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- Bellini–Tosi_direction_finder abstract "A Bellini–Tosi direction finder (B–T or BTDF) is a type of radio direction finder (RDF), which determines the direction to, or bearing, of a radio transmitter. Earlier RDF systems used very large rotating loop antennas, which the B–T system replaced with two fixed antennae and a small rotating loop, known as a radiogoniometer. This made RDF much more practical, especially on large vehicles like ships or when using very long wavelengths that demand large antennae.BTDF was invented by a pair of Italian officers in the early 1900s, and is sometimes known as a Marconi–Bellini–Tosi after they joined forces with the Marconi Company in 1912. BTDF was the most prevalent form of naval direction finding from the 1920s to well into the 1980s, and were a used as a major part of early long-distance air navigation systems from the 1930s until after World War II. BTDF systems were also widely used for military signals intelligence gathering.During the war, new techniques like huff-duff began to replace radiogoniometers in the intelligence gathering role, reducing the time needed to take an accurate fix from minutes to seconds. The ability to inexpensively process radio signals using microcontrollers allowed pseudo-doppler direction finders to take over most of the radiogoniometer's remaining roles from the 1980s. In spite of seeing little use today, the original antennae of BTDF systems can still be seen on many ships and boats.".
- Bellini–Tosi_direction_finder thumbnail Radiogoniometer_RN_S25_internal_workings.jpg?width=300.
- Bellini–Tosi_direction_finder wikiPageExternalLink books?id=SYFTAQAAQBAJ.
- Bellini–Tosi_direction_finder wikiPageExternalLink books?id=amc1AKYr4LgC&pg=PA188.
- Bellini–Tosi_direction_finder wikiPageExternalLink books?id=giYDAAAAMBAJ&pg=PA451.
- Bellini–Tosi_direction_finder wikiPageExternalLink 22sec3.
- Bellini–Tosi_direction_finder wikiPageExternalLink 1922c.pdf.
- Bellini–Tosi_direction_finder wikiPageExternalLink ctm-10232a-18.pdf.
- Bellini–Tosi_direction_finder wikiPageID "43325756".
- Bellini–Tosi_direction_finder wikiPageLength "26739".
- Bellini–Tosi_direction_finder wikiPageOutDegree "65".
- Bellini–Tosi_direction_finder wikiPageRevisionID "679051156".
- Bellini–Tosi_direction_finder wikiPageWikiLink AM_broadcasting.
- Bellini–Tosi_direction_finder wikiPageWikiLink Air_navigation.
- Bellini–Tosi_direction_finder wikiPageWikiLink Amateur_radio_operator.
- Bellini–Tosi_direction_finder wikiPageWikiLink Antenna_(radio).
- Bellini–Tosi_direction_finder wikiPageWikiLink Antenna_factor.
- Bellini–Tosi_direction_finder wikiPageWikiLink Australia.
- Bellini–Tosi_direction_finder wikiPageWikiLink Bearing_(navigation).
- Bellini–Tosi_direction_finder wikiPageWikiLink Burst_encoding.
- Bellini–Tosi_direction_finder wikiPageWikiLink Capacitance.
- Bellini–Tosi_direction_finder wikiPageWikiLink Category:Radio_direction_finding.
- Bellini–Tosi_direction_finder wikiPageWikiLink Cathode_ray_tube.
- Bellini–Tosi_direction_finder wikiPageWikiLink Charleville,_Queensland.
- Bellini–Tosi_direction_finder wikiPageWikiLink Dipole_antenna.
- Bellini–Tosi_direction_finder wikiPageWikiLink Doppler_direction_finder.
- Bellini–Tosi_direction_finder wikiPageWikiLink Electron.
- Bellini–Tosi_direction_finder wikiPageWikiLink Faradays_law_of_induction.
- Bellini–Tosi_direction_finder wikiPageWikiLink Great_circle.
- Bellini–Tosi_direction_finder wikiPageWikiLink Ground_wave_propagation.
- Bellini–Tosi_direction_finder wikiPageWikiLink Guglielmo_Marconi.
- Bellini–Tosi_direction_finder wikiPageWikiLink Heinrich_Hertz.
- Bellini–Tosi_direction_finder wikiPageWikiLink High-frequency_direction_finding.
- Bellini–Tosi_direction_finder wikiPageWikiLink High_frequency.
- Bellini–Tosi_direction_finder wikiPageWikiLink Horizon.
- Bellini–Tosi_direction_finder wikiPageWikiLink ITT_Corporation.
- Bellini–Tosi_direction_finder wikiPageWikiLink Inductance.
- Bellini–Tosi_direction_finder wikiPageWikiLink Ionosphere.
- Bellini–Tosi_direction_finder wikiPageWikiLink Kurier_system.
- Bellini–Tosi_direction_finder wikiPageWikiLink Kurzsignale.
