operator's service manual
41Cryptanalysis of the Enigma — enabled the western Allies in World War II to read substantial amounts of secret Morse coded radio communications of the Axis powers that had been enciphered using Enigma machines. This yielded military intelligence which, along with that from… …
42Comparison of the AK-47 and M16 — M16 (top) and AK 47 (bottom) assault rifles Firearm AK 47 M16A1 Manufacturer Izhmash ArmaLite, Colt …
43Panel switch — The panel switching system was an early type of automatic telephone exchange, first put into urban service by the Bell System in the 1920s and removed during the 1970s. The Panel and Rotary systems were developed in parallel by Bell Labs before… …
44Emergency telephone number — Many countries public telephone networks have a single emergency telephone number, sometimes known as the universal emergency telephone number or occasionally the emergency services number, that allows a caller to contact local emergency services …
45Ship gun fire-control system — Mk 37 Director c1944 with Mk 12 (rectangular antenna) and Mk 22 orange peel Ship gun fire control systems (GFCS) enable remote and automatic targeting of guns against ships, aircraft, and shore targets, with or without the aid of radar or optical …
46Private branch exchange — A private branch exchange (PBX) is a telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public. PBXs are also referred to as …
47Trams in Melbourne — Melbourne tramway network D1.3508 in Bank of Melbourne wrap livery outside Melbourne Town Hall, Swanston Street, 2011 …
48Automatic link establishment — Automatic Link Establishment, commonly known as ALE, is the worldwide de facto standard for digitally initiating and sustaining HF (High Frequency) radio communications.cite web|title=Frequency Agile Systems in the MF/HF Bands |author=Telecom… …
49Naval weaponry of the People's Liberation Army Navy — The People s Liberation Army Navy (PLAN) is the naval branch of the People s Liberation Army (PLA), the armed forces of the People s Republic of China. The PLAN force consists of approx. 250,000 men and over a hundred major combat vessels,… …
50Telephone numbers in New Zealand — New Zealand telephone numbers Location Country New Zealand Continent Oceania Access codes Country calling +64 International prefix 00 …
