1909 Radio-telegraphic Installations & Radio-telegraphers on Certain Ocean Steamers (Hearing before U.S. House Comm. Merchant Marine & Fisheries) 2 What do you mean by the term ‘radio’? [Apparently referring to the radio- in radio-telegraphic.] It is a technical term now generally used and applied to these instruments.]

1912 Oakland (Calif.) Tribune 18 May 5/4 Failure to get his discharge from the navy..caused Charles P. Bush, 33 years old, a radio operator, to commit suicide.

1917 Electr. Experimenter May 3/1 When the German spies..found that it was not very healthy to operate their outfits in attics or in house chimneys..they simply put their radios in touring cars, cleverly concealing the aerial wires inside of the car bodies.

1923 Davenport (Iowa) Democrat & Leader 25 Mar. 2/1 Listening in on the radio now is all the rage in France.

1925 H. L. Foster Trop. Tramp with Tourists 97 It fairly shrieked with the blare of jazz—of jazz from radios, jazz from mechanical pianos.

1936 King Edward VIII in Manch. Guardian Weekly 6 Mar. 185/1 Science has made it possible for me..to speak to you all over the radio.

1941 W. H. Auden New Year Let. ii. 36 He moves on tiptoe round the room, Turns on the radio to mark Isolde's Sehnsucht for the dark.

1968 New Society 22 Aug. 265/2 Non-U radio/U wireless is no longer true; the U call it a radio too.

1973 J. Pattinson Search Warrant ii. 28 There was a load of noise... It sounded like a radio going full belt on a pop-music channel.

1989 A. Aird 1990 Good Pub Guide 661 This friendly old waterside place..has a ship-to-shore radio as well as a wind speed indicator in the bar.

2006 P. Rusesabagina & T. Zoellner Ordinary Man viii. 168 There was a radio on the outside ledge and I would listen to the news.

1906 Internat. Radiotelegraphic Convention: Regulations (Internat. Radiotelegr. Conf., Berlin) 34 Radiotelegrams bear the service instruction ‘Radio’ in the preamble.]

1915 R. H. Davis With Allies i. 2 She sent no wireless messages. But she could receive them... For any exhibition they gave of excitement or concern, the news the radio brought them might have been the result of a by-election.

1920 Glasgow Herald 10 Aug. 7 In reply the Polish Government sent the following radio.

1924 R. Keable Recompence (1926) i. 18 There's a radio in. The Balmoral sailed a fortnight after we did.

1925 J. Dos Passos Manhattan Transfer iii. v. 372 I'll go and send Blackhead a radio.

1968 Physical Rev. Lett. 21 1540/1 NGC1275 and 3C120..are a hundred times more luminous in the radio than most of the Seyferts.

1975 Nature 3 Jan. 7/1 It [sc. the Crab nebula] is unique in that it has been detected over the entire electromagnetic spectrum from radio through infra~red and the visual to X rays and γ rays.

1995 R. C. Smith Observational Astrophysics iv. 122 The other main constituent of the interstellar medium, molecular gas, also radiates primarily in the radio, especially in the millimetre range.

1922 Atlanta Constit. 21 May 1 (caption) A radio alarm system will be installed on every building, which will automatically act at the start of a fire and give the alarm.

1949 Times 4 Nov. 3/6 (advt.) It also incorporates a first-class electric clock, and a radio alarm which wakes you.

1987 Guardian (Nexis) 22 Sept. He emphasised the importance of radio alarms in preventing crime and fires.

2000 J. Bryant & R. L. Heath Human Communication Theory & Res. (ed. 2) i. 1 You drift into sleep. Then the radio alarm turns on. Another day has begun.

1922 Washington Post 22 Aug. 17/8 A radio alarm clock... When the proper combination of dots and dashes is received the last signal operates a relay that closes the circuit and rings a bell.

1939 Southeast Economist (Chicago) 4 May 1/1 Now..you can wake up with music; that is, if you have one of the new-fangled radio alarm clocks.

2003 R. S. Bridger Introd. Ergonomics xv. 446 Set the alarm on a radio alarm clock when it is in ‘time’ mode.

1927 Davenport (Iowa) Democrat & Leader 14 Apr. 19/3 The radio altimeter, soon to be developed, apparently, to record so delicately and correctly that safe landings can be made in fog.

1953 R. Chisholm Cover of Darkness i. xii. 123 My Mosquito had a radio altimeter, a device which gave absolute readings of height.

1991 Pilot Nov. 11/1 At 420 knots and with a ‘rad-alt’ (radio altimeter) height of 250 feet..we skim over Wrenbury and Hack Green.

1916 Literary Digest 1 Jan. 13/1 But there will be a lone radio amateur on the alert who has seen the approaching fleet.

1991 V. Bugliosi Sea will Tell xv. 125 At the time [sc. 1974], there existed the Mickey Mouse Network, an extensive chain of radio amateurs operating in the Pacific.

1919 Pop. Sci. Monthly Oct. 49/2 What is a radio beacon?

1966 D. Francis Flying Finish ii. 27 I flew contentedly along..checking my direction by the radio beacons over which I passed.

1992 Equinox Aug. 55/2 An Emergency Position Indicating Radio Beacon..is required on all Canadian maritime vessels over 20 metres in length.

1972 Icarus 17 692 The maximum possible altitude variation of ‘radio-bright’ areas at a wavelength of 3.8 cm were evaluated.

1980 Astrophysical Jrnl.: Lett. 239 43/1 The quasars observed were relatively luminous..at both optical and radio wavelengths—i.e., most were radio-bright.

1999 Sky & Telescope Oct. 20/1 An international team of coinvestigators used radio-bright clouds of water vapor called masers to measure the distance to..a spiral galaxy in Canes Venatici.

