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100-665: AMSAT is a name for various amateur radio satellite organizations worldwide. In particular, it often refers to the Radio Amateur Satellite Corporation , headquartered in Washington, D.C. AMSAT organizations design, build, arrange launches for, and then operate (command) satellites carrying amateur radio payloads, including the OSCAR series of satellites. Other informally affiliated national organizations exist, such as AMSAT Germany (AMSAT-DL) and AMSAT Japan (JAMSAT). AMSAT

200-575: A linear transponder for two-way communications in real time. Some satellites have a bulletin board for store-and-forward digital communications, or a digipeater for direct packet radio connections. Amateur satellites have been launched into low Earth orbits and into highly elliptical orbits . Currently, amateur satellites support many different types of operation, including FM voice and SSB voice, as well as digital communications of AX.25 FSK ( Packet radio ) and PSK-31 . Uplink and downlink designations use sets of paired letters following

300-640: A CubeSat Simulator as part of these efforts. AMSAT operates the AO-7 , AO-91 , and AO-92 satellites, which are open for general amateur use. The U.S. Air Force FalconSAT-3 was turned over to AMSAT for amateur radio use in late September 2017. AO-95 was launched aboard SpaceX's Falcon-9 SSO-A mission on 4 December 2018 and was later determined to have poor to no RF reception capability, thus preventing commissioning and putting its FM transponder mission into indefinite suspension. Amateur radio satellite Many amateur satellites receive an OSCAR designation, which

400-466: A Harsh Mistress as "unquestionably one of the three or four most influential libertarian novels of the last century". Heinlein did not publish Stranger in a Strange Land until some time after it was written, and the themes of free love and radical individualism are prominently featured in his long-unpublished first novel, For Us, the Living: A Comedy of Customs . The Moon Is a Harsh Mistress tells of

500-553: A Strange Land ) to 1973 ( Time Enough for Love ), Heinlein explored some of his most important themes, such as individualism , libertarianism , and free expression of physical and emotional love. Three novels from this period, Stranger in a Strange Land , The Moon Is a Harsh Mistress , and Time Enough for Love , won the Libertarian Futurist Society 's Prometheus Hall of Fame Award , designed to honor classic libertarian fiction. Jeff Riggenbach described The Moon Is

600-669: A Strange Land ) to write and publish a book exploring ideas of civic virtue, initially serialized as Starship Soldiers . In 1959, his novel (now entitled Starship Troopers ) was considered by the editors and owners of Scribner's to be too controversial for one of its prestige lines, and it was rejected. Heinlein found another publisher ( Putnam ), feeling himself released from the constraints of writing novels for children. He had told an interviewer that he did not want to do stories that merely added to categories defined by other works. Rather he wanted to do his own work, stating that: "I want to do my own stuff, my own way". He would go on to write

700-412: A controversial work and his personal riposte to leftists calling for President Dwight D. Eisenhower to stop nuclear testing in 1958. "The 'Patrick Henry' ad shocked 'em", he wrote many years later of the campaign. " Starship Troopers outraged 'em." Starship Troopers is a coming-of-age story about duty, citizenship, and the role of the military in society. The book portrays a society in which suffrage

800-623: A few weeks of graduate classes in mathematics and physics at the University of California, Los Angeles (UCLA), but he soon quit, either because of his ill-health or because of a desire to enter politics. Heinlein supported himself at several occupations, including real estate sales and silver mining , but for some years found money in short supply. Heinlein was active in Upton Sinclair 's socialist End Poverty in California movement (EPIC) in

900-406: A life-threatening attack of peritonitis , recovery from which required more than two years, and treatment of which required multiple transfusions of Heinlein's rare blood type, A2 negative . As soon as he was well enough to write again, he began work on Time Enough for Love (1973), which introduced many of the themes found in his later fiction. In the mid-1970s, Heinlein wrote two articles for

1000-475: A matter of principle. The novels that Heinlein wrote for a young audience are commonly called "the Heinlein juveniles", and they feature a mixture of adolescent and adult themes. Many of the issues that he takes on in these books have to do with the kinds of problems that adolescents experience. His protagonists are usually intelligent teenagers who have to make their way in the adult society they see around them. On

1100-557: A military academy. When Heinlein graduated from Kansas City Central High School in 1924, he was initially prevented from attending the United States Naval Academy at Annapolis because his older brother Rex was a student there, and at the time, regulations discouraged multiple family members from attending the academy simultaneously. He instead matriculated at Kansas City Community College and began vigorously petitioning Missouri Senator James A. Reed for an appointment to

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1200-592: A mode V/U linear transponder has been accepted for a launch by the NASA CubeSat Launch Initiative. Fox-1E was launched into orbit aboard a Virgin Orbit LauncherOne vehicle on 17 January 2021. Although the beacon has not been heard, the linear transponder is at least partially functioning with a low level downlink signal. AMSAT is currently developing the GOLF series of CubeSats with the first satellite in

