|
Accessing FCC Database Information
Broadcasters
provide a lot of information to the FCC from license applications
to construction permits to ownership reports, there are literally
dozens of forms used by the FCC to collect all sorts of information.
A number of Internet-based tools exist which provide access to
much of the information collected, and one innovative tool that
was recently made available to the public, discussed below, offers
a unique graphical interface utilizing Googles Google Earth
application.
The licensing
information for broadcast radio (AM and FM) and television (TV,
LPTV, and DTV) stations is contained in an FCC database management
system called the Consolidated Database System (CDBS). This database
contains broadcast applications electronically filed with the
FCC, as well as data from applications that were submitted to
the FCC on paper and stored in previous FCC database systems (additional
information on CDBS may be found on the FCCs Web page at
http://fjallfoss.fcc.gov/prod/cdbs/pubacc/prod/help_pa.htm).
One popular
way to search CDBS is by using the Query pages located
on the FCCs Media Bureau Web page. There are three separate
Query pages, one for each of the primary broadcast services:
AM Query http://www.fcc.gov/mb/audio/amq.html
FM Query http://www.fcc.gov/mb/audio/fmq.html
TV Query http://www.fcc.gov/fcc-bin/audio/tvq.html
Another, perhaps
more convenient search tool has been put together by the broadcast
engineering consulting firm of Cavell, Mertz & Associates
(CM&A, Manassas, VA, www.cavellmertz.com).
Called FCCInfo.com (and thats
the URL, as well), this search tool accesses the CDBS to provide
information on AM, FM, and TV data. Additionally, the FCC Wireless
Bureau's Universal Licensing System (ULS) database is used to
obtain information on broadcast microwave and land mobile data.
ULS is the consolidated database and application filing system
for most Wireless Radio Services including Broadcast Auxiliary
Service and Local Television Transmission Service (used by common
carriers to relay television programming material). Additional
information on ULS may be found on the FCCs Web page at
http://wireless.fcc.gov/uls/index.htm?job=about.
Searches supported by FCCInfo.com are shown in the table.
Earlier this year, CM&A made a graphical interface to FCCInfo.com
available to the public, which utilizes the popular Google Earth
mapping application. An example of this interface is shown in
the image below, for a search of AM and FM licensees in the San
Francisco, CA area; in this image, the green callouts are FM stations
and the blue callouts, AM. The various categories of information
available for display are shown in the box to the left of the
image (in the PLACES menu), where for this example only the AM
and FM Station boxes are selected. Clicking on the +
sign next to each box creates a list of all the stations in that
category, and these stations can be individually selected or de-selected
for display.
Some of the
features of this new graphical interface as described on the CM&A
Web site include the following:
Click on any stations callout to display city of license,
signal power, frequency, channel number, antenna height (HAAT),
facility ID, and licensee. Also, links are included to details
from the FCCInfo.com Web site;
For microwave links, paths are plotted above ground using licensed
transmit antenna heights and, when available, receive antenna
locations;
Towers and antenna structures are plotted as a vertical line based
on their registered heights;
Useful for verifying coordinates shown on station licenses and
on tower registrations;
To assure accuracy, broadcast coordinates are automatically converted
from FCC datum to Google Earth's native datum;
Works on Windows, Macintosh, and Linux operating systems;
Program enhancements and updates are provided automatically.
To activate
this Google Earth interface, click on the link http://ge.fccinfo.com/fccinfo.kmz
which will start the Google Earth application (which must be installed
on your computer) and the selection boxes shown in the image will
appear (be sure that the SIDEBAR option is enabled in the Google
Earth VIEW menu). Additional information is available on the CM&A
Web page at www.fccinfo.com/fccinfo_google_earth.php.
The June 22, 2009 Radio TechCheck is also
available in an Adobe Acrobat file.
Please
click
here to read the Adobe Acrobat version of Radio TechCheck
|