What speeds are you looking for? You can get about 1meg client side of of the HAM band if you have the license On Wed, Feb 17, 2016 at 5:25 PM timothy steele <timothy.pct...@gmail.com> wrote:
> > On Wed, Feb 17, 2016 at 5:13 PM Sean Heskett <af...@zirkel.us> wrote: > >> I've never had any luck with 2.4 going through much more than the side of >> an aspen tree. >> >> can you set up some 900 test shots? >> >> On Wed, Feb 17, 2016 at 3:09 PM, Rory Conaway <r...@triadwireless.net> >> wrote: >> >>> So given this scenario, would 2.4GHz be better? I can use 5GHz inside >>> the houses. >>> >>> >>> >>> Rory >>> >>> >>> >>> *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Chuck McCown >>> *Sent:* Wednesday, February 17, 2016 2:57 PM >>> *To:* af@afmug.com >>> *Subject:* Re: [AFMUG] Cambium 450i 900Mhz >>> >>> >>> >>> I have not measured one, but if someone has a pine tree nearby and an >>> ohm meter, measure the resistance of the needle. Make sure you jam the >>> probe into the interior of the thing. >>> >>> >>> >>> I am guessing that the water content of the needle absorbs some of the >>> RF energy al la a microwave oven. But anecdotal evidence over the past >>> 10-15 years has shown that pine trees are worse than others so if the >>> needle itself has a fairly low resistance, like 100 ohms, it is acting like >>> a dipole with a termination resistor. That is really going to suck up the >>> signal. >>> >>> >>> >>> Stealth aircraft have microwave absorbing foam on some of their surfaces >>> that operate by similar principles. >>> >>> >>> >>> *From:* Sean Heskett <af...@zirkel.us> >>> >>> *Sent:* Wednesday, February 17, 2016 2:13 PM >>> >>> *To:* af@afmug.com >>> >>> *Subject:* Re: [AFMUG] Cambium 450i 900Mhz >>> >>> >>> >>> the wavelength of 900Mhz is ~33.3cm so a quarter wave length is ~8.33cm >>> (~3 1/4 inch). Ponderosa pine needles (and many other pine needles) are >>> around the same 3 1/4 inch length >>> https://en.wikipedia.org/wiki/Pinus_ponderosa >>> >>> >>> >>> so with water in the needles you have a big 900Mhz RF >>> scattering/reflector ;-) >>> >>> >>> >>> -Sean >>> >>> >>> >>> >>> >>> On Wed, Feb 17, 2016 at 1:47 PM, Sam Lambie <samtaos...@gmail.com> >>> wrote: >>> >>> So if you have a minute to please explain how evergreen trees are >>> terrible on 900 mhz, I would greatly appreciate it. >>> >>> >>> >>> On Wed, Feb 17, 2016 at 1:14 PM, Chuck McCown <ch...@wbmfg.com> wrote: >>> >>> Ponderosa? Fir? Cedar? >>> >>> >>> >>> The length of the needles matter. >>> >>> >>> >>> *From:* Rory Conaway <r...@triadwireless.net> >>> >>> *Sent:* Wednesday, February 17, 2016 12:51 PM >>> >>> *To:* af@afmug.com >>> >>> *Subject:* [AFMUG] Cambium 450i 900Mhz >>> >>> >>> >>> Realistically, what kind of distances do you get through these types of >>> trees? >>> >>> >>> >>> >>> >>> *Rory Conaway **• Triad Wireless •** CEO* >>> >>> *4226 S. 37th Street • Phoenix • AZ 85040* >>> >>> *602-426-0542 <602-426-0542>* >>> >>> *r...@triadwireless.net <r...@triadwireless.net>* >>> >>> *www.triadwireless.net <http://www.triadwireless.net/>* >>> >>> >>> >>> “The ultimate measure of a man is not where he stands in moments of >>> comfort or convenience, but where he stands at times of challenge or >>> controversy” – Martin Luther King >>> >>> >>> >>> >>> >>> >>> -- >>> >>> -- >>> *Sam Lambie* >>> Taosnet Wireless Tech. >>> 575-758-7598 Office >>> www.Taosnet.com <http://www.newmex.com> >>> >>> >>> >> >>