1300-786: A modern version of a waterbed in his novel Stranger in a Strange Land . Heinlein, born on July 7, 1907, to Rex Ivar Heinlein (an accountant) and Bam Lyle Heinlein, in Butler, Missouri , was the third of seven children. He was a sixth-generation German-American ; a family tradition had it that Heinleins fought in every American war, starting with the War of Independence . He spent his childhood in Kansas City, Missouri . The outlook and values of this time and place (in his own words, "The Bible Belt ") had an influence on his fiction, especially in his later works, as he drew heavily upon his childhood in establishing

1400-426: A new transponder developed and built by Karl Meinzer and AMSAT Germany (AMSAT-DL). AMSAT Japan (JAMSAT) contributed a transponder to AMSAT-OSCAR 8 (AO-8). In order to launch its satellites, AMSAT has worked with space agencies and commercial launch contractors to develop new ways to take advantage of unused areas of launch vehicles. In return, AMSAT sometimes can negotiate a reduction or waiver of launch costs. One of

1500-530: A publisher, Scribner's , that began publishing a Heinlein juvenile once a year for the Christmas season. Eight of these books were illustrated by Clifford Geary in a distinctive white-on-black scratchboard style. Some representative novels of this type are Have Space Suit—Will Travel , Farmer in the Sky , and Starman Jones . Many of these were first published in serial form under other titles, e.g., Farmer in

1600-435: A radio series, and a board game have been derived more or less directly from his work. He wrote a screenplay for one of the films. Heinlein edited an anthology of other writers' SF short stories. Three nonfiction books and two poems have been published posthumously. For Us, the Living: A Comedy of Customs was published posthumously in 2003; Variable Star , written by Spider Robinson based on an extensive outline by Heinlein,

1700-602: A revolution in which young students are involved; his editor demanded substantial changes in this book's discussion of topics such as the use of weapons by children and the misidentified sex of the Martian character. Heinlein was always aware of the editorial limitations put in place by the editors of his novels and stories, and while he observed those restrictions on the surface, was often successful in introducing ideas not often seen in other authors' juvenile SF. In 1957, James Blish wrote that one reason for Heinlein's success "has been

1800-426: A series of challenging books that redrew the boundaries of science fiction, including Stranger in a Strange Land (1961) and The Moon Is a Harsh Mistress (1966). Beginning in 1970, Heinlein had a series of health crises, broken by strenuous periods of activity in his hobby of stonemasonry : in a private correspondence, he referred to that as his "usual and favorite occupation between books". The decade began with

1900-718: A seven-year hiatus brought on by poor health, Heinlein produced five new novels in the period from 1980 ( The Number of the Beast ) to 1987 ( To Sail Beyond the Sunset ). These books have a thread of common characters and time and place. They most explicitly communicated Heinlein's philosophies and beliefs, and many long, didactic passages of dialog and exposition deal with government, sex, and religion. These novels are controversial among his readers and one critic, David Langford , has written about them very negatively. Heinlein's four Hugo awards were all for books written before this period. Most of

2000-567: A strong influence on his character and writing. In 1929, he graduated from the Naval Academy with the equivalent of a bachelor of arts in engineering. (At that time, the Academy did not confer degrees.) He ranked fifth in his class academically but with a class standing of 20th of 243 due to disciplinary demerits. The U.S. Navy commissioned him as an ensign shortly after his graduation. He advanced to lieutenant junior grade in 1931 while serving aboard

2100-407: A travelogue of their first around-the-world tour in 1954, Tramp Royale . The novel Podkayne of Mars, which had been edited against Heinlein's wishes in their original release, was reissued with the original ending. Stranger In a Strange Land was originally published in a shorter form, but both the long and short versions are now simultaneously available in print. Heinlein's archive is housed by

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2200-614: A war of independence waged by the Lunar penal colonies, with significant comments from a major character, Professor La Paz, regarding the threat posed by government to individual freedom. Although Heinlein had previously written a few short stories in the fantasy genre, during this period he wrote his first fantasy novel, Glory Road . In Stranger in a Strange Land and I Will Fear No Evil , he began to mix hard science with fantasy, mysticism, and satire of organized religion. Critics William H. Patterson, Jr., and Andrew Thornton believe that this

2300-403: A writer, and finds love with a female character. The 1982 novel Friday , a more conventional adventure story (borrowing a character and backstory from the earlier short story Gulf , also containing suggestions of connection to The Puppet Masters ) continued a Heinlein theme of expecting what he saw as the continued disintegration of Earth's society, to the point where the title character