- Bellini–Tosi_direction_finder wikiPageWikiLink Lighthouse.
- Bellini–Tosi_direction_finder wikiPageWikiLink Longwave.
- Bellini–Tosi_direction_finder wikiPageWikiLink Loop_antenna.
- Bellini–Tosi_direction_finder wikiPageWikiLink MacRobertson_Air_Race.
- Bellini–Tosi_direction_finder wikiPageWikiLink Marconi_Company.
- Bellini–Tosi_direction_finder wikiPageWikiLink Medium_wave.
- Bellini–Tosi_direction_finder wikiPageWikiLink Melbourne.
- Bellini–Tosi_direction_finder wikiPageWikiLink Microcontroller.
- Bellini–Tosi_direction_finder wikiPageWikiLink Morse_code.
- Bellini–Tosi_direction_finder wikiPageWikiLink Officer_(armed_forces).
- Bellini–Tosi_direction_finder wikiPageWikiLink Phase_(waves).
- Bellini–Tosi_direction_finder wikiPageWikiLink Pseudo-doppler_direction_finder.
- Bellini–Tosi_direction_finder wikiPageWikiLink RMS_Mauretania_(1906).
- Bellini–Tosi_direction_finder wikiPageWikiLink Radio_direction_finder.
- Bellini–Tosi_direction_finder wikiPageWikiLink Shortwave_radio.
- Bellini–Tosi_direction_finder wikiPageWikiLink Signals_intelligence.
- Bellini–Tosi_direction_finder wikiPageWikiLink Skywave.
- Bellini–Tosi_direction_finder wikiPageWikiLink Solenoid.
- Bellini–Tosi_direction_finder wikiPageWikiLink Supermarine_Spitfire.
- Bellini–Tosi_direction_finder wikiPageWikiLink Triode.
- Bellini–Tosi_direction_finder wikiPageWikiLink USS_Wyoming_(BB-32).
- Bellini–Tosi_direction_finder wikiPageWikiLink United_States_Navy.
- Bellini–Tosi_direction_finder wikiPageWikiLink Very_high_frequency.
- Bellini–Tosi_direction_finder wikiPageWikiLink World_War_II.
- Bellini–Tosi_direction_finder wikiPageWikiLink Zeppelin.
- Bellini–Tosi_direction_finder wikiPageWikiLink File:20070917-Piraeus-TB_AgiaVarvara.jpg.
- Bellini–Tosi_direction_finder wikiPageWikiLink File:B-T-MFDF-AWA-brochure-CAHS-625.jpg.
- Bellini–Tosi_direction_finder wikiPageWikiLink File:Japanese_Adcock_Antenna_Ravaul_CINCPAC-5-45-3.jpg.
- Bellini–Tosi_direction_finder wikiPageWikiLink File:Radiogoniometer_RN_S25_internal_workings.jpg.
- Bellini–Tosi_direction_finder wikiPageWikiLink File:Wade_performing_RDF.jpg.
- Bellini–Tosi_direction_finder wikiPageWikiLinkText "Bellini–Tosi direction finder".
- Bellini–Tosi_direction_finder wikiPageUsesTemplate Template:Cite_book.
- Bellini–Tosi_direction_finder wikiPageUsesTemplate Template:Cite_journal.
- Bellini–Tosi_direction_finder wikiPageUsesTemplate Template:Convert.
- Bellini–Tosi_direction_finder wikiPageUsesTemplate Template:Efn.
- Bellini–Tosi_direction_finder wikiPageUsesTemplate Template:Notelist.
- Bellini–Tosi_direction_finder wikiPageUsesTemplate Template:Reflist.
- Bellini–Tosi_direction_finder wikiPageUsesTemplate Template:Sfn.
- Bellini–Tosi_direction_finder subject Category:Radio_direction_finding.
- Bellini–Tosi_direction_finder hypernym Finder.
- Bellini–Tosi_direction_finder comment "A Bellini–Tosi direction finder (B–T or BTDF) is a type of radio direction finder (RDF), which determines the direction to, or bearing, of a radio transmitter. Earlier RDF systems used very large rotating loop antennas, which the B–T system replaced with two fixed antennae and a small rotating loop, known as a radiogoniometer.".
- Bellini–Tosi_direction_finder label "Bellini–Tosi direction finder".
- Bellini–Tosi_direction_finder sameAs Q9065684.
- Bellini–Tosi_direction_finder sameAs m.0118wnt5.
- Bellini–Tosi_direction_finder sameAs Q9065684.
- Bellini–Tosi_direction_finder wasDerivedFrom Bellini–Tosi_direction_finder?oldid=679051156.
- Bellini–Tosi_direction_finder depiction Radiogoniometer_RN_S25_internal_workings.jpg.
- Bellini–Tosi_direction_finder isPrimaryTopicOf Bellini–Tosi_direction_finder.