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For example, for visible light, the refractive index of glass is typically around 1.5, meaning that light in glass travels at c / 1.5 ≈ 200 000 km/s (124 000 mi/s); the refractive index of air for visible light is about 1.0003, so the speed of light in air is about 90 km/s (56 mi/s) slower than c.
Public safety and commercial users generally refer to their handhelds simply as "radios". Surplus Motorola Handie-Talkies found their way into the hands of ham radio operators immediately following World War II. Motorola's public safety radios of the 1950s and 1960s were loaned or donated to ham groups as part of the Civil Defense program. To ...
The 6809 is used in the TRS-80 Color Computer, Dragon 32/64, SuperPET, ENER 1000, Fujitsu FM-7, the Cybernex LC3, and Thomson MO/TO home computers, the Vectrex game console, and early 1980s arcade video games including Star Wars, Defender, Robotron: 2084, Joust, and Gyruss. 1990s Williams pinball machines are equipped with WPC-series controller boards based on 68B09. [2]
Canopy – A line-of-sight wireless technology, primarily used by ISPs to provide broadband internet; MotoMESH – A mobile wireless broadband product providing proprietary "Mesh-Enabled Architecture" and standards-based 802.11 network access in both the unlicensed 2.4 GHz band and the licensed 4.9 GHz public-safety band
The V325 is a basic clamshell cell phone for Verizon Wireless and US Cellular with a large display and an outer shell that lights up during incoming calls. The V325 is an upgrade of the V265/V276, and includes a universal USB charger rather than a proprietary Motorola charger.
Airwave was established in 2000 by BT as BT Airwave. [4] BT Airwave along with BT Quadrant secured a Public Private Partnership (PPP) contract worth £2.5bn to supply of Professional Mobile Radio (PMR) communications to the police and other ‘blue light’ services. [5]
The term All American Five (abbreviated AA5) is a colloquial name for mass-produced, superheterodyne radio receivers that used five vacuum tubes in their design. These radio sets were designed to receive amplitude modulation (AM) broadcasts in the medium wave band, and were manufactured in the United States from the mid-1930s until the early 1960s.
The AN/PRC-6809 MBITR Clear is a variant of the MBITR, made available without encryption. While the PRC-148 includes US Type 1 capabilities in all versions, the PRC-6809 uses Level III Data Encryption Standard, making it available to police, firefighters, and militaries unable to obtain International Traffic in Arms Regulations (ITAR) approval.