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Through-the-Earth (TTE) signalling is a type of radio signalling used in mines and caves that uses low-frequency waves to penetrate dirt and rock, which are opaque to higher-frequency conventional radio signals.
In mining, these lower-frequency signals can be relayed underground through various antennas, repeater or mesh configurations, but communication is restricted to line of sight to these antenna and repeaters systems.
What else can I help you with?
Do you capitalize general electric clock radio in a sentence?
Yes. It should be General Electric clock radio.
Where can I find the best selection of electric radio controlled airplanes?
Hobby stores such as Hobby-Lobby.com and Towerhobbies.com have a variety of electric radio controlled airplanes to choose from. Prices for electric radio controlled airplanes range from $80 to $350.
Who invented the first electric radio?
Edward Rogers, Ted Roger's grandfather, invented the first electric radio.
What has the author Fritz Vilbig written?
Fritz Vilbig has written: 'Fortschritte der Hochfrequenztechnik' -- subject(s): Radio, Shortwave radio 'Lehrbuch der Hochfrequenztechnik' -- subject(s): Alternating Electric currents, Bibliography, Electric currents, Alternating, Shortwave radio 'Hochfrequenzmesstechnik' -- subject(s): Electric currents, Electric measurements
Can you use a radio as an electric guitar amplifier?
yes you can
When were electric lights and radio invented?
long ago
What year was the electric radio invented?
1891 patent was placed to get all rights to build and operate radio
How do you reset my Pandora internet radio password because you forgot mines?
Reset
Things that can be used as electric energy?
radio,camera,cellphone
What model radio does Taylor Swift have in the Tim McGraw video?
This radio is a General Electric Six P-766B
Who founded Radio Corporation of America and when?
Radio Corporation of America (RCA) was founded by General Electric (GE) in 1919.
Can a radio give you an electric shock?
If your radio plugs into the wall outlet for power, then there are points inside it that would shock you if you were to touch them.
