My exact hardware config at each end is as follows:
CM9 radio card
8" u.fl to N-female pigtail (hand selected by me)
5' LMR-400 jumper (hand made by me)
Hyperlink 27db grid
Software is Mikrotik 2.9.11. Netstream mode with polling on. 5825MHz
Mikrotik bandwidth speed test reports 23.6Mb/s in TCP mode one way and
34.3Mb/s in UDP mode one way.
This is a test prior to deploying a 90deg 17db sector at one end. I
will also be changing the radio cards to SR5's for further testing.
Eventually, I will deploy four 90deg sectors there, but only two will be
deployed in the next 30 days.
I intend to make this location the main feed into my network to replace
my existing T-1 circuits that are scattered around my network, allowing
higher burst speeds and better sharing of my total bandwidth. I will
also replace many of my current 2.4GHz TurboCell backhauls with 5.8GHz
Netstream backhauls, and as I have a non telco owned fiber available to
me at this new location, I will be better placed when my current T-1
contracts expire. My existing circuit prices are good til April of
2007, but new circuit pricing went up 30% this year and I have been told
to expect another 20% increase on top of that when I have to renew in
When I set this up for initial testing, I got results that were 20db+
below expected link quality. After some testing, I determined that the
SR5 cards I was using were part of the original batch that had
problems. Replacing them with CM9's gave me results within 1db of the
link calculator on the RF Linx page. My replacement SR5 cards got here
last Friday, and now I am just waiting for good weather and light
workload day to go setup the next test.
KyWiFi LLC wrote:
Where are you seeing the -62 reported? StarOS? Mikrotik?
According to my calcs, your link below is a perfect link. The
link calculator I use estimates your loss at each side to be 2dBm.
Shannon D. Denniston, Co-Founder
KyWiFi, LLC - Mt. Sterling, Kentucky
A Broadband Phone & Internet Provider
Wireless Broadband, Local Calling and
UNLIMITED Long Distance only $69!
No Taxes, No Regulatory Fees, No Hassles
FREE Site Survey: http://www.KyWiFi.com
----- Original Message -----
From: "Blair Davis" <[EMAIL PROTECTED]>
To: "WISPA General List" <firstname.lastname@example.org>
Sent: Tuesday, February 21, 2006 7:16 PM
Subject: Re: [WISPA] 5.8ghz low power distance limitations
I have an 8 mile link with CM9 cards (17db) and 27db grids. This link
has clear LoS.
I get -62 sig strength at each end....
Kurt Fankhauser wrote:
How much range can I expect to get with a 802.11a setup with 13db
radio’s and 24db panel antennas? The reason I am asking is because I
am thinking about using a pair of Tranzeo TR-5a-24f for a 5 mile link
but I am skeptical about the low power.
114 S. Walnut St.
Bucyrus, OH 44820
WISPA Wireless List: email@example.com