can get a link through 1000 feet of foliage with 900! in Wireless Service Providers http://www.dslreports.com/forum/r20797006 en Tue, 15 Dec 2009 04:41:34 EDT Tue, 15 Dec 2009 04:41:34 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20809045 Raven1275 : It might work better with the antennas down to about 15-20 feet AGL on the side of the house. Also, try turning the antenna on one end to change polarity as it may get skewed going through all that forest. We have found white pine needles here in the northeast to be very absorbent in the 900mhz band, so getting somewhat under the main canopy may help.

Best of luck...]]> http://www.dslreports.com/forum/remark,20809045 Thu, 17 Jul 2008 21:53:44 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20806835 superdog :
said by thewisperer See Profile :

The pic was not posted cause I thought everyone could envision what looking at a bunch of trees thirty feet away looks like :)

LMAO!!!!.

--
»www.wavecrazy.net
]]> http://www.dslreports.com/forum/remark,20806835 Thu, 17 Jul 2008 15:01:45 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20806217 John Galt :
said by thewisperer See Profile :

The pic was not posted cause I thought everyone could envision what looking at a bunch of trees thirty feet away looks like :)
LOL

I was thinking more along the lines of the house, the mast and radio.

;)

Ten more feet on one end might do it for you.
--
A is A]]> http://www.dslreports.com/forum/remark,20806217 Thu, 17 Jul 2008 13:17:30 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20806188 thewisperer : I know I don't have enough height John but a tower on each end was not feasible in this case. I just thought that 1000 feet would be doable. -85 is ok but no fade margin...

The pic was not posted cause I thought everyone could envision what looking at a bunch of trees thirty feet away looks like :)

thanks though always appreciate your experience and comments]]> http://www.dslreports.com/forum/remark,20806188 Thu, 17 Jul 2008 13:12:58 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20804107 John Galt :
said by thewisperer See Profile :

Both ends are pole mount on the roof of a two storey house.
You don't have enough height. Consider changing at least one end to a higher elevation.

900 MHz is no "magic bullet". While it might perform better than 2.4 GHz, you still have to be careful how you deploy it.

I have pics of both ends but did not bother to post them.
Uh...might be helpful. Better than "word pictures", eh?
--
A is A]]> http://www.dslreports.com/forum/remark,20804107 Thu, 17 Jul 2008 02:12:12 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20803865 thewisperer : yes we did try 5 mhz channels.

the forest is a mix of good Canadian forest, some pine trees
Foliage starts about thirty feet from antenna

The height is roof of two storey house (tripod and ten foot pole)

we now have two grids 15db pac wireless with signal at -85
but I'm not impressed]]> http://www.dslreports.com/forum/remark,20803865 Thu, 17 Jul 2008 00:24:20 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20802314 wolfcreek : how high are the radios. The fresnel zone on 900 is quite large. Beign below that adversely affects its tree penetration]]> http://www.dslreports.com/forum/remark,20802314 Wed, 16 Jul 2008 19:06:58 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20801247 EMC_guy :
said by thewisperer See Profile :

We have been trying to do a 1000 foot link with two XR9's through 1000 feet of foliage.
Are they evergreen foliage? 900Mhz link with even 1W EIRP should work through 1km (3000ft) of typical deciduous foliage. Try setting both radios to lowest modulation (BPSK mode for XR9) to maximize sensitivity.]]> http://www.dslreports.com/forum/remark,20801247 Wed, 16 Jul 2008 15:46:22 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20797595 Gerard780 : Have you tried 5 mhz channels? What kind of foliage is it?

-Gerard]]> http://www.dslreports.com/forum/remark,20797595 Tue, 15 Jul 2008 22:41:46 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20797247 thewisperer : I am located in Quebec Canada and have always been affraid of icing problems in the wintertime. Maybe I'm wrong...]]> http://www.dslreports.com/forum/remark,20797247 Tue, 15 Jul 2008 21:36:27 EDT Re: can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20797230 mtroup : Have you tried using yagi's?

I have great success with M2 14dBi and 17dBi versions.]]> http://www.dslreports.com/forum/remark,20797230 Tue, 15 Jul 2008 21:31:54 EDT can get a link through 1000 feet of foliage with 900! http://www.dslreports.com/forum/remark,20797006 thewisperer : We have been trying to do a 1000 foot link with two XR9's through 1000 feet of foliage. It works but no better than
-85 regardless of the antenna's we tried

Tried panel antennas on both ends: tried sector to grid: tried grid to grid all with very little success.

switched channels, tried vertical, horizontal etc.

noise floor is in mid 90's.

put up the grids today and got -84 and we will see if it holds.

Both ends are pole mount on the roof of a two storey house.

Conclusion: if I look back at my other thread of 5.8 working through trees, you just have to try it to see if it works.
This one does not!

Any suggestions or questions? I have pics of both ends but did not bother to post them.]]> http://www.dslreports.com/forum/remark,20797006 Tue, 15 Jul 2008 20:47:31 EDT