Signal too weak – but it's almost 100%

Forum Forums Freeview HD FVP 4000T, 5000T Signal too weak – but it's almost 100%

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  • #17366
    Anonymous
    Inactive

    Hey,

    Loving this PVR – when I was using the youview box I had an attenuator attached bringing the signal down from 100% to around 65% (on the advice of Youview as some channels had disappeared). I am getting occasional messages on screen saying the channel signal is too week then the picture appears, this is mainly the HD channels (particularly the ones on COM 7). I have tried popping the attenuator back in situ with not much luck. Signal strength is around 98-100% with similar for the quality.

    Any advice?

    Rick.

    #66433
    grahamlthompson
    Participant

    Com 7 and Com 8 are transmitted using lower power than the other Mux.

    Can you first check that you aren’t receiving from multiple transmitters (Channels over 800 in the epg).

    Next get an estimate as to your local reception conditions. Use your postcode here, and select detailed view.

    http://www.digitaluk.co.uk/coveragechecker/

    #66434
    Anonymous
    Inactive

    No channels over 800 being received and it appears that I am potentially receiving signals from multiple transmitters (I can inbox you the direct link if that helps?)

    Rick.

    #66435
    grahamlthompson
    Participant

    ricke17 – 41 seconds ago  » 

    No channels over 800 being received and it appears that I am potentially receiving signals from multiple transmitters (I can inbox you the direct link if that helps?)

    Rick.

    Channels over 800 means you are receiving multiple transmitters. When an auto scan finds duplicates it stores them at 800 up. This is clearly not an issue.

    A screengrab from the DTG reception site would be of interest.

    #66436
    Anonymous
    Inactive

    Hmmm, odd – screen shots attached.

    #66437
    Anonymous
    Inactive

    It won’t let me submit them – have uploaded them here:

    Image 1

    #66438
    Anonymous
    Inactive

    Screen_Shot_2015_11_23_at_12_49_25.png

    #66439
    grahamlthompson
    Participant

    You must be using Oxford (only one with Com 7). If you look at the colours the MUX in green shows good reception, com 7 and Com 8 are much weaker. Did you actually tune to a COM 7 channel (107 for instance) before checking signal strength and quality ?

    If you open manual tune, enter channel 31 and select DVB-T2 you should see the real reception figures.

    A remotely powered masthead amp installed as close to the aerial as possible (in the loft will do) or a higher gain aerial might resolve the issue.

    #66440
    Anonymous
    Inactive

    Tuning into Ch 107 and bringing up the signal test gives me tuner 1 with 100% strength and 100% quality.

    Doing as you said and searching using your method brings up zero channels and strength and quality at 0%. This is the screen before I do the manual search:

    image

    I live in flats with a shared aerial, so your suggestion re. a remotely powered masthead amp isn’t possible. How can the signal strength and quality both be 100% (such as on ch 107) yet cause intermittent problems? It’s confusing! Incidentally I have none of these problems when I watch freeview on my smart tv.

    #66441
    Barry
    Moderator

    To clarify, what channel number is displayed on the signal test page when viewing 107

    Home

    Settings

    Channel Settings

    Signal Test.

    #66442
    grahamlthompson
    Participant

    ricke17 – 2 hours ago  » 

    Tuning into Ch 107 and bringing up the signal test gives me tuner 1 with 100% strength and 100% quality.

    Doing as you said and searching using your method brings up zero channels and strength and quality at 0%. This is the screen before I do the manual search:

    image

    I live in flats with a shared aerial, so your suggestion re. a remotely powered masthead amp isn’t possible. How can the signal strength and quality both be 100% (such as on ch 107) yet cause intermittent problems? It’s confusing! Incidentally I have none

    of these problems when I watch freeview on my smart tv.

    As Barry indicates you may not be getting COM 7 from Oxford, though from your DTG screen shot it hard to know where else.

    Did you remember to change to DVB-T2 (not DVB-T) ?

    #66443
    Anonymous
    Inactive

    CH32 is displayed – so I have done the manual search with ch32 and the strength is 98% and the quality is 100%.

    #66444
    grahamlthompson
    Participant

    ricke17 – 5 minutes ago  » 

    CH32 is displayed – so I have done the manual search with ch32 and the strength is 98% and the quality is 100%.

    How weird perhaps UKfree TV has the incorrect info

    https://ukfree.tv/transmitters/tv/Oxford

    What channel does it say on the DTG page, it’s too low res to read properly on your image ?

    #66445
    Anonymous
    Inactive

    It’s all confusing. Still non the wiser. How come my smart tv is ok but the humax is like this?

    #66446
    grahamlthompson
    Participant

    ricke17 – 6 minutes ago  » 

    It’s all confusing. Still non the wiser. How come my smart tv is ok but the humax is like this?

    I am guessing there is an issue with the communal install and that the signal is just too high for the box sensitive tuners. Can you tell us what channel the DTG site says COM 7 uses on Oxford. If it really is 31, the communal system is doing something very peculiar.

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