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2. Waveband Communications - Wikipedia

   en.wikipedia.org/wiki/Waveband_Communications

   The company renewed its contract with GSA [2] in 2019 to provide more than 1,000 GSA-approved products. Waveband Communications also has contracts with the Department of Information Technology in the state of Maryland [3] and with Commonwealth of PA specifically IFB 6100039075 for Two-way radio Equipment and Services. [4]

3. Two-way radio - Wikipedia

   en.wikipedia.org/wiki/Two-way_radio

   Naval air traffic controller communicates with aircraft over a two-way radio headset A variety of portable handheld two-way radios for private use. A two-way radio is a radio transceiver (a radio that can both transmit and receive radio waves), which is used for bidirectional person-to-person voice communication with other users with similar radios, [1] in contrast to a broadcast receiver ...

4. MDC-1200 - Wikipedia

   en.wikipedia.org/wiki/MDC-1200

   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. Mark and space tones are 1,200 Hz and 1,800 Hz ...

5. List of Motorola products - Wikipedia

   en.wikipedia.org/wiki/List_of_Motorola_products

   Canopy – A line-of-sight wireless technology, primarily used by ISPs to provide broadband internet; MotoMESH – A mobile wireless broadband product providing proprietary "Mesh-Enabled Architecture" and standards-based 802.11 network access in both the unlicensed 2.4 GHz band and the licensed 4.9 GHz public-safety band

6. Push-to-talk - Wikipedia

   en.wikipedia.org/wiki/Push-to-talk

   Push-to-talk (PTT), also known as press-to-transmit, is a method of having conversations or talking on half-duplex communication lines, including two-way radio, using a momentary button to switch from voice reception mode to transmit mode. CB radio with push-to-talk microphone switch

7. Mobile radio - Wikipedia

   en.wikipedia.org/wiki/Mobile_radio

   Examples of US microprocessor-controlled mobile radios: Motorola Astro Digital Spectra W9; Kenwood TK-690; PositionPTT mobile-radio-m94g; As use of mobile radio equipment has virtually exploded, channel spacing has had to be narrowed again to 12.5–15 kHz with modulation deviation dropped to ±2.5 kilohertz.