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WAG54G V1.2 Transmit Power Control - is this the cause?

Discussion in 'Other Linksys Equipment' started by Somebody, Feb 11, 2005.

  1. Somebody

    Somebody Network Guru Member

    I have a WAG54G V1.2 and am running firmware 1.02.9AU. My laptop has an Intel 2200BG mini-PCI card fitted, and the Intel Proset software has a Details button that tells me about various settings that are operational.

    One of the items listed is called CCX TPC which appears to be the current power level in use by the card. The Help file explains this item as "Cisco Compatible Extensions Power Levels".

    Tried to find out more about this on the net but nothing definitive for B and G networks, though TPC seems to be required for A networks. Seems that the access point can instruct the client (my PC) to vary its power so as to minimise potential radio interference.

    Practical tests show that if I operate as G (54Mbit) then the PC gets told to use a measley 10.0mW, but when operating as a B (11Mbit) then it is gets told to operate at 31.6mW. No prizes for guessing which speed gives the most reliable connection.

    Given the number of other bugs that have been seen in the WAG54G's firmware, maybe a duff decision as to what power to tell the PC to use when operating in G mode is at the root of the variable results that people seem to be having.

    Now, could it be that some G cards' drivers don't take any notice of the access point's power requests (and hence work fine), whereas other cards' drivers do - and thus have unreliable G wireless links?

    Just a theory at present - are there any others who are noticing similar operation?
  2. Hardman

    Hardman Network Guru Member

    I have noticed also with a 2200bg Intel card, a D-Link DWL-g520+ PCI and the Linksys WUSB54g card that "b" network is super stable even with link quality & strengh about 65-75%, there is only minor speed loss with the worse signal...in the meanwhile the "g" network must have signal strengh & quality above 80% or even 90% to keep it stable & prevent the WAG54G from getting stuck with lost data & connection...
    WHAT'S THE WAY TO CHANGE TX POWER in 1.02.9_04 firmware??!!
  3. DavidC

    DavidC Network Guru Member

    I've got a Wag V2 and it has the same wireless options as did my V1.2

    However looking through the page source code for Advanced Wireless Settings there are two settings unused
    CTS Protection Mode and Frame Burst.
    Don't know if they exist for V1.2 or if they may be used in future firmware versions. They must do something - I've seen frame burst referred to but for WRT units not WAG's

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