Tag Archives: syncom

Science / Space Race

[April 6, 1965] The Early Bird Catches the Worm (INTELSAT 1)

2 Comments


by Kaye Dee

Later today, the International Telecommunications Satellite Organization, better known as INTELSAT is going to launch its first satellite, INTELSAT-1, which goes by the nickname of ‘Early Bird’. This satellite is intended to be the beginning of a global satellite telecommunications network, which INTELSAT hopes to have in operation by about mid-1967.


INTELSAT aims to connect us all via satellite – starting with the US and Europe

INTELSAT: Connecting the World with Space Technology

I wrote about INTELSAT last year, when the organization was first established in August 1964, with Australia as one of its 11 founding members. Around 45 countries have now joined the INTELSAT consortium and I’m certain that the creation of a world-wide telecommunications system that offers equitable access to all nations will improve international understanding and the prospects for world peace. Satellite communications will certainly prove a boon for countries with poorly-developed internal communications networks, as well as allowing major Southern Hemisphere nations like South Africa and Australia to have more rapid connections to Britain, Europe and North America.


One of the United States' first space stamps recognised the potential for satellite communications to promote world peace

Assuming all goes well with the launch this evening, INTELSAT-1 will be placed in a geostationary orbit at 22,300 miles above the equator, east of the Brazilian coast. Once the satellite has been thoroughly checked out to be sure it’s in full working order, it will go into operation, around the beginning of June, as the first commercial satellite providing regular telecommunications and broadcasting services between North America and Europe.

Soaring to New Heights

Of course, satellite communications between the Unites States and Europe isn’t completely new: Telstar and Relay 1 both provided this service back in 1962. But both satellites were only in low Earth orbit, so they could only provide intermittent service. When Syncom 2 and 3, were launched in 1963 and ’64, respectively, these experimental spacecraft built by the Hughes Aircraft Company demonstrated the feasibility of using satellites in geosynchronous and geostationary orbit to provide a world-wide communications system. They were so successful in connecting America with countries from Japan to Nigeria, that Syncom 3 was the prototype on which Early Bird has been modelled, and you can see the similarity in design.


Syncom 3 above and Early Bird undergoing tests below

Like Syncom 3, INTELSAT-1 is spin stabilised, which is the reason for its cylindrical shape. It has two 6-Watt transponders that enable it to carry 240 two-way voice circuits and one television channel, although not simultaneously: in order to transmit television, all the telephone voice channels have to be shut down.  An important difference between the two satellites, though, is that INTELSAT-1 uses commercial rather than military frequencies for its communications to and from the ground.

INTELSAT-1 weighs just 85-lb which, amazingly for its capabilities, is less than half that of Sputnik 1’s 184 pounds. It is covered with 6,000 solar cells that generate 45 Watts of power to operate the satellite. Early Bird’s capabilities are so advanced that it will actually be more economical to operate than international undersea cables, which carry fewer channels and cost nearly 10 times as much!

Getting into Position

Early Bird is being launched by a Thrust-Augmented Delta, the same type of rocket that was used to put Syncom 3 into orbit. This vehicle, also known as the Delta D, is essentially the same as its predecessor, the Delta C, but with the addition of three Castor-1 solid rocket boosters attached to the first stage. The launch is taking place at Cape Canaveral Air Force Station Launch Complex 17A, which was also used for Syncom 3’s launch. The Delta will boost Early Bird into an elliptical orbit, taking it from 830 to 22,950 miles out in space. After 40 hours a series of delicate manoeuvres will place the satellite in its permanent orbital position.


Early Bird's launch vehicle being assembled. The Castor-1 solid boosters are being hoisted into position while the Delta rocket core waits in the background. It will soon be brought forward for mating with the boosters

Demonstrating the Future

Although it will operate as a commercial service, Early Bird will also be used to demonstrate that international satellite telecommunication is commercially viable in the long-term. While its main ground stations will be the huge horn antennae originally built for Telstar, it will also use ground stations with large parabolic ground antennae with diameters of over 85 feet, like the one at Goonhilly in England, and perhaps smaller antennae as well.


