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Thread: Is this small cell an At&T ?

  1. #1
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    Is this small cell an At&T ?

    The one with the street light not lite up ?
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    Yeah that’s AT&T, Verizon on the left with 5G.


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    Chicago, IL
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    Stand in between and nourish them tumors.

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    Unhappy Too close for comfort

    Quote Originally Posted by gedster314 View Post
    Stand in between and nourish them tumors.
    Yes, I personally don't like the excess of small cells that companies are deploying. All things considered they will transmit high amounts of power continuously because they're communicating with hundreds if not thousands of phones at the same time, all with varying amounts of signal strength.

    When I was in Charlotte, NC one was deployed on a street pole yet there was a balcony less than 1 meter away from it, you could literally reach out and touch it. I doubt that is safe...

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    I would love to be the one with that balcony! The signal must be amazing!

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    Quote Originally Posted by @Class View Post
    All things considered they will transmit high amounts of power continuously because they're communicating with hundreds if not thousands of phones at the same time, all with varying amounts of signal strength.
    Yes, I was surprised how much RF energy is emitted from small cells. I have never seen a signal meter pegged @ -45 dbm with LTE.Name:  Screenshot_20190922-191316.jpg
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    . This is speed test taken at that corner on March 7 at 6pm

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    Quote Originally Posted by Digital Rules View Post
    Yes, I was surprised how much RF energy is emitted from small cells. I have never seen a signal meter pegged @ -45 dbm with LTE.Name:  Screenshot_20190922-191316.jpg
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    At that power level if you were able to put your hand next to it you would be burned.

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    Those aren't cell sites, but shot spotter devices deployed throughout the city. When a gunshot is detected, the local CPD District receives a computer generated notification in the SDC room, who then puts out a notification via Zone radio. The reason for them to be next to each other is due to the larger downtown buildings, echo etc. so they can pinpoint a location more accurately. Crime is ramping up in Downtown and River North areas of Chicago so anyone coming here, be aware.

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    Quote Originally Posted by @Class View Post
    At that power level if you were able to put your hand next to it you would be burned.
    Nonsense. You can easily get to -30 dB (sometimes more) sitting under/next to a WiFi access point at home or work.

    These transmit only ~25-100mW depending on the gain of the antenna at both 2.4GHz (the same as your microwave) and 5.8GHz.

    It’s rare to find 100mW AP’s any more, but even that is only 0.1W, compared to the typical microwave at 1000W aka 10,000x more power.


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    Quote Originally Posted by JSchnee21 View Post
    Nonsense. You can easily get to -30 dB (sometimes more) sitting under/next to a WiFi access point at home or work.

    These transmit only ~25-100mW depending on the gain of the antenna at both 2.4GHz (the same as your microwave) and 5.8GHz.

    It’s rare to find 100mW AP’s any more, but even that is only 0.1W, compared to the typical microwave at 1000W aka 10,000x more power.

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    No this guy is completely wrong. Bases typically transmit in the 10-100W range, plus they communicate with hundreds if not thousands of devices at the same time resulting in continuous transmission without

    https://www.rfcom.ca/primer/bases.shtml
    https://www.fcc.gov/engineering-tech.../rf-safety#Q15

    At a given cell site, the total RF power that could be radiated by the antennas depends on the number of radio channels (transmitters) installed, the power of each transmitter, and the type of antenna. While it is theoretically possible for cell sites to radiate at very high power levels, the maximum power radiated in any direction usually does not exceed 500 watts.

  12. #12
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    It's not a cell site as I mentioned..

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    Quote Originally Posted by werinshades View Post
    It's not a cell site as I mentioned..
    Understood. Just wanted to clarify about the transmit power coming off of a cell.

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    “Medium Range small cells typically transmit at power levels between around 0.25 and 6 watts per transmit connector (i.e. up to 12 W per access point). The equipment size is typically in the range of 5 to 15 litres.”

    https://www.gsma.com/publicpolicy/wp...nt_Booklet.pdf

    Granted this is an older article and seems to be European leading. Not sure what the current FCC limitations are per class of micro/femto cell. Likely varies by band as well.

    Add, power drops by the square of your distance from the transmitter.

    So, I stand corrected, these might be ~10-120x more powerful than the AP you have in your office/bedroom that you sit within a meter or two of for hours at a time.

    Of course that cell phone, next to your brain or gonads, might be putting out up to 1 Watt all on its own. One study I read said small cells actually decrease radiation exposure b/c your handset can transmit at a much lower power then when talking to the Macro.


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