| Telstar, A History By John R. Pierce
 Telstar, A History. By John R. Piercefrom SMEC Vintage Electrics 1990
 
 At the time of Echo and Telstar, Frederick Kappel, a large, determined,
      direct and good-natured man was Chairman of the Board of AT&T. I had
      first met Kappel a few years earlier, when he was president of Western
      Electric.
 At that time work on psychology and related matters
      was in my division. Someone at AT&T doubted that this was a useful
      field of research for Bell Labs. Fred Kappel was appointed head of a
      committee that spent three days with us investigating the matter. He and
      the others listened to a sequence of presentations and talked with us.
      There must have been a favorable report, for work on psychology continued. I saw Kappel occasionally after that. Sometimes it
      was at the annual "Cabinet" meetings, held for a few days at
      some quiet, remote location, which all executive directors and those of
      higher rank attended. One meeting I do remember very distinctly. I
      encountered Kappel in the halls of the Murray Hill laboratories. He
      stopped me and said with a broad smile, "Look what you've got me
      into, John." What I had got him into was giving enthusiastic talks
      about satellite communication. Echo had created a sensation in the nation, and
      within the Bell System as well. The public relations department had made
      of it everything they could; indeed, someone said that they had
      "taken it away from NASA". Everyone was convinced that satellite
      communication would be a part of the Bell System's future, and that the
      next step would be to launch an active satellite. In the research department we had started work toward
      an active satellite at a modest level even before the launch of Echo. This
      work followed a satellite design set down by Roy Tillotson on August 24,
      1959. The proposed satellite would have been at an altitude of 2,500
      miles. It would have had an essentially omnidirectional radiation pattern,
      and would have had a transmitter power of one watt. The plan was to use
      broad-band frequency modulation, with a hundred-megahertz bandwidth. This
      would allow the transmission of one TV channel or of several hundred
      telephone channels. When, much later, I showed Tillotson's Memorandum to a
      man in the development area during work on Telstar, he was surprised at
      how close the satellite Tillotson had designed was to Telstar itself. The research department of Bell Laboratories was
      small, around a tenth of the whole Laboratories, and those who could
      devote their time to satellite work were few. The enthusiasm for producing
      an effective active satellite was great. In the summer of 1960 the primary
      responsibility for an active satellite experiment was transferred to one
      of the vice-presidential areas of development, headed by McDavitt, a calm
      and able man. A. C. Dickieson was the executive director of the division
      responsible for the work, and Gene (E. F.) O'Neill was the project
      engineer for what became Telstar. Telstar involved problems of a scope and magnitude
      far beyond any we had faced in Echo. The transistor and the
      Pierce, Cont.
 traveling-wave tube were key components, but they had to survive a rocket
      launch and survive for a long time in space. The space background that the
      Whippany laboratories had acquired through their military work,
      especially, work on the Nike missile, was invaluable to Telstar.
 Because of past relations with the Bell System,
      including participation in transatlantic telephone cable projects, the
      British and French telephone organizations (government operated) were
      anxious to cooperate. Indeed, they eventually built at their own expense
      earth stations which received and transmitted the first transatlantic
      television programs sent via Telstar. In its many departments with a wide range of
      expertise, Bell Laboratories had the technology and manpower needed to
      build a reliable active satellite. AT&T was anxious to provide the
      funds, and could make arrangements with foreign telephone administrations.
