fin aerial help

[jedi-knight83]

the vw head units feed 12v up the aerial coax to power an amplifier in the antenna base.  something to be careful if you move from oem.  as you will see the white plug (fakra) is reserved for this purpose, and the reason why all the vw fin's are nor quite correct for fm except the fix/whip which has both black and white outputs.  some vw fins have the green fakra (tv) 3c0 035 507T and i don't really understand why?

Hmm ok I didnt realise that.

So the twin white plug on the back of the rcd 510 puts out power through the coax wire.. in my case to power the 2 amplifiers in my tailgate.

I might try to pick up the cheapest VW FM only aerial I can find on eBay that has the correct amplifier in the base for a powered output and see if I get a better signal with that hidden in the car. If that works and is a stronger signal, I'll use that and get the FM/DAB one you have and run one in each c pillar as my own diversity system 

[jedi-knight83]

Another thing.... when you run a whip aerial with just 1 white connection then... then I guess your not using a diversity system.. as there is just one aerial. So your headunit must have ant1 and ant2 plugged into the same aerial.

[daveangel]

checked mine today, and i found kiss is boarderline.  its just over 50%, the stereo flag is flashing back and forth and i had to manually tune it.

the best aerials are aways going to be loaded whips, ones powered with a wire runing up the whip.  standard vw basic i think, they have the greatest gain.

i had one cable on the original aerial on the roof, which somehow become two by the time it gets to the radio, probably via a diversity unit.  the diversity unit was probably incorporated into the design when they use screen aerials so the unit has a change to find a good signal and avoid multipath on fm.  with a single aerial on the roof this becomes irrelevant as you only have one source to receive the signal, but if they didnt bother with spliting the aerial cable into two outputs all vw radio's would log fm2 as missing.  so i guess it was cost cutting to provide the roof aerial over the screen aerial, but  then oh balls, we still need the diversity unit otherwise all the radio's will throw a fault.

[jedi-knight83]

checked mine today, and i found kiss is boarderline.  its just over 50%, the stereo flag is flashing back and forth and i had to manually tune it.

the best aerials are aways going to be loaded whips, ones powered with a wire runing up the whip.  standard vw basic i think, they have the greatest gain.

i had one cable on the original aerial on the roof, which somehow become two by the time it gets to the radio, probably via a diversity unit.  the diversity unit was probably incorporated into the design when they use screen aerials so the unit has a change to find a good signal and avoid multipath on fm.  with a single aerial on the roof this becomes irrelevant as you only have one source to receive the signal, but if they didnt bother with spliting the aerial cable into two outputs all vw radio's would log fm2 as missing.  so i guess it was cost cutting to provide the roof aerial over the screen aerial, but  then oh balls, we still need the diversity unit otherwise all the radio's will throw a fault.

Have you got this module under a black plastic cover under your drivers seat?


Thats the diversity module that switches signal for older rcd300-mfd2 era headunits. They had a white and a beige plug on the back of the headunit. The white was for FM and the beige was the signal back to the diversity box telling it if the signal was weak and then the diversity box switched the signal.

With the new era headunits with the twin FM plug, they have that diversity module built inside them and both the plugs on the back are for FM aerial.... I'm guessing with just one roof aerial... your wires merge somewhere so they can both connect to the same source.

[daveangel]

No!  unless its in the seat?  there's nothing in the carpet area!

[jedi-knight83]

No!  unless its in the seat?  there's nothing in the carpet area!

no you slide the drivers seat all the way back and there is a black cover that slides off and this is under it.

If you dont have that then I've no idea why you have 2 fm aerial leads going to your headunit lol..

[alexperkins]

Mine has two aerial feeds and doesn't have the diversity switcher.

Later models have diversity build into the HU therefore not needing the diversity amp under the drivers seat.

Changed around early 2007/late 2006

[daveangel]

http://www.schlauer-shop24.de/

cheapest i found for shark 2

55 euro am/fm/gps
10 euro adaptor
14 euro dhl shipping

 

[keva319]

the vw head units feed 12v up the aerial coax to power an amplifier in the antenna base.  something to be careful if you move from oem.  as you will see the white plug (fakra) is reserved for this purpose, and the reason why all the vw fin's are nor quite correct for fm except the fix/whip which has both black and white outputs.  some vw fins have the green fakra (tv) 3c0 035 507T and i don't really understand why?

I'm just fitting a RCD510 DAB and Blaupunkt aerial to my 2008 GT Sport. Can anyone answer these questions please?

Is it still necessary to run a separate 12V supply if fitting a Blaupunkt DAB aerial or will the power coming down the coax suffice? or

Am I best getting the VW DAB aerial base and mast (this appears not to have a 12V line to it) and just running the DAB coax?

Does the VW fit have amplifiers anywhere else in the aerial lines?

Thanks

I think I've answered my own question. See here:

http://www.mk5golfgti.co.uk/forum/index.php/topic,29826.msg496894.html#msg496894

[apples12]

just a quick question...
how difficult is it to fit the shark fin aerial to a car which has no aerial whatsoever on the roof?

mines a 2005 so i've got the aerials in the rear screen, but my little GPS aerial which is above the lights in the front only picks up 4/9 satellites for some stupid reason!

[timk]

Hi daveangel,

ok i ordered:-

the proper dab aerial has a special whip

1k0 035 849 (it has a thicker screw thread than the standard whip)
000 098 654A Aerial adaptor
000 098 710A Aerial adaptor
1k0 035 501H dab/gps/fm/phone aerial base

and a 5m aerial cable which would have been better 5.5m

I am fitting a DAB antenna to my 4 door 5th gen hatch. Are you saying you recommend getting the 5.5m cable? Or are you saying the 5m cable is closer to 5.5m in length and is too long?

Thanks!