[IRCA] field strengths of AM & FM stations by Zipcode

["Mary Anne Sanford" <ke7cgz@xxxxxxxx>]

Don't remember seeing this before in this list.

Find the field strengths of AM day, AM Night and FM stations within U.S.
postal zip codes throughout the U.S.  This web program produces accurate
radio station signal field strengths, organized by zip codes, from the FCC's
CDBS AM and FM database, as of September 27, 2006. V-Soft Communications
provides this data free of charge as a service to its customers and friends.

http://www.v-soft.com/ZipSignal/default.htm

WARRANTY DISCLAIMERS AND LIABILITY LIMITATIONS
DATA, AS PRESENTED, ARE DISTRIBUTED AND PROVIDED "AS IS" AND WITH NO
WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED. USE AT YOUR OWN RISK.



Enter a US zip code to find the signal strength of AM or FM stations serving
the location.
AM stations can be identified by their frequency in kHz or the all upper
case city of license.  AM Night stations have the "-N" appended to their
call signs.
100+ dBu  Extremely strong

80+ dBu   Very Strong

70+ dBu  Strong Principal city coverage

60+ dBu  Good coverage

50+ dBu  Weaker Coverage - may have interference

* Coverage predictions use the standard FCC method, directional antenna
patterns, if used by the stations, and for FM stations the 30 arc-second
NGDC terrain elevation database.  AM daytime station coverage and nighttime
coverage is predicted using the M3 ground conductivities curves. 50 dBu is
the cutoff for prediction for this signal strength retrieving program.  Many
stations may have coverage past the 50 dBu. The majority of FM stations are
protected from interference by the FCC only to their 60 dBu, any coverage
past that signal strength value would depend on whether there are other
stations causing interference, which cannot be reliably predicted using the
standard methods employed herein. Many AM stations operating at night are
subject to interference which is not considered by this

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