1952 Proc. Royal Soc. A. 211 354 A similar analysis..has already been applied to the measurement of the distribution of radio ‘brightness’ across the undisturbed solar disk.

1974 Sci. Amer. Aug. 26/3 In the direction of this cloud of ionized gas..there is a decrease in the radio brightness of the sky.

1997 Planetary & Space Sci. 45 1177/1 The Effelsberg 100m Radio Telescope monitored Jupiter's radio brightness before, during and after the impacts of comet Shoemaker-Levy 9.

1949 Nature 12 Nov. 816/1 Although visual flares grow rapidly, they do not compare in abruptness with radio bursts, which often rise in intensity by more than a hundred times in less than a minute.

1972 Jrnl. Brit. Astron. Assoc. 82 149 Solar flares and radio bursts have been studied with sophisticated radio heliographs and satellite-borne X-ray detectors.

1980 Solar Physics 65 397 The planetary radio astronomy experiment on the Voyager spacecraft observed several type II solar radiobursts at frequencies below 1.3 MHz.

2003 Independent 26 Mar. i. 6/5 When an aircraft or vessel comes into their radar field, these transmit a series of encrypted queries..in radio bursts lasting a few microseconds.

1935 Fresno (Calif.) Bee Republican 21 Jan. a7/5 It takes very little strength to turn a radio button.

1988 InfoWorld 11 July 58/2 All the standard Mac I/O tools can be incorporated into a Foxbase application: radio buttons, check boxes, pop-up menus, [etc.].

1990 Sunday Oregonian (Portland, Oregon) (Nexis) 28 Jan. r06 The premium stereo offers good sound, although the labels on some of the radio buttons are partially obscured.

2001 Computer Music May 26/2 Select the bitrate from the drop-down menu and then tick radio buttons as required (such as mono or stereo).

1922 News (Frederick, Maryland) 23 Mar. 8/5 There are ammunition cars, a crane car, a kitchen car, a fuel car, a berth car, a staff radio car.

1925 Sci. Amer. Nov. 308/1 The Yard has seven radio-equipped motor cars attached to the Criminal Investigation flying squad... These radio cars not only aid in detecting crime but also perform a helpful service in regulating heavy traffic along the highways.

1967 Listener 19 Jan. 95/2 WINS reporters were there with their radio cars and tape recorders inching the story along every few minutes or so with eye-witness reports, [etc.].

1985 I. Hislop Secret Diary of Lord Gnome Aged 73¾ 32/1 And now, in our radio-car outside Westminster, we've got Tim Ghastly, the junior minister for Environmental Leisure Activities.

2003 N.Y. Times Mag. 5 Oct. 20/2 Let the bankers leave for Stamford; we'll make do with the radio-car drivers, the bartenders and the graphic designers.

1972 Odessa (Texas) Amer. 31 Oct. 2 a/7 [He] said some clothes, a radio cassette and a cassette tape..were taken from his car.

1995 N. Hornby High Fidelity (1996) x. 100 There's no hi-fi, just a little radiocassette and a few tapes, some of which she bought from us.

1967 Fond du Lac (Wisconsin) Commonw. Reporter 12 Dec. 8/4 (advt.) Radio Cassette Player, 20 transistors.

1999 S. L. Kasfir Contemp. Afr. Art i. 35 A second kind of power image employs the paraphernalia of real or imagined Western material culture—radio cassette players, bicycles, sleek motor vehicles, [etc.].

1967 Independent (Pasadena, Calif.) 26 Mar. (Parade section) 21/3 Radio-cassette recorder... You can use the recorder to tape directly from radio or external sources and to play back prerecorded snap–in cartridges.

2001 R. Wallis Lockerbie viii. 82 The police also found a Toshiba radio cassette recorder.

1922 Bicknell (Indiana) Daily News 10 Feb. 4/3 (heading) Boys' radio chatter fills air.

1985 Financial Times 5 Aug. 14/7 The system, which will go into the company's 1,420 black London cabs, does away with the continuous radio chatter and allows drivers to move to the next fare with relative ease.

2007 S. Call Danger Close x. 206 The tanks were firing and all the radio chatter was going crazy all of a sudden.

1921 Los Angeles Times 23 Jan. 9/6 (advt.) Handylite radio clocks.

1932 Winnipeg Free Press 22 Mar. 5/2 We just..set the radio clock at the hour we want to be ‘called’ and sweet music instead of jangling bells will wake us.

1938 Science 1 July (Suppl.) 11/2 Radio clock... Controlled by a master clock at the radio station, signals are sent out at the selected interval.

1970 R. Silverberg If I forget thee, O Jerusalem 1 I was awakened as usual by the sound of my radio-clock, automatically turning itself on to deliver the 8 A.M. news.

1995 Daily Mail (Nexis) 30 Nov. 68 Radio clocks are programmed to take the signal from Rugby as soon as they're switched on.

1964 Times 28 Oct. 9/3 The transistorized radio collar with a built-in aerial is now popular for tracking down migrating herds of deer.

2002 R. F. Dasmann Called by Wild xiv. 149 When he caught a leopard he would immobilize it, put a radio collar around its neck, take various measurements, and then..release it.

1974 Jrnl. Mammalogy 55 428 About half of the data..are from cats of known sex and age that I had radio-collared.

2002 Wanderlust Feb. 110/1 (advt.) We recently radio-collared the first-ever wolf in the area and her transmitter is now providing important conservation information.

1965 Lowell (Mass.) Sun 4 Nov. 44/1 A radio-collared bear was traced and it was found he was within a few feet of hunters.

1994 Outdoor Canada May 14/3 [We] used telemetry equipment to track a female radio-collared cougar.

1912 Sheboygan (Wisconsin) Evening Press 25 June 7/4 A wireless, or radio-compass, has been invented by two Italian naval officers.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) III. 332/2 The modern radio compass uses a nondirectional antenna in combination with a bidirectional loop antenna to provide a unidirectional bearing indication.

