Hi,
Buy a vertical omni and do a site survey. If everything looks clear,
install it. Hook up customers. However, when/if the noise starts, be
prepared to sectorize. :)
Travis
Microserv
Brian Rohrbacher wrote:
Let me add a little about what I have to work with. There are 4036
people in the township which is my main coverage area (I fork out a
little, but the number are inline with these). 2,288 have access to
DSL and Cable. This leaves 1748 people to go after. How many of
those want broadband? I just did a quick google and the only number I
saw said 30% of rural Americans have broadband. So I'll go with that
for my number of who wants it. 30% is about 500 people. I guess this
means my township that is 36 square miles has almost 15 subscribers
per square mile that are ripe for the picking. And then add the fact
that there are 2 total WISPs in this area. Cut the subs in half. I
have 7 subs per square mile to go hook up. Wait, it seems like 50% of
my site surveys fail due to the darn trees, at least I can still get
those 3.5 subs per square mile. :)
Now that I have given a little more info, do you guys still recommend
sectors?
Brian
Brian Rohrbacher wrote:
Problem is I might only get 10-15 subs at these sites in the next
year. Lets say I can buy 10 APs. I'd rather have 10 sites with
omni's than 5 sites with 180* sectors.
At 15 subs a site I'd have 150 subs on 10 omni's at $35 a month.
That is $5250 a month.
If I sectorize 5 sites with 15 subs that is 75 subs and only $2625
added to the monthly income.
Back to reality. I can't afford 10 APs.....but still, I don't see
sectors as being such a great thing. What is the point of doubling
the cost of a pop for no gain of subscribers?
Back to my question. If a guy wanted to use omni's for 900. What is
a good choice?
Brian
Chris Cooper wrote:
We have a legacy 900 omni at 750' AGL. It really reaches out and
touches
remote customers, but it is visible to every other cell in the
region and
affects channel planning. Stick to sectors, they might be more
expensive up
front but long term you will have more options.
c
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Marlon K. Schafer
Sent: Tuesday, November 07, 2006 7:40 PM
To: Barry at Mutual Data; WISPA General List
Subject: Re: [WISPA] 900MHz Omni and gain
Due to the eirp limits at 900 (36dB total) your antenna choice
really should
take into account the radio gain first.....
Having said that, a lot of people put in the high gain 900 omni
antennas and
don't seem to have much trouble with them.
I agree with the sector idea though.
The 900 that I'm using now is trango. They have almost got the full
eirp
built right in to the radio/antenna system as it comes from the
factory.
The down side is that it takes 6 ap's to cover 360*. That can get
spendy.
Especially if you pay rent per antenna.
As a rule, we are sectorizing more and more sites these days. Even
the ones
out in the sticks. There are too many other users out there showing
up all
of the time.
latetrs,
marlon
----- Original Message -----
From: "Barry at Mutual Data" <[EMAIL PROTECTED]>
To: "WISPA General List" <wireless@wispa.org>
Sent: Tuesday, November 07, 2006 6:01 AM
Subject: Re: [WISPA] 900MHz Omni and gain
Hello Brian,
No more then 8db in my playbook anymore. And horz. if at all possible.
Sectors on 900 is the best way to go too.
I got an Antel 11db with downtilt that I would sell if you really
want a
vertical omni. Heavy duty antenna.
Barry
Tuesday, November 7, 2006, 8:20:28 AM, you wrote:
BR> I looking for input on what vertical 900 omni to use. I have
heard
BR> statements from Marlon like "I'd never use a 2.4 omni over such
and
such
BR> gain.....", because of the beamwidth and such. Anyway what are
the
BR> opinions of the use of the 900 omni?
BR> http://www.pacwireless.com/products/omni_900mhz.shtml
BR> Brian
--
Best regards,
Barry mailto:[EMAIL PROTECTED]
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