Compatibility of 2.4Ghz Router with 2.4Ghz CCTV

Discussion in 'Home Networking' started by Howard Neil, Mar 31, 2006.

  1. Howard Neil

    Howard Neil Guest

    I currently have a wireless CCTV system (Deccavision) which uses the
    2.4GHz frequency. This system allows for 4 cameras (although I only use 2).

    My telephone exchange is due to be Broadband enabled in June this year
    and I have been considering a router for my 2 PCs (currently networked
    with wire).

    I would rather like to buy a wireless router but I note that they also
    use the 2.4GHz frequency. From this, I have two questions, please:-

    1) What are the chances of either system interfering with the other?

    2) Is it possible to combine the two systems so that, for instance, the
    CCTV signal passes through the router. My reason for asking this is that
    my two cameras are not in the same direction as viewed from the
    receiving aerial. That aerial is directional and I have to accept a
    reduced quality of signal in order to receive a picture from both
    cameras. The routers I have seen have omnidirectional aerials which
    would be an advantage in my situation.
    Howard Neil, Mar 31, 2006
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  2. Fairly high, but the chances of it making either system unusable are
    slim. Simply choose the channel on the router which, when in use,
    causes the CCTV system to exhibit the least amount of interference. I
    use an 802.11g router and a 2.4GHz cordless 'phone with no problems.

    Your other option is to purchase (more expensive) 802.11a equipment.
    This operates in the 5GHz band, thus fixing any interference issues.
    Gareth Halfacree, Apr 5, 2006
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  3. Howard Neil

    Howard Neil Guest

    Thanks for the reply, Gareth.

    Since the answer to question 2 is "no", I may be better off using a
    wired system, then, and remove the risk of interference. Both computers
    are, after all, already networked (using ICS). I presume I would just
    remove the wire from the LAN port of one computer and plug it into the
    router, adding a second wire from that computer to the router? This also
    sounds cheaper.
    Howard Neil, Apr 5, 2006
  4. Howard Neil wrote in
    I'd recommend always using Ethernet rather than wireless if you have the
    choice: if the PCs are fixed in one place and running cables to them is
    feasible. Even with a good signal, I've had dropouts with wireless from time
    to time.

    Strictly speaking, the Ethernet cables from PC to router should be patch
    cables rather than the crossover cable that you'll have between the PCs at
    present for ICS. However most (all?) routers these days have auto-sensing
    inputs so they will work equally well with either patch or crossover cables.
    Martin Underwood, Apr 5, 2006
  5. Howard Neil

    Howard Neil Guest

    Thanks for confirming that. The PCs are definitely fixed and I have them
    connected at the moment so it will be no hardship to continue down that
    Thanks for that tip. I will check that the one I buy has auto-sensing.
    It will just save me a little money and effort if I don't have to
    replace that particular cable.
    Howard Neil, Apr 5, 2006
  6. Howard Neil

    Dave J. Guest

    Not all, but the ones that don't usually have one particular feed socket
    that is switchable between the two wiring setups.

    I've never understood (perhaps someone will explain the flaw in my
    reasoning) why they didn't just use *one* system of connections to the
    sockets and define *all* cables as crossovers. It'd fix this silly problem
    once and for all and do away with the internal complexity of auto-sensing.

    Can anyone here see the reason (assuming there was one) for starting out
    with two different socket plans? Maybe the designer had a friend in the
    cable industry? :)

    Dave J.
    Dave J., Apr 6, 2006
  7. Howard Neil

    Alex Fraser Guest

    Are you sure your telephone is 2.4GHz? DECT telephones use 1.88-1.9GHz.

    Alex Fraser, Apr 6, 2006
  8. Fairly sure - at least, that's what the manual says. As far as I'm
    aware, W-DECT is the 2.4GHz standard, with DECT being 1.88-1.9GHz.

    It's a Doro combined 'phone and answering machine, bought on the cheap
    from eBuyer; as a result, I wouldn't be terribly surprised if the manual
    was lying to me with regards to the frequencies used.
    Gareth Halfacree, Apr 7, 2006
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