2004 Flight Internat. (Nexis) 25 May 38 The company is undertaking an upgrade of 12 Croatian MiG-21bis/UM to UD standard. The Russian-made radar altimeter, autopilot and radio compass are retained.

1924 Washington Post 6 July 13/4 A determined effort to establish two-way radio contact with North American operators before the end of the year.

1962 V. Grissom in J. Glenn et al. Into Orbit 130 I was in radio contact with..the helicopters which were on their way to pick me up.

1975 T. Allbeury Special Coll. v. 34 He had a long radio contact with London and..gave full details.

1997 Independent 30 June 8/2 He was attempting to maintain radio contact with the mortar positions.

1914 Washington Post 11 Oct. 3/8 Such an instance is afforded in the case of the radio control of torpedoes.

1950 Times 9 Nov. 3/5 A radio-controlled pilotless aircraft is by no means new... The new Australian machine, however, almost certainly contains much more complicated radio control equipment.

1954 K. W. Gatland Devel. Guided Missile (ed. 2) v. 130 The task of the bomb-aimer will then be to guide the weapon by remote radio-control.

2007 Modesto (Calif.) Bee (Nexis) 18 May b2 There will be no charge by the club for people to have a chance to fly a radio control plane.

1959 K. Vonnegut Sirens of Titan vii. 121 Without Boaz, their real commander, to radio-control them, they fought bitterly.

1979 Amateur Photographer 30 May 162/3 The Post Office refusing him a license to radio-control a camera.

1999 Scotts of Stow Gift Catal. Christmas 4/1 This clock is radio-controlled by the Rugby signal, accurate to +./−1 second in a million years.

1914 Washington Post 28 Nov. 14/4 Army officers familiar with the performance of his radio-controlled boat.

1976 L. St. Clair Fortune in Death xi. 109 The gates swung wide—radio-controlled.

2003 D. Brown Da Vinci Code (2004) liii. 302 Each of the bank's trucks had been equipped with a radio-controlled homing device, which could be activated remotely from the bank.

1917 Janesville (Wisconsin) Daily Gaz. 1 May 11/1 (advt.) Lost. Ingersol Radio Dial Boy Scout fob.]

1922 Wisconsin State Jrnl. 6 July 4/6 (advt.) Radio headphones—Kellogg... Radio dials, 4 inch.

1939 Fortune Oct. 86/2 New Yorkers just across the Hudson River, however they twiddled their radio dials, could hear nothing intelligible from W2XMN.

1990 C. Paglia Sexual Personae xiii. 358 Twirling the radio dial while travelling the open road, the American driver flies along on a continuous surface of music.

1916 Science 25 Feb. 276/2 The success of the Bureau of Standards in developing a radio-direction finder.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) IV. 232/2 This ground-based radio direction finder, operating at frequencies of 2 to 20 megacycles, is used mainly for navigational assistance in the long-distance en-route zone.

1992 W. F. Buckley WindFall v. 69 If necessary we would home in on Funchal using the Radio Direction Finder.

1919 Syracuse (N.Y.) Herald 11 May 29/7 Radio direction finding, and other modern equipment of this character.

1920 Radio Rev. Oct. 644 Radio direction finding..has become a practical possibility owing to the use of powerful amplifiers.

1974 Encycl. Brit. Macropædia XII. 903/2 Radio direction finding..developed in two ways. First, radio transmitters, or ‘beacons’, were sited..to enable ships or aircraft to fix their positions. Second, ground DF stations that could pick up radio signals sent out by a ship or an aircraft were built.

2000 N.Y. Rev. Bks. 2 Nov. 59/2 The US Navy did this by the well-known procedure of radio direction-finding.

1959 Charleston (W. Va.) Daily Mail 10 June 18/1 Laidley Field could be dumped right in the middle of the radio ‘dish’ and not touch any side.

1977 Nature 9 June 478/1 Australia leapt into the big league of astronomical nations with the building of the giant 64-metre radio dish at Parkes, New South Wales.

1995 Pop. Sci. Sept. 82/1 (caption) The data from these 10 telescopes is electronically blended to create the effect of a huge single radio dish.

1928 C. Størmer in Nature 17 Nov. 768/1 (heading) Radio echoes and magnetic storms.

1947 Sci. News 5 36 Radio echoes do not come from the meteors themselves but from the lengthy filament of highly conducting gas which forms their trail.

1996 New Scientist 22 June 16/1 Called Lake Vostok, the lake..is one of 77 lakes known to lie under the Antarctic ice sheet. It came to light during radio-echo experiments in the late 1970s.

1982 Billboard 3 July 40/1 The [DJ mix] contest calls for a 15 to 17 minute mixed program.., and a five minute radio edit.

1990 N.Y. Times 10 June h26/3 Along with the album version, a 12-inch single (or its CD counterpart) is likely to include a radio edit of the song (shorter, strictly business).

2012 Manch. Evening News (Nexis) 25 Sept. 11 He played a radio edit of the famously foul-mouthed track and joked that if he had played the full version it would have been the world's shortest stint on the Radio 1 breakfast show.

1934 Geografiska Annaler 16 107 Thus comparisons of compass directions and great circle lines in studies of terrestrial magnetism and electricity, seismology and isostasy, radio emission and skip distances, etc. would all be simplified on maps of the same size and similar form.

1958 Listener 27 Nov. 870/1 The sun spots and flares which occasionally appear on the solar surface are associated with large and irregular increases in the solar radio emissions.

1992 Astron. Now July 15/3 Spacecraft have..added a new dimension to the science with the occultation of the radio emission from the spacecraft as it passes behind or reappears from behind the planet.

