Wierd Wireless problem solved

I have a Macbook Pro and use it mainly wireless - unless doing large
file movement, then I connect via copper.

Until recently I had no problems with my wLan and neither had other
people using my wireless network. I then started to get disconnections
on my macbook - pretty regular and also noted the signal had gone down
to almost nothing (was about 27% where I normally use it in the bedroom
(Wireless router is downstairs).

It turned out to be an X-Pad - for those of you who don't know, it is
for sitting your notebook on so that you can use it on your knee without
getting burnt legs. It's properties according to the manufacturers is to
dissapate heat.

Does a great job, but also causes wireless signal loss - whatever is in
the 'heat' pads. Strange thing it does not have the same effect on my
wifes Toshiba??

--
Clive

Life is not measured by the number of breaths we take.....
but by the moments that take our breath away.

Clive wrote:
> I have a Macbook Pro and use it mainly wireless - unless doing large
> file movement, then I connect via copper.
>
> Until recently I had no problems with my wLan and neither had other
> people using my wireless network. I then started to get disconnections
> on my macbook - pretty regular and also noted the signal had gone down
> to almost nothing (was about 27% where I normally use it in the bedroom
> (Wireless router is downstairs).
>
> It turned out to be an X-Pad - for those of you who don't know, it is
> for sitting your notebook on so that you can use it on your knee without
> getting burnt legs. It's properties according to the manufacturers is to
> dissapate heat.
>
> Does a great job, but also causes wireless signal loss - whatever is in
> the 'heat' pads. Strange thing it does not have the same effect on my
> wifes Toshiba??

Antenna location??

Larry

On Tue, 04 Sep 2007 19:50:52 GMT, Clive <clive@cs.com> wrote:

>I have a Macbook Pro and use it mainly wireless - unless doing large
>file movement, then I connect via copper.
>
>Until recently I had no problems with my wLan and neither had other
>people using my wireless network. I then started to get disconnections
>on my macbook - pretty regular and also noted the signal had gone down
>to almost nothing (was about 27% where I normally use it in the bedroom
>(Wireless router is downstairs).
>
>It turned out to be an X-Pad - for those of you who don't know, it is
>for sitting your notebook on so that you can use it on your knee without
>getting burnt legs. It's properties according to the manufacturers is to
>dissapate heat.
>
>Does a great job, but also causes wireless signal loss - whatever is in
>the 'heat' pads. Strange thing it does not have the same effect on my
>wifes Toshiba??

The 17" MacBook Pro has two antennas, both in the LCD display section.
It's rather improbable that the x-pad would shield the antenna unless
your MacBook Pro has some other antenna arrangement, possibly in the
base. Open it up and look inside:
<http://repair4laptop.org/disassembly_apple.html>
<http://www.takeitapart.net/archives/macbook-pro/>

This might also be of interest:
<http://www.hardmac.com/articles/71/page1/>

As for your wife's Toshiba, the antenna location can be determined
once you disclose the model number.

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 jeffl@comix.santa-cruz.ca.us
# http://802.11junk.com jeffl@cruzio.com
# http://www.LearnByDestroying.com AE6KS

