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RB532 nstream dual one antenna and splitter

Posted: Tue Aug 08, 2006 10:53 am
by stealth
Anyone using this configuration in 5Ghz band ? I would like to use it, but I am not quite sure about interference from splitter. I cannot use two antennas for RX and TX, so I plan to use splitter instead.
RB532               splitter --- antenna -------   same on the other side

Re: RB532 nstream dual one antenna and splitter

Posted: Tue Aug 08, 2006 11:33 am
by trtmrt
are you shure you not gonna burn radio ??P:) ..
there are antenna w/ 2 feed ... dual polarity ... etc..:)

Posted: Thu Aug 17, 2006 11:42 am
by stealth
So, I had to test this myself and here is result.
I can't use this configuration because of two reasons.
1. In nstream dual, you can't use wds. Wireless bridge is impossible.
router - RB532 - wireless - RB532 - router
I tried to avoid this by routing, but mikrotik has so shitty ospf implementation, that do not work in our enviroment (debian Linux quagga). It do not even find neighboor ospf router.
2. nstream dual works fine on the desk, but when splitter was used it overloads each radio by noise and interference, so only 6-18mbit modulation was used, and real throughput was about 1mbps. Splitter that I used has >30dB separation and it wasn't simply enough. I tried frequencies from 5.1Ghz band on RX and 5.8 on TX, etc.

Has anyone success with those dual feed horn antennas ? I have never seen those. Any url ?

Posted: Thu Aug 17, 2006 5:17 pm
by jp
Look for the gabriel QFD2-52 antenna on google. I have one but haven't used it yet. Had the steal the radios for another job.

Posted: Thu Aug 17, 2006 6:38 pm
by jober
I found it here:
Man thats pricie.
$ 505.00 is the list price but I can get it a lot cheeper.

I'm looking at the specs and I don't see anything about having two connectors.
Are you sure they have one for H pole and one for V pole?

Posted: Fri Aug 18, 2006 4:04 am
by jp

In the photo above, it is the leftmost antenna. The right antenna is a regular gabriel 2' dish.