Accession Number : ADD001105

Title :   Method of Repeating RF-Borne Signal Across an Earth Barrier.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Ikrath,Kirt

Report Date : 06 Feb 1973

Pagination or Media Count : 6

Abstract : The patent describes a method of relaying VHF in mountainous terrain. It includes planting a receiver and a transmitter, that operate at the same carrier frequency, on opposite sides of a mount such that the mountain between them shields the receiver from rf radiated by the transmitter, and transferring intelligence on the rf detected by the receiver through the earth to the transmitter by means of a magnetic or seismic link. The magnetic link can transfer audio band frequency while the seismic link can transfer mark-space coded intelligence.

Descriptors :   *Radio relay systems, *Patents, Communication and radio systems, Seismic waves, Magnetic circuits, Earth(Planet), Penetration, Very high frequency, Low frequency, Barriers

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE