[TowerTalk] Fwd: Fwd: OT: Satellite Internet

[hanslg at aol.com]

 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 at gmail.com>
To: hanslg at aol.com
Cc: towertalk at 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 at gmail.com> wrote:

> On Fri, Aug 27, 2010 at 1:56 PM,  <hanslg at 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

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