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Jul 22, 2010, 04:43 PM
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g00bd0g's Avatar
Discussion

900 mhz circular polarized antenna?


I'm looking for a 900 mhz circular polarized antenna. Any thoughts?

Thanks!
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Jul 23, 2010, 05:57 AM
Videopilot
Derek_S's Avatar
I have looked before and the only one I came across was this, but only 3-5 dbi

http://www.procom.dk/eng/Page_menu/P.../PCPI_900_RHCP
Jul 23, 2010, 08:48 AM
I think my wheels fell off.
Thumb_number's Avatar
I use this one. Works ok. If you go to their website they have a list of distributors and just find one near you.
Jul 23, 2010, 09:04 AM
Videopilot
Derek_S's Avatar
Here they are in the USA but they cost about $80 before shipping, about double what the usual linear one goes for. Too bad, for the 2.4 band a circular is only like $5 more.

They have RH and LH if you have a preference.

http://www.hol4g.com/ac/product.aspx...196194&sc=3572
Jul 23, 2010, 07:14 PM
I think my wheels fell off.
Thumb_number's Avatar
I paid the price to get the size advantage, they are tiny compared to linear patches. Some thing I had to consider when I have three rx's on the GS. Also remember that after the std 3dBi loss they will not offer any more range than a 3dBi omni.
Jul 23, 2010, 07:23 PM
Videopilot
Derek_S's Avatar
True. I ordered a CP for my 2.4 sytem. I look forward to trying it.

What is GS?
Jul 23, 2010, 07:32 PM
I think my wheels fell off.
Thumb_number's Avatar
Ground Station.
Jul 23, 2010, 07:35 PM
Videopilot
Derek_S's Avatar
You mean 3 video Rxs? Diversity? If so how do you do it with 3 rx's?
Jul 23, 2010, 07:42 PM
I think my wheels fell off.
Thumb_number's Avatar
There is a picture in my blog, but basically use Eagle Eye's and Oracle to pick between the best of the two patches and the omni. Oracle picks the best patch and EE picks between that and the omni.
Aug 21, 2012, 09:54 AM
Registered User
DaveyLC's Avatar
Sorry to drag up an old thread but I built my own (probably cost me a total of 10 to build the pair including cable and crimp connectors).






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