At least Bluetooth will work better if you have no 2.4 GHz WiFi in the house.

I discovered yesterday I had to disable “Bluetooth Collaboration” on the WiFi 
card in a new laptop for it to even pair with a Bluetooth mouse.  That seems 
counter intuitive.  Seems like a collaboration feature should make them play 
nice, not fight to the death.


From: Rory Conaway 
Sent: Wednesday, February 17, 2016 7:16 PM
To: af@afmug.com 
Subject: Re: [AFMUG] Cambium 450i 900Mhz

I understand guys.  I’ll work it out when I figure out what my radios are.

 

Rory

 

From: Af [mailto:af-boun...@afmug.com] On Behalf Of Ken Hohhof
Sent: Wednesday, February 17, 2016 6:15 PM
To: af@afmug.com
Subject: Re: [AFMUG] Cambium 450i 900Mhz

 

Also trying to get a good signal in the far reaches of some houses can be a lot 
more challenging at 5 GHz than 2.4 GHz.

 

From: Eric Kuhnke 

Sent: Wednesday, February 17, 2016 7:03 PM

To: af@afmug.com 

Subject: Re: [AFMUG] Cambium 450i 900Mhz

 

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" <r...@triadwireless.net> wrote:

If I do this, I’ll probably use 5Ghz for the indoor devices to avoid 2.4GHz 
where possible.  

 

Rory

 

From: Af [mailto:af-boun...@afmug.com] On Behalf Of Eric Kuhnke
Sent: Wednesday, February 17, 2016 5:15 PM
To: af@afmug.com
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" <r...@triadwireless.net> wrote:

I may set up a test for this in couple weeks.

 

Rory

 

From: Af [mailto:af-boun...@afmug.com] On Behalf Of Eric Kuhnke
Sent: Wednesday, February 17, 2016 4:41 PM
To: af@afmug.com
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" <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 

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 

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

r...@triadwireless.net

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

 

 

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