[MLB-WIRELESS] transform Linksys WAP11 to Linksys DWL-900+

vak vak at alphalink.com.au
Sun Nov 10 22:22:58 EST 2002


Hi Tom,

The ABS version was V1.

I have built v2 in a die cast box.

Stay away from the RPG die cast boxes, they don't seal well without a lot of
improvising. Jaycar have a better box.

If you want a bigger/better range of die cast boxes, speak to VMP electronics in
Dandenong.

On the Jaycar box, i think the screws were stainless (from memory).

Nope, i ended up making a rectifier/filter/regulator circuit and pumped 15v AC
up the spare 2 pairs on the CAT 5 cable.

Another reason for using die cast boxes is that they are great heatsinks -
especially useful
for regulators.

My aim is to be an AP for this area and have other people (in client mode - most
AP's can do this) connect to me.

Surface mount resistors are easy to get - most electronics shops have them.

Cheers,

Vaskos

Tom Parker wrote:

> Vaskos,
>
> Thanks for the tip (I noticed in your ABS version you had kept the internal
> antenna, I guess this was a beta).  What size case did you go for?  I've got
> a 900AP and am going to try to fit it into a 120x33x95 case
> (http://www.customer-self-service.com/RadioParts/ProdView.aspx?Product=04852
> 720).  Did you replace the screws?  I think they are just tin plated - I'm
> going to look for matching brass ones.  Finally did you just run 5V up the
> ethernet or build a p/s into the case?  I'm planning on using a 7805
> regulator in the case and feeding something like 12V up the cable.
>
> I can probably help people out with these resistors if they have trouble
> getting them (www.rockby.com.au might have them).
>
> Ryan,  It will be interesting to see what the repeater offers.  We need to
> start a wiki on the capability of these APs.  I've a little confused as to
> the features of all the different modes (AP Client, P-P Bridge, P-M Bridge,
> AP, repeater etc.).
>
> Am I right that if too many of us go for pole mounted APs in AP mode we
> won't be able to actually connect without swinging some of them into AP
> client mode? (or using a second AP on a directional in client mode).
>
> Cheers,
> Tom
>
> ----------------------------------
> Tom Parker tparker at netspace.net.au
> http://www.wiresncode.com/projects
>
> > -----Original Message-----
> > From: owner-melbwireless at wireless.org.au
> > [mailto:owner-melbwireless at wireless.org.au]On Behalf Of vak
> > Sent: Sunday, 10 November 2002 11:57 AM
> > To: melbwireless at wireless.org.au
> > Subject: RE: [MLB-WIRELESS] transform Linksys WAP11 to Linksys DWL-900+
> >
> >
> > I have mast mounted my AP and mounted it in a diecast box.
> >
> > A word of advice, if you are intending to do something similar
> > and don't end
> > up using the diversity functions
> > (as per this discussion thread), do what I did. Desolder the
> > internal antenna
> > and terminate the pcb with a 50 ohm surface mount resistor.
> >
> > This is done for 2 reasons:
> >
> > 1) You do not want 15-30mW of RF radiating inside an encased box
> > - your circuitry
> > won't last long.
> >
> > 2)If you desolder the antenna (to avoid the issue as described
> > above), you will
> > have an open circuit termination and most of the energy will
> > reflect back to
> > the source. This may damage the final amplification stage in the radio.
> >
> > Cheers,
> >
> > Vaskos
> > ----------
> >
> >
> >
> > >On Sun, 10 Nov 2002, Tom Parker wrote:
> > >
> > >> Rowan,
> > >>
> > >> I'm pretty sure the antenna is switched externally to the
> > receiver so it
> >
> > >> will only use one at a time but for diverity can selected between them
> > >> automatically to find the one with the best signal.  On the
> > PCB of the 900AP
> >
> > >> you can see both antennas going to a external chip, I reckon
> > this is the
> >
> > >> switch.  Sending on both simultaneously would require two input/output
> > >> stages, since these are commodity priced I think you're out of
> > luck.  So
> > no
> > >> repeater from a single AP today!
> > >
> > >Tom,
> > >
> > >Ok, so now all we need is for someone to hack the firmware to keep track
> > >of which antenna each MAC address is best communicated with. ;-]
> > >
> > >(this is semi serious...)
> > >
> > >Cheers.
> > >
> > >
> > >--
> > >Rowan Crowe - Melbourne, Australia
> > >www.camrecord.com  www.camdiscover.com  www.heyasl.com
> www.sensationbot.com
>
> >
> >
> >
> >
> >To unsubscribe: send mail to majordomo at wireless.org.au
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> >
> >
>
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