Not just cheep devices, PlayStation4 is 2.4 only :-/
On Wednesday, February 17, 2016, Eric Kuhnke <[email protected]
<mailto:[email protected]>> wrote:
Until customers complain their stuff doesn't work, a lot of cheap
laptops, tablets and many low to mid range android phones are 2.4
only.
On Feb 17, 2016 4:55 PM, "Rory Conaway" <[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote:
If I do this, I’ll probably use 5Ghz for the indoor devices to
avoid 2.4GHz where possible.
Rory
*From:*Af [mailto:[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>] *On
Behalf Of *Eric Kuhnke
*Sent:* Wednesday, February 17, 2016 5:15 PM
*To:* [email protected] <javascript:_e(%7B%7D,'cvml','[email protected]');>
*Subject:* Re: [AFMUG] Cambium 450i 900Mhz
I should add that in a typical environment with wood frame
houses/other structures, it helps a lot to choose the 2.4 GHz
channel on the home WiFi AP for each CPE location, so that
none of them overlap with your carefully predetermined 10 MHz
channel.
On Feb 17, 2016 3:50 PM, "Rory Conaway"
<[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote:
I may set up a test for this in couple weeks.
Rory
*From:*Af [mailto:[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>] *On
Behalf Of *Eric Kuhnke
*Sent:* Wednesday, February 17, 2016 4:41 PM
*To:* [email protected] <javascript:_e(%7B%7D,'cvml','[email protected]');>
*Subject:* Re: [AFMUG] Cambium 450i 900Mhz
2.4 in 10 MHz channels goes through a decent amount of trees
within 1-2 miles max, if all the CPEs are nanobridge m5-25
dishes or similar sized reflectors...
I've seen such setups with clients in trees and signals right
around -69 on both chains.
Not a lot of aggregate capacity per sector however.
On Feb 17, 2016 2:13 PM, "Sean Heskett" <[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>> 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
<[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote:
So given this scenario, would 2.4GHz be better? I can use
5GHz inside the houses.
Rory
*From:*Af [mailto:[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>] *On
Behalf Of *Chuck McCown
*Sent:* Wednesday, February 17, 2016 2:57 PM
*To:* [email protected] <javascript:_e(%7B%7D,'cvml','[email protected]');>
*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
<javascript:_e(%7B%7D,'cvml','[email protected]');>
*Sent:*Wednesday, February 17, 2016 2:13 PM
*To:*[email protected] <javascript:_e(%7B%7D,'cvml','[email protected]');>
*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
<[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>> 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 <[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote:
Ponderosa? Fir? Cedar?
The length of the needles matter.
*From:*Rory Conaway
<javascript:_e(%7B%7D,'cvml','[email protected]');>
*Sent:*Wednesday, February 17, 2016 12:51 PM
*To:*[email protected] <javascript:_e(%7B%7D,'cvml','[email protected]');>
*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. 37^th Street • Phoenix • AZ 85040*
*602-426-0542 <tel:602-426-0542>*
*[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>*
*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
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*Sam Lambie*
Taosnet Wireless Tech.
575-758-7598 <tel:575-758-7598> Office
www.Taosnet.com <http://www.newmex.com>
