Hi,
Phase startable oscillator a great invention. Do you know any papers that
implement this idea into newer technology (e.g. ASIC)? I am actually
thinking of realizing a project that would base on the Chu's invention but
will have better jitter parameters. Do you have any comments or experience
on
On 10/07/2010 09:34 AM, Piotr Swietochowski wrote:
Hi,
Phase startable oscillator a great invention. Do you know any papers that
implement this idea into newer technology (e.g. ASIC)? I am actually
thinking of realizing a project that would base on the Chu's invention but
will have better jitter
Hi
The one thing that an alternator system had available was *power*. They are
fairly efficient and you put lots of horsepower into them. Numbers in the 100's
of KW come to mind
What we're talking about here is more or less a page from the history of radio
in the early 1900's. People that
Bob Camp wrote:
Hi
The one thing that an alternator system had available was *power*. They are
fairly efficient and you put lots of horsepower into them. Numbers in the 100's
of KW come to mind
What we're talking about here is more or less a page from the history of radio in the
early 19
Telstar was a BIG DEAL! There was even a pop song about it.
-John
> I was surprised to see how late it was before the first *wired*
> transatlantic phone call was made: 1956 ($12/3 minutes, 36 lines
> available). the first Telstar call wasn't that much later in 1962.
>
>
> ___
found in an old pile of stuff:
Hammarlund TM700-A Secondary Frequency Standard
Operating Instructions
7 pages and a cover letter.
Free, if anyone wants it.
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On 10/07/10 17:09, J. Forster wrote:
Telstar was a BIG DEAL! There was even a pop song about it.
Reading the Bell labs books on the Telstar project is very nice. Nice
fold-outs on control-panels etc.
They did spent a lot of time to engineer the whole thing. Their antenna
setups that would t
And an Astounding Science Fiction novella --the trouble with telstar--
Don
- Original Message -
From: "Magnus Danielson"
To:
Sent: Thursday, October 07, 2010 2:16 PM
Subject: Re: [time-nuts] 60 KHz Receiver
On 10/07/10 17:09, J. Forster wrote:
Telstar was a BIG DEAL! There was eve
Could you tell me which book you have on mind ? I'd love to read the story.
I visited Telstar ground station in Pleumeur-Bodou, France once. There
is museum
there now, called "Cite des Telecoms". They preserved original
horn-like antenna
used for Telstar communication and lots of original equipmen
There was / is? a ground station near Andover Massachusetts also. The
antenna was called a Hogg Horn.
-John
===
> Could you tell me which book you have on mind ? I'd love to read the
> story.
>
> I visited Telstar ground station in Pleumeur-Bodou, France once. There
> is museum
> the
Telstar ... now that brings back memories. Whenever it was
within range, they would interrupt TV broadcasts and show
whatever was being relayed (poor choice of word, I know).
I used to leave the TV on just to catch whatever they had on.
One afternoon, while I was in another room, I heard a switc
Hi Magnus its was a pity they didn't manage to communicate with some of my
office collegues so as to to confirm the "hand" of the polarisation they
were using though :-)) Goodhilly changed the feed for the other polarisation
on the day of the first test, and it was a bit of a TV disaster. Lanion ha
Long long gone completely though I think a plack is there. It was on
chronicle several years ago.
On Thu, Oct 7, 2010 at 6:02 PM, J. Forster wrote:
> There was / is? a ground station near Andover Massachusetts also. The
> antenna was called a Hogg Horn.
>
> -John
>
> ===
>
> > Could
j...@quik.com said:
> There was / is? a ground station near Andover Massachusetts also. The
> antenna was called a Hogg Horn.
Andover Massachusetts or Andover Maine?
http://en.wikipedia.org/wiki/Andover_Earth_Station
Hogg seems to be the guy (or main guy) who put a parabolic reflector on a
h
And I have sitting on my desk of the hand made (at Bell Labs) klystron local
oscillators used in the FM-FDM equipment at Andover
Lester B Veenstra MØYCM K1YCM
les...@veenstras.com
m0...@veenstras.com
k1...@veenstras.com
US Postal Address:
PSC 45 Box 781
APO AE 09468 USA
UK Postal Address:
And at Andover, Comsat took it all down and cut it up to save taxes rather
than save history.
Lester B Veenstra MØYCM K1YCM
les...@veenstras.com
m0...@veenstras.com
k1...@veenstras.com
US Postal Address:
PSC 45 Box 781
APO AE 09468 USA
UK Postal Address:
Dawn Cottage
Norwood, Harrogate
HG
No, Andover Maine.
