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Radio amateurs may engage in satellite and space craft communications; however, the frequencies allowed for such activities are allocated separately from more general use radio amateur bands. Under the International Telecommunication Union's rules, all amateur radio operations may only occur within 50 kilometres (31 mi) of the Earth's surface.
A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [1]
An amateur radio repeater system consisting of a 70 cm repeater and a 2-meter digipeater and iGate. Coaxial cavity RF filter at 2 meter repeater An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer ...
A repeater can either be an amplifier or a re-generator. Amplifiers increase the signal level of the analog transmission signal; re-generators demodulate the signal to binary, then re-modulate it into the original transmission frequency.
No. 2 UConn entered the Maui Invitational as the favorite in a stacked field to win the Feast Week showcase. Instead, it has a date for the seventh-place game.
Alex Ovechkin's pursuit of Wayne Gretzky's NHL career goals record should be back on very soon. Signs point to Ovechkin returning to the Washington Capitals' lineup on Saturday night at the ...
A woman is considering calling off her wedding just months before she's due to walk down the aisle "There's a pit in my stomach I've been trying to ignore.
Cellular repeater: This is a radio repeater for boosting cell phone reception in a limited area. The device functions like a small cellular base station , with a directional antenna to receive the signal from the nearest cell tower , an amplifier, and a local antenna to rebroadcast the signal to nearby cell phones.