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[aprssig] MURS

Rahn whiskey7doa at gmail.com
Thu Jan 11 06:22:08 UTC 2007


Thanks Richard, That clear up many of my questions.
Rahn
W7DOA

KCøRNP Richard wrote:

> The FCC rules governing the Multi Use Radio Service (MURS) have
> changed recently (November 12, 2002). The information below reflects
> the new (current) rules.
>
> The citations below in brackets [] are from the MURS Rules, Part 95 of
> Title 47 of the Code of Federal Regulations, especially Subpart J.
> Click here to go to the MURS Rules themselves.
>
> In general:
>
>    * MURS permits the use of a variety of emission modes, but the
> most common is analog voice using FM modulation. Data communications
> are permitted, but the FCC prohibits image transmissions. [95.401]
>
>    * Very narrow bandwidth transmissions (maximum 11.25 KHz channel
> bandwidth, with +/- 2.5 KHz deviation) are permissible on all five
> MURS channels. The older +/- 5 KHz deviation signals (with a maximum
> 20 KHz channel bandwidth) are also permitted (but not required) on the
> two upper channels (in the 154 MHz band). [95.631]
>
>    * The FCC prohibits continuous transmissions in any mode except by
> "grandfathered" (former Part 90) business-type licensees. [95.631(j)]
>
>    * The maximum permissible Transmitter Power Output (TPO) is 2
> Watts. There is no limit on antenna gain. [95.639(h)]
>
>    * MURS is intended for short-range local communications. Antenna
> height is limited to 20 feet above structure or 60 feet above ground,
> whichever is the greater. [95.1315]
>
>    * Repeaters (stations that retransmit simultaneously) and
> store-and-forward packet stations are not allowed. [95.1311]
>
>    * No license is needed. MURS is available for unlicensed business
> or personal use as described in this discussion. [95.1301]
>
>    * Radios suitable for use on the MURS channels are now available
> from dozens of different manufacturers, and are sold by several online
> companies and by consumers electronics store chains.
>
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-- 
Rahn Abbott
W7DOA
73






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