The Telstar horn antenna at Pleumeur-Bodou, France, is now being used as an INTELSAT-1 ground station

From my friends at WRE who are involved with the NASA Gemini tracking station at Carnarvon, Western Australia, I understand that if the Early Bird experience goes well, the antennae for the INTELSAT-2 satellites, that are being contracted by NASA to support the Apollo programme, will be an unusual Cassegrain feed-horn design that is already being nicknamed the “sugar scoop”! I’m fascinated to see what this antenna will actually look like, with a nickname like that!

The other thing that INTELSAT-1 will be determining is whether or not the end to end signal delay of 250 milliseconds, while the signal goes up to the satellite and returns to the ground, will be acceptable to customers. Syncom 3 demonstrated that geostationary orbit is so high that, even at the speed of light, there is a perceptible time-lag between comment and response when communicating internationally. Whether people will find this too disconcerting for use with international satellite phone calls could have a significant influence on how future communications satellite systems are developed.


240 phones for 240 conversations simultaneously carried on via Early Bird. But will people accept the time-lag that comes with geostationary satellite communications?

So, my friends in the Northern Hemisphere, enjoy the convenience of satellite telecommunication that will soon be available to you-I can’t wait for it to come to Australia as well.

We had so much success with our first episode of The Journey Show (you can watch the kinescope rerun; check local listings for details) that we're going to have another one on April 11 at 1PM PDT with The Young Traveler as the special musical guest.  As the kids say, be there or be square!

2 Comments Leave A Comment
Science / Space Race

[August 29,1964] Coming to You Live via Satellite

2 Comments


by Kaye Dee

Back in early January 1955, I was incredibly lucky to hear space promoter and science fiction writer Mr. Arthur C Clarke give a talk in Sydney about the future prospects of space activities. One of the things he discussed was the way in which satellites in Earth orbit could revolutionise communications around the world, allowing us to make phone calls or transmit television and radio virtually instantaneously from country to country. He first wrote about his ideas for global satellite communications back in 1945, especially in an article in the British radio enthusiasts’ magazine “Wireless World”. Mr. Clarke explained that three satellites, placed equidistantly around a very particular orbit, would be able to provide radio and television coverage across the world by relaying signals sent from ground stations in each country.

The first two pages of Mr. Clarke's seminal article on communications satellites. As a science fiction author, I guess he couldn't resist the title.

The special orbit that Mr. Clarke discussed is now called “geostationary orbit”: it’s 24,000 miles above the equator. Satellites in this orbit are travelling at the same speed as which the Earth rotates, and this means that they appear to be stationary above one spot on the Earth’s surface, so that they can act as a stable relay platform for radio and television signals.

From Imagination to Reality

Well now Mr. Clarke’s idea is in the process of becoming reality! Since 1962, Telstar, Relay and the Syncom 1 and 2 satellites have all transmitted telephone and television between the United States and Europe. But none of these satellites was in geostationary orbit and none of them was in a suitable position to transmit to the Southern Hemisphere. On August 19, Syncom 3, the latest in the series, was launched —and it is going to become the world’s first geostationary communications satellite! Right now, it’s manoeuvring from its initial elliptical orbit up into its final geostationary orbit, which it is due to reach by late September — just in time to broadcast the Tokyo Olympic Games to you in the Northern Hemisphere. Unfortunately, we here Down Under will miss out again this time, but hopefully not for too much longer….


The Syncom 3 geostationary satellite. Soon it will be bringing you the Tokyo Olympics live – if you live in the Northern Hemisphere

Introducing INTELSAT

Just a few days ago, on August 24, Australia formally became a founding member of the International Telecommunications Satellite Organization, which is going to be known as INTELSAT for short. INTELSAT is a revolutionary idea: an intergovernmental consortium that will develop, own and manage a global geostationary satellite communications network to provide international broadcast services. Member nations will contribute to the cost of establishing, operating and maintaining the satellite system, but they’ll get a return for that investment through the revenue generated from satellite usage fees. The really great aspect of INTELSAT is that its services will be open to any nation to use and everyone will pay the same rates. This is an important policy because it means that Third World countries will be able to afford to have access to satellite communications and be connected to the world.

