
computer in another room by the RF energy it puts out. A project called
"Tempest" produces terminals (or computers, or hybrids) which are
electronically shielded so well that the NSA's equipment cannot spy on
them.
I worked for a company that produced this kind of equipment,
although NOT the militarized version with the Army/Navy designation you
mention above. The bear of it is that the spec's you must meet are
classified at just about the most restrictive level there is. It's
called "read and commit suicide," or something. So, you take a shot at
it, and send in a prototype. You get back a "Yes" or a "No" as to
whether the prototype makes the grade, and no other information. If no,
keep trying 'til you run out of money. It's risky, but BOY does the
government pay a bundle for them when you get a prototype that works.
They also want a LOT of them. So, various companies keep trying, and
strike it rich if they happen to make one that works, or waste a metric
buttload of cash making prototypes that leak too much RF.
Peace,
Warren E. Wolfe
wizard at voyager.net
6604
days inactive
6605
days old
6 comments
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