Is there a way to get WiFi NOISE levels for a mobile device?

Discussion in 'Wireless Internet' started by Paul B. Andersen, Jul 1, 2015.

  1. Yes. Fundamentally, I would never use a home broadband router
    as an additional access point to gain coverage unless I had
    nothing better to do with the router (otherwise, for the same
    money, I'd use a far more powerful device designed for power).

    Given that my old Linksys WRT54G was gathering dust in the
    attic, Jeff had walked me through connecting it as a wired
    access point to my newer home broadband router.

    Since my WRT54G, by itself, without a firmware change to
    a different operating system, was incapable of acting as
    a wireless repeater, the way I set it up was, fundamentally:
    1. I ran a wire from the main router to this "access point"
    1. This access point has the same SSID as the "main" router
    2. A different non-overlapping channel was chosen

    In this way, as Jeff noted, the WRT54G access point receives
    on its Ethernet card in its Internet port, and then broadcasts
    on its WiFi card to the mobile devices in my wife's study
    (and to the kid's gaming consoles).

    Then, from the wife's devices (and the gaming consoles), the
    WRT54G access point receives on its WiFi card, and sends the
    packets through its Ethernet port back to the home broadband
    router.

    As Jeff explained, that's more efficient than if I had loaded
    a different set of firmware which would allow the Linksys
    WRT54G to act as a wireless repeater, because a wireless
    repeater has to do all that above with the same wireless
    card, giving the Ethernet card a sabbatical, where it does
    absolutely nothing.
     
    Paul B. Andersen, Jul 5, 2015
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  2. Yes. The wired access point has the same SSID but a different WiFi channel
    than the primary home broadband router.
    Correct (AFAIK).
    Thanks. I hadn't realized the terminology used, and, in fact, I
    was thinking (erroneously) that a WiFi repeater was different than a
    WiFi extender. I have been corrected and I appreciate that.

    What I have set up in my house, is the spare Linksys WRT54G router
    is set up not as a repeater/extender (which would not require wires),
    but as an additional access point (which, in my case, required
    running cat5 cable a hundred feet or so under the house).
     
    Paul B. Andersen, Jul 5, 2015
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  3. Paul B. Andersen

    Char Jackson Guest

    I recently pulled a WRT54GL off the shelf to use as an AP because I needed
    coverage in the living room. High power isn't required for that.
    I agree with all of that. Just to clarify, when you say you ran a cable from
    your wireless router to the new AP, you connected them LAN port to LAN port,
    leaving the WAN port on the AP unused. Using the WAN port creates a second
    subnet, which usually isn't desirable.
     
    Char Jackson, Jul 6, 2015
  4. I fully agree with you that, if you *already* have the router,
    and, if you don't need power, then by all means, a router
    makes a great wired access point.

    The *wire* is what gets you the distance. For example, mine
    is something like 100 feet long (roughly). So that wire
    is what gives me the distance I need, not the router.
    That's a GREAT point, which Jeff had walked me through years ago,
    but which I had forgotten to mention (thanks for catching that).

    In fact, it's so unintuitive to NOT use the WAN port on the
    Linksys WRT54G acting as a wired access point that I had to
    put a piece of TAPE over the WAN port so that nobody plugged
    anything into that port accidentally, especially when moving
    the router around (which happens, from time to time).

    You are as astute as Jeff is, so I thank you for catching
    that omission on my part.

    Still - having said all that, if I needed to go from a
    few hundred feet to a few miles, on WiFi, and, if I did *not*
    have a spare router lying around, I would simply go out & buy a
    $75 radio instead of a $75 router, as the right radio and
    antenna will have ten times the EIRP as will the typical home
    broadband router for the same price.
     
    Paul B. Andersen, Jul 6, 2015
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