2400-542: Is a list of major amateur satellites in Japanese Misplaced Pages ). Es’hail 2 / QO-100 Launched November 15, 2018.In geostationary orbit covering Brazil to Thailand. Narrowband Linear transponder 2400.050 - 2400.300 MHz Uplink 10489.550 - 10489.800 MHz Downlink Wideband digital transponder 2401.500 - 2409.500 MHz Uplink 10491.000 - 10499.000 MHz Downlink The first amateur satellites contained telemetry beacons. Since 1965, most OSCARs carry

2500-697: Is an acronym for Orbiting Satellite Carrying Amateur Radio . The designation is assigned by AMSAT , an organization which promotes the development and launch of amateur radio satellites. Because of the prevalence of this designation, amateur radio satellites are often referred to as OSCARs. These satellites can be used free of charge by licensed amateur radio operators for voice ( FM , SSB ) and data ( AX.25 , packet radio , APRS ) communications. Currently, over 18 fully operational amateur radio satellites are in orbit. They may be designed to act as repeaters , as linear transponders , and as store and forward digital relays. Amateur radio satellites have helped advance

2600-482: Is at sea level . Robert and Virginia designed and built a new residence, circular in shape, in the adjacent village of Bonny Doon . Ginny undoubtedly served as a model for many of his intelligent, fiercely independent female characters. She was a chemist and rocket test engineer , and held a higher rank in the Navy than Heinlein himself. She was also an accomplished college athlete , earning four letters. In 1953–1954,

2700-522: Is earned by demonstrated willingness to place society's interests before one's own, at least for a short time and often under onerous circumstances, in government service; in the case of the protagonist, this was military service. Later, in Expanded Universe , Heinlein said that it was his intention in the novel that service could include positions outside strictly military functions such as teachers, police officers, and other government positions. This

2800-670: Is possible, but it is difficult to remain precisely near the frequency. Frequency modulation is more tolerant of doppler shifts than single-sideband , and therefore FM is much easier to tune manually. A number of low Earth orbit (LEO) OSCAR satellites use frequency modulation (FM). These are also commonly referred to as "FM LEOs" or the "FM Birds". Such satellites act as FM amateur radio repeaters that can be communicated through using commonly available amateur radio equipment. Communication can be achieved with handheld transceivers using manual doppler correction. Satellite passes are typically less than 15 minutes long. The names of

2900-419: Is presented in the novel as an outgrowth of the failure of unearned suffrage government and as a very successful arrangement. In addition, the franchise was only awarded after leaving the assigned service; thus those serving their terms—in the military, or any other service—were excluded from exercising any franchise. Career military were completely disenfranchised until retirement. From about 1961 ( Stranger in

3000-451: Is published by AMSAT . AMSAT has not been actively involved in the launch and operation of most amateur satellites in the last two decades beyond allocating an OSCAR number. The first amateur satellite, simply named OSCAR 1, was launched on December 12, 1961, barely four years after the launch of the world's first satellite, Sputnik I . The satellite had to be built in a very specific shape and weight, so it could be used in place of one of

3100-436: Is simply an expression of Heinlein's longstanding philosophical opposition to positivism . Heinlein stated that he was influenced by James Branch Cabell in taking this new literary direction. The penultimate novel of this period, I Will Fear No Evil , is according to critic James Gifford "almost universally regarded as a literary failure" and he attributes its shortcomings to Heinlein's near-death from peritonitis . After

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3200-540: The Britannica Compton Yearbook . He and Ginny crisscrossed the country helping to reorganize blood donation in the United States in an effort to assist the system which had saved his life. At science fiction conventions to receive his autograph, fans would be asked to co-sign with Heinlein a beautifully embellished pledge form he supplied stating that the recipient agrees that they will donate blood . He

3300-450: The satellite . The satellite in turn, will be receiving the uplink signal at a higher frequency than normal so the ground station's transmitted uplink frequency must be lower to be received by the satellite. After the satellite passes overhead and begins to move away, this process is reversed. The downlink frequency will appear lower and the uplink frequency will need to be adjusted higher . The following mathematical formulas relate

3400-622: The space marine and mecha archetypes) and The Moon Is a Harsh Mistress . His work sometimes had controversial aspects, such as plural marriage in The Moon Is a Harsh Mistress , militarism in Starship Troopers and technologically competent women characters who were formidable, yet often stereotypically feminine—such as Friday . Heinlein used his science fiction as a way to explore provocative social and political ideas and to speculate how progress in science and engineering might shape

3500-809: The 1941 Worldcon , held in Denver. During World War II , Heinlein was employed by the Navy as a civilian aeronautical engineer at the Navy Aircraft Materials Center at the Philadelphia Naval Shipyard in Pennsylvania . Heinlein recruited Isaac Asimov and L. Sprague de Camp to also work there. While at the Philadelphia Naval Shipyards, Asimov, Heinlein, and de Camp brainstormed unconventional approaches to kamikaze attacks, such as using sound to detect approaching planes. As

