Cable for wireless antennas

[Lyle Williams]

A lot of satellite/LMDS gear does a downconversion at the antenna, allowing
a lower frequency signal to be passed over the coax.  From memory the Galaxy
LMDS connifers drop the signal to about 450MHz.  A preamp at the dish
completes the story, allowing a longish feed with crap coax.

Lyle Williams
VK1XLW






----- Original Message -----
From: "Jason Hecker" <jhecker at www.wireless.org.au>
To: "Jamie Lovick" <jalovick at doof.org>
Cc: <ScapeSmerk at netscape.net>; <wireless at lists.samba.org>
Sent: Monday, January 13, 2003 5:09 PM
Subject: Re: Cable for wireless antennas


> > The 75 ohm RG-6U equivelent cable is not suitable for 2.4 GHz wireless
> > applications.
>
> That's a shame.  I had to recrimp some RG6 the other day and mechanically
> it's the sort of stuff I wish was good for 2.4GHz.  It's quad shielded and
> and is full of a sticky goop in the shield which I presume is to stop any
> sort of water ingress, as you would get in a telecoms pit or on a pole.
> And F-connectors couldn't be easier to cut and crimp, no fangled
> soldering.  So I checked out the RG6 specs and unfortunately it's 75ohm
> and rated at 26dB (from memory) loss per 100m at 1GHz.  I hate to think
> how it is at 2.4GHz.  Ho hum.  It might be alright with WiFi for short
> runs...
>
> Tony Langdon - have you used RG6 in the wrong way?
>
>  --
> Cheers,
> jASON
> ---------------------------------------------
> --== http://www.wireless.org.au/~jhecker ==--
> ---------------------------------------------
>