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Ten-code. Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code.[ 1]
Identification, friend or foe ( IFF) is a combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that identifies the broadcaster. IFF systems usually use radar frequencies, but other electromagnetic frequencies, radio or infrared, may be used. [ 1]
South Africa. Between 1899 and 1903, the Natal Government Railways (NGR) placed 101 4-10-2 tank locomotives in service. The locomotive was designed by G.W. Reid, the Locomotive Superintendent of the NGR at the end of the nineteenth century, and built in Scotland by Dübs and Company and the newly established North British Locomotive Company.
VHF Data Link. The VHF Data Link or VHF Digital Link ( VDL) is a means of sending information between aircraft and ground stations (and in the case of VDL Mode 4, other aircraft). Aeronautical VHF data links use the band 117.975–137 MHz assigned by the International Telecommunication Union to Aeronautical mobile (R) service.
All U.S. states are issuing Real ID cards through their driver's licensing agencies, with requirements varying by state. Many offices require a reservation, which you can make online. Visit the ...
4-10-2 locomotives. Help. Front of locomotive at left. Wikimedia Commons has media related to 4-10-2 locomotives. Locomotives classified 4-10-2 under the Whyte notation of locomotive axle arrangements. The equivalent UIC classification of locomotive axle arrangements is 2E1 or 2'E1'.
As the first images out of Ferguson, Missouri surfaced 10 years ago — the bloodied body of a man left for hours in the street beneath white sheets, protesters smashing car windows and looting ...
2-10-4. Under the Whyte notation for the classification of steam locomotives, a 2-10-4 locomotive has two leading wheels on one axle, usually in a Bissel truck, ten coupled driving wheels on five axles, and four trailing wheels on two axles, usually in a bogie. These were referred to as the Texas type in most of the United States, the Colorado ...