main www.fcc.gov  
media bureau http://www.fcc.gov/mb/ media bureau
Video Division (TV LPTV DTV) http://www.fcc.gov/mb/video/
Audio Division (FM AM) http://www.fcc.gov/mb/audio/
Cable+ Engineering Div. http://www.fcc.gov/mb/engineering/
U.L.S. (Microwave+) http://wireless.fcc.gov/uls/
A.S.R. Antenna Structure Registration http://wireless.fcc.gov/antenna/
CFR FCC Rules http://www.access.gpo.gov/cgi-bin/cfrassemble.cgi?title=200247
http://www.fcc.gov/mb/audio/bickel/amfmrule.html
Search rule numbers:
http://www.fcc.gov/mb/audio/bickel/47CFRrule.html
http://ecfr.gpoaccess.gov
The public and broadcasting http://www.fcc.gov/mb/audio/decdoc/public_and_broadcasting.html
Public inspection file
http://www.fcc.gov/mb/audio/decdoc/public_and_broadcasting.html#PIF
EAS http://www.fcc.gov/eb/eas/

Online filing:
Log in page TV/FM http://svartifoss2.fcc.gov/cgi-bin/ws.exe/prod/cdbs/forms/prod/cdbsmenu.hts
Forms list http://www.fcc.gov/formpage.html

FEES-
Main FEE page http://www.fcc.gov/fees/
http://www.fcc.gov/fees/appfees.html
Broadcast FEES 2004 http://hraunfoss.fcc.gov/edocs_public/attachmatch/DOC-249892A3.pdf
Wireless STA http://wireless.fcc.gov/feesforms/feeguide/
Form 159 Remittance http://www.fcc.gov/formpage.html

FRN-# https://svartifoss2.fcc.gov/cores/CoresHome.html
FCC Registration
If you wish to conduct business with the FCC, you must first register through the FCC’s COmmission REgistration System (CORES). Upon registration, you will be assigned a FCC Registration Number (FRN). This number will be used to uniquely identify you in all transactions with the FCC.
Searches:
TV http://www.fcc.gov/fcc-bin/audio/tvq.html
FM  http://www.fcc.gov/mb/audio/fmq.html
AM http://www.fcc.gov/fcc-bin/audio/amq.html
Station mailing Info http://www.fcc.gov/mb/audio/bickel/mailaddr.html
Antenna Search: http://svartifoss2.fcc.gov/prod/cdbs/pubacc/prod/ant_search.htm
OWNERSHIP REPORTS:  http://gullfoss2.fcc.gov/prod/cdbs/pubacc/prod/own_search.htm

CDBS Public Access database search for applications and other info
http://svartifoss2.fcc.gov/prod/cdbs/pubacc/prod/cdbs_pa.htm

Towers:
http://wireless.fcc.gov/antenna/
http://wireless.fcc.gov/antenna/documentation/paintingLighting.html

Broadcast Self-Inspection Checklists
http://www.fcc.gov/eb/bc-chklsts/

Unattended Operation
http://www.fcc.gov/mb/audio/bickel/noonehome.html

Tools:
Radio Tools Popup — Requires Javascript.
http://www.fcc.gov/mb/audio/bickel/radio_tools.html
Great little tool links to all kinds of data

Online conversion tools
http://www.fcc.gov/mb/audio/bickel/findvalues.html
Conversions at link:
FM Channel to Frequency, FM Frequency to Channel
TV Channel to Frequency Band, Feet to/from Meters
Miles to/from Kilometers, Field Strength Units: dBu to/from mV/m
Power Units: kW to/from dBk, Power: Relative Field
Transmission Line Efficiency (FM broadcast band only)
Electrical Degrees To/from Meters

Online mapping! http://wireless2.fcc.gov/ULSGis/ULSearchGis.jsp
Area maps FCC: http://www.fcc.gov/oet/info/maps/areas/

Childrens television:
http://www.fcc.gov/mb/policy/kidstv.html
online filing: http://svartifoss2.fcc.gov/prod/kidvid/prod/elecfile.htm

Contacts at FCC:
Download phonebook! and Search : www.fcc.gov/fcc-bin/findpeople.pl
Main Email (not all) www.fcc.gov/contacts.html