3600-508: The 435-438 MHz band is particularly popular for amateur/educational small satellites such as Cubesats. Robert A Heinlein Robert Anson Heinlein ( / ˈ h aɪ n l aɪ n / ; July 7, 1907 – May 8, 1988) was an American science fiction author, aeronautical engineer , and naval officer . Sometimes called the "dean of science fiction writers", he was among the first to emphasize scientific accuracy in his fiction, and

3700-582: The AMSAT P5A mission to Mars , which also have ARM CPUs. Emulators for both the classic 16-bit and the 32-bit IPS language and development environment are available for many other systems. From its first launch, AMSAT projects have had international scope. By 2006, 21 countries had launched an amateur satellite. Many of these countries have their own AMSAT affiliate, some of which are noted below: The AMSAT Phase system describes an amateur satellite based upon its capabilities or mode of operation and roughly parallel

3800-467: The Doppler shift to the velocity of the satellite. Due to the complexity of finding the relative velocity of the satellite and the speed with which these corrections must be made, these calculations are normally accomplished using satellite tracking software . Many modern transceivers include a computer interface that allows for automatic doppler effect correction . Manual frequency-shift correction

3900-474: The Earth's atmosphere (or never successfully left it). The country listing denotes the country that constructed the satellite and not the launching country. Currently, 30 countries have launched an OSCAR satellite. These countries, in chronological order by date of launch, include: SuitSat , an obsolete Russian space suit with a transmitter aboard, was officially known as "AMSAT-OSCAR 54". Coincidentally, "Oscar"

4000-442: The Earth's atmosphere. The country listing denotes the country that constructed the satellite and not the launching country. AMSAT built a series of five 1U CubeSats to carry university experiments, including a camera, and mode U/V FM repeaters. The first two of these satellites, Fox-1A, and Fox-1B, were launched on 8 October 2015 and 18 November 2017 respectively and are currently operational and available for use. Fox-1D (AO-92)

4100-510: The Future History on some points, while maintaining consistency in some other areas. The Future History was eventually overtaken by actual events. These discrepancies were explained, after a fashion, in his later World as Myth stories. Heinlein's first novel published as a book, Rocket Ship Galileo , was initially rejected because going to the Moon was considered too far-fetched, but he soon found

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4200-473: The Heinlein mythos where unrepentant law-breakers are exiled). It appears that Heinlein at least attempted to live in a manner consistent with these ideals, even in the 1930s, and had an open relationship in his marriage to his second wife, Leslyn. He was also a nudist ; nudism and body taboos are frequently discussed in his work. At the height of the Cold War , he built a bomb shelter under his house, like

4300-596: The Heinleins voyaged around the world (mostly via ocean liners and cargo liners , as Ginny detested flying), which Heinlein described in Tramp Royale , and which also provided background material for science fiction novels set aboard spaceships on long voyages, such as Podkayne of Mars , Friday and Job: A Comedy of Justice , the latter initially being set on a cruise much as detailed in Tramp Royale . Ginny acted as

4400-507: The Hugo Awards came into existence. In his fiction, Heinlein coined terms that have become part of the English language, including grok , waldo and speculative fiction , as well as popularizing existing terms like " TANSTAAFL ", " pay it forward ", and " space marine ". He also anticipated mechanical computer-aided design with "Drafting Dan" in his novel The Door into Summer and described

4500-460: The Living: A Comedy of Customs (1939), did not see print during his lifetime, but Robert James tracked down the manuscript and it was published in 2003. Though some regard it as a failure as a novel, considering it little more than a disguised lecture on Heinlein's social theories , some readers took a very different view. In a review of it, John Clute wrote: I'm not about to suggest that if Heinlein had been able to publish [such works] openly in

4600-583: The Naval Academy. In part due to the influence of the Pendergast machine , the Naval Academy admitted him in June 1925. Heinlein received his discharge from the Missouri National Guard as a staff sergeant. Reed later told Heinlein that he had received 100 letters of recommendation for nomination to the Naval Academy, 50 for other candidates and 50 for Heinlein. Heinlein's experience in the U.S. Navy exerted

4700-548: The Reagan SDI spring 1983 speech. Asked to appear before a Joint Committee of the United States Congress that year, he testified on his belief that spin-offs from space technology were benefiting the infirm and the elderly. Heinlein's surgical treatment re-energized him, and he wrote five novels from 1980 until he died in his sleep from emphysema and heart failure on May 8, 1988. In 1995, Spider Robinson wrote

4800-520: The Sky was published as Satellite Scout in the Boy Scout magazine Boys' Life . There has been speculation that Heinlein's intense obsession with his privacy was due at least in part to the apparent contradiction between his unconventional private life and his career as an author of books for children. However, For Us, the Living explicitly discusses the political importance Heinlein attached to privacy as

4900-631: The Special Collections department of McHenry Library at the University of California at Santa Cruz . The collection includes manuscript drafts, correspondence, photographs and artifacts. A substantial portion of the archive has been digitized and it is available online through the Robert A. and Virginia Heinlein Archives. Heinlein published 32 novels, 59 short stories, and 16 collections during his life. Nine films, two television series, several episodes of

