From Wikipedia, the free encyclopedia
|
|
This article requires authentication or verification by an expert.
Please assist in recruiting an expert or improve this article yourself. See the talk page for details. This article has been tagged since December 2007. |
Motorola HT1000 hand-held two-way radio
The business band is the name used by US scanner hobbyists who listen to Federal Communications Commission licensees using Industrial/Business pool frequencies. The regulations listing frequencies in this pool are contained in Subpart C of Part 90, Title 47 CFR.
[edit] Artifacts
The pool describes a series of frequencies on the VHF and UHF two-way radio bands. They are reserved for use by businesses, and, although the requirement is sometimes overlooked, in the USA they require a license from the FCC prior to use. The exception to this is five specific frequencies that are now part of the Multi-Use Radio Service, which permits unlicensed operation on these frequencies, provided the output power does not exceed 2 watts.
The electromagnetic spectrum between approximately 450 and 470 MHz is used largely for UHF business communications, although this spectrum is not exclusively for business use. In some large metropolitan areas, such as New York, the UHF-T band (between 470 and 512 MHz) is also used, due to congestion on the standard VHF or UHF bands. There are also a number of specific frequencies, in both the VHF and UHF spectrum, that are for business use; most of these have color-coded names, such as Blue Dot or Red Star.
[edit] History
In the 1980s,[dubious – discuss] the FCC acknowledged the need for private frequencies for business to transmit on, and, with congressional authorization, reserved a selection of frequencies in the 450-470MHz range for this purpose.[citation needed] Business Radio Service (BRS) is a collection of 56[dubious – discuss] UHF frequencies selected by the FCC, that are reserved exclusively for business use. Many enterprises choose to use these frequencies because they are exclusive, and therefore have less cross-chatter with unaffiliated parties. To obtain a license for conducting transmissions at these frequencies, licensees must be registered as a business with the Internal Revenue Service.[citation needed]
[edit] Frequency charts
Although the term "business band" refers to several discrete frequencies that are not grouped into a single band, the frequencies are grouped by band and listed below.
[edit] Low-band frequencies
| Name |
Frequency |
Notes |
|
27.490 MHz |
Low power, itinerant |
|
27.510 MHz |
Low power |
|
27.553[dubious – discuss] MHz |
Low power |
|
30.840 MHz |
Low power |
|
33.120 MHz |
Low power |
|
33.140 MHz |
Low power |
|
33.400 MHz |
Low power |
|
35.020 MHz |
Low power |
|
35.040 MHz |
Low power, itinerant |
|
42.980 MHz |
Low power |
|
43.040 MHz |
Low power, itinerant |
[edit] VHF frequencies
| Name |
Frequency |
Notes |
| Red Dot |
151.625 MHz |
Itinerant |
|
151.820 MHz |
Un-licensed Multi-Use Radio Service (MURS); 2 watts, 11.25 KHz bandwidth |
|
151.880 MHz |
Un-licensed Multi-Use Radio Service (MURS); 2 watts, 11.25 KHz bandwidth |
|
151.940 MHz |
Un-licensed Multi-Use Radio Service (MURS); 2 watts, 11.25 KHz bandwidth |
| Purple Dot |
151.955 MHz |
|
|
154.515 MHz |
|
|
154.540 MHz |
|
| Blue Dot |
154.570 MHz |
Un-licensed Multi-Use Radio Service (MURS); 2 watts, 12.5 KHz bandwidth |
| Green Dot |
154.600 MHz |
Un-licensed Multi-Use Radio Service (MURS); 2 watts, 12.5 KHz bandwidth |
[edit] UHF and GMRS frequencies
| Name |
Frequency |
Notes |
| White Dot |
462.575 MHz |
GMRS |
| Black Dot |
462.625 MHz |
GMRS |
| Orange Dot |
462.675 MHz |
GMRS |
| Brown Dot |
464.500 MHz |
Itinerant |
| Yellow Dot |
464.550 MHz |
Itinerant |
| Silver Star |
467.850 MHz |
|
| Gold Star |
467.875 MHz |
|
| Red Star |
467.900 MHz |
|
| Blue Star |
467.925 MHz |
|
|
469.500 MHz |
Itinerant |
|
469.550 MHz |
Itinerant |
[edit] External links
[edit] References
- Fawcett, Bill. Everything You Always Wanted to Know About Blue Dot Radios... But Were Afraid to Ask, Spaniel Journal
