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A variation to the single tone scheme was seen in one-way paging receivers. In some two-tone sequential systems, sending 4–8 seconds of the second tone pages all receivers which have a code including the second tone. This is sometimes referred to as long tone B. Receivers made by Plectron and often used to page volunteer firefighters use a ...
Pageboy II. Motorola’s Pageboy II was launched in 1975 for the United States and 1976 for Europe in various types. Pb II 5-tone only 68–88 MHz / 146–174 MHz (US and Eur). Pb II tone only for 5-tone 80,6–88 MHz / 146–174 MHz (US). Pb II tone & voice radio for 2-tone signalling systems 68–88 MHz / 146–174 MHz (US).
The Motorola Pageboy used to be very popular with fire brigades as an alarm receiver and, thanks largely to the success of this initial venture, pagers quickly began to replace public announcement systems in hospital and factories. The pager was activated by a 2-tone code, after which a voice message was transmitted.
Android 2.0 "Eclair" Motorola Backflip: 2010/03 D Android 1.5 "Cupcake" Motorola Flipout: 2010/06 D Android 2.0 "Eclair" Motorola Droid X: 2010/07 D Android 2.0 "Eclair" Motorola Milestone XT720: 2010/07 D Android 2.1 "Eclair" Motorola Charm: 2010/08 D Android 2.0 "Eclair" Motorola Droid 2: 2010/08 D Android 2.2 "Froyo" Motorola Defy
Motorola Minitor. Front view of the Minitor V pager. The Motorola Minitor is a portable, analog, receive only, voice pager typically carried by fire, rescue, and EMS personnel (both volunteer and career) to alert of emergencies. The Minitor, slightly smaller than a pack of cigarettes, is carried on a person and usually left in selective call mode.
An NEC pager, using POCSAG coding branded for the Skyper network. Radio-paging code No. 1 (usually and hereafter called POCSAG) is an asynchronous protocol used to transmit data to pagers. Its usual designation is an acronym of the P ost O ffice C ode S tandardisation A dvisory G roup, the name of the group that developed the code under the ...
A paging system alerts a pager (or group of pagers) by transmitting information over an RF channel, including an address and message information. This information is formatted using a paging protocol, such as 2-tone, 5/6-tone, GOLAY, POCSAG, FLEX, ERMES, or NTT. Two-way pagers and response pagers typically use the ReFLEX protocol.
A Motorola Envoy. The Motorola Envoy Personal Wireless Communicator was a personal digital assistant initially slated for release by Motorola in summer 1994 but delayed and then available for public sale in February 1995. [1] [2] It was built to run General Magic's Magic CAP operating system, and it combined wireless, telephone, and infrared ...