My answer is... 60 deg. Actually, if I had my way, I'd prefer under 45 deg.
Without detailed specs for the antennas, to understand what the product would
be adding, its hard to suggest the market for each.
UBNT makes wonderful and affordable 90 and 120 deg antennas, and if someone
wants 90 or 120, I dont see why anyone would buy anything different than the
proven product already available. (unless KP's antennas add something)..
What I can say is that there are not any 60 deg dual pol high quality sectors
on the market today, and there is a need for such a product.
Admittedly, I tend to use 90 degs now. But I'd use more 60 deg, if they were
available, even if it meant not gaining 360 deg coverage.
I believe a combination of 5.8 and 5.3/4 is needed in combination to gain 360
coverage. In Urban and heavilly saturated suburban environments 90-120 degree
antennas are almost unusable, atleast not at high modulations. The secret to a
successful WISP is getting the highest modulations possible so they get the
most capacity. And its better to have more capacity for limited coverage, than
not enough capacity for full coverage, because with a more powerful offering,
the take rate will be higher in the narrower coverage.
It is true, that today, with UBNT only certified in 5.8 MIMO, 60 deg antennas
would not likely safely enable full 360 degree coverage in most cases, prior to
sync, and maybe not even then with noise floors. And as well, low density
would warrant cost savings of fewer sectors. And obtaining 360deg is more
important in low density areas. I'm sure this is why 120 and 90s are more
attractive to rural WISPs. But the needs are much different for noisy
Suburban/Urban. 120-90 deg antennas are to risky to use in urban cases. It
should also be noted that spectrum reuse is sometimes possible, in Urban areas,
mounted on opposite sides of penthouses, even without syncing, and often 10Mhz
channels can be used to gain the coverage. Urban will choose 10Mhz, if they
have a low colo cost, and can prove that higher modulation is achievable with
less noise as a result of narrower sectors.
So the decission may come down to which market segment KP wants to target,
rural versus urban. And if they want a unique product, or compete head to head
with others that have
equivellent products.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
----- Original Message -----
From: Shane MacDonald
To: WISPA General List
Sent: Wednesday, November 02, 2011 10:58 AM
Subject: [WISPA] UBNT sectors 120s, 90s, or 60s?
We are trying to decide which degree Ubiquiti sectors to release in December.
Our production line can handle two of the three for a mid December release
date and want your feedback.
The 120 degree version is pretty much a lock but we want your opinion between
the 90s or 60s so we release the sectors you require.
Please reply to the list or send me an email directly as your response will
weigh heavily on our decision.
Thanks,
Shane MacDonald
KP Performance Antennas
Sales Marketing Manager
sh...@kpperformance.ca
www.kpperformance.ca
Direct line 780-702-9977
Fax 780-460-2786
KP Performance Antennas
is a proud sponsor of the Wireless Internet Service Providers Association
(WISPA) www.signup.wispa.org
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