enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Through-the-earth mine communications - Wikipedia

   en.wikipedia.org/wiki/Through-the-earth_mine...

   Portable magnetic-loop cave radios have been used by cavers for two-way communication and cave surveying since the 1960s. [1] In a typical setup the transmitting loop, consisting of many turns of copper wire, is oriented horizontally within the cave using a spirit level, and driven at a few kHz. Though such a small antenna is a very poor ...

3. List of radios - Wikipedia

   en.wikipedia.org/wiki/List_of_radios

   The RCA model R7 Superette superheterodyne table radio. This is a list of notable radios, which encompasses specific models and brands of radio transmitters, receivers and transceivers, both actively manufactured and defunct, including receivers, two-way radios, citizens band radios, shortwave radios, ham radios, scanners, weather radios and airband and marine VHF radios.

4. EF Johnson Technologies - Wikipedia

   en.wikipedia.org/wiki/EF_Johnson_Technologies

   EF Johnson Technologies, Inc. is a two-way radio manufacturer founded by its namesake, Edgar Frederick Johnson, in Waseca, Minnesota, United States in 1923. [1] Today it is a wholly owned subsidiary of JVCKenwood of Yokohama, Japan. EF Johnson Technologies offers a wide range of equipment for use by law enforcement, firefighters, EMS, and military.

5. eXtreme Radio Service - Wikipedia

   en.wikipedia.org/wiki/EXtreme_Radio_Service

   The TriSquare TSX300. eXtreme Radio Service (eXRS) is a proprietary personal communication technology marketed by TriSquare in the United States. The radios, which are similar to other walkie-talkies, use the Part 15 low power communication 915 MHz band, and employ frequency-hopping spread spectrum FM technology to attempt to address some of the perceived shortcomings of Family Radio Service ...

6. Project 25 - Wikipedia

   en.wikipedia.org/wiki/Project_25

   Several hand-held Project 25 radios used around the world. Project 25 (P25 or APCO-25) is a suite of standards for interoperable digital two-way radio products. P25 was developed by public safety professionals in North America and has gained acceptance for public safety, security, public service, and commercial applications worldwide. [1]

7. RCA Communication Systems - Wikipedia

   en.wikipedia.org/wiki/RCA_Communication_Systems

   In 2009, an agreement was made between Discount Two Way Radio Corporation (DTWR) and Technicolor SA to manufacture Two-way radio products under the RCA brand. [1] [2]RCA Two-way radios is the official sponsor of the United States Bobsled and Skeleton Team for the 2022 Winter Olympic Games in Beijing.