1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. The forum software that supports hummy.tv will be upgraded on Sunday to XenForo 2.0 and so will be unavailable for periods during the day. This is a major upgrade which changes the look and feel of the forum somewhat but brings a host of improvements too. Please bear with us, there will doubtless be further style changes required following this work.

Hissing output when using a RF Modulator

Discussion in 'HDR-FOX T2 Freeview Recorder' started by chris_mackenzie, Dec 8, 2012.

  1. chris_mackenzie

    chris_mackenzie New Member


    I have just bought a Mercury RF Modulator to connect my HDR-FOX T2 pvr to a second TV.

    I've managed to get a picture, which is perhaps slightly grainy there is a background hiss with the sound.

    There is no option to fine tune the second TV.

    I have a brand new scart cable. Made sure everything was nice and tight and the plugs fully inserted.

    If any one can advise, I would be deeply grateful,

    Best ...
  2. Ezra Pound

    Ezra Pound Well-Known Member

    If you can't hear the same hissing (High frequency noise) when you plug the Humax scart connector into a TV, I would say the noise is being generated in the RF modulator. You could try connecting the scart output from another source into the Modulator to see if it also happens with that
  3. Wallace

    Wallace Slightly Pickled

    I have two of these RF Modulators, one connected to my Topfield, the other to my Hummy HDR-T2.

    Whilst the picture quality is not fantastic, I do not hear any hiss on the connected TV (Samsung LCD) when using either modulator. I am lucky, I guess, because the Samsung does allow me to fine tune. Perhaps that is the difference.

    FWIW, neither modulator is connected via the SCART to the Toppy or Hummy, I use the other connectors. The ones that look like phono plugs.
  4. 4291

    4291 Well-Known Member

    I use a 15m A/V cable (RCA/phonos) to connect to my bedroom TV. The Humax complains if the HDMI is connected though on some stations. Good picture quality.
  5. Black Hole

    Black Hole May contain traces of nut

    I have experienced hiss on a SCART connection when there was a poor contact in the lead. Check your connections and try a different lead.

    I have also used these modulators in the past (not currently) and have been satisfied with them. If I remember correctly they also have phono connections so you could switch to phono leads from the Humax to the modulator.
  6. chris_mackenzie

    chris_mackenzie New Member

    Thanks everyone. I was thinking of changing the Scart. I have no other devices in the house which have a Scart connection to test with. I'm goping to see if I have ay phono cables in a drawer
  7. chris_mackenzie

    chris_mackenzie New Member

    I wondered what everyone's preference is a Scart cable or a video and audio cable set ?
  8. grahamlthompson

    grahamlthompson Well-Known Member

    Try turning up the box volume using it's own remote to max and turn down the volume on the remote TV.
  9. chris_mackenzie

    chris_mackenzie New Member

    That fixed it ;O) Thanks very, very much. There is still a slight hiss but it's perfectly acceptable.
  10. Black Hole

    Black Hole May contain traces of nut

    Of course, there is that! I have my Humax volume on 18 as it then matches the native volume of the TV, but as a general rule send signals up wires at max strength.
  11. Ezra Pound

    Ezra Pound Well-Known Member

    It depends what video formats the Modulator will accept via the scart connector, Scart can transport composite video (the same as the single yellow phono connector) and it can also transport other standards that are better quality e.g. RGB and S-Video. If the scart and the phono are transporting composite video there is no real difference
  12. grahamlthompson

    grahamlthompson Well-Known Member

    Modulators only work with composite video in my experience. It wouldn't be hard to combine luminance and chrominance externally from s-video to get back to composite. Doubtfull you will gain anything on quality. Other than this the choice is largely down to convenience. If for instance (as I do) you want to use a multizone AV amp with the output to use a single modulator for several different inputs then RCA phonos are easiest and the most compact output to use (modulator is on zone 2 output) . Leaving aside how insecure scart connectors are :). In my case the modulator for one box is 10m from the box so a phono connection is the obvious choice.