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]> 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]] *On Behalf
Of *Eric Kuhnke
*Sent:* Wednesday, February 17, 2016 5:15 PM
*To:* [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]> wrote:
I may set up a test for this in couple weeks.
Rory
*From:*Af [mailto:[email protected]] *On Behalf
Of *Eric Kuhnke
*Sent:* Wednesday, February 17, 2016 4:41 PM
*To:* [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]> 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]> wrote:
So given this scenario, would 2.4GHz be better? I
can use 5GHz inside the houses.
Rory
*From:*Af [mailto:[email protected]] *On Behalf
Of *Chuck McCown
*Sent:* Wednesday, February 17, 2016 2:57 PM
*To:* [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
*Sent:*Wednesday, February 17, 2016 2:13 PM
*To:*[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]> 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]> wrote:
Ponderosa? Fir? Cedar?
The length of the needles matter.
*From:*Rory Conaway
*Sent:*Wednesday, February 17, 2016 12:51 PM
*To:*[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]*
*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
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