upgrading the internal wifi/wlan set for internet use.

Discussion in 'Panasonic' started by cz75-danwesson, Mar 13, 2010.

Thread Status:
Not open for further replies.
  1. cz75-danwesson

    cz75-danwesson Notebook Guru

    Reputations:
    7
    Messages:
    59
    Likes Received:
    0
    Trophy Points:
    15
    From what i have understood, the CF-29 toughbook has a internal mini-pci/pci express wlan card, and a connector for a external antenna.
    It should be possible to replace it with a more powerful variant.

    http://www.demarctech.com/products/...rwj-600mw-atheros-802.11ag-mini-pci-card.html

    I have read that the AR5414 chipset is capable of delivering 1000mW.


    i can legally run 100W maximum output power, since i have a radio-amateur license.

    more info here:
    http://en.wikipedia.org/wiki/High-speed_multimedia_radio

    I should be able to get some long distance connections with a suitable 20db+ directive antenna.

    Here is a calculator that calculates effective radiated power:
    http://www.csgnetwork.com/antennaecalc.html

    Do anyone have any comments ?
     
  2. Toughbook

    Toughbook Drop and Give Me 20!

    Reputations:
    1,267
    Messages:
    7,361
    Likes Received:
    370
    Trophy Points:
    251
    The CF-29 has a mini pci interface.... Not pci express... I think you should look at the Engenous 600mW wifi card that is very popular with this forum.

    Your card may fit but has an MMCX connector instead of the two U.fl type connections needed for the Toughbook.

    You could probably add an SMA bulkhead connector in place of the pass-through connector located on the back behind the port cover. Or, if you plan on docking the laptop in your vehicle, you could use the connection on the dock for a cantenna or modified long-range wifi dish.

    Welcome to the forum.... Please feel free to browse through the "Stickies" at the top of the Panasonic Forum... There is a lot of great info about what you need.
     
  3. cz75-danwesson

    cz75-danwesson Notebook Guru

    Reputations:
    7
    Messages:
    59
    Likes Received:
    0
    Trophy Points:
    15
    Replacing the U.FL connector with a more sturdy SMA connector and use some silicone to waterproof it is a nice idea.
    i can also replace the internal cable with one that has a MMCX Ant. Connector.



    I know that The Guinness world record for Wi-Fi connection stands at 310 kilometers (about 192 miles), achieved in 2002 by Wi-Fi equipment maker Alvarion and the Swedish Space Corporation. But the companies achieved the distance by launching the equipment in a Swedish weather balloon, thats not the same as a ground measurement, since there are fewer obstacles to block a WiFi signal in the stratosphere.

    Using a weather phenomenon called tropospheric ducting, Amateur Radio
    Station N6CA in California contacted ( on 2.4 GHz ) KH6HME in Hawaii over a 3,982 km path on July 14th, 1994. Now THAT's impressive!
     
  4. Toughbook

    Toughbook Drop and Give Me 20!

    Reputations:
    1,267
    Messages:
    7,361
    Likes Received:
    370
    Trophy Points:
    251
    I still really think that card is overkill... But to each, his own. My point was using a take-off from a U.fl to SMA bulkhead connector out the back... But you would have to remove the passthrough connector in the rear... That's about the only place to fit one in aesthetically anyway...

    Yes... I've seen realistic claims of over 10 miles with wifi dishes pointing at each others... There is one on the Internet that shows it being done from building top to building top... I think it was near the LA area.
     
  5. Azrial

    Azrial Notebook Deity

    Reputations:
    598
    Messages:
    1,403
    Likes Received:
    87
    Trophy Points:
    66
    I used to have a link of 2.3 miles that was fairly reliable, depending on the weather. It was line of sight across a lake to share Wi-Fi.

    I was using a USB Wi-Fi dongle on a old PrimeStar Dish mounted on a 10" foot pole on one end with the dongle re-centered at the apogee of the Parabolic. I used USB cable and a waterproofed powered hub mounted one pole to make sure to maximize power to the dongle. The USB cable was a lot more forgiving of line loss.

    On the far end I used a home rolled Cantenna that was made with an old Christmas Cookie Tin and a piece of heat pipe expander. The system was about, as a rough guesstimate, 85% reliable.

    But no, while it worked well for being so low-buck, you could not get it into a Toughbook case... :D
     
  6. Toughbook

    Toughbook Drop and Give Me 20!

    Reputations:
    1,267
    Messages:
    7,361
    Likes Received:
    370
    Trophy Points:
    251
    That's my man! Azrial McGyver! ;)

    I've always wanted to try to play around with stuff like that but I am surrounded by wifi signals.... Plus I have tether so I am never at a loss... Yet. But I have an old mini dish up in the attic for future endevours...
     
  7. mattpayne

    mattpayne Notebook Consultant

    Reputations:
    122
    Messages:
    180
    Likes Received:
    4
    Trophy Points:
    31
    hahahahaha!!

    a coffee, keyboard moment there!!

    sorry.... Did i hear this correctly!!! someone that lives in Texas, has a penchant for indestructable laptops, has a large selection of guns, probably drives an M1 Abrahams to the shops is calling a hipower wifi card 'overkill'!! :p

    sorry, while i rollabout loving the irony of the comment! :cool: :p ;) :D :p :p
     
  8. cz75-danwesson

    cz75-danwesson Notebook Guru

    Reputations:
    7
    Messages:
    59
    Likes Received:
    0
    Trophy Points:
    15
    thats not overkill..

    This is:
    http://oh3tr.ele.tut.fi/~ftp/pa/13cm_400W_LDMOS_PA/ 400W !
    He is using 5 MRF21120 transistors, rated at 150W each.

    This one makes about 100- 120W
    http://www.sk0ct.se/2g3pa/2g3pa.htm

    100W in to a 24db directive antenna is 15316.3 Watts ERP! That is 15.3 Kilowatts of effective radiated power.

    400W in to a 24 db antenna is... hold on your hats.. 61265.5 Watts ERP!
    Yes folks, thats 61.2KW ERP! :eek:
     
  9. Alex

    Alex Super Moderator

    Reputations:
    4,081
    Messages:
    4,293
    Likes Received:
    10
    Trophy Points:
    106
    The EnGenius EMP-8602 Plus S is cheap, 600mw , sensitive and well tested by forum members here

    It uses the standard u.fl connectors (2)

    Purchase a U.FL to RP-SMA Jack Bulkhead Pigtail and connect to either u.fl output to enable connection to an external high gain antenna



    Alex
     
  10. Azrial

    Azrial Notebook Deity

    Reputations:
    598
    Messages:
    1,403
    Likes Received:
    87
    Trophy Points:
    66
    :eek: Thanks, We were in a pretty remote area, and necessity is the Mother of Invention.

    We have a saying in my business, if you didn't overkill it, it's probably not dead enough... :D
     
Loading...
Thread Status:
Not open for further replies.

Share This Page