How easy would it be to arrange an I-connection on UHF? We did relatively good
linking all our digipeaters together and go one step further should be possible
especially with all the towers we have up. Remember now, some (if not most) of
us have the tower strictly due to the PRB1 and that is only supporting FCC97
use. I have that restriction and knowing my neighbors, they will report any
deviation they can imagine. I can't even put up a TV antenna without them
complaining.
By the way; isn't there something about "reuse of towers" law somewhere,
meaning that if a cellphone provider what to share my tower the zoning board
can do nothing about it?
Hans - N2JFS
-----Original Message-----
From: Charles Coldwell <coldwell@gmail.com>
To: hanslg@aol.com
Cc: towertalk@contesting.com
Sent: Fri, Aug 27, 2010 3:07 pm
Subject: Re: [TowerTalk] Fwd: OT: Satellite Internet
On Fri, Aug 27, 2010 at 2:15 PM, Charles Coldwell <coldwell@gmail.com> wrote:
> On Fri, Aug 27, 2010 at 1:56 PM, <hanslg@aol.com> wrote:
>> I believe they use something around 2.4 GHz, near the "water line". Please
correct me if I'm wrong.
>
> 2.4 GHz is in the ISM band. The water line is at 22.2 GHz.
Actually, I should have known to look in Wikipedia. Quoting their "K
band" article:
"The IEEE K band is a portion of the electromagnetic spectrum in the
microwave range of frequencies ranging between 18 and 27 GHz. K band
between 18 and 26.5 GHz is absorbed easily by water vapor (H2O
resonance peak at 22.24 GHz, 1.35 cm)."
So quoting N2RJ upthread
"Wildblue internet transmits 29.5 to 30 GHz, receives 19.7 to 20.2 GHz"
It seems like their receive frequencies (is that the satellite
receiving or the ground station?) are nicely in the middle of a pretty
broad water vapor resonance.
I think I would stick to terrestrial stuff at 850/1900 MHz, or maybe
digital modes on the HF bands.
--
Charles M. Coldwell, W1CMC
"Turn on, log in, tune out"
Belmont, Massachusetts, New England (FN42jj)
GPG ID: 852E052F
GPG FPR: 77E5 2B51 4907 F08A 7E92 DE80 AFA9 9A8F 852E 052F
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