Here are some sites of interest:

http://www.signalengineering.com/ultimate/hybrid.html

http://mod.cbradiosale.com/index.php?title=Basic_noise_causes_and_combat_strategies

http://wireless.fcc.gov/services/index.htm?job=service_home&id=cb

http://firestik.com/Tech_Docs.htm

http://www.retrocom.com/

http://www.dtbradio.com/whitelist.html

http://www.ripoffreport.com/reports/0/002/ripoff0002105.htm

http://www.hoax-slayer.com/

http://www.download.com/

http://www.eham.net/

http://www.deliver-it.com/truckstops.html

http://www.howstuffworks.com/

http://cityfreq.com/