Digisone and Antenna

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The MITRE Corporation

2019-04-25ELS_228451

Digisonde

An HF Radar System for lonospheric Research and Monitoring TECHNICAL MANUAL Operation and Maintenance Document Version 1.2.6 P LDT Lowell Digisonde International 175 Cabot Street, Suite 200 LowerL Lowell, Massachusetts 01854 DIGISONDE INTERNATIONAL wiw.digisonde.com Telephone: +1 978—735—4752 Facsimile: +1978—735—4754 E—Mail: Bodo.Reinisch@Digisonde.com

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Transmit Antenna m 2:18. The crossed delta transmit antenna has been designed using the NEC modeling program. The de— sign objectives were for a simple antenna that optimally transmits circularly polarized waves vertically up— ward for frequencies between 2 and 16 MHz. LDI usually has this transmit antenna built by a major antenna manufacturer. The Digisonde® user may build his own transmit antenna in consultation with LDI. The tow— er is 30.5 meters (100 ft.) high. It will require a square ground area 44 meters x 44 meters (144 ft. x 144 ft.) for installation. In addition there are recommendations for spacing from the receive antennas. Vertical view lookIna down magneticdirections CoaxCable 30m Earth 7 | c0o 0


Document Created: 2019-04-25 13:36:48
Document Modified: 2019-04-25 13:36:48
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