Spent another couple minutes on this link today. This is really strange...
The 58DP end, when in 802.11a mode actually picks up a few other sites, at decent signal. About what I'd expect to pick up the other sites at. The 58DP w/ shroud end, which is right downtown picks up nothing. At all. It should be picking up a bunch of garbage from everywhere. So that leaves the question... is the shroud so well designed, and the dish so high-performance, that it's not picking up anything because of its design? Is the alignment super-tight on the dish with shroud? Nobody checked the plumb-ness of the arm before sticking the dish on it, maybe that's why the elevation angles are different from both ends? Maybe I should try taking the dish w/ shroud out of the equation, and just stick a rootenna on that end or something, just to test with? Any ideas or help appreciated Jayson On Wed, Oct 7, 2009 at 9:49 PM, Jayson Baker <[email protected]> wrote: > I will try that. The link is clear. One end atop a 12-story building. > The other end is on the side of a house. > Elevation at the building is about 6200', house is probably around 9000' > > > On Wed, Oct 7, 2009 at 6:07 PM, Mike <[email protected]> wrote: > >> 6 dB difference at the ends? It sounds like the weaker link might be >> seeing an incidental signal from a reflection source. Have you tried >> setting the link to 20 MHz or 10 MHz channels? If it is severe >> multipath a minor change in height may make a big difference. Water >> tower or big steel building close to the link? >> >> At 01:41 PM 10/7/2009, you wrote: >> >Yeah, we flipped polarity. It's an 802.11n link, so shouldn't "matter" >> but >> >changed anyway. No difference. Tried chain 0, chain 1, chain 0+1, no >> >difference. >> > >> >Cables came from Tessco, are brand Wireless Solutions I think. 3' long. >> >Times cable, but look like RFI connectors. The bag they came in said >> >"professionally assembled and tested" - we've used the same on other >> sites >> >without issue. >> > >> >The feed assembly looks to be in correctly. Not much way to screw that >> up >> >on these antennas. My concern of one being bad or something is related >> to >> >the fact that 2-degrees on one end, and 8-degrees on another seems really >> >odd. >> > >> >lol, I don't think the other site is further down than this site is up. >> > >> >Jayson >> > >> >On Wed, Oct 7, 2009 at 12:39 PM, Randy Cosby <[email protected]> >> wrote: >> > >> > > I assume you checked for reverse polarization? >> > > >> > > >> > > >> > > Jayson Baker wrote: >> > > > Got back to both ends of our WB 5.8GHz links today. >> > > > >> > > > RadioMobile says it's 10km, we should have 5-degrees up/down tilt, >> and >> > > using >> > > > the WB dishes see -59dBm. >> > > > >> > > > We're seeing only -80dBm on both polarities. >> > > > >> > > > Cables are new, professionally made and tested. Pigtails are new, >> > > tested. >> > > > Radios are new, tested. >> > > > >> > > > WB dishes... on one end, we have up-tilt of about 2 degrees. >> > > > On the other end, we have down-tilt of about 8 degrees. >> > > > Moving a couple degress each way (or, setting both at 5, like RM >> says) >> > > gets >> > > > almost no signal at all. >> > > > >> > > > One is WB 58DP, one is the same, but with the high-performance >> shroud. >> > > > >> > > > Any thoughts? Bad antenna on one end? >> > > > >> > > > Jayson >> > > > >> > > > >> > > > >> > > >> > >> -------------------------------------------------------------------------------- >> > > > WISPA Wants You! 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