      The sticky problem was to find a way to get an active satellite launched. NASA was the obvious source of a launch vehicle. On
      November 4, 1958 a group of Bell Laboratories people visited NASA
      headquarters in Washington. I was there chiefly because of my work on
      Echo. The other Bell Laboratories people included, I believe, Julius
      Molnar, executive vice president of Bell Labs, and people from the
      development department. We had what seemed to me at the time a very friendly
      talk with Hugh L. Dryden, then deputy administrator of NASA, Robert
      Seamans, Jr., associate administrator, and Leonard Jaffe, director of
      communications systems at NASA. Jaffe was the man we had dealt with in the
      Echo project. I had known Dryden for some time through the National
      Academy of Sciences; I think that he was Home Secretary at that time. I
      believe that Seamans was new to me, though I have come to know him well
      since. At this meeting we were told that NASA planned to
      contract for its own experimental satellite (Relay), and we gathered that
      it would be a good idea to bid on Relay, even though AT&T was prepared
      to bear the full cost of the satellite and the launching. Naively, I told my Bell Laboratories colleagues,
      "They're trying to help us," and I urged bidding on the NASA
      project. But, why should NASA try to help Bell Labs? The responsibility of
      NASA was NASA. Also, Bell Labs had got more credit for Echo than NASA
      itself had. Dryden was a wonderful man, and so is Seamans. Bidding on
      Relay may have been a good idea. My conviction that NASA was primarily
      "trying to help us" was naive. Various companies came forward with proposals for
      launching the AT&T satellite for a fee, but NASA really controlled the
      boosters. Thus, when a request for a proposal on Relay was finally
      received on January 4, 1961, AT&T decided to bid on it, even though
      this meant a substantial change in plans in order to meet NASA
      specifications, including a change in the microwave frequencies to be
      used. AT&T put in its bid on Relay on March 20, 1961. On May 18 it was
      announced that the contract had gone to RCA (Radio Corporation of
      America). Choosingamong piles of paper is tricky. Relay was built and launched after Telstar,
      and so received comparatively little notice. In my judgment, it was
      inferior to Telstar in design and construction.
 AT&T was firmly committed to carrying Telstar
      through, but how to get it launched? When V. S. Chernov of the Lebedev
      Institute in Moscow visited Bell Laboratories in April of 1961, Rudi
      Kompfner and I asked if we couldn't get a Soviet booster to launch Telstar.
      He said that he considered the idea impractical. He himself couldn't even
      take a skindiving outfit back to the Soviet Union from the United States. A very senior Bell Labs man visited an Air Force
      installation (I forget which one), with the idea that the Air Force might
      supply a launch vehicle. He was told that they already had the
      communication satellite problem well in hand-they had devised a scheme by
      means of which two satellites could be nested together and launched at the
      same time. This at a time when designing and building a satellite that
      would have a high probability of surviving and functioning in space was
      the major problem! Some of the most competent and astute technical men I
      have met have been Air Force officers, but the Air Force also has its
      dreamers who confuse sketches and the encouragement of those in the
      aerospace industry with reality. Unfortunately, the Bell Labs man was
      taken in for the moment. Nothing came of this but criticism by outsiders
      who knew better. Negotiations with NASA continued, though I knew
      nothing of the details. Finally, on July 27, 1961 NASA agreed to supply,
      AT&T with a booster. The price was $3.5 million per launch, a
      worldwide license to use all inventions in the satellite field made during
      the course of the work, and a right to license anyone else to use these
      inventions. We felt quite confident that Telstar would succeed. The
      Western Electric guidance equipment that was used had been successful in
      many launchings. There was more experience with the Thor Delta booster
      (later called the Delta vehicle) than there had been when Echo was
      launched. We felt sure that the satellite would function properly in
      orbit. On the evening of July 10, 1962 there were reporters
      and guests at Cape Canaveral (now Cape Kennedy), at Andover, Maine, where
      a new ground terminal had been built, in Washington, D.C., and at Crawford
      Hill, where various research department people, myself included, were
      ready to view Telstar transmissions using the old Echo receiving terminal.
      And, the English terminal at Goonhilly Downs and the French terminal at
      Pleumeur Badeau were ready and waiting. With two exceptions, everything worked perfectly. One
      was a little trouble with transmission on the ground. The other was that
      the British definition of right-hand and lefthand polarization was
      contrary to that used by the rest of the world. Initially their ground
      station was set up to receive the wrong polariza
      Pierce, Cont.
 tion. Transmission between France and the United States was excellent.
      Care in planning and construction had insured success.
 The confusion about polarization was soon corrected.
