Carrier Current Radio.

[saint]

Perhaps oversimply, Carrier Current allows the introduction of an AM radio signal into a buildings electrical system to allow a station to 'broadcast'.

 

http://www.radiobrandy.com/Carrier_Current_Broadcasting-Rb.html

 

http://en.wikipedia.org/wiki/Carrier_current

 

http://www.ruf.rice.edu/~willr/cb/cc.shtml

 

http://www.radiowrench.com/sonic/so02150.html

 

http://www.viswiki.com/en/Carrier_current

 

http://www.fcc.gov/mb/audio/lowpwr.html

 

http://k6prk.org/CARRIER%20CURRENT%20AM%20TRANSMITTER.HTM

 

http://part15.us/files.p15/cct.pdf

 

http://www.arrl.org/tis/info/part15.html