In my May item on rocket mail, I mentioned how important satellite communications could be to Australia. The big difference is that it will really reduce our isolation from the rest of the world. Right now, if something major happens overseas, it’s going to be two or three days at least before we can see any film footage about it on television or in the newsreels. With satellites, we could see things the same day they happen! Satellites will also make it easier for us to communicate within Australia — we’ve got a very big country with a very small population, and there are a lot of parts of the Australia where it’s difficult or just too expensive to provide telephone connections and television service.

A Presidential Proposal

The late President Kennedy first proposed the idea that has become INTELSAT in a speech to the United Nations in 1961.


When President Kennedy addressed the United Nations in September 1961, he proposed a global satellite communications system – and international research into weather control.

He even signed the Communications Satellite Act in 1962 to help bring it into being. That Act created the Communications Satellite Corporation, which calls itself COMSAT, as a private corporation to represent the United States in the international governance for INTELSAT, where most other countries are represented by their national telecommunications carriers: Australia, for example, will be represented by the Overseas Telecommunications Commission (OTC), which has been our telecommunications agency since 1946. In addition to Australia, seven other countries have joined together to establish INTELSAT, and several more nations will become members soon, once their governments have enacted the necessary legislation.

Mrs O’Donahue Saves the Day!

INTELSAT plans to launch its first its first satellite in the first half of next year. Interestingly, I have heard that NASA is thinking of using INTELSAT satellites to provide communications links with its tracking stations around the world for the Apollo Moon programme. Actually, a recent incident at the NASA Carnarvon Tracking Station in Western Australia may have helped to give them the idea. Back in April, the Manned Space Flight Network station in Carnarvon suffered a major loss of communications just minutes before it was due to support the uncrewed Gemini 1 mission.


Gemini 1 launched successfully, but one of NASA's main tracking stations for the mission almost wasn't operational!

A lightning strike destroyed the telephone lines between Carnarvon and the town of Mullewa, which was the tracking station’s only connection to Perth and the overseas cables that carried data to and from America.

Luckily, an alternative route along an obsolete section of an old pole-top phone line was improvised. Information from NASA, relayed via Perth, was sent to along this line to the tiny settlement of Hamelin Pool. Mrs. O’Donahue, the postmistress there, then read the data figures down the temporary line to the Carnarvon telephone exchange for more than two hours! After this near-catastrophe, it’s no wonder NASA is looking for a more reliable means of communication with Carnarvon!


Here's a woman who never thought she'd be saving NASA's bacon: Mrs. O'Donahue, the postmistress at Hamlin Pool

If NASA goes ahead with its plan to use communications satellites for its Apollo communications network, I guess OTC will be establishing Australia’s first satellite ground station in Carnarvon, to keep the NASA station in contact with the United States. I can’t wait to see the first live satellite broadcasts to and from Australia.

And if I can call my Scottish cousins directly via satellite, that’s going to be a slice of science fiction become reality!

[Come join us at Portal 55, Galactic Journey's real-time lounge! Talk about your favorite SFF, chat with the Traveler and co., relax, sit a spell…]




2 Comments Leave A Comment
Science / Space Race

[August 29, 1963] Why we fly (August Space Round-up)

1 Comment


by Gideon Marcus

We've become a bit spoiled of late, what with space spectaculars occurring on a fairly regular basis.  So, I was not too surprised when a friend buttonholed me the other day and exclaimed, "When is the Space Race gonna get interesting again?"  After all, it's been a whole two months since the Vostok missions, three since the last Mercury mission, and even satellite launches have been few lately.

Oh ye of little faith.  The real work doesn't happen when the rockets go up, but after their payloads are aloft.  A lot happened in the arena of space this month — you just have to dig a little to learn about it.  Here are the exciting tidbits I gleaned (and the journos missed) in NASA's recent bulletins and broadcasts:

Bridging the Continents

Communication satellites continue to make our world a smaller place.  Syncom, built by Hughes and launched by NASA late last month, is the first comsat to have a 24-hour orbit.  From our perspective on the Earth's surface, it appears to do figure eights around one spot in the sky rather than circling the Earth.  This means Syncom can be a permanent relay station between the hemispheres.

It's already being used.  On August 4 the satellite allowed Nigerian journalists and folks from two U.S. services to exchange news stories as well as pictures of President Kennedy and Nigerian Governor General Dr. Nnamdi Zikiwe.  Five days later, voice and teletype was exchanged between Paso Robles, California and Lagos, Nigeria.  This 7,700 mile conversation represents the longest range real-time communication ever made.

