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A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users (a talkgroup) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time ...
UHF television broadcasting is the use of ultra high frequency (UHF) radio for over-the-air transmission of television signals. UHF frequencies are used for both analog and digital television broadcasts. UHF channels are typically given higher channel numbers, like the US arrangement with VHF channels (initially) 1 to 13, and UHF channels ...
The NATO Military radios use 150.0 Hz, and this can be found in the user manuals for the radios. Some areas do not use certain tones. For example, the tone of 100.0 Hz is avoided in the United Kingdom since this is twice the UK mains power line frequency; an inadequately smoothed power supply may cause unwanted squelch opening (this is true in ...
Frequency allocation. Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [ 1] Because radio propagation does not stop at national boundaries, governments have sought to ...
Iraq has postponed announcing an end-date for the US-led military coalition’s presence in the country due to “recent developments,” raising questions about the future of US military presence ...
Here’s what you can do until then: • Vaginal dryness: Estrogen thickens the lining of the walls of the vagina, so when levels of the hormone drop, that vaginal tissue thins and becomes dry ...
The Family Radio Service ( FRS) is an improved walkie-talkie radio system authorized in the United States since 1996. This personal radio service uses channelized frequencies around 462 and 467 MHz in the ultra high frequency (UHF) band. It does not suffer the interference effects found on citizens' band (CB) at 27 MHz, or the 49 MHz band also ...
A $4 billion (£3.1 billion) settlement has been announced for claims from more than two thousand people seeking compensation over last year's deadly wildfires on Maui, Hawaii's governor has said.