[amsat-bb] Re: More Clutter on 2.4 GHz
k0vty at juno.com
Sun Oct 8 19:42:28 PDT 2006
Maybe I should put a couple of pence into this for what ever it's worth
For the last four years I have had my ISP hook up via 2.4 gHz
A Cisco 350 system over a 15 mile connect at 100 mw.
Weather has not been a factor.
I use a 36 inch vertically polarized dish .
50 feet of LMR 400 coax to the Cisco transceiver.
This is possible because the dish looks down a water shed where the fall
is equal to at least 3 feet per mile.
That makes trees disappear so to speak.
All of this might be a bit unusual , but it is possible.
I also use 2.4 gHz for Sat TV extention
3 systems using 433 mHz for data and control .
My shack is a separate building 50 feet behind the house.
The only interference I had on 2.4 gHz was when Santa provided a
telephone remote that was a frequenncy hopper on 2.4 gHz.
I gave that back to Santa and asked for 900 mHz spread spectrum unit
No more interferrence.
And last, I live in a 150 person village 50 miles from all the big city
I see referred to here on the BB
Joe Murray K0VTY
Amsat # 860
Area Coordinator for NE
On Mon, 9 Oct 2006 00:47:25 +0100 (BST) Trevor <m5aka at yahoo.co.uk>
> I presume the eventual aim must be world-wide sales to achieve
> economies of
> scale. Quite frankly 10 km is a joke as you probably wouldn't even
> get that
> hilltop-to-hilltop. In a real-world environment a max range of 1 km
> would be
> more likely.
> As I read the latest Ofcom Licence Excemption document it looks like
> devices may be limited to 100 mW in the UK, see
> 73 Trevor M5AKA
> --- Roger Kolakowski <rogerkola at aol.com> wrote:
> > I googled the product with the "50" at the end of the part number
> > several sites came up with "claimed" ranges between 5 and 10
> > Because the product seems only to be available in the UK I didn't
> convert it
> > to miles but I think it's 3-6 of them.
> > Roger
> > WA1KAT
> > ----- Original Message -----
> > From: "Trevor" <m5aka at yahoo.co.uk>
> > To: "AMSAT BB" <amsat-bb at amsat.org>
> > Sent: Sunday, October 08, 2006 4:03 PM
> > Subject: [amsat-bb] Re: More Clutter on 2.4 GHz
> > > --- Roger Kolakowski <rogerkola at aol.com> wrote:
> > >
> > > > And these radios have a range of 5 to 10 kilometers while you
> get to
> > hold
> > > > them up against your head while transmitting!
> > >
> > > I didn't see any range figures on the website, I'd have though a
> max range
> > of 1
> > > km (0.6 miles) is more likely.
> > >
> > > 73 Trevor M5AKA
> > >
> > >
> > >
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