5000-611: The University of Maine announced that an LTM would be provided for the University of Maine's MESAT1 CubeSat, Maine's first small satellite. Additionally, AMSAT supports amateur radio on human spaceflight missions as a supporting partner of Amateur Radio on the International Space Station (ARISS). This partnership includes support for future missions on the Lunar Gateway . AMSAT also supports STEM education and has developed

5100-513: The airplane-based tests. Once it was found to be operative and reliable, the satellite was shipped to Kennedy Space Center, where it was mounted in the launch vehicle's third stage . OSCAR 10's dimensions were: Height: 1.35 m (53 in) Width: 2.0 m (78.75 in) Weight: 140 kg at launch; 90 kg post engine firings. Other programs besides OSCAR have included Iskra (Soviet Union) circa 1982, JAS-1 (Fuji-OSCAR 12) (Japan) in 1986, RS (Soviet Union and Russia), and CubeSats . (There

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5200-710: The commander of the U.S. Navy's first modern aircraft carrier. Heinlein also served as gunnery officer aboard the destroyer USS  Roper in 1933 and 1934, reaching the rank of lieutenant. His brother, Lawrence Heinlein, served in the U.S. Army, the U.S. Air Force, and the Missouri National Guard , reaching the rank of major general in the National Guard. In 1929, Heinlein married Elinor Curry of Kansas City. However, their marriage lasted only about one year. His second marriage, to Leslyn MacDonald (1904–1981) in 1932, lasted 15 years. MacDonald was, according to

5300-472: The components for OSCAR 10 were "off the shelf". Jan King led the project. Solar cells were bought in batches of 10 or 20 from Radio Shack , and tested for efficiency by group members. The most efficient cells were kept for the project; the rest were returned to RadioShack. Once ready, OSCAR 10 was mounted aboard a private plane, and flown a couple of times to evaluate its performance and reliability. Special QSL cards were issued to those who participated in

5400-528: The contest's first-prize payoff. Another Future History story, "Misfit", followed in November. Some saw Heinlein's talent and stardom from his first story, and he was quickly acknowledged as a leader of the new movement toward "social" science fiction . In California he hosted the Mañana Literary Society , a 1940–41 series of informal gatherings of new authors. He was the guest of honor at Denvention,

5500-420: The development of Heinlein's radical ideas about man as a social animal , including his interest in free love . The root of many themes found in his later stories can be found in this book. It also contained a large amount of material that could be considered background for his other novels. This included a detailed description of the protagonist's treatment to avoid being banished to Coventry (a lawless land in

5600-515: The development of amateur satellites. Most amateur satellites do not receive their sequential OSCAR designation until after they are successfully in orbit, and then only at the request of the launching organization. Regardless, amateur satellites will have been named by the organization that constructed it, and that name is frequently prepended to its OSCAR designation, resulting a name such as CubeSat-OSCAR 57. In conversation, names are usually abbreviated as CO-57 or similar. A unique amateur satellite

5700-576: The early 1930s. He was deputy publisher of the EPIC News , which Heinlein noted "recalled a mayor, kicked out a district attorney, replaced the governor with one of our choice." When Sinclair gained the Democratic nomination for Governor of California in 1934, Heinlein worked actively in the campaign. Heinlein himself ran for the California State Assembly in 1938, but was unsuccessful. Heinlein

5800-448: The first American science-fiction writers to break into mainstream magazines such as The Saturday Evening Post in the late 1940s. He was one of the best-selling science-fiction novelists for many decades, and he, Isaac Asimov , and Arthur C. Clarke are often considered the "Big Three" of English-language science fiction authors. Notable Heinlein works include Stranger in a Strange Land , Starship Troopers (which helped mold

5900-448: The first few years of his career." Alexei expresses awe in Heinlein's ability to show readers a world so drastically different from the one we live in now, yet have so many similarities. He says that "We find ourselves not only in a world other than our own, but identifying with a living, breathing individual who is operating within its context, and thinking and acting according to its terms." The first novel that Heinlein wrote, For Us,

6000-403: The first reader of his manuscripts . Isaac Asimov believed that Heinlein made a swing to the right politically at the same time he married Ginny. In 1934, Heinlein was discharged from the Navy, owing to pulmonary tuberculosis . During a lengthy hospitalization, and inspired by his own experience while bed-ridden, he developed a design for a waterbed . After his discharge, Heinlein attended

6100-415: The first science fiction writer to break out of the " pulp ghetto ". In 1950, the movie Destination Moon —the documentary-like film for which he had written the story and scenario, co-written the script, and invented many of the effects—won an Academy Award for special effects . Heinlein created SF stories with social commentary about relationships. In The Puppet Masters , a 1951 alien invasion novel,

