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OSCAR 2 was launched June 2, 1962, by a Thor-DM21 Agena B launcher from Vandenberg Air Force Base, Lompoc, California. The satellite, a rectangular box (30 cm × 25 cm × 12 cm (11.8 in × 9.8 in × 4.7 in)) weighing 10 kg (22 lb), was launched as a secondary payload (ballast) for Corona 43 , the fifth launch of a KH-4 satellite.
The Original ASTRO 25 format utilizes APCO Project 25 Phase I technology (FDMA). It is the most used format of the ASTRO 25 family of radio systems. The ASTRO 25 Phase II system, which complies with the P25 Phase II standard, uses TDMA technology to deliver two voice channels over a single wireless trunking channel. [4]
Man overboard can also be signaled with three prolonged blasts on the ship's whistle and general alarm bell (Morse code "Oscar"). [4] Mr Skylight paged over the PA system is an alert for the crew on board and means there is a minor emergency somewhere. [6] [7] Oscar, Oscar, Oscar is the code for man overboard aboard Royal Caribbean and ...
First amateur radio satellite OSCAR 1, launched in 1961 Simple OSCAR beacon signal, 1962. The first amateur satellite, simply named OSCAR 1, was launched on December 12, 1961, barely four years after the launch of the world's first satellite, Sputnik I. The satellite had to be built in a very specific shape and weight, so it could be used in ...
Based on the success of UoSAT-OSCAR-11's Digital Communications Experiment, AMSAT-OSCAR-16 was designed to be a dedicated store-and-forward file server in space. Using 1200 bit per second Mode JD radio links, AMSAT-OSCAR-16 interacts with ground station terminal software to appear as a packet radio bulletin board system to the user.
AMSAT is a name for various amateur radio satellite organizations worldwide. In particular, it often refers to the Radio Amateur Satellite Corporation, headquartered in Washington, D.C. AMSAT organizations design, build, arrange launches for, and then operate (command) satellites carrying amateur radio payloads, including the OSCAR series of satellites.
Overview diagram of COSPAS-SARSAT communication system used to detect and locate ELTs, EPIRBs, and PLBs First generation EPIRB emergency locator beacons. An emergency position-indicating radiobeacon (EPIRB) is a type of emergency locator beacon for commercial and recreational boats, a portable, battery-powered radio transmitter used in emergencies to locate boaters in distress and in need of ...
The Emergency Alert System (EAS) is a national warning system in the United States designed to allow authorized officials to broadcast emergency alerts and warning messages to the public via cable, satellite and broadcast television and AM, FM and satellite radio. Informally, Emergency Alert System is sometimes conflated with its mobile phone ...