And, on the 23rd, Syncom carried its first live telephone conversation — between President Kennedy and Nigerian Prime Minister Sir Abubaker Tafawa Balewa, as well as several other official conversations.  One has to wonder if the whole scheme wasn't hatched just so Jack could expand his pen pal list to West Africa…

More comsat news: RCA's Relay 1 is still alive and kicking, having been used in 930 wideband experiments, 409 narrowband transmissions, and 95 demos of TV and narrowband broadcasts.  And in a stunning imitation of Lazarus, AT&T's Telstar 2 came back on-line after having been silent since July 16.  I understand there will be an unprecedented experiment next month: NASA is going to use Relay and Syncom to bounce a message from Brazil to Africa.  Expect that kind of satellite ping-pong to become common in the future.

Finally, NASA's passive comsat, Echo 1, continues to be used for tests.  Come winter, it will be joined by Echo 2.  Because if there's anything space needs, it's more balloons.


First pass of Echo 1 satellite over the Goldstone

Predicting the Weather

Mariner 2, the Venus probe that encountered the Planet of Love last December, went silent early this year.  Yet its reams of data are still yielding discoveries.  During the spacecraft's long flight toward the sun, it took continuous measurements of the solar wind — that endless stream of charged particles cast off from the roiling fusion reactor of our nearest star.  These measurements were then compared to readings made on Earth and in orbit.  Scientists have now determined that the sun's radioactive breeze blows in gusts from 500 to 1350 kilometers per second, the bursts correlated with expansions in the solar corona.  When a particularly strong stream of electrons and protons, sizzling at a temperature of 500,000 degrees F., slams into the Earth's magnetic field, it causes disruptions in broadcasts and communications.

Closer to home, Explorer 12 soared far from Earth in its highly eccentric orbit, charting long-lived solar plasma streams in interplanetary space.  The satellite determined that these gouts of plasma caused geophysical disturbances more than twenty days after their creation.

One can imagine a constellation of satellites being deployed to provide solar system-wide space weather reports.  Not only would they help keep astronauts safe as they journeyed from planet to planet, but they'd also let radio operators on Earth know when to expect static in their broadcasts.

And speaking of weather forecasts, Tiros 6 and 7 continue to be our eyes in the sky, tirelessly shooting TV of Earth's weather.  They've already tracked the first hurricane of the season, Arlene.  Who knows how many lives and dollars they will save with their early warnings?

Previews of Coming Attractions

The ill-starred lunar probe, Ranger, has failed in all five of its missions.  In fact, NASA is 0 for 8 when it comes to moon shots since 1959.  Perhaps Ranger 6, set for launch around Thanksgiving, will break this losing streak.  It will be the first of the Block 3 Rangers, lacking the sky science experiments that flew on Rangers 1 and 2, and the big seismic impactors carried on Rangers 3-5.  The new Rangers will just shoot TV pictures of potential Apollo landing sites.  This sacrifice of science in deference to the human mission has not gone without protest, but given the dismal track record of the program, the labcoat crowd will have to take what they can get.

A full year after Ranger (hopefully) reaches the Moon, a pair of Mariners will set sail for Mars.  Unlike last year's Mariner 2, Mariners 3 and 4 will carry cameras to provide our first close-up view of the Red Planet.  Let's just hope neither of these upcoming probes meet the same fate as Russia's Mars 1, which died last March.

At some point in the mid-60s, even bigger Mariners will fly to the planets, carried by the big liquid oxygen "Centaur" second-stage.  The first successful test fire took place on August 17 just down the way from my house — at General Dynamics/Astronautics San Diego

And finally, another 271 space candidates applied to NASA this year.  They have been screened to 30, and out of them, 10-15 will be selected in late October to comprise the third group of astronauts.  None of them are women yet, but perhaps there will be some in time for Group Four.


Pilots Jerrie Cobb and Jane Hart testify before the Subcommittee of the House Committee on Science and Astronautics, July 1962.  That's an Atlas Centaur model next to them.

Who knows?  Maybe you'll be one of them!

[Want to talk to the Journey crew and fellow fans in real-time?  Come join us at Portal 55! (Ed.)]

1 Comment Leave A Comment