High TX generates noise, heat and all kinds of problems

Discussion in 'General Discussion' started by atpanula, Jan 11, 2006.

  1. atpanula

    atpanula Network Guru Member

    2 random quotes:

    >>...and boost the transmit power to 30 or 32 (anything higher you'll have too much noise for video...

    >>...also try and not to go over 200mW on the wrt54g(s) cause over 200mW the signal gets real dirty and will cause alot of noise...

    I have read several posts suggesting that increasing TX power will generate noise. Some say that 100mW is the limit, others as low as 70 or 30mW. Why?



    >>...I don't crank the power up that high because I've read that there are heat issues... unless you attach some kind of additional heat dissapation. I am running mine at 100% (~87mw) and the unit remains relatively cool...

    I have read that some people have attached additional fans to their equipment. Why?



    >>...Maximum broadcast power for wireless "G" is 168 MW.
    Maximum broadcast power for wireless "B" (slow) is 215 mw...

  2. Couledouce

    Couledouce Network Guru Member

    For max TX power, there is a legal aspect, read the doc that came with your WRT.

    On the practical side, the higher the TX power the more heat the circuits generate. Do they generate too much and risk to damage your WRT? Some say yes, some say they are doing it for years with out problems. A fan would disipate the addition heat effectively...

    As you increase the TX power, you also increase the "noise" or bad signal from the WRT. At some stage increasing the power no longer increases the signal level more than the noise level, so it degrades the communication.

    So you have to find out by a bit of trial and error what is best for your setup.

    Often a better solution is to use better antennas, like listening better instead of shouting louder.
  3. jgutz20

    jgutz20 Network Guru Member

    Nicely done.

    Im using my routers with talisman set to 35mw, 3 routers far edges of the house, im getting Great range in the yard
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