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SATCOM - Space and Satellite Monitoring Forum Forum for the discussion of the Space Shuttle, Satellites, Military Satcom, and Amateur Radio Satcom communications.

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Old 01-16-2014, 8:38 AM
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Smile Quadrifilar Helix antenna

I am trying to get back into monitoring weather image satellites. The above mentioned antenna is supposed to be the best for this purpose. Does anybody know if these are available already built? I googled it and all I came up with was plans for building one. If anyone knows of any other type of antenna that works well, please suggest it!

Manny
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Old 01-16-2014, 9:41 AM
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There was one on ebay a while back new in the box for that exact purpose. I don't recall how much it was.
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Old 01-16-2014, 12:41 PM
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Yeah, I tried there but nothing!

Manny
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Old 01-18-2014, 1:35 PM
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I have used a quadrafilar helix made by Nationa lRF for over ten years. It really is an amazing antenna. I can get noise free images from about 3 degrees above the horizon. I don't know if they still make them. You probably will not find it listed in their catalog. I would drop them a line and see if they still build them. It was not cheap ten years ago, so I doubt it is today. Even then, it was made to order as they did not stock them.

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Old 01-19-2014, 3:22 AM
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Here you go....

SAT

and if you want a really expensive one...
Timestep Weather Satellite Systems
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Old 01-19-2014, 9:45 AM
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No need to go that expensive for a single purpose antenna. Here is a guy that got decent satellite images from a discone antenna in his attic. Just think of the quality if his antenna was outside and up higher.

Military Comms Monitoring MilAir Frequencies HF VHF UHF
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