[Ham-80211] RE: ham-80211 Digest, Vol 30, Issue 3

[ussailis at shaysnet.com]

Several years back I added a polarimetric mod to the precursor to the
NEXRAD weather radar. I believe it was on 2.84 GHz. 

The NEXRAD Doppler radars are in S-band. The tech specs say 2.7 to 3.0 GHz.
This would mess up any useage there as the radars run about 3/4 MW pk, 
about 1KW average, and have an antenna gain around 45 dBi. Not an
incidental signal level. 

NEWRAD is the National Weather Service Doppler weather radar, not to be
confused with those TV station Doppler radars, which I believe operate in
C-band. 


Jim, W1EQO


Original Message:
-----------------
From:  ham-80211-request at lists.tapr.org
Date: Fri,  6 Jul 2007 13:01:21 -0400 (EDT)
To: ham-80211 at lists.tapr.org
Subject: ham-80211 Digest, Vol 30, Issue 3


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Today's Topics:

   1. Re: Ubiquiti Networks (Steve Lampereur)
   2. Re: Re: Ubiquiti Networks (David Josephson)


----------------------------------------------------------------------

Message: 1
Date: Thu, 5 Jul 2007 19:29:32 -0700 (PDT)
From: Steve Lampereur <kb9mwr at yahoo.com>
Subject: [Ham-80211] Re: Ubiquiti Networks
To: ham-80211 <ham-80211 at lists.tapr.org>
Message-ID: <743844.8636.qm at web50103.mail.re2.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1

Depends on who "they" is, I'd imagine.  Ubiquiti is
obviously marketing
some of their products (2.5-2.7 GHz & 2.7-2.9 GHz
products ) for licensed 
users.  There is a small 3 GHz license free allocation
in some countries, and last I check it was a proposal
in the US.

So who are the users of their 2.5-2.7 GHz & 2.7-2.9
GHz products ?  I can 
guess but thats about it.

Original Message:
-----------------
I don't think that anything in the 1 - 2 GHz band
would get FCC approval.
What freq would they use?

Check out the FCC site. I can't find the 3 GHz units
there. I didn't know
3.6 GHz is a license-free freq, so I went looking.

All the info is at  www.fcc.gov/oet  click on
equipment authorization.
Their Grantee code is SWF. Their product IDs all have
a dash in them, ie;
SWF-SR5, so the product code is
'-SR5'

Jim, W1EQO



 
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------------------------------

Message: 2
Date: Thu, 05 Jul 2007 22:22:46 -0700
From: David Josephson <dlj at bach.altaphon.com>
Subject: Re: [Ham-80211] Re: Ubiquiti Networks
To: steve at gbppr.org, "TAPR Mailing List for Ham Radio Use of 802.11"
	<ham-80211 at lists.tapr.org>
Message-ID: <468DD1A6.6020308 at altaphon.com>
Content-Type: text/plain; charset=UTF-8

Steve Lampereur wrote:
> Depends on who "they" is, I'd imagine.  Ubiquiti is
> obviously marketing
> some of their products (2.5-2.7 GHz & 2.7-2.9 GHz
> products ) for licensed 
> users.  There is a small 3 GHz license free allocation
> in some countries, and last I check it was a proposal
> in the US.
>
> So who are the users of their 2.5-2.7 GHz & 2.7-2.9
> GHz products ?  I can 
> guess but thats about it.
There are many licensed allocations in the 2-3 GHz band. Most are
"repurposed" point-to-point microwave, educational TV and LMDS/MMDS
allocations. The wireless carriers have been aggressive in acquiring as
much of this spectrum as they can, and running various wireless internet
services on this band, often at a loss, and then folding them into new
cell phone offerings. Tracking these licenses down in the FCC database
is tricky because in many cases only the original license is shown --
Bozo Community College District might show up for instance, but no way
to know that they leased the spectrum to Nextel. Many of the new
licenses are based on regional allocations and individual transmitter
sites aren't even in the database.

--
David WA6NMF



------------------------------

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End of ham-80211 Digest, Vol 30, Issue 3
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