The latest (January 15, 2010) FCC frequency allocations can be down loaded here:
< http://www.fcc.gov/oet/spectrum/table/fcctable.pdf >
Footnote US7 contains the restrictions on 70 cm operation:
US7 In the band 420-450 MHz and within the following areas, the peak
envelope power output of a transmitter employed in the amateur service shall
not exceed 50 watts, unless expressly authorized by the FCC after mutual
agreement, on a case-by-case basis, between the District Director of the
applicable field office and the military area frequency coordinator at the
applicable military base. For areas (e) through (g), the appropriate military
coordinator is located at Peterson AFB, CO.
(a) Arizona, Florida, and New Mexico.
(b) Within those portions of California and Nevada that are south of latitude
37° 10' N.
(c) Within that portion of Texas that is west of longitude 104° W.
(d) Within 322 km (200 miles) of Eglin AFB, FL (30° 30' N, 86° 30' W); Patrick
AFB, FL(28° 21' N, 80° 43' W); and the Pacific Missile Test Center, Point Mugu,
CA (34° 09' N, 119° 11' W).
(e) Within 240 km (150 miles) of Beale AFB, CA (39° 08' N, 121° 26' W).
(f) Within 200 km (124 miles) of Goodfellow AFB, TX (31° 25' N, 100° 24' W) and
Warner
Robins AFB, GA (32° 38' N, 83° 35' W).
(g) Within 160 km (100 miles) of Clear, AK (64° 17' N, 149° 10' W); Concrete,
ND (48° 43' N,
97° 54' W); and Otis AFB, MA (41° 45' N, 70° 32' W).
I could have sworn that last time I checked this it said 50 Watts RMS, but that
is pretty much irrelevant for most of our operations. This document is revised
in March, October, and January of each year as far as I can tell.
These are pretty pernicious restrictions for weak signal work, and don't make a
whole lot of sense as the EIRP appears to be unlimited. - Duffey
--
KK6MC
James Duffey
Cedar Crest NM
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