2003 New Scientist 5 July 8/4 Project leader Jill Tarter and her colleagues will investigate the size and age of M-stars to deem whether it is worth scanning them for radio emissions and the possibility of intelligent beings.

1910 To regulate Radio Communication (Hearings on Bill (S. 7243) to regulate Radio Communication before U.S. Senate Commerce Comm.) 19 It would require the cooperation of several skilled radio engineers to locate each apparatus.

1912 Electrician & Mechanic Aug. 140/1 The Institute of Radio-Engineers comprises the bodies formerly known as the Society of Wireless Telegraph Engineers and the Institute of Wireless Engineers.

1937 Discovery Apr. 111/1 Radio engineers have recorded an increasing number of sudden and complete fadings affecting reception on short-wave wireless transmission.

1974 Encycl. Brit. Macropædia XV. 429/2 Marconi's faith in the successful commercial operation of the system was more than justified, and radio engineers elsewhere were quick to change from skepticism to enthusiasm.

1992 Alton Herald (BNC) 3 Apr. 12 Urgently needed is a BBC radio engineer, maybe one who has recently retired.

1915 Atlanta (Georgia) Constit. 27 June 8/4 The course which young Ford took included the study of radio engineering.

1942 P. C. Sandretto Princ. Aeronaut. Radio Engin. p.v It is necessary to explain how I determined the point where ordinary radio engineering ends and aeronautical radio engineering begins.

1975 D. G. Fink Electronics Engineers' Handbk. p. xiii Earlier important handbooks..treated the field primarily from the point of view of the first important application in the field—radio engineering.

1989 Encycl. Brit. XVIII. 559/1 The IRE Group System attracted many specialists who would not otherwise have identified themselves with radio engineering.

1927 Chron.-Telegram (Elyria, Ohio) 10 Nov. 5/2 Radio fans who have experienced listening in on a prize fight, only to have the noise fade out as the knock-out came,..may have the Oberlin college physics department to thank in part for the elimination of the radio fade-out.

1937 Nature 9 Jan. 61/2 (heading) Solar eruptions and radio fade-outs.

1989 Financial Post (Canada) (Nexis) 21 Nov. i. 19 You can hook up your PC to a cellular phone and send (data) over the airwaves, but there are problems with radio fade-out.

1922 Daily Kennebec Jrnl. (Augusta, Maine) 13 Apr. 13/2 I do not feel that the columns of this paper are quite the proper place for arguments as to who is a ‘Radio Amateur’ and who falls in the class of the ‘Radio Ham’.

1971 Daily Tel. 13 Sept. 1/8 The radio ham..heard two men planning the raid over short-wave radio sets.

2004 ‘Dr. K.’ Hackers' Tales ii. 39 Apart from computers, I used to be a radio ham, but life got too busy for it and when I moved to London, space got too small.

1922 Times 7 Apr. 10/2 She had arranged the concert in aid of the English fund for the Sunday afternoon wireless concerts transmitted from The Hague by the Nederlandsche Radio Industry.

1926 Wireless World 18 Aug. 229/1 American business men engaged in the radio industry.

1951 M. McLuhan Mech. Bride 22/2 This is not a situation peculiar, for example, to the radio, movie or book industries.

1992 Sight & Sound July 19/1 As the radio industry has known for a long time, opportunities for personal payola can never be completely controlled.

1970 Los Angeles Times 29 Nov. 8 b/1 Tommy was the hippest radio jock in town.

2005 Z. Smith On Beauty 424 The radio jocks pushed the country to extremity.

1948 Gaz. & Bull. (Williamsport, Pa.) 15 May 12/5 The radio jockey Tod Sloan.

2004 Hindu (Nexis) 23 Aug. Radio jockeys will interview senior police officials.

1914 Oakland (Calif.) Tribune 15 Aug. 3/5 No further issuance of private radio licenses will be made until the cessation of hostilities by the belligerent nations.

1928–9 T. Eaton & Co. Catal. Fall–Winter 245/3 Radio License... The law requires that every radio set be licensed.

1968 B. Took & M. Feldman in B. Took & M. Coward Best of ‘Round The Horne’ (2000) 4th Ser. Programme 15. 237/2 On that shattering anti-climax we end this week's production, thereby avoiding hordes of irate Scotsmen from descending upon the BBC and tearing up their radio licences—last year's, of course.

1985 Financial Times (Nexis) 6 Nov. ii. 21 GenCorp has been fighting costly legal battles for 20 years to retain its TV and radio licences following allegations of questionable business practices.

2002 Straits Times (Singapore) (Nexis) 9 Apr. Mr Lee had asked why motorists still need to pay for radio licences when radio broadcasts are available for free via mobile phones and over the Internet.

1922 Los Angeles Times 11 Apr. ii. 1/8 The ballroom of the Alexandria will resound with the voices of ‘Radioland’ at noon luncheons both today and tomorrow.

1931 Liberty (Chicago) 14 Mar. 74/1 My larger audience in radioland would think that they were listening in on a wow.

2006 Daily Tel. (Sydney) (Nexis) 26 Aug. 25 It's not the most unusual thing in radioland for a station to throw a party for a party's sake.

1978 Nature 14 Sept. 91/3 Less than 10% of these [quasi-stellar objects] are turning out to be ‘radio-loud’.

2004 New Scientist 21 Aug. 14/3 Some astronomers think spinning black holes may cause jets in radio-loud quasars.

1985 Astrophysical Jrnl. 288 122 Our data imply that the relative sizes of the companions are important regarding radio-loudness [of galaxies], but the importance of companion proximity is less clear.

