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Will i die

Discussion in 'Tomato Firmware' started by Router_Newbie09, Jun 25, 2009.

  1. Router_Newbie09

    Router_Newbie09 Addicted to LI Member

    Hey, I was wondering whether cranking up the Tx power to around 150mW will have any heath issues associated with it?

    I've tried it at around 160mW for about 10mins and noticed quite a large difference: 3% noise went up to 80% noise; Laptop and PS3 signal's rocketed up!!

    I've tried 82mW but only notice a diff above 100.

    Now will this affect anybody's health in the house, and especially if somebody is sleeping within 5m of it?

    Help appreciated:thumbup:
     
  2. The Doctor

    The Doctor LI Guru Member

    If you ran it at that power level with the antenna up your ass it would probably be a long term health hazard, plus a bit uncomfortable :biggrin: Seriously, at 5m I wouldn't worry about health effects. 3% noise going up to 80% is not good. A better signal is what you want, not just bigger. If the power increase makes the connection faster/more stable, keep it. If not, lower it a little.


    Ed
     
  3. Router_Newbie09

    Router_Newbie09 Addicted to LI Member

    Thanks Doc, haha yeah that sounds nassty; especially with HGA7T antennas

    so around 150mW should be fine?

    I assume the Router (WRT54GL) should hold up as well?

    About the noise, would you care to explain a little? wouldn't more noise mean the signal could travel further?

    Sorry;:redface:
     
  4. Router_Newbie09

    Router_Newbie09 Addicted to LI Member

    also somebody sleeps about 1.5m from it, not 5m as I said before
     
  5. The Doctor

    The Doctor LI Guru Member

    1.5m will give more exposure than 5, that's for sure, but it wouldn't worry me personally. I had a router running 100mw at the foot of my bed for years. RF radiation exposure and it's health effects are controversial, some would say 150mw 5 houses down is dangerous others say no problem. RF is not ionizing radiation like x-ray or gamma, not likely a risk of DNA damage. OTOH, some folks think the 5mw leakage allowed from a microwave (same frequency) is WAY to high. You must make the decision yourself.

    Signal is the RF you are using to send your data. Noise is just that, random noise in the same frequency you are using for the signal. Signal to noise (S/N) ratio is the difference in strength between the 2. Higher s/n IS good, higher noise is not. The amplifier in your router will put out a cleaner signal at lower power levels, but there are other sources of noise present (portable phones, baby monitors, microwaves, etc.). More power from the transmitter will help override the other noise at the receiver end and give a better (higher s/n), but at some point the transmitter will distort so bad it's outputting almost pure noise, which gives a very poor s/n. So, best results are a power setting that gives the highest s/n at the receiver, which would be lower in a quiet setting and higher in a noisy one. I don't believe 150mw is too high from what I've read, but lower could possibly be better for you.

    Please note that the signal strength and noise figures reported by wireless networking equipment may not be particularly accurate, and the numbers may not be proportional to the actual change, but higher indicated s/n (maybe displayed as quality in %) is likely to better.


    Ed
     
  6. szfong

    szfong Network Guru Member

    I'd be more worried about that microwave oven or that cell phone you put next to your brain.

    Interestingly, many years ago, I saw on TV an investigative report about a cop developing brain tumors on his right side from having a a radar gun mounted at that very spot in his squad car. Another cop found it convenient putting that same radar gun between his legs. Well, you get the "testicular" picture.. :) Well, fortunately they've redesigned those radar guns nowdays...
     
  7. Router_Newbie09

    Router_Newbie09 Addicted to LI Member

    Thanks for the help Doc, appreciated.

    thank szfong.

    Yeah I'll try it out, I'll test to see which mW level gives the best Signal with lowest noise;

    And I guess I'll just have to hope that person sleeping next to it doesn't turn into a Zombie:dance:
     
  8. Toastman

    Toastman Super Moderator Staff Member Member

    Not only does the router run a ridiculously low power level, it is only transmitting for a small fraction of the time. You might have trouble if you sit next to a router for a thousand years or so. My guess is that you'd probably die...
     

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