Stopping mobile phone signal interference

owenjt · Post by **owenjt** » Mon Jan 02, 2006 9:14 pm

I've got a VW gamma stereo and no matter if i listen to the radio, tape or cd changer i constantly get a interference noise, like the one you get when a mobile phone is near to the stereo (an intermittent bleeping noise).

Is there anyway to get rid of this? I do put my mobile in the slot underneath the stereo and would like to continue to do so. Surely you can buying something to stop this?

ModifiedMadness · Post by **ModifiedMadness** » Mon Jan 02, 2006 9:26 pm

Not that I'm aware of, only solution I can think of is put it somewhere else, although if my phone is under there, it makes no difference.

Don't know if that's just because I listen to CD's

Mk2Adam · Post by **Mk2Adam** » Mon Jan 02, 2006 9:56 pm

i thought it was something to do with the speakers rather than the stereo, because my pc speakers pick up mobile interferance from passers by....i'm sure some electronic things come with a little circular gizmo which wraps around the wires and helps, don't know of where you get them or if they even do aftermarket ones.

ModifiedMadness · Post by **ModifiedMadness** » Mon Jan 02, 2006 10:27 pm

Well I think it's picked up through the Radio though, because if you turn the radio right down you can still hear it, whereas if you turn the radio off it stops.

warrmr · Post by **warrmr** » Fri Jan 06, 2006 10:20 pm

you could always try putting your stero in a faridays cage. it basicly stops EMI (electro magnetic intererance) altho most radios have it built in ie the metal sheth it comes in and then the radio cage it clips into.

you could always try grounding the radio cage if its not already grounded( connect it to the chassis)

omicron · Post by **omicron** » Sat Jan 07, 2006 4:45 pm

Screened speaker cable.

owenjt · Post by **owenjt** » Mon Jan 09, 2006 2:54 pm

My stereo doesn't have a cage, it just slots into its dash space. I've found interference suppressors but these seem to only stop electrical interference.

bass mekanik · Post by **bass mekanik** » Tue Jan 10, 2006 12:39 am

its not to do with the speakers, or the speaker cable.

Its specifically picked up by the on board amplifier in the head unit. there isnt really any way to stop it without fully sheilding the headunit itself.

its the same in pc speakers or even the speakers in a tv. even those will all have a little amplifier of some kind.

A copper chassis around the head unit would probably help with this and some head units do have a copper chassis as well. however most head units that have a copper chassis tend to be very high end and wouldnt have any internal amplifier anyway

Most full on SQ head units such as the Alpne F1 status units, the Denon Z1, The clarion DRZ-9255, pioneer P9 etc dont have internal amps but these units are all Â£1000+ in price.

warrmr · Post by **warrmr** » Wed Jan 11, 2006 5:20 pm

bass mekanik wrote:its not to do with the speakers, or the speaker cable.

Its specifically picked up by the on board amplifier in the head unit. there isnt really any way to stop it without fully sheilding the headunit itself.

its the same in pc speakers or even the speakers in a tv. even those will all have a little amplifier of some kind.

A copper chassis around the head unit would probably help with this and some head units do have a copper chassis as well. however most head units that have a copper chassis tend to be very high end and wouldnt have any internal amplifier anyway

Most full on SQ head units such as the Alpne F1 status units, the Denon Z1, The clarion DRZ-9255, pioneer P9 etc dont have internal amps but these units are all Â£1000+ in price.

is that not what i said about 3 posts up. exept you put it in a more intellegent form.

bass mekanik · Post by **bass mekanik** » Wed Jan 11, 2006 9:14 pm

warrmr wrote:
bass mekanik wrote:its not to do with the speakers, or the speaker cable.

Its specifically picked up by the on board amplifier in the head unit. there isnt really any way to stop it without fully sheilding the headunit itself.

its the same in pc speakers or even the speakers in a tv. even those will all have a little amplifier of some kind.

A copper chassis around the head unit would probably help with this and some head units do have a copper chassis as well. however most head units that have a copper chassis tend to be very high end and wouldnt have any internal amplifier anyway

Most full on SQ head units such as the Alpne F1 status units, the Denon Z1, The clarion DRZ-9255, pioneer P9 etc dont have internal amps but these units are all Â£1000+ in price.
is that not what i said about 3 posts up. exept you put it in a more intellegent form.

no it isnt- it clarifies that it has nothing to do with the speakers, the cable or the radio and is specific to the on board amplifier.