2002 New Astron. Rev. 46 211 This strongly suggests a link between radio-loudness and black hole mass.

1912 Oakland (Calif.) Tribune 10 Mar. 33/6 The value of the Alaska stations is being shown at the present time, five thousand words approximately being handled by the Sitka radio men since the break in the Sitka-Seattle cable occurred earlier in the month.

1928–9 T. Eaton & Co. Catal. Fall–Winter 245/3 Our radio goods..are purchased and inspected by qualified radio men.

1945 M. Lowry Let. 6 June (1967) 46 A great friend of mine who was at college with me—a well-known radioman in Canada.

1977 Time 3 Jan. 35/2 He lied about his age to get into the Navy and served as a radioman in the Pacific during World War II.

1999 H. Marks in S. Champion Fortune Hotel 37 The bar's clientele..believed the radio man and hastily began washing away tropical-storm phobia with gallons of white rum.

1942 Hispania 25 374 Her radio map of Latin America (end-papers) and list of stations with call-letters and frequencies.

1959 R. D. Davies & H. P. Palmer Radio Stud. of Universe vi. 92 By the year 1944..[Reber] had completed a search of the sky at this wavelength and obtained the first radio map of the sky.

1978 J. M. Pasachoff & M. L. Kutner University Astron. viii. 221 (caption) A radio map of the sun made at a wave~length of 2·8 cm with the 100-meter dish of the Max Planck Institute for Radio Astronomy.

1997 Astron. Jrnl. 114 48 Radio maps of MG 0751 +2716 show four lensed images, which, at higher resolution, are resolved into long arcs of emission.

1922 Charleston (W. Va.) Daily Mail 22 Nov. 7/2 Even beyond the education spread directly through the radio microphone there are means of helping the radio fan and his friends increase their worldly knowledge.

1934 Times 8 Oct. 14/4 While the bombardment went on he stood calmly by a radio microphone, sending out news of the passing events.

1957 Electronic & Radio Engineer Feb. 48/2 This radio link, or ‘radio microphone’ as it is known in the B.B.C., has been in considerable use now for over a year and in many cases has proved extremely successful.

1999 Independent 31 Mar. ii. 11/4 Actors performing in the National Theatre's Olivier auditorium are now required to wear radio microphones.

1926 Nevada State Jrnl. 9 Feb. 8/2 The people who acted as entertainers would sing into the transmitter of the telephone as they do into the ‘radio mike’ today.

1974 Listener 14 Mar. 330/3 Rix..had me fitted with a radio mike, which is..a small and highly sensitive transmitter, enabling me to record impressions unobtrusively.

1994 C. Grant X-Files: Goblins xx. 227 He took the radio mike and called in: ‘Maddy, this is Spike.’

1926 Oxnard (Calif.) Daily Courier 20 Feb. 2/1 (headline) Radio navigation.

1951 Sci. News 22 110 Positions were fixed by radio navigation.

2001 Today's Pilot Feb. 68/3 The Non-Directional Beacon is one of the oldest and simplest forms of radio navigation and is based on the precept of a ground station that simply transmits a signal in all directions.

1921 Brit. Pat. 161,448 (title) Improvements in or relating to radio-navigational systems.

1978 R. V. Jones Most Secret War xxiv. 210 The drive at last started for us to emulate the Germans in their radio navigational techniques.

2006 Daily Tel. (Nexis) 24 Mar. (Motoring section) 23 [The new Kiama bypass] had us scratching our heads as to where we were on the car's radio navigational system. To our amusement, the obviously outdated guidance map had the car hurtling across open pastures.

1922 Decatur (Illinois) Daily Rev. 25 Oct. 11/4 Arrangements are being made here to spread a radio net over the Pacific Northwest to catch criminals and to use the wireless to trap automobile speeders.

1976 C. Egleton State Visit ix. 84 A re-broadcast system had been installed which allowed them to monitor the police radio net.

1991 Yachting World (BNC) Feb. Almost exactly in the middle of the Atlantic Ocean..the radio net for the Atlantic Rally for Cruisers was brought to life on 10 December with a dramatic mayday.

1923 Iowa City Press-Citizen 18 Sept. 1/5 The Wright station is a component part of the regular army radio network which covers not only the United States, but foreign possessions, and all naval vessels.

1935 C. G. Burge Compl. Bk. Aviation 503/1 Air transport is essentially international in character, and the organization and control of the radio networks, if they are to benefit air transport, must also be applied on an international basis.

1966 N. Wymer From Marconi to Telstar viii. 85 Since the war all the great nations have steadily expanded their overseas services until today the radio network covers the entire world.

2003 Church Times 10 Jan. 14/4 His radio network could unite families around their hearthside.

1933 Gen. Electr. Rev. 36 201/1 The radio-noise meter..detects radio noise, measures its intensity, and locates its source.

1946 Nature 17 Aug. 234/1 The solar radio noise from sunspots is also characterized by strong fluctuations.

1990 Yachting Feb. 80/2 Proper grounding and elimination of radio noise in the environment is a must.

1994 J. Cohen & I. Stewart Collapse of Chaos ii. 47 The second observation is the cosmic background radiation, an almost uniform level of radio noise corresponding to a temperature of 3°K.

1949 Sci. Monthly May 301/2 The Cornell Radio Observatory.

1953 Jrnl. Atmospheric & Terrestr. Physics 3 22 It might be desirable to keep an auroral radio watch on the sky at one or more radio observatories.

1995 Pop. Sci. Sept. 83/3 For some research, the Very Long Baseline Array can work with other radio observatories, such as the Very Large Array in New Mexico.

1954 Daily Rev. (Hayward, Calif.) 18 May 12/5 (headline) Oakland firm will produce radio pagers. Now you can leave the office and still keep in touch with those never-ending but important phone calls.