Jeff Liebermann wrote:
> On Tue, 04 Sep 2007 19:50:52 GMT, Clive <clive@cs.com> wrote:
>
>
>> I have a Macbook Pro and use it mainly wireless - unless doing large
>> file movement, then I connect via copper.
>>
>> Until recently I had no problems with my wLan and neither had other
>> people using my wireless network. I then started to get disconnections
>> on my macbook - pretty regular and also noted the signal had gone down
>> to almost nothing (was about 27% where I normally use it in the bedroom
>> (Wireless router is downstairs).
>>
>> It turned out to be an X-Pad - for those of you who don't know, it is
>> for sitting your notebook on so that you can use it on your knee without
>> getting burnt legs. It's properties according to the manufacturers is to
>> dissapate heat.
>>
>> Does a great job, but also causes wireless signal loss - whatever is in
>> the 'heat' pads. Strange thing it does not have the same effect on my
>> wifes Toshiba??
>>
>
> The 17" MacBook Pro has two antennas, both in the LCD display section.
> It's rather improbable that the x-pad would shield the antenna unless
> your MacBook Pro has some other antenna arrangement, possibly in the
> base. Open it up and look inside:
> <http://repair4laptop.org/disassembly_apple.html>
> <http://www.takeitapart.net/archives/macbook-pro/>
>
> This might also be of interest:
> <http://www.hardmac.com/articles/71/page1/>
>
> As for your wife's Toshiba, the antenna location can be determined
> once you disclose the model number.
>
>
Thanks for the useful information. My Macbook pro is a C2D, 15" 2.16ghz,
the wifes Toshiba is a A100-338. I'll grant you it's a strange problem
and I like you suspect the antenna will be in the same place as your 17".

I've now been using my MBP for 3 days without the X-Pad and not a
dropped connection. I'll try using it again and see if the signal loss
comes back - very strange, but thanks again; interesting links, but not
brave enough to start taking my MB apart :-)

--
Clive

Life is not measured by the number of breaths we take.....
but by the moments that take our breath away.

Clive <clive@cs.com> hath wroth:

>Thanks for the useful information. My Macbook pro is a C2D, 15" 2.16ghz,
>the wifes Toshiba is a A100-338. I'll grant you it's a strange problem
>and I like you suspect the antenna will be in the same place as your 17".

I couldn't find anything on the A100-338 but found this on the A105
series:
<http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-motherboard-2.htm>
The black and white wires showing in "step 14" are the two antenna
coax cables going from the MiniPCI card on the bottom, to the antennas
inside the LCD display section. Also see "step 11" for where the coax
cables go. You can just barely see one of the white colored antennas
in the enlarged image in "step 6" near the top right:
<http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A105/remove-replace-LCD-screen-1.htm>
Putting an x-pad under the laptop isn't going to affect the wireless
performance.

However, some variations of the 15" MacBook Pro is quite different
from the 17". The antennas are built into the display hinge clutch
area near the base of the LCD display. In my never humble opinion,
this is a terrible location and will probably be affected by the
x-pad. It will also be affected by just about everything on the
table. In the previous Powerbook, the antennas were on either side of
the display, but fairly low toward the hinge.

I've never ripped apart a 15" MacBook Pro, but I have had some
entertainment dealing with range and performance issues. We were in a
local pizza dive after a radio club meeting and most everyone dragged
in their laptops. The pizza dive did not have wireless, but there was
a rather weak but usable hot spot nearby. Everyone's laptop could
connect except the 15" MacBook. The owner demonstrated that if he
stood the laptop on end (with hinges pointed upwards), it would work.
Flat on the table, it just wouldn't work. He also demonstrated with
KisMac how directional the 15" MacBook seemed to be on the table. With
the back of the laptop point in the general direction of the hot spot,
it would barely hear something. Pointed in any other direction, it
was comatose. I wasn't impressed.

>I've now been using my MBP for 3 days without the X-Pad and not a
>dropped connection. I'll try using it again and see if the signal loss
>comes back - very strange, but thanks again; interesting links, but not
>brave enough to start taking my MB apart :-)

If you've never done it before, it's a fairly messy proceedure. Take
lots of photographs so you know how things looked before you ripped it
apart. I've posted a few of my tear down photos, mostly so customers
can see what's really involved in fixing their sardine can like
laptop. For example:
<http://802.11junk.com/jeffl/pics/A75-S213/index.html>
I also have a trick where I take a photo of the top and bottom, print
the photo roughly 1:1, and place the printed photos on styrofoam pads.
As I remove various screws and parts, I push them through the photo in
their corresponding locations. This way I can put the original screws
back in the correct holes.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558