Path: news.nzbot.com!local
From: Miloch <Miloch_member@newsguy.com>
Newsgroups: alt.binaries.pictures.aviation
Subject: Before radar, detecting incoming aircraft was crude as well as creative! - A two-horn system at Bolling Field, USA, 1921.jpg 11-files 3MB "Before.nzb"
Date: 15 Aug 2018 08:35:53 +0000 (UTC)
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Keywords: vertical,binaries,location,ears,known,could,1940,like,distances,parabola,trial,tubes,tubas,shaped,large,detect,1939,looks,soldiers,targets,operation,operating,weather,from,operator,size,into,horn,conditions,equipment,skill,member,formation,south,horizontal,depending,locators,target,1920,newsguy,1921,scoop,personal,czech,three,bolling,field,pair,france,japanese,horns,england,system,germany,swedish,perrin,dutch,locator,sound,1930,miloch,acoustic,well,creative,crude,incoming,aircraft,detecting,radar,before
Xref: news.nzbot.com alt.binaries.pictures.aviation:8365
size: 3MB, Parts: [11/11]
11 image files
Before radar, detecting incoming aircraft was crude as well as creative! [1/6] - A two-horn system at Bolling Field, USA, 1921.jpg
Before radar, detecting incoming aircraft was crude as well as creative! [2/6] - acoustic locator could detect targets at distances from 5 to 12 km, depending on weather conditions, operator skill, and the size of the target formation.jpg
Before radar, detecting incoming aircraft was crude as well as creative! [3/6] - Czech locator, 1920s. Scoop-shaped reflectors direct the sound into large-diameter tubes..jpg
Before radar, detecting incoming aircraft was crude as well as creative! [4/6] - Dutch personal horns 1930s.jpg
Before radar, detecting incoming aircraft was crude as well as creative! [5/6] - Dutch personal parabola, 1930s.jpg
Before radar, detecting incoming aircraft was crude as well as creative! [6/6] - early radar system in operation at an aerodrome in the south of England. 1930s...(looks like sound not 'radar').jpg
Before radar, detecting incoming aircraft was crude as well as creative! - ears1_0.jpg ...
Before radar, detecting incoming aircraft was crude as well as creative! [1/4] - Perrin acoustic locator on trial in France. 1930s.jpg
Before radar, detecting incoming aircraft was crude as well as creative! [2/4] - Sound location equipment in Germany, 1939. It consists of four acoustic horns, a horizontal pair and a vertical pair.jpg
Before radar, detecting incoming aircraft was crude as well as creative! [3/4] - Swedish soldiers operating an acoustic locator in 1940.jpg
Before radar, detecting incoming aircraft was crude as well as creative! [4/4] - Three Japanese acoustic locators, colloquially known as 'war tubas'.jpg
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