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UPC digital box and phone interference

  • 25-08-2008 7:52pm
    #1
    ct5amr2ig1nfhp
    Closed Accounts Posts: 5,019 ✭✭✭


    I'm not sure where to put this so mods please move my thread if its best suited else where.

    I had UPC broadband and Digital TV installed. Everything was fine until I had the phone service installed. The digital tv started breaking up something awful. I finally figured out that the interference was being caused by the cordless phone I got free from UPC. If I sit the base station anywhere near the digital box the tv signal breaks up.

    I moved the base station for now and haven't had any problems since. But I don't want to leave it where it is.

    I'm just wondering has anyone else noticed this? I see UPC are now offering a new set top box, so I was going to ask them to replace the one I have.


Comments

  • #2
    com7
    Registered Users, Registered Users 2 Posts: 246 ✭✭com7


    get them out to sort it ! never heard of that thought cordless phones work down AROUND 50 mhz digital tv is up around 300 mhz so it should nt cause a problem


  • #3
    Alun
    Registered Users, Registered Users 2 Posts: 21,499 ✭✭✭✭Alun


    com7 wrote: »
    get them out to sort it ! never heard of that thought cordless phones work down AROUND 50 mhz digital tv is up around 300 mhz so it should nt cause a problem

    DECT cordless phones work at 1880–1900 MHz, and I can't imagine a new phone being supplied that wasn't a DECT one.


  • #4
    watty
    Registered Users, Registered Users 2 Posts: 32,417 ✭✭✭✭watty


    The PSU of setbox or Modem can make DECT phone buzz if base is too close. Conversely the phone base PSU or some other component may affect the Digital Cable receiver.

    This sort of problem is common with gadgets.

    Irish/European DECT 1880 MHz–1900 MHz

    Illegal / erroneous imported DECT 1920 MHz–1930 MHz. Intended for USA. Illegal here.

    Old analogue cordless phones are 1.6MHz + 49MHz or 49MHz only. Not legal for sale anymore. Some never were.

    GSM is 900MHz & 1800MHz here and 3G/HSDPA 2100MHz.
    Other non-Europe GSM is 800/850MHz and 1900MHz.


    It has to be something in the base or handset, not the DECT RF signal itself. A new set box might not solve the problem as it may have same issue, or the fault may lie with the DECT phone.


  • #5
    ct5amr2ig1nfhp
    Closed Accounts Posts: 5,019 ✭✭✭ct5amr2ig1nfhp


    Thanks for the replies.

    Its a Siements Gigaset A160 DECT phone. I had the engineer out this morning and he said it was a known issue, and I'd just have to move the base station. Bit of a pain but I guess I'll just have to live with it.

    I wish they'd have just told me that over the phone rather than me having to take a half day off work! Clever UPC.


  • #6
    Solair
    Closed Accounts Posts: 7,230 ✭✭✭Solair


    In general, it's just not a great idea to put a transmitter i.e. a DECT cordless phone or a WiFi router too close to anything that's picking up an RF source i.e. a cable box, sat box, TV or radio.

    Just move the DECT phone to a 'safe distance' and you should be fine.

    It's likely that there's something in the box, that's not sufficiently shielded to cope with a DECT transmitter sitting within a few CM of it.


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