      On July 23, transmission via Telstar gave the world its very first live
      international television program. Viewers in the United States and Europe
      saw pickups from Britain, France and the US. A US Information Agency poll
      showed that in the weeks after this event, 82% of the people in Britain
      could identify Telstar by name, 79% knew that it was an American
      achievement and 59% had seen the program beamed from the United States. In
      a message broadcast to the people of the Commonwealth on Christmas day,
      1962, Queen Elizabeth referred to Telstar as "the invisible focus of
      a million eyes." In the view of AT&T and the telephone
      administrations of Britain and France, Telstar was a first successful step
      to an early commercial satellite link between the United States and
      Europe. A higher power intervened. On August 31, 1962 Congress passed, and
      the president signed, the Communications Satellite Act, which gave a new
      organization, COMSAT (Communications Satellite Corporation) an eternal
      monopoly of United States participation in international communication
      satellite transmission. The Communication Satellite Act legislated the Bell
      System out of international satellite communication. AT&T eventually
      entered domestic satellite communication, which the Act did not cover. The
      Act legislated me out of satellite work abruptly and finally. This made me
      feel awful. Satellite communication was an interlude in my
      technical life. Its roots were as much in my science-fiction background as
      in my earlier work at Bell Labs, though my research on traveling-wave
      tubes was important to Telstar and subsequent active satellites, and the
      Holmdel Laboratory, which was in my division, provided just the sort of
      expertise necessary to Echo and some aspects of Telstar. My work on satellites led to speaking engagements,
      honorary degrees and various awards. Yet the years of my active concern
      were few. Despite the fact that I talked and wrote about satellites in
      1954 and 1955, I would date my actual participation in satellite work from
      the launch of Sputnik on October 4, 1957 to the passage of the
      Communications Satellite Act on August 1, 1962. Though I have told almost everything about my direct
      involvement, I find that I can't leave the subject without saying
      something more. Commercial satellite communication came into being
      with the launching by COMSAT of Intelsat 1, or Early Bird on April 6,
      1965. Unlike Telstar, Early Bird was a synchronous satellite, hanging
      22,300 miles above one spot on the earth's surface as the earth rotated
      and the satellite revolved around it in the same direction. Early Bird was
      built by Hughes Aircraft, and in designit was very close to the Hughes Syncom 2, the very first synchronous
      communication satellite, that NASA launched on July 26, 1963. How was it
      that Syncom, a synchronous satellite, was a colossal success while Advent,
      a proposed synchronous satellite, had been a dismal failure?
 The success of Syncom was made possible by a design
      so ingenious and simple that this synchronous satellite, which had an
      active station-keeping and attitude-control system, was lighter than
      Telstar, which did not. This, and some advances in propulsion, made it
      possible for the Thor Delta vehicle which had put Telstar in a lower orbit
      to launch Syncom into a much higher synchronous orbit. I am somewhat embarrassed to recount that Harold
      Rosen and his colleagues Don Williams and Tom Hudspeth visited the Holmdel
      Laboratory in 1960, when we had Tillotson's proposal for a lower orbit
      active satellite in mind. Rosen told us about his highly ingenious design
      for a synchronous satellite. He told us that he hoped that his satellite
      could be launched with a Scout rocket (an early small solid-fuel booster)
      using four upper stages. This didn't make much sense to me. Also, he
      showed pictures of a large antenna built into the ground, aimed fixedly at
      the point in the sky over which his satellite would hover. This was
      irrelevant. The real problem was the difficulty and cost of the
      satellite, not the cost of a ground antenna, tracking or not tracking. I
      concluded that Harold Rosen was irresponsible, and I didn't pay enough
      attention to what he had to say. Actually, he was (and is) a tremendously
      ingenious, inventive, careful engineer. When he saw us, he was desperate
      to get his satellite built and launched, and he used every argument he
      could think of, good and bad. Satellite communication via synchronous satellites is
      an amazing resource. It gives us visual access to all of the world. It
      links together the telephone networks of all nations, small and large. It
      is our best resource in mobile communication. But, it is not as powerful
      for communication within and between densely populated areas as are
      optical fibers. Further, two-way satellite traffic suffers some
      degradation through the time delay of almost a third of a second to the
      satellite and back, or almost two thirds of a second round trip. A satellite conversation with echo suppressors is
      pretty bad. Echo cancellers make two-way satellite telephone circuits only
      a little inferior to a ground circuit, fiber or wire. Still, I note in
      television interviews conducted via satellite that the person at the far
      end gives the impression of hesitating before answering a sharp question.
      Really, he hasn't heard the question yet. Why were communication satellites as we now know them
      not thought of earlier, in science fiction, for instance? The reason is
      that writers about space were preoccupied with men in space. The earliest
      references to communication in space, which are traced in Arthur Clarke's
      book, Ascent to Orbit, a Scientific Autobiography, involve
      communication of men in satellites with earth. Hermann Oberth's first
      book, The Rocket Into Planetary Space (1923) suggests that men in a
      space station could communicate with earth, including ships at sea,
      Pierce, Cont.
 with candles at night and hand-mirrors by day. Presumably, Oberth felt the
      radio of his day impractical in space.