1964 Daily Times-News (Burlington, N. Carolina) 3 Feb. 12 c/1 An additional radio pager for the doctor's paging system, which enables local doctors..to be on immediate call no matter where they may be located.

2002 W. Self Dorian (2003) x. 123 The pockets of their white coats bulged with radio pagers, stethoscopes, Biros and chewing gum.

1929 Olean (N.Y.) Herald 20 Nov. 5/1 A radio paging system to expedite communication with members of its staff whose services are needed quickly has been installed in the University of Pennsylvania Hospital.

1946 in Industr. Arts Index (1947) 34 1184/1 (title) Radio paging; mobile message service introduced by Telephone answering service.

1973 Physics Bull. Mar. 181/3 This new service, radio paging, is the first in the UK in which a simple telephone call over the ordinary public network will activate pocket ‘bleepers’.

1998 Extel Examiner (Nexis) 2 Dec. A depressed market for radio paging was compounded by regulatory delays and a slow take-up of our new radio based products.

1922 Chicago Tribune 5 Apr. 15/1 They have followed it with many other models ranging from a crude crystal detector to a radio phonograph.

1986 D. Nabokov tr. V. Nabokov Enchanter (1987) iv. 62 At night, when everything had quieted down—the radio phonograph, the water in the bathroom,..—when it had all grown totally still, he would lie supine and evoke the one and only image.

1957 Florence (S. Carolina) Morning News 9 Apr. 3/6 You could easily swallow this radio pill, demonstrated today at the Rockefeller Institute.

1957 Nature 4 May 898/1 This ‘radio pill’, as it is termed, was designed by Dr. V. K. Zworykin and developed by engineers of the Radio Corporation of America at Camden, New Jersey.

1970 Sci. Jrnl. June 84/1 Pressure changes within the vagina and uterus have also been measured, by using a tiny device known as the radio-pill.

1973 Powder Technol. 7 263/1 The radiopill, which is basically a pressure-measuring device, can be modified as a flow tracer to investigate the velocity fields.

1993 Independent 22 Feb. 11/1 He has swallowed a radio pill, which transmits temperature readings as it passes through his body.

1924 Lincoln (Nebraska) State Jrnl. 13 May 11/3 A sound reprimand, followed by a promise of amnesty, was given to each of Germany's radio pirates personally by Under Secretary of State Dr. Bredow.

1999 Washington Post (Nexis) 2 Apr. a10 The caller spoke for the Steal this Radio collective, a band of unlicensed microbroadcasters—a k a radio pirates—who operated a station at 88.7 FM.

1908 Syracuse (N.Y.) Herald 22 Nov. 14/2 Mr. Baum comes to Syracuse at the time his new radio-play is to appear at the Wieting.

1975 L. Bangs Mainlines, Blood Feasts & Bad Taste (2003) 203 This migraine..will get zero radio play and bomb so bad it'll make Berlin look like an Elton John album.

1992 A. V. Roberts Morning's Gate xvi. 281 She was an actress whose rich, throaty voice was much in demand for radio plays and television voice-overs.

2002 N.Y. Times (National ed.) 3 Feb. ii. 28/2 [Recording companies] pay millions of dollars in independent promotion fees to consultants who mysteriously ensure radio play.

1929 Proc. IRE 17 2034 The results of further observations on radio transmission phenomena associated with the reflections of radio pulse and spark signals are outlined.

1945 Nature 15 Sept. 319/2 The ‘H’ and ‘Oboe’ systems, in which the primary radio pulses ‘interrogating’ the mobile craft automatically release from it a series of reinforced, coded, and conveniently frequency-displaced reply pulses.

1993 Time 22 Mar. 63/3 The dead star generates an enormous magnetic field, which in turn sends out powerful radio pulses (hence the name pulsar).

2000 New Scientist 10 June 5/3 NASA's image spacecraft, which has antennas longer than the Empire State Building is tall, uses radio pulses to image the plasmasphere.

1959 Science 13 Nov. 1312/3 Special rules were promulgated to establish a radio quiet zone for both Green Bank and Sugar Grove.

1965 Astrophysical Jrnl. 141 1560 Members of the class called here quasi-stellar galaxies..resemble the quasi-stellar radio sources..in many optical properties, but they are radio-quiet.

2005 Monthly Notices Royal Astron. Soc. 361 633 There may be no essential difference between radio-loud and radio-quiet quasars; radio-loudness may simply be a function of the epoch at which the source is observed.

1971 D. W. Sciama Mod. Cosmol. v. 73 It must be emphasised that the radio-quietness of these new objects is only relative.

1995 Astrophysical Jrnl. 446 759 The possible relevance of low shock speeds in some mass-loaded isothermal winds for radio quietness is mentioned.

1943 Sheboygan (Wisconsin) Press 19 Mar. 3/4 Cpl. Conrad Fritz..has been selected to attend an enlisted specialist school under war department direction to pursue a course in radio radar.

1949 Sun (Baltimore) 26 July 18/3 The wing tip ‘radomes’, as the compact radio-radar installation is called, were developed for the Air Force.

1966 M. Woodhouse Tree Frog viii. 62 A radio-radar control system with a range of seven hundred miles.

1976 G. H. Morrison in L.-H. Lee Characterization of Metal & Polymer Surfaces I. 362 An examination of steel strands in the cables suspending a 525-ton feed platform in the world's largest radio-radar telescope at Arecibo, Puerto Rico.

2002 Jrnl. Mil. Hist. 66 121 The aircraft and radio/radar industries..shared second priority.

2006 Space Daily (Nexis) 13 Nov. The Arecibo Observatory's 305-meter diameter antenna, the world's largest and most sensitive radio-radar telescope.

1914 Electr. World 30 May 1246/2 Frog leg Radio Recorder. The nervous and muscular system of the frog has been famous as a sensitive detector of electrical impulses ever since the days of Galvani.