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6200-452: The future of politics, race, religion, and sex. Within the framework of his science-fiction stories, Heinlein repeatedly addressed certain social themes: the importance of individual liberty and self-reliance , the nature of sexual relationships, the obligation individuals owe to their societies, the influence of organized religion on culture and government, and the tendency of society to repress nonconformist thought. He also speculated on

6300-446: The high grade of machinery which goes, today as always, into his story-telling. Heinlein seems to have known from the beginning, as if instinctively, technical lessons about fiction which other writers must learn the hard way (or often enough, never learn). He does not always operate the machinery to the best advantage, but he always seems to be aware of it." Heinlein decisively ended his juvenile novels with Starship Troopers (1959),

6400-466: The high orbital speed of the amateur satellites, the uplink and downlink frequencies will vary during the course of a satellite pass . This phenomenon is known as the Doppler effect . While the satellite is moving towards the ground station, the downlink frequency will appear to be higher than normal. Hence, the receiver frequency at the ground station must be adjusted higher to continue receiving

6500-599: The incoming Reagan administration . Members included such aerospace industry leaders as former astronaut Buzz Aldrin , General Daniel O. Graham , aerospace engineer Max Hunter and North American Rockwell VP for Space Shuttle development George Merrick. Policy recommendations from the Council included ballistic missile defense concepts which were later transformed into what was called the Strategic Defense Initiative . Heinlein assisted with Council contribution to

6600-487: The influence of space travel on human cultural practices. Heinlein was heavily influenced by the visionary writers and philosophers of his day. William H. Patterson Jr, writing in Robert A. Heinlein: In Dialogue with his Century, states that by 1930, Heinlein was a progressive liberal who had spent some time in the open sexuality climate of New York’s Jazz Age Greenwich Village . Heinlein believed that some level of socialism

6700-460: The launch vehicle ballast weights. OSCAR 1 was the first satellite to be ejected as a secondary payload (the primary payload was Discoverer 36 ) and to subsequently enter a separate orbit. It carried no on-board propulsion and its orbit decayed quickly. Despite orbiting for only 22 days, OSCAR 1 was an immediate success and led to follow-on missions. Over 570 amateur radio operators in 28 countries forwarded observations to Project OSCAR. Most of

6800-460: The majority of service-allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is within the responsibility of the appropriate national administration. The allocation might be primary, secondary, exclusive, and shared. In addition to the formal allocations in the main table such as above, there is also a key ITU-R footnote RR 5.282 that provides for additional allocations:- Of these,

6900-539: The most significant is the Ariane Structure for Auxiliary Payloads (ASAP), developed and manufactured in partnership with the European Space Agency (ESA) in 1990 for use on its Ariane 4 launch vehicle . AMSAT was again able to take advantage of unused space with the launch of AMSAT-OSCAR 40 (AO-40), occupying unused space on an Ariane 5 . The IPS (Interpreter for Process Structures) programming language

7000-518: The new aircraft carrier USS  Lexington , where he worked in radio communications —a technology then still in its earlier stages. The captain of this carrier, Ernest J. King , later served as the Chief of Naval Operations and Commander-in-Chief, U.S. Fleet during World War II . Military historians frequently interviewed Heinlein during his later years and asked him about Captain King and his service as

7100-496: The next few months, he became more and more exhausted, and his health again began to decline. The problem was determined to be a blocked carotid artery , and he had one of the earliest known carotid bypass operations to correct it. In 1980, Robert Heinlein was a member of the Citizen's Advisory Council on National Space Policy , chaired by Jerry Pournelle , which met at the home of SF writer Larry Niven to write space policy papers for

7200-480: The novel Variable Star based on an outline and notes created by Heinlein. Heinlein's posthumously published nonfiction includes a selection of correspondence and notes edited into a somewhat autobiographical examination of his career, published in 1989 under the title Grumbles from the Grave by his wife, Virginia; his book on practical politics written in 1946 and published as Take Back Your Government in 1992; and

7300-472: The novels from this period are recognized by critics as forming an offshoot from the Future History series and are referred to by the term World as Myth . The tendency toward authorial self-reference begun in Stranger in a Strange Land and Time Enough for Love becomes even more evident in novels such as The Cat Who Walks Through Walls , whose first-person protagonist is a disabled military veteran who becomes

7400-521: The one featured in Farnham's Freehold . After For Us, the Living , Heinlein began selling (to magazines) first short stories, then novels, set in a Future History , complete with a time line of significant political, cultural, and technological changes. A chart of the future history was published in the May 1941 issue of Astounding . Over time, Heinlein wrote many novels and short stories that deviated freely from

7500-460: The pages of Astounding in 1939, SF would have gotten the future right; I would suggest, however, that if Heinlein, and his colleagues, had been able to publish adult SF in Astounding and its fellow journals, then SF might not have done such a grotesquely poor job of prefiguring something of the flavor of actually living here at the onset of 2004. For Us, the Living was intriguing as a window into

7600-738: The point of view character Sam persuades fellow operative Mary to marry him. When they go to the county clerk, they are offered a variety of marriage possibilities; “Term, renewable or lifetime”, as short as six months or as long as forever. Also, he embarked on a series of juvenile novels for the Charles Scribner's Sons publishing company that went from 1947 through 1959, at the rate of one book each autumn, in time for Christmas presents to teenagers. He also wrote for Boys' Life in 1952. Heinlein used topical materials throughout his juvenile series beginning in 1947, but in 1958 he interrupted work on The Heretic (the working title of Stranger in

7700-464: The same purposes as those of the amateur service .» This radiocommunication service is classified in accordance with ITU Radio Regulations (article 1) as follows: Radiocommunication service (article 1.19) The allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations (edition 2012). In order to improve harmonisation in spectrum utilisation,

7800-416: The satellites below are sorted in chronological order by launch date, ascending. The status column denotes the current operational status of the satellite. Green signifies that the satellite is currently operational, orange indicates that the satellite is partially operational or failing. Red indicates that the satellite is non operational and black indicates that the satellite has re-entered

7900-413: The satellites below are sorted in chronological order by launch date, ascending. The status column denotes the current operational status of the satellite. Green signifies that the satellite is currently operational, orange indicates that the satellite is partially operational or failing. Red indicates that the satellite is non operational and black indicates that the satellite has re-entered

8000-475: The science of satellite communications. Contributions include the launch of the first satellite voice transponder (OSCAR 3) and the development of highly advanced digital "store-and-forward" messaging transponder techniques. The Amateur Radio Satellite community is very active in building satellites and in finding launch opportunities. Lists of functioning satellites need updating regularly, as new satellites are launched and older ones fail. Current information

8100-410: The series, GOLF-TEE, expected to launch in 2022. The GOLF series is designed to test technologies for future high Earth orbit (HEO) missions. AMSAT also offers a communications platform for university CubeSats. The AMSAT Linear Transponder Module (LTM) includes a VHF/UHF telemetry beacon, command receiver, and linear transponder. The first LTM flew on HuskySat-OSCAR 107 in 2020. In July 2020, AMSAT and

8200-572: The setting and cultural atmosphere in works like Time Enough for Love and To Sail Beyond the Sunset . The 1910 appearance of Halley's Comet inspired the young child's life-long interest in astronomy. In January 1924, the sixteen year old Heinlein lied about his age to enlist in Company C, 110th Engineer Regiment , of the Missouri National Guard , in Kansas City. His family could not afford to send Heinlein to college, so he sought an appointment to

8300-496: The structure X/Y where X is the uplink band and Y is the downlink band. Occasionally, the downlink letter is rendered in lower case (i.e., X/y ). With a few exceptions, the letters correspond to IEEE's standard for radar frequency letter bands... Prior to the launch of OSCAR 40, operating modes were designated using single letters to indicate both uplink and downlink bands. While deprecated, these older mode designations are still widely used in casual conversation. Due to

8400-445: The surface, they are simple tales of adventure, achievement, and dealing with stupid teachers and jealous peers. Heinlein was a vocal proponent of the notion that juvenile readers were far more sophisticated and able to handle more complex or difficult themes than most people realized. His juvenile stories often had a maturity to them that made them readable for adults. Red Planet , for example, portrays some subversive themes, including

8500-441: The testimony of Heinlein's Navy friend, Rear Admiral Cal Laning , "astonishingly intelligent, widely read, and extremely liberal, though a registered Republican ", while Isaac Asimov later recalled that Heinlein was, at the time, "a flaming liberal ". (See section: Politics of Robert Heinlein .) At the Philadelphia Naval Shipyard , Heinlein met and befriended a chemical engineer named Virginia "Ginny" Gerstenfeld . After

8600-654: The town of Raton, New Mexico . Soon thereafter, they set up housekeeping in the Broadmoor district of Colorado Springs, Colorado , in a house that Heinlein and his wife designed. As the area was newly developed, they were allowed to choose their own house number, 1776 Mesa Avenue. The design of the house was featured in Popular Mechanics . They remained married until Heinlein's death. In 1965, after various chronic health problems of Virginia's were traced back to altitude sickness , they moved to Santa Cruz, California , which

8700-496: The war wound down in 1945, Heinlein began to re-evaluate his career. The atomic bombings of Hiroshima and Nagasaki , along with the outbreak of the Cold War , galvanized him to write nonfiction on political topics. In addition, he wanted to break into better-paying markets. He published four influential short stories for The Saturday Evening Post magazine, leading off, in February 1947, with " The Green Hills of Earth ". That made him

8800-415: The war, her engagement having fallen through, she attended UCLA for doctoral studies in chemistry , and while there reconnected with Heinlein. As his second wife's alcoholism gradually spun out of control, Heinlein moved out and the couple filed for divorce . Heinlein's friendship with Virginia turned into a relationship and on October 21, 1948—shortly after the decree nisi came through—they married in

8900-584: Was AMSAT-OSCAR 6 (AO-6) on 15 October 1972. AO-6 was AMSAT's first long-life satellite, and was built with participants from Australia and West Germany. Command stations in Australia , Canada , United Kingdom , Hungary , Morocco , New Zealand , the United States and West Germany controlled the satellite, contributing greatly to its 4.5 years of service. Further launches continued to emphasize international cooperation, with AMSAT-OSCAR 7 (AO-7) launching with

9000-497: Was SuitSat , an obsolete Russian space suit with a transmitter in it, which was launched in 2006 from the International Space Station . In a twist of fate, "Oscar" was the name given to an obsolete space suit by its young owner in the 1958 novel Have Space Suit, Will Travel , by Robert A Heinlein . This book was originally published a year after the launch of the first artificial satellite, Sputnik 1 . The names of

9100-458: Was founded in 1969 in Washington, D.C. to continue the efforts begun by Project OSCAR . Its first project was to coordinate the launch of OSCAR 5 , constructed by students at the University of Melbourne . Some design modifications were needed and were made by AMSAT members, and the satellite was successfully launched on 30 January 1970, on a NASA Thor Delta launch vehicle. AMSAT's next launch

9200-560: Was inevitable and was already occurring in America. He was absorbing the social concepts of writers such as H.G. Wells and Upton Sinclair . He adopted many of the progressive social beliefs of his day and projected them forward. Heinlein was named the first Science Fiction Writers Grand Master in 1974. Four of his novels won Hugo Awards . In addition, fifty years after publication, seven of his works were awarded " Retro Hugos "—awards given retrospectively for works that were published before

9300-677: Was launched on 12 January 2018 on the PSLV-C40 mission from Satish Dhawan Space Centre in Sriharikota , India . Fox-1Cliff was launched from Vandenberg Air Force Base aboard the SpaceX Falcon-9 SSO-A rocket on 3 December 2018. These four Fox satellites contain FM transponders with uplink on the 70 cm band and downlink on the 2 metre band. RadFxSat-2/Fox-1E, a variation of the Fox-1 series, carrying

9400-486: Was published in September 2006. Four collections have been published posthumously. Heinlein began his career as a writer of stories for Astounding Science Fiction magazine, which was edited by John Campbell. The science fiction writer Frederik Pohl has described Heinlein as "that greatest of Campbell-era sf writers". Isaac Asimov said that, from the time of his first story, the science fiction world accepted that Heinlein

9500-614: Was running as a left-wing Democrat in a conservative district, and he never made it past the Democratic primary. While not destitute after the campaign—he had a small disability pension from the Navy—Heinlein turned to writing to pay off his mortgage. His first published story, " Life-Line ", was printed in the August 1939 issue of Astounding Science Fiction . Originally written for a contest, it sold to Astounding for significantly more than

9600-652: Was specifically written for the RCA 1802 AMSAT Phase III satellite. The IPS threaded code language, developed for AMSAT Phase III, is the first known use of a high-level language on board a spacecraft. Another 16-bit IPS implementation was specifically developed to run on the ARM CPU in the IHU-2 on the AMSAT P3D. A 32-bit IPS implementation has been developed for the AMSAT P3E satellite and

9700-402: Was the best science fiction writer in existence, adding that he would hold this title through his lifetime. Alexei and Cory Panshin noted that Heinlein's impact was immediately felt. In 1940, the year after selling 'Life-Line' to Campbell, he wrote three short novels, four novelettes, and seven short stories. They went on to say that "No one ever dominated the science fiction field as Bob did in

9800-512: Was the guest of honor at the Worldcon in 1976 for the third time at MidAmeriCon in Kansas City, Missouri . At that Worldcon, Heinlein hosted a blood drive and donors' reception to thank all those who had helped save lives. Beginning in 1977, and including an episode while vacationing in Tahiti in early 1978, he had episodes of reversible neurologic dysfunction due to transient ischemic attacks . Over

9900-620: Was the name given to an obsolete space suit by its young owner in the 1958 novel Have Space Suit—Will Travel , by Robert A. Heinlein . This book was first published a year after the launch of Sputnik 1 , the world's first artificial satellite. Amateur-satellite service (also: amateur-satellite radiocommunication service ) is – according to Article 1.57 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as « A radiocommunication service using space stations on earth satellites for

10000-420: Was thus a pioneer of the subgenre of hard science fiction . His published works, both fiction and non-fiction, express admiration for competence and emphasize the value of critical thinking . His plots often posed provocative situations which challenged conventional social mores . His work continues to have an influence on the science-fiction genre, and on modern culture more generally. Heinlein became one of

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