PORTABLE THROUGH-THE-EARTH RADIO

The present invention provides an apparatus for portable through-the-earth radio (PTTER). The PTTER provides bidirectional voice and/or data communication between 5 a surface radio and a portable radio. The PTTER also provides a transmit antenna having a primary loop and one or more secondary loops...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PUZAKOV, Vladimir, SVILANS, Markus, KWASNIOK, Peter, ROPER, Michael
Format: Patent
Sprache:eng
Schlagworte:
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