1921 Sandusky (Ohio) Star Jrnl. 10 Sept. 3/1 A radio recorder which has accurately recorded messages from Lyons, France,..was first developed for recording radio time signals.

1950 Mod. Lang. Jrnl. 34 638 My inexpensive radio-recorder has supplied me with current short-wave broadcast material for playback.

2006 Miami Herald (Nexis) 11 June 12 The thief stole a Dishman CD player and a radio recorder together valued at $179.

1917 Gettysburg (Pa.) Times 2 Nov. 4/3 The radio shack called up the tube that the steamer Kioto was torpedoed 20 miles southwest.

1939 C. Simak in Astounding Sci.-Fiction Feb. 59/1 As he spoke, the lock of the radio shack opened and a spacesuited figure strode across the field to meet them.

1991 Dominion (Wellington) 9 Nov. 13 They ordered me out of my cosy radio shack and sent me to the irascible company of ring-bolt kickers (seamen) on the upper deck.

1921 Oxnard (Calif.) Daily Courier 7 June 2/4 Radiophone is the answer—the game being a ‘stunt’ of the radio show on the Hotel Pennsylvania roof.

1922 Moving Picture Stories 4 Aug. 22/2 When the Women's Radio League of America some months ago asked me to join them and appear at their exhibition at a radio show, I thought it a unique invitation.

1955 Ann. Reg. 1954 402 There were on exhibition at the radio show..many television receivers designed for two-band or multi-channel reception.

1999 D. Haslam Manchester, Eng. vi. 154 Although at first not a big fan of the new dancefloor sounds, he invited Wilson to do mixes for the radio show.

1912 Congress. Rec. 8 Aug. 10502/2 These signals mentioned in the bill mean radio signals.

1913 N.Y. Times 23 Mar. 1/2 Faint radio signals were received today from the Eiffel Tower station in Paris by the Arlington station here, but there were no coherent messages.

1937 Discovery Jan. 3/2 Radio signals can travel round the world and not be lost in space as would be the case if the ionosphere did not exist.

1969 Times 16 Jan. 4/7 Measurements of the radio signals from sulphur hydride may be a valuable check of estimates of the amount of sulphur in interstellar space.

2002 K. Warwick I, Cyborg v. 63 The RFID would..send a unique identifying coded radio signal to the computer every time it passed through any doorways with the large coils of wire in place.

1919 Warren (Pa.) Morning Chron. 16 June (headline) Atlantic bridged by British fliers; Alcock and Brown get $50,000 prize... Radio silence explained by fact that wireless propellor blew off soon after leaving New Foundland.

1959 R. Collier City that wouldn't Die vii. 106 [He] exultantly broke radio-silence: ‘I've got two dirty great Huns in my sights!’

1977 Washington Post (Nexis) 13 Sept. d1 ‘We'll beat 'em Tuesday 'cause we're not playing in their telephone booth..,’ said crotchety Thurman Munson, breaking radio silence after six weeks of vowing he would not make another public statement for the rest of the season.

2007 N.Y. Times (National ed.) 24 June iii. 8/2 Bausch officials say they had to maintain radio silence with analysts and money managers because they were constrained by the accounting inquiry and a lack of timely securities filings.

1966 Rep. Progr. Physics 29 542 Quasi-stellar galaxies, the radio-silent but optically brilliant objects recently discovered.

1976 B. Lecomber Dead Weight xiii. 154 Filing incomplete flight plans and going radio-silent for long periods is bloody silly.

1994 Queen's Q. Fall 660 With ‘Command’ still radio-silent, the steam had evaporated from Montgomery's urging to crack about and hit the enemy for six.

1998 Mod. Astronomer Mar. 53/1 Geminga is probably the prototype of millions of radio-silent neutron stars in the Milky Way Galaxy.

1955 Sci. Monthly June 338/1 Very few of the conspicuous stars and nebulae of our Milky Way system are among the recognized objects in the radio sky.

1959 R. D. Davies & H. P. Palmer Radio Stud. Universe iv. 46 The early maps of the radio sky were made with small aerials which could not readily distinguish radio sources from the background of radio emission.

1995 R. C. Smith Observational Astrophysics vi. 160 The appearance of the radio sky depends strongly on whether it is observed in the 21 cm line of atomic hydrogen or in the continuum.

1931 Flight 23 278/1 The trials proceeding in America with a radio-sounder have been successful and appear to promise good results.

1969 Times 20 Jan. 8/1 Alouette 1, the first of a series of satellites built in Canada..is equipped with a radio sounder which probes the atmosphere beneath the satellite.

2004 Canberra Times (Nexis) 18 Jan. a20 Belconnen Cars and Boats can do full fit-ups including fitting of accessories such as bilge pumps, radio sounders, canopies and rod holders.

1922 Daily Kennebec Jrnl. (Augusta, Maine) 10 July 6/2 It is said the navy has perfected a radio sounding device that will register the depths of the ocean.

1929 Bull. Amer. Meteorol. Soc. 10 220 The radio sounding balloons to be released from the Graf Zeppelin will employ a radio sending device developed under the direction of P. A. Moltchanoff.

1958 A. A. Miller & M. Parry Everyday Meteorol. i. 29 The radio-sounding balloon..has the advantage that it need not be visible.

1963 Times 31 May 16/2 A form of radio sounding, similar to radar, may provide a new means of charting the depth of rock surfaces covered by snow and ice, as in Greenland and Antarctica.

1993 Atmospheric Res. 30 1 Atmospheric profiles of temperature and humidity obtained from radiosoundings on cloud-free days have been used.

1927 Davenport (Iowa) Democrat & Leader 30 Dec. 23/4 During 1928 the spotlight of public interest in radio will turn upon the long reaches of the radio spectrum below the broadcasting band.

