Press rear windscreen heating spoils radio reception

[jayzee]

Check the connections to the rