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Old May 24, 2011, 11:12 AM
IBCrazy is offline
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Amherst, VA
Joined Jun 2006
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Quote:
Originally Posted by careyer View Post
Hi there

i've build one of those Skew Planar Wheel for my 910Mhz 800mw Hobbyking RX/TX Set but the result is extremely bad.

Though i tried to keep tolerances as small as somehow possible (<= 1-2mm) it does not give me more than 200m of range in direct line of sight. Tried all channels 1-4 (910-1040 MhZ) and channel 3 ist best. The Standard antennas even give me slighly more range and more robust signal. Any Idea what might be wrong?

Here's a pic of my two antennas:


P.S: 900M Mhz is the primary band for cellphones right over here. Might this affect the range that much? Cellphones are allowed to send 2W .... basestations about 8W.
I have a hard time seeing from the picture, but it looks to me like one is LHCP and the other is RHCP. The interactions between these antennas will be -18 db or so if this is the case.

-Alex
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