Simple system for Monitoring Weather Satellites:

FM Receiver For 134 - 141MHz   (A double conversion  superhetrodyne with pll)

IT'S EASY TO CAPTURE REALTIME IMAGES LIKE THIS DIRECTLY FROM SPACE ON YOUR PC!

 

"LOOKING AT THE EARTH FROM SPACE"

 [ Back ]   Last update: 01. 01. 2007

 

Quadrafilar Helix Antenna

 

The best antenna for 137.5 MHz is the socalled Quadrifilar Helix antenna (QFHA).
You have to construct it yourself.

 

Paul Hayes QFH Antenna (professional design)

Quadrafilar Helix (QFH, QFHA, QHA): the best performing antenna...:

 

QFHA 1 coax + wood - simple design

QFHA 2 coax + wood - simple design

QFHA 3 PVC tube + coax + Al wire

 

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