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Motorola T5320 FRS handheld radio. 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.
Motorola, for example, marketed a vehicular repeater system called PAC*RT. It was available for use with 150 MHz or 450 MHz hand-helds and interfaced with some Motorola mobile radios. In the 1980s, General Electric Mobile Radio had a 463 MHz emergency medical services radio that featured a 453 MHz vehicular repeater link to a hand-held.
This is a list of Motorola products. Motorola Mobility is an American subsidiary company of Chinese multinational technology company Lenovo that manufactures consumer electronics and telecommunications products.
In some repeater systems, the time lag can be significant. The lower tone may cause one or two syllables to be clipped before the receiver audio is unmuted (is heard). This is because receivers are decoding in a chain. The repeater receiver must first sense the carrier signal on the input, then decode the CTCSS tone.
GMRS radios are typically handheld portable (walkie-talkies) much like Family Radio Service (FRS) radios, and they share a frequency band with FRS near 462 and 467 MHz. Mobile and base station -style radios are available as well, but these are normally commercial UHF radios as often used in the public service and commercial land mobile bands.
MDC (Motorola Data Communications), also known as Stat-Alert, MDC-1200 and MDC-600, is a Motorola two-way radio low-speed data system using audio frequency shift keying, (AFSK). MDC-600 uses a 600 baud data rate. MDC-1200 uses a 1,200 baud data rate. Systems employ either one of the two baud rates.
In March, 2017, Motorola Solutions acquired Interexport SA. [14] In August 2017, Motorola Solutions announced it completed the acquisition of Kodiak Networks, a privately held provider of broadband push-to-talk (PTT) for commercial customers. [15] Its clients included AT&T, Vodafone, KPN, Verizon, Telefonica, Bell Canada, and Vivo.
In essence, a trunked radio system is a packet switching computer network. Users' radios send data packets to a computer, operating on a dedicated frequency — called a control channel — to request communication on a specific talkgroup.
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