[MLB-WIRELESS] Some help and advice needed

[wilsonj]

Hi Denns,

thanks for your reply. I am going to get in contact with the CSIRO today.
Oddly enough I rang them about video equipment a couple weeks back. They
mentioned the mining work they were doing, but I didn't think it was what I
was after, so didn't persue it.  8-(    Hopefully they can offer some good
advice.

Thanks for the tip.

Regards
Jamie Wilson
----- Original Message -----
From: "Denis Dowling" <ddowling at unico.com.au>
To: "wilsonj" <wilsonj at dodo.net.au>
Sent: Wednesday, February 27, 2002 9:26 AM
Subject: RE: [MLB-WIRELESS] Some help and advice needed


> Hi Jamie,
>
> Sounds like an interesting application. Go a wireless LAN approach if at
all
> possible. I know that the CSIRO are doing some research in a similar
> sounding area. The a remotely controlling undergroung mining trucks. They
> have started using a wireless LAN and a digitized video signal as it is
much
> cleaner without all of the multipath interference you get with an analogue
> signal. You also get all of the remote monitoring and control data for
free.
>
> Your range looks to be pushing limits. What about multiple access points?
>
> Regards,
> Denis.
>
> > -----Original Message-----
> > From: wilsonj [mailto:wilsonj at dodo.net.au]
> > Sent: Wednesday, 27 February 2002 7:53 AM
> > To: melbwireless at wireless.org.au
> > Subject: [MLB-WIRELESS] Some help and advice needed
> >
> >
> > Hi All,
> >
> > I am investigating the possibility of using wireless LAN to transmit
full
> > frame rate video from my RPV (remote piloted vehicle). Because it is for
> > business reasons, I can't use an amateur license and transmit via
standard
> > analogue Tx and Rx. But I am allowed to use spread spectrum. The 10mw
> > allowance without a license is just not enough.
> >
> > I have found a camera that has an embedded PC running Linux, so all I
need
> > to do is find a WLAN bridge?  that runs between 915-928 at 1 watt, or
> > 2.4-2.463 (not 2.483) at a maximum of 4 watts. Preferably 900 band.
> >
> > I want to achieve a distance of 5km. The size of the Rx antenna is not
> > important, but it cannot be a real high gain, as I need a beam width of
> > around 120degrees. The transmitting anteanna also needs to be kept
small,
> > for obvious reasons. But not internal
> >
> > Weight is an issue, and so is size. The smaller and lighter the better.
> >
> > Can anyone offer any help or advice?  I have been looking over the net
for
> > weeks now, at both radio modems and LANs.
> >
> > Thanks for your help
> >
> > Regards
> > Jamie Wilson
> >
> > PS. I also have a 24db parabolic antenna for sale $100 you pay freight.
> > Excellent condition, only used to experiment with.
> >
> >
> > --
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> ss
> IRC at: au.austnet.org #melb-wireless
>
>


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