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Development and prototype production of a trapped miner Signaling transmitter/transceiver.

Authors
Simmons-CH
Source
NTIS: PB/82-244260 :82 pages
Link
NIOSHTIC No.
10002467
Abstract
Two versions of a vf transceiver to aid in locating trapped miners were developed and tested. A belt-worn model was produced in both transmitter and transceiver forms. In addition, a quantity of the belt-worn models were fabricated using aluminum wire instead of copper to reduce unit weight. Ten prototypes of a battery cap model vf transceiver were also fabricated demonstrating further unit size and weight reduction while maintaining electrical performance. Although both versions of the vf transceiver are similar electrically, and both are constructed using conventional manufacturing techniques, the battery cap model realizes a lower total weight, smaller volume, and lower production cost than the belt-worn version. Samples of both versions were tested environmentally, and the test data are included in this report.
Publication Date
19810101
Document Type
CP; Final Contract Report;
Fiscal Year
1981
NTIS Accession No.
PB82-244260
NTIS Price
A06
Identifying No.
OFR 95-82
NIOSH Division
PRC;
Source Name
NTIS: PB/82-244260
Performing Organization
General Instrument Corp.
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