Hogg horn (very low sidelobes) was built by Bell Labs for Andover Maine and
PB, France. The English, being English, had to design and build their own
antenna at Goonhilly. They got the circular polarity wrong so missed the
first linkup, while the French were in solid.
Les
That's the same short-sighted, profit is king mentality
that resulted in the demolition of the Metropolitan Opera's
"Old House". So much history in that building, just bull-
dozed for an office building (or some such).
73, Dick, W1KSZ
-Original Message-
>From: Lester Veenstra
>Sent:
Far as I know the telstar station was in andiver maine.
Believe my bell labs journals confirm that.
Additionally those journals describe all kinds of details of the telstar
program.
On Thu, Oct 7, 2010 at 7:39 PM, Lester Veenstra wrote:
> No, Andover Maine.
>
> Hogg horn (very low sidelobes) was
On 10/08/2010 02:08 AM, paul swed wrote:
Far as I know the telstar station was in andiver maine.
Believe my bell labs journals confirm that.
Additionally those journals describe all kinds of details of the telstar
program.
Being Bell Labs they included some long-term radiation tests of
semicon
I visited Pleumeur Baudou shortly after it opened, my father was an engineer
with the French Telecom ministry (PTT at the time) and he knew people there. I
remember the gigantic offset horn and the maser amplifier. Too bad I do not
have pictures from this event.
Didier
Sent from my Verizon Wi
Saw this interesting article several years ago about using an 18 inch dish
pointed at a WAAS satellite:
http://www.freqelec.com/gps_gnss/waas_for_telecom_wp_5-06.pdf
-Bob
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Oops. I didn't know there was an Andover ME.
Thanks,
-John
===
>
> j...@quik.com said:
>> There was / is? a ground station near Andover Massachusetts also. The
>> antenna was called a Hogg Horn.
>
> Andover Massachusetts or Andover Maine?
>
> http://en.wikipedia.org/wiki/Andover_Ea
http://adsabs.harvard.edu/full/1963NASSP..32.2167W
-John
=
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I presented a similar talk at the May 4, 2003 meeting of AMSAT-DC. I added
the fact that a codeless GPS receiver could remove the bi-phase modulation
and yield a CW carrier for frequency standard applications. Amateur radio
at the forefront, again. After a recent move, I am in the process of
On 10/08/2010 03:02 AM, Robert Harmon wrote:
Saw this interesting article several years ago about using an 18 inch dish
pointed at a WAAS satellite:
http://www.freqelec.com/gps_gnss/waas_for_telecom_wp_5-06.pdf
Notice footnote 12 (on page 9).
Will not a standard GPS antenna have the wrong cir
You are correct. The dish feed should be LHC. The feed would work for WAAS
or other GPS satellites while in the beam pattern, but reject satellites
seen through spill over, etc.
John WA4WDL
--
From: "Magnus Danielson"
Sent: Thursday, October 0
When I said the feed would work, I was meaning it would work if LHC. The
illustrations and text imply you could just place a normal GPS receiver at
the feed location, but the polarization would be wrong.
John WA4WDL
--
From: "jmfranke"
Sent: T
In another paper, at the FEI web site, the author emphasizes that he did not
change the polarization, but did see a 12 dB gain with the dish. There is
even a nice image with a typical timing GPS antenna mounted at the feed
slide 27 in
http://www.frequencyelectronics.com/gps_gnss/waas_for_telec
Indeed its a common mistake that everyone thinks its ma.
Andover me was chosen because its was miles from any place and was in a hole
essentially.
They strung microwave towers to the place.
On Thu, Oct 7, 2010 at 9:06 PM, J. Forster wrote:
> Oops. I didn't know there was an Andover ME.
>
> Thank
List,
Wrote https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
How much history was lost when whatever stood before the "Old House"
was demolished and bull dozed so that an Opera house (or some such)
could be built?
We are all nostalgic about the past, but doesn't the future deserve
to be born?
-Chuck Harris
Richard W. Solomon wrote:
That's the same short
Perry Sandeen wrote:
List,
Wrote
Not so.
A turning point of the frequency vs temperature curve is a location
where the the tempco is zero.
It may be located at a maximum, at a minimum or at a point of inflection.
Semantics aside, I believe that they do have a turning point that is
selected
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