We
love the Agere wireless products, mainly because of the superior tools,
and the excellent support for multiple operating systems such as Linux
and XP. We also love that each Orinoco PC card has a port for adding
an external antenna and they work with NetStumbler.
Quick Tip:
"Hacking" your Agere Orinoco
RG-1000/1100 Access Point and USB client to add external antenna's.
* WARNING - doing this may void
your warranty, proceed with caution!
Open your RG-1000/1100
by prying off the rear cover after unplugging the unit from the wall.
Remove the power cord and network cable. Now, examine the rear of
the unit and find the RJ-11 phone jack and the power jack. Below the
RJ-11 and above the power jack, you will see a small rectangular plastic
clip holding these Orinoco RG together. With a small flathead screwdriver,
push down gently and push to the left. Once you loosen this, you need
to remove the rubber "pad" on the very bottom of the RG,
and you will find a smaller clip, pry this clip open, and then pull
the 2 sides of the RG apart. Be advised that there are smaller clips
that should loosed once these 2 are pryed apart. Gently, push and
pull each side of the RG and it will eventually come apart.

The RG-1000 AP opened and modified for external antenna connection(Click
to Enlarge)
Once the RG is apart, you will have 2 sides, one with all the components,
and a plastic side. Using a Dremel tool, or similar cutting device,
or even a drill with a larger size bit, make a small hole below the
RJ-11 jack in the component side. This hole should be slightly larger
than the diameter of the external antenna cable. Once you make this
hole, remove the plastic plug from the end of the Orinoco PC Card
(the antenna plug), and plug in the Lucent pigtail. Put a piece of
tape over the end to hold the pigtail in place. Snap the cover back
on and hook up your external antenna. Power up the unit and enjoy
the increased signal strength to your wireless clients!
Note:On the RG-1100, there is no cutting required, since there is
no phone jack/modem installed. The jack is covered by a sticky plastic
tab, remove this, pry open the RG-1100 and simply insert the antenna
into the card. Put a piece or tape over the antenna cable to hold
it in place, and snap the RG-1000 back together. You can now attach
your antenna and you are ready to go, no cutting needed!
The RG-1000 with "hacked" external antenna pigtail sticking
out. (Click to Enlarge)
Hacking the Orinoco USB client to add an external antenna
The Orinoco USB client can also be "hacked" to gain better
signal strength by adding an external antenna. The USB client is very
easy to open and add your pigtail, only requiring a small hole be
drilled at the very top of the client on the front side. The first
step is to pry open your USB client by pulling up on the top, and
using slight pressure, pull down on the bottom base. This should separate
the base from the plastic top, allowing you to pull apart the 2 core
components as shown in the screenshot below:

The 2 major USB client components, the cover and the PC card holder.(Click
to Enlarge)
As you can see, inside the USB client is a small PC board that holds
the Agere Orinoco PC card. You do not need to remove the card to add
an external antenna. Take the cover, and find the LED lights on the
front. Follow the seam up to the top of the cover, and drill a 1/4"
hole in the top or use a Dremel tool to cut out an opening. Once you
cut the opening, you should use a larger drill bit and drill out the
middle of the 2 plastic fins under the top cover. If you look directly
into the hole you drilled in the top front, you will see what we mean,
These fins will block the pigtail from making a proper connection
into the top of the PC card, and if you do not remove the fins or
drill them out, the USB client will not fit back together properly.
The Orinoco USB client components after we took it apart. (Click to
Enlarge)
Next, remove the plastic plug from the end of the Orinoco PC Card
(the antenna plug), and then put the end of the pigtail through the
hole you drilled in the top, and plug in the Lucent pigtail. Put a
piece of tape over the end to hold the pigtail in place. Snap the
cover back on the USB base and hook up your external antenna. Power
up the USB unit and enjoy the increased signal strength from your
Access Points.

The Orinoco USB client with external antenna pigtail attached (Click
to Enlarge)
The Orinoco USB attached to pigtail and mobile antenna for sniffing/wardriving.
(Click to Enlarge)
Once you
do this, you should be able to plug in any external antenna that is
compatible with the Agere pigtail. For more information on external
antenna's and pigtail cables, we suggest you visit Hyperlink
Technologies.
Why would I want to do this? Well, we prefer to use the USB client
to do all our wireless sniffing. This is because the USB client, along
with (3) Belkin 10 foot USB extension cords allow the USB client to
be up to 30 feet away from the laptop, giving us more flexibility
with the external antenna. Without the USB client, we have a 19"
Agere pigtail, hooked directly up to very thick LMR-400 cabling, which
is very rigid. Using the 30 feet of USB extension cables gives us
30 feet of distance, without sacrificing any loss of signal that you
would get with LMR cabling or even a longer pigtail. Try it, we think
you will agree!
***
Please keep in mind that opening your Orinoco hardware and drilling
holes, etc, can void your warranty. We take no responsibility for
you if you screw things up. This is merely a guide if you decide that
you wish to try this.