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QFH 137MHz Antenna 3D Printer File Image 1

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QFH 137MHz Antenna

April 10, 2015

Description Comments Tags

Description

This is a quadrifilar helicoidal antenna structure serving as a base for building a 137MHz NOAA satellite reception antenna.

Computations were done using Mr. John Coppens QFH antenna online calculator (thank you very much!) :
http://www.jcoppens.com/ant/qfh/calc.en.php

Edit 2015-04-11 :

Added a picture received today with the antenna (no amplifier, only the antenna connected to the SDR RTL2832U dongle :-) )

License:

Creative Commons - Attribution - Share Alike

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