Mexican Taxi Dispatch CB Channel 24 27.235 MHz AM

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• published: 17 Mar 2016
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Spanish language taxicab traffic in the CB radio band (the LEGAL CB radio band!) 26.965-27.405 MHz. Most of the time, taxicabs are heard outside the legal 40 channel allocation, usually from 25-26 MHz and from 27-28 MHz and then into 10 meters from 26-30 MHz and up into VHF low band...usually in FM mode but some AM activity has been heard from Brazil on 33 MHz band. The 25-30 MHz (25000 kHz to 30000 kHz) portion of HF (3-30MHz - 3000 kHz to 30000 kHz) supports both local communications and long-distance skip skywave propagation conditions. The 25-28 MHz section is allocated to a variety of services. The 28-29.7 MHz section is allocated to amateur (ham) radio worldwide as the 10 meter band but it suffers from heavy misuse abuse and interference from CB-like communications and a general lack of interest by ham operators. "Export radios" - often sold as "10-meter transceivers" - This can include anything from the "uppers and lowers" 26.515 to 27.855 MHz, the "standard" 6-band coverage of 25.615 to 28.305 MHz (or 26.065 to 28.755 MHz), the "12-band" coverage from 24.265 to 29.655 MHz or the "RU" mode or "Russian" export mode which is either 25.615 to 28.305 or 25.615 to 30.105 MHz. Some of these transceivers cover up to 31 or 32 MHz depending on modifications and the part of the world the radio is marketed in. INTERNATIONAL FREQUENCY ALLOCATION TABLE PER ITU REGULATIONS (SPECIFIC TO ITU REGION 2, NORTH AMERICA, CENTRAL AMERICA AND SOUTH AMERICA - THE AMERICAS) - WITH NOTATIONS FOR U.S. FCC FREQUENCY ALLOCATIONS The band 24.89 - 24.99 MHz is allocated to AMATEUR and AMATEUR SATELLITE - 12 METER AMATEUR BAND The band 24.99 - 25.005 MHz is allocated to STANDARD FREQUENCY AND TIME SIGNAL (25000 kHz - 25 MHz) The band 24.99 - 25.01 MHz is allocated to STANDARD FREQUENCY AND TIME SIGNAL (25000 kHz - 25 MHz) The band 25.01 - 25.55 MHz is allocated to MOBILE, MARITIME MOBILE and LAND MOBILE The band 25.55 - 25.67 MHz is allocated to RADIO ASTRONOMY The band 25.67 - 26.1 MHz is allocated to BROADCASTING - 11 METER INTERNATIONAL SHORTWAVE BROADCASTING BAND The band 26.955 - 26.955 MHz is allocated to the INTERNATIONAL FIXED SERVICE The band 26.175 - 27.5 MHz is allocated to FIXED and MOBILE - EXCEPT AERONAUTICAL MOBILE The band 26.96 - 27.23 MHz is allocated to FIXED and MOBILE The band 26.957 - 27.283 MHz is allocated to ISM INDUSTRIAL SCIENTIFIC AND MEDICAL The band 26.96 - 27.41 MHz is allocated to PERSONAL RADIO SERVICES (CITIZEN'S BAND) The band 27.43 - 27.53 MHz is allocated to FIXED and MOBILE (BUSINESS RADIO SERVICE) The band 27.54 - 28 MHz is allocated to FIXED and MOBILE (US GOVERNMENT) The band 27.5 - 28 MHz is allocated to METEOROLOGICAL AIDS, FIXED and MOBILE The band 28 - 29.7 MHz is allocated to AMATEUR and AMATEUR SATELLITE - 10 METER AMATEUR BAND The band 29.7 - 30 MHz is allocated to FIXED and MOBILE (including LAND MOBILE) LEGAL BUSINESS RADIO SERVICE ALLOCATIONS 26 - 30 MHZ BAND: 27.410 MHz, 27.430 MHz, 27.450 MHz, 27.470 MHz, 27.490 MHz, 27.510 MHz, 27.530 MHz, 29.710 MHz, 29.730 MHz, 29.750 MHz, 29.770 MHz, 29.790 MHz. Even though there are other frequencies allowed per the footnote US298 below (27.555 MHz, 27.615 MHz, 27.635 MHz, 27.655 MHz, 27.765 MHz, and 27.860 MHz), there are no FCC licensed business users of any of the frequencies between 27.54 MHz and 28 MHz. There are, however, licensed and active users of the business radio pool (FCC rules Part 90, land mobile) frequencies in the 27.41 to 27.54 MHz and 29.7 to 30 MHz bands. These include school bus dispatch services on 27.4300 MHz, 27.4500 MHz, and 29.7100 MHz, car/limo services in New York City on 29.7300 MHz and 29.7700 MHz (Bushwick Car Service, for example, is licensed for 29.770 MHz and is often logged during Sporadic-E and F2 openings. FCC callsign WQAP986). Other land transportation services use the 29.7300 and 29.7900 MHz frequencies as well. ALLOCATION FOOTNOTE US25 The use of frequencies in the band 25.85-26.175 MHz may be authorized in any area to non-Federal remote pickup broadcast base and mobile stations on the condition that harmful interference is not caused to stations of the broadcasting service in the band 25.85-26.1 MHz and to stations of the maritime mobile service in the band 26.1-26.175 MHz. Frequencies within the band 26.1-26.175 MHz may also be assigned for use by low power auxiliary stations. ALLOCATION FOOTNOTE US298 The assigned frequencies 27.555, 27.615, 27.635, 27.655, 27.765, and 27.860 MHz are available for use by forest product licensees on a secondary basis to Federal operations including experimental stations. Non-Federal operations on these frequencies will not exceed 150 watts output power and are limited to the states of Washington, Oregon, Maine, North Carolina, South Carolina, Tennessee, Georgia, Florida, Alabama, Mississippi, Louisiana, and Texas (eastern portion).