 Captain H. Totocnik, writing under the name Hermann
      Noordung in 1928, described a manned space station in synchronous orbit
      and assumed that there would be radio links between earth and the station. In a 1942 science-fiction story, George O. Smith told
      of a manned space station at the Trojan position, sixty degrees ahead of
      Venus, used to maintain communication between Venus and earth when the sun
      blocked the direct path. In the February, 1945 issue of The Wireless World,
      Clarke published a letter suggesting that synchronous satellites could
      give television and microwave coverage of the entire planet. In the
      October, 1945 issue of the same journal he published Extra-Terrestrial
      Relays, in which he elaborated on the idea of worldwide communication
      through manned space stations in synchronous orbit, something that we
      still don't have. Who first had the idea of unmanned satellites of the
      sort we actually do have? I don't know. George Brown has written me that
      in 1935 he and Loren Jones, then manager of transmission engineering at
      RCA, were tremendously enthusiastic about synchronous communication
      satellites, but their enthusiasm was recorded only in notebooks. When I talked about unmanned communication satellites
      in 1954 and wrote about them in 1955, I didn't think of this as a new
      idea, but only as a good one. I received the Marconi International Fellowship,
      chiefly for my work on satellite communication. Clarke received the same
      award later. A fellow I know at COMSAT called concerning Clarke's
      nomination and asked me what Clarke had done. I said that Clarke had
      published the first paper about communication satellites, and that I cited
      it in whatever I wrote. It took more than writing to convince people that
      communication satellites would actually provide a useful means of
      communication. To demonstrate this, someone had to build and launch a
      satellite. The very first communication satellite was the United
      States Government's SCORE (Signal Communication by Orbiting Relay
      Equipment), launched on December 18, 1958. SCORE functioned for 13 days,
      until its batteries ran down. The U.S. Army Signal Corps's Courier project was a
      further development of the SCORE approach, but it was not launched until
      shortly after Echo. It operated for only 17 days. Neither SCORE nor Courier received much public
      notice. They convinced few if any that communication satellites would have
      an early and important role in telecommunications. Echo did, and Telstar clinched the conviction. Koji
      Kobayashi, chairman of the board of NEC, has told me that at the time
      Telstar was launched he had been working for some years on improving
      tropospheric scatter communication, in order to provide communication
      between Japan and the United States by means of a sequence of repeaters
      along the Aleutians. Kobayashi was inthe United States when Telstar was launched and demonstrated. He saw
      immediately that his tropospheric scatter idea was outmoded. He learned of
      Harold Rosen's lonely struggle to promote the synchronous satellite which
      finally became Syncom. Kobayashi visited Hughes and came to believe that
      NEC's best role would be to build satellite ground terminals.
 Echo was built and launched by NASA. The east-coast
      ground terminal was designed and constructed by members of the Bell Labs
      research department, with help from other parts of Bell Labs. Telstar was
      designed and constructed in the development department of Bell Labs, and
      by Western Electric. It incorporated suggestions and work of members of
      the research department. Echo and Telstar established satellite communication
      firmly as a part of the future of telecommunications. Neither satellite
      could have been built and launched without NASA, or without the American
      missile programs (all the launch vehicles prior to the Space Shuttle were
      adaptations of ballistic missiles), or without the expertise and hard work
      of Bell Laboratories, of which I was one employee. What was my part in
      this? Had I not been in my position at Bell Laboratories at
      that time, Echo would not have been launched, and Telstar would not have
      followed. I was fortunate to be the executive director of the part of the
      research department most crucial to these undertakings. Better yet, I was
      on good terms both with my bosses and with the people qualified to do the
      work. They respected my technical ability and were willing to pursue the
      opportunity that I pointed out. Calvin Tomkins wrote a profile of me which appeared
      in the New Yorker of September, 1963. When I spoke with him he had already
      talked to others who had worked on Echo. He said to me, with, I thought, a
      bit of surprise, "They like you." That pleased me greatly. And,
      if "they" had not liked me, there would have been no Echo or
      Telstar. -JRP   |