I live in Middletown NJ and hike frequently in the former Highlands AFS, now known as Hartshorne Wood Park. I'd like to get in touch with John Corbett. Does...
25250
David
wb8foz@...
Jul 26, 2012 5:46 am
but post Coldwar, I'd say. Some flavor of channel bank, I think. <https://secure.flickr.com/photos/fraveydank/7647831056/in/set-72157630754621502/> It's up 270...
25251
ozob99
Jul 26, 2012 12:02 pm
Right, D4, used mainly on T1 & other digital lines....
... some sort of SLC 96 ("slick") would be my guess the units on top look like csu/dsu-ish things I used to have a lot of that stuff (if it was SLC) in my...
25255
charlie Fargis
ucfargis1
Jul 26, 2012 12:43 pm
"DS0 CP" 56KB digital interface for one 64KBPS DS1(T1) facility. Before pindrop AT&T stuffed together a D4 no E&M signalling card and a A7 L carrier channel...
25256
Walt Heilsnis - WB2VSJ
wb2vsj
Jul 26, 2012 4:42 pm
Agree on it being a SLC-96. Those were pretty stout units. Basically a T1 to each shelf with an optional protection T1. We at Nortel built similar units in...
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Thomas Grant
modemtone
Jul 27, 2012 3:13 am
Looks like Digital Data Service type channel units, DS0 "Data Ports" [Non-text portions of this message have been removed]...
25258
COURYHOUSE@...
couryhousesmecc
Jul 27, 2012 4:48 pm
We are a bit scarce as this month we buried on a Teletype for other uses display building project. As many of you know, Teletypes were used by the...
25259
ozob99
Jul 28, 2012 5:13 pm
A 1960 report covering several comms apps: http://www.dtic.mil/cgi-bin/GetTRDoc?AD=AD0319561&Location=U2&doc=GetTRDoc.pdf...
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Kris Kirby
ke4ahr
Jul 30, 2012 11:01 am
I was thinking the other day about the similarities between acoustics and microwaves... I realized the AT&T Horn would make a heck of a subwoofer. Of course,...
25261
Craig Scott
dredmlm
Jul 30, 2012 11:47 am
very nice! kinda like the old Cerwin-Vega "Earthquake" subs.... Dred Watervliet NY ________________________________ From: Kris Kirby <kris@...> To:...
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charlie
ucfargis1
Jul 30, 2012 5:02 pm
you will be pleased to note that in college field theory/transmission line is transmission line waveguide, coax, fiber, air have much similarity and similar...
25263
COURYHOUSE@...
couryhousesmecc
Jul 30, 2012 7:29 pm
_http://www.gizmag.com/fitsat-1-morse-code-satellite/23482/_ (http://www.gizmag.com/fitsat-1-morse-code-satellite/23482/) amazing,,,, maybe visible to the...
25264
lasertower
Jul 30, 2012 8:31 pm
... Not only subwoofer, but midrange, its been done, and I worked for the company that did it. Cant say more due to NDA, but very, very, loud. Steve...
25265
Pj
packy41
Jul 30, 2012 8:42 pm
Hmmm. This could be fun on my 40 acres of open range land to play with :) Sent from my iPhone...
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Steve
Steve_61826
Jul 30, 2012 9:27 pm
For at least 40 years, a few of us guys with FCC licenses, who are also cat lovers, have noticed the similarities of the cat's ear and a Bell system microwave...
25267
David
wb8foz@...
Jul 30, 2012 9:35 pm
... And the resulting purr is at 70Mhz?...
25268
paul125a
Jul 31, 2012 1:17 pm
See the attached 3D animation of the Telstar Horn at Pleumeur-Bodoou, France: http://telstar50.org/3d_models.html...
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David
wb8foz@...
Jul 31, 2012 4:54 pm
A friend spotted a K Hut along the Ohio Turnpike: 13741 County Rd H. <http://toolserver.org/~geohack/geohack.php?params=41_35.2882__N_84_07.8526__w> He reports...
25270
widebandit
Jul 31, 2012 5:43 pm
I was thinking the other day that two Horn-Reflectors with weather covers removed, lying on their sides and properly aimed at each other across an open field,...
25271
lasertower
Jul 31, 2012 6:04 pm
Oh, it gets fun. Take the horn, rotate about its axis in a Cad program, copy and paste many times. Add acoustic driver(s), tweek shapes based on field...
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Tom Scanlan
radargeek247
Jul 31, 2012 6:26 pm
Then there was the drunk who wandered between your two horns.....he was on a Beam Bender. yuk yuk ... From: widebandit <widebandit@...> To: coldwarcomms...
25273
Kris Kirby
ke4ahr
Jul 31, 2012 7:36 pm
... The multi-cellular horn has been around since the 1970s. But a pair of horns driven from a decent set of drivers would make a nice 'little' stereo. ;) -- ...
25274
Craig Scott
dredmlm
Jul 31, 2012 8:21 pm
and goes on tour with the Grateful Dead! Dred Watervliet NY ________________________________ From: lasertower <osr@...> To: coldwarcomms@yahoogroups.com ...
25275
lasertower
Aug 1, 2012 5:21 pm
Try Greater then 138 dB(acoustic) at greater then 100 meters for the Midrange one. Steve...
25276
Craig Scott
dredmlm
Aug 1, 2012 5:29 pm
WOW! That IS pretty amazing! Just tough to transport! Dred Watervliet NY ________________________________ From: lasertower <osr@...> To:...
25277
ozob99
Aug 1, 2012 9:38 pm
Snippet from: http://www.afhso.af.mil/shared/media/document/AFD-110321-043.pdf (previously posted under another URL) "The services(military) owned or leased...
25278
Kris Kirby
ke4ahr
Aug 2, 2012 12:26 am
... Sounds like a good portable ear. -- Kris Kirby, KE4AHR Disinformation Analyst...
