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The initial channel allocations had a gap equal to two channel spaces between channels 22 and 23. Those channels were assigned to the Business Radio Service. Beginning in 1977, those two channels (and 15 others above CB Channel 23) were reallocated to CB use. Channel 23 was left as it was so that users of pre-1977 equipment could use that ...
The 27 MHz CB27/81 Bandplan is a list of the channel frequencies for FM CB radio in the United Kingdom.. Unlike CB usage in the United States, and subsequently elsewhere in the world, the original UK 40 channels progress in order with 10 kHz spacing.
Rig control companion program Flarq: Automatic Repeat reQuest companion program for Fldigi GNU Radio: GPL: Windows, macOS, Linux: software-defined radio and signal processing SDRangel: GPL: Windows, macOS, Linux: software-defined radio SDR# Freeware Windows software-defined radio receiver SDR++: GPL: Windows, macOS, Linux, Android: software ...
An estimated 12% of listenership to FCC-licensed AM and FM radio stations comes from means other than the actual AM or FM signal itself, usually an Internet radio stream. [12] Sirius XM Radio has a base of 34.3 million subscribers as of 2020. [13] American Top 40 attracts over 20 million listeners per week. [6]
At that time, most people were familiar with citizens band radio, often abbreviated as CB radio, but multi-user chat and instant messaging were largely unknown. CompuServe CB used the CB radio paradigm to help users understand the new concept. Like CB radio, it had 40 "channels" and commands like "tune", "squelch", and "monitor".
The prominence of CB radio grew in Britain partly due to the success of novelty songs like C.W. McCall's "Convoy" and Laurie Lingo & The Dipsticks' "Convoy GB" in 1976 (both of which were Top 5 hits). By 1980, CB radio was becoming a popular pastime in Britain; as late as the summer of 1981 the British government was still saying that CB would ...
Crystal controlled two channels Yes Yes Yes Cyan [33] Pre-built 100 kHz – 18 GHz 1 – 3 GHz (8 fully independent Rx chains and 8 fully independent Tx chains, each capable of up to 1 GHz of RF bandwidth) 16 16 Yes 1–3 GSPS ADCs; 2.5 GSPS DACs; 1 – 16 receive and 1 – 16 transmit (total of 16 radio chains) 4x 40Gbit/s QSFP, Ethernet Yes Yes
In August 2005, India deregulated the 26.957–27.283 MHz band for license-free CB radio usage with a maximum power output of 5 watts. The channel plan follows channels 1–27 from the standard 40 channel CB plan originally adopted by the United States (and most other countries worldwide). Channel 1 is 26.965 and channel 27 is 27.275 MHz.