Difference between revisions of "LMRS"
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Revision as of 19:42, 3 December 2015
Land Mobile Radio Service (LMRS) - FCC Title 47 Part 90; Private land mobile radio systems are used by companies, local governments, and other organizations for communication. Many businesses and industries throughout the world use it as their primary means of communication, especially from a fixed location to mobile units. These licensed systems often share frequencies with other private users in the United States.
Private Land Mobile Radio Service licensees in the 150-174 MHz and 421-512 MHz bands have been mandated by the FCC to move to narrowband only use before January 1, 2013. The narrow band requirement is at 12.5 kHz maximum.
LMRS can be described as the following two components:
- The Land mobile radio system
- The Land mobile service
LMRS is often referred to as the "business band." It was established in 1927 to permit commercial and public safety uses of two-way radio by commercial entities and non-Federal government agencies. The available frequencies in the US have traditionally been separated into two pools. One is for industrial and business users which we call LMRS, including some special categories such as petroleum, manufacturing and forestry and the other is for public safety including medical, police, fire and others.
Contents
Frequency charts
Although the term "business band" refers to several discrete frequencies that are not grouped into a single band, examples of some of the frequencies are grouped by band and listed below. These charts also list other frequencies not specifically part of the "business band" but commonly used by businesses. An individual license is still required under GMRS rules. A few manufacturers added these DOT frequencies to Business radios in the 1990s to have more "channels" and aid in selling radios.
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Low-band frequencies
| Name | Frequency | Notes |
|---|---|---|
| 27.490 MHz | Low power, itinerantTemplate:Efn | |
| 27.510 MHz | Low power | |
| 27.555 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 |
VHF frequencies
| Name | Frequency | Notes |
|---|---|---|
| 151.505 MHz | Itinerant | |
| 151.5125 MHz | Itinerant (narrow band) | |
| Red Dot | 151.625 MHz | Itinerant |
| 151.700 MHz | Itinerant | |
| 151.760 MHz | Itinerant | |
| 151.820 MHz | Multi-Use Radio Service (MURS); 2 watts, 11.25 kHz bandwidth | |
| 151.880 MHz | Multi-Use Radio Service (MURS); 2 watts, 11.25 kHz bandwidth | |
| 151.940 MHz | 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 | Multi-Use Radio Service (MURS); 2 watts, 20 kHz bandwidth |
| Green Dot | 154.600 MHz | Multi-Use Radio Service (MURS); 2 watts, 20 kHz bandwidth |
| 158.400 MHz | Itinerant | |
| 158.4075 MHz | Itinerant (narrow band) |
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 | |
| (Brown dpx) | 469.500 MHz | Itinerant |
| (Yellow dpx) | 469.550 MHz | Itinerant |
