Portable through-the-earth radio
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United States of America Patent
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Feb 7, 2017
Grant Date -
Aug 1, 2013
app pub date -
Nov 16, 2010
filing date -
Jul 16, 2010
priority date (Note) -
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Abstract
The present invention provides an apparatus for portable through-the-earth radio (PTTER). The PTTER provides bidirectional voice and/or data communication between a surface radio and a portable radio. The PTTER also provides a transmit antenna having a primary loop and one or more secondary loops configured to increase the magnetic field produced by the primary loop. The PTTER also provides a transportable loop antenna that can be wound around a form for transportation. The PTTER also provides a receive antenna optimal for implementing noise cancellation. The PTTER also provides a navigation subsystem for detecting distance and direction to increase the effective range of the PTTER. The PTTER can be implemented in a backpack form factor.
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