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South Africa has a 23 channel AM / SSB 29 MHz CB allocation (called "29 Megs" or "29 MHz CB") from 29.710 to 29.985 MHz in 12.5 kHz steps. South Africa also permits use of standard CB channels 19–27 (27.185–27.275 MHz) with AM / SSB permitted. Many radios sold in South Africa feature both the 27 MHz and 29 MHz bands.
Brazil allows higher power levels than the US and most of Europe. New Zealand has two 40-channel HF CB bands available, the NZ-specific "NZ CB Band" 26.330–26.770 MHz (40 channels, AM and SSB allowed) and the standardized "mid band" 26.965–27.405 MHz (40 channels, AM and SSB allowed) for a total of 80 HF CB channels.
Five 2.8 kHz-wide channels are available in the U.S., centered on 5.332, 5.348, 5.368, 5.373, and 5.405 MHz. Since most radios in SSB mode display the (suppressed) carrier frequency, in USB mode the dial frequencies would all need to be set 1.5 kHz lower. Voice operation is generally in upper sideband mode, which is mandatory in the U.S. . The ...
CB radios must include AM or SSB modulation and may include frequency modulation. [5] If a radio includes SSB, it must transmit on the upper sideband with a suppressed, reduced, or full carrier. The unit may also transmit on the lower sideband with carrier as noted. [6]
Also, it is only by using these exact frequencies that there will be enough room for four simultaneous SSB conversations without mutual interference, assuming the 2.8 kHz de facto standard bandwidth of typical SSB transceivers. WRC-15 frequencies, like all others, can only be used when they have been licensed for amateur use by a country's ...
Frequency Power Area of Coverage ABS-CBN Manila DWBM-TV 43 (Digital Commercial Broadcast) 647.143 MHz 5 kW Metro Manila: DWWX-TV ^ 16 (Digital Test Broadcast) 485.143 MHz ABS-CBN Baguio ^ D-3-ZO-TV 30 (Digital Test Broadcast) 569.143 MHz 10 kW Baguio: ABS-CBN Tarlac ^ DWTC-TV 34 (Digital Test Broadcast) 593.143 MHz 5 kW Tarlac City: ABS-CBN ...
525–1705 kHz in N. America, Australia and the Philippines. amplitude modulation (AM) medium frequency (MF) Usually speech and news, where a lower bandwidth will suffice; long range at night due to the ionosphere increasing in altitude Shortwave: Multiple; see Shortwave bands: Mostly AM and single-sideband (SSB) modes high frequency (HF)
Radio in the Philippines started in June 1922 with the establishment of KZKZ (AM) in Manila, Philippines by Henry Herman Sr., owner of the Electrical Supply Company in Manila. Henry Herman was an American and a former soldier who came to the Philippines to fight in the Philippine–American War. [2] He stayed in the Philippines after he was ...