1964 Times 26 Oct. 10/4 The unusual nature of the radio spectra of these sources was noted last year by an Anglo-American team of radio astronomers.

1992 Economist 28 Mar. 89/1 All these services need an allocation from governments of frequencies in the radio spectrum.

2005 Guardian 11 Aug. (Life section) 17/1 Independent micro-cells have not been possible before, because the GSM radio spectrum is licensed to the big operators.

1910 L. De Forest in N.Y. Times 27 Mar. 2/6 This message marks the opening of the new Manhattan Life Radio Station and the sparkless wireless service between New York and Philadelphia.

1935 Ann. Amer. Acad. Polit. & Social Sci. 177 74/1 American radio stations are beginning to distinguish between the quality audience and the quantity audience.

1943 National Geographic Mag. Dec. 689/2 Announcers for three-fifths of the earth's radio stations broadcast in English.

1968 A. Diment Bang Bang Birds iii. 41 One of the local radio stations gave me the news.

2006 N.Y. Rev. Bks. 21 Sept. 52/3 Apache helicopters set off to attack the Palestine Authority's police, TV, and radio stations.

1954 Science 30 Apr. 589/2 The high resolution offered by an eclipse, coupled with the fact that the radio sun is little larger than the moon, makes such measurements ideal for studying the brightness distribution over the surface of the sun.

1965 M. R. Kundu Solar Radio Astron. i. 1 Decimeter-wave observations of the radio sun during a solar eclipse.

1996 Indian Jrnl. Physics B. 70 169 The results..indicate that the ratio of the diameters of the radio Sun to that of the optical Sun is 1.04.

1915 Washington Post 1 Oct. 3/1 Extraordinary feat of radio talk to Mare Island announced Wednesday night.

1926 New Yorker 1 May 23/2 (caption) Let me close this little radio talk by urging you once more never to expose the silk-like texture of the face to the injurious effects of soap and water.

2001 T. Winton Dirt Music (2003) 339 Georgie switched on the VHF and caught the vibe on the air. Clearly he'd found the mother lode; he'd killed the pig. You could hear it in the urgency and awe of the radio talk.

2003 P. Robinson How Ronald Reagan changed my Life iv. 86 I wrote more than 150 speeches, radio talks, toasts, and sets of talking points, at least half of them forgettable.

1956 Hammond (Indiana) Times 7 Oct. a4/1 In Trenton I did a radio talk show—three hours of talk.

2000 P. Beatty Tuff i. 4 Chilly Most was..pontificating on the idiocy of the incumbent mayor guesting on a radio talk show, taking credit for the city's falling crime rates.

1970 Independent Press Telegram (Long Beach, Calif.) 15 Mar. 20/6 Censorship is discussed by radio talk show hosts Mary Gray, Michael Jackson, [etc.].

1996 F. Popcorn & L. Marigold Clicking ii. 213 Radio talk show host Howard Stern was on the air when a man..called in..to inform everyone that he was teetering on a span of the George Washington Bridge while contemplating a fatal jump.

1946 Trans. Amer. Inst. Electr. Engineers 65 865/1 The accuracy and stability of the airborne radio telemetering equipment depend upon a high degree of stability of the plate supply.

1985 Canad. Jrnl. Earth Sci. 21 1033 A seismic refraction survey using a 32 L air gun and a radio telemetering sonobuoy system was carried out in the Strait of Georgia with the objective of..determining the upper crustal structure.

1931 Times 2 Oct. 9/1 The appearance of a radio van on ‘investigation service’ in any district almost invariably results in an extraordinary rise in licences.

1950 J. Flanner in New Yorker 8 Apr. 79/1 On the street, crowds had collected and a radio van had arrived.

1955 Daily Rev. (Hayward, Calif.) 7 May 1/7 Radio vans were circulating through Saigon beaming anti-French slogans from loudspeakers.

1977 World (Oak Park, Illinois) 9 Nov. (World section) 14/2 A live radio broadcast by Johnny Todd from the WJDD radio van.

2000 P. C. Roe Dragon Strikes viii. 158 Peng Dehuai had turned over supervision of the deployment to his chief of staff and proceeded ahead to confer with the North Koreans. En route, he lost contact with his radio van.

2006 Birmingham Post (Nexis) 4 Oct. 9 Being interviewed live on the Today programme sitting in a radio van parked on my front drive was a daunting experience.

1915 Cook County (Illinois) Herald 19 Mar. 7/4 (heading) Earth catches radio wave. Experiments demonstrate that aerial antennae are not needed to transmit wireless messages.

1942 J. B. Hoag Basic Radio xxxiv. 288 At certain airports, a radio wave is transmitted..to provide a glider path for ‘blind’ or instrument landing.

1991 S. J. Gould Bully for Brontosaurus xxiv. 493 Probes have now mapped the Venusian surface with radio waves that can penetrate the clouds.

2006 A. Davies Goodbye Lemon i. 42 I hold the keyless entry remote high above my head..as if the radio waves might spill out groundward in the manner of water from a cup.

1922 Science 17 Nov. 564/2 The Bureau of Standards has developed a very precise method of standardization of radio wave lengths and frequencies.

1929 Ann. Amer. Acad. Polit. & Social Sci. 142 10/1 By listening in..on the radio wavelength of the Catalina link, he could overhear the family conversation on the coast of California.

1972 Sci. Amer. Aug. 51/3 Neutral atomic hydrogen emits and absorbs radiation at the radio wavelength of 21 centimeters.

1991 C. A. Ronan Nat. Hist. Universe 66/2 The jet can be seen optically, as well as detected at radio wavelengths.

2002 Astron. in UK 7/2 At radio wavelengths, radiation can be produced by high-energy electrons moving in a magnetic field.