[lanse] Re: Wireless networking

  • From: "Chris W" <chris@xxxxxxxxxxxxxxx>
  • To: <list@xxxxxxxxxxx>
  • Date: Wed, 17 Apr 2002 12:46:05 +0100


There must be some downconversion being done in the 'aerial' then I guess as
getting anything over about 500MHz down RG58 is like getting a piano down a
flight of stairs, especially with the cable lengths needed to get from a
roof aerial to a internal reciever.  Plus I seem to remember it goes through
BNC plugs which are crap at high frequency aswell.

I heard it was up on 3GHz somewhere - do you know the exact freq?

Pity I don't know anyone in the technical department who might lend me a
setup for a few weeks - I'm sure that aerial must be crap and could be
modified into a dish type affair.  Guess you don't have any technical info
about the system do you?



Next LAN-Speed Event - 26-28th April.  www.LAN-Speed.co.uk

> -----Original Message-----
> From: list@xxxxxxxxxxx [mailto:list@xxxxxxxxxxx]On Behalf Of Michael
> Knowles
> Sent: 17 April 2002 09:21
> To: list@xxxxxxxxxxx
> Subject: [lanse] Re: Wireless networking
> > I had tele2 come and do a line of sight test but they reckoned they
> couldn't
> > get a signal.  I'm on the limit of the Uxbridge transmitter (it's on
> > Hillingdon hospital apparently) plus I live in a bungalow and am
> surrounded
> > by trees.  Not the best situation for tele2 really.  Kind of
> dissapointing
> > as they were my last chance for getting broadband in the near future.
> I was almost in the same situation Chris, NTL have cabled the street
> adjacent to mine (and it costs 16,000 quid to get them to cable a
> street, so
> can't see that happening in the near future), and BT have ADSL-enabled my
> exchange but although i'm only 2.2Km's from the exchange as the
> crow flies,
> they've trunk-cabled Bracknell in a very roundabout manner and it
> turns out
> i'm only likely to be about 10Km's as the cable travels :-( so
> Tele2 it was
> (plus lots of money out of the account).
> > I'd be interested in the equipment they use for tele2 - ie things like
> what
> > frequency it's on.  It occured to me I might be able to use a
> yagi or even
> a
> > dish to get a better signal.  Doubt tele2 would let me have one of their
> > speedboxes to play with though.
> I've got a "speedbox" (sorry, can't help but laugh at that name,
> it reminds
> me of Concorde), which connects to the aerial on the side of my house via
> some RG58 cable.  The aerial is basically a small lunchbox strapped to a
> pole.
> > Do you know if there is reciever electronics in the 'aerial'?  That
> speedbox
> > thing looked pretty small when I saw it.  Any idea what
> frequency they are
> > on?  Any other kit that can use that frequency?
> I would say there's electronics in both sides of the kit.  The speedbox is
> 32x20x6cm, and the aerial lunchbox is only about 50% smaller than that.
> The frequency is their own, granted to them by the government, and it's in
> the GHz wavelength IIRC (I was interviewed for the position of Network
> Manager for Tele2 in Jan - shame I didn't get the job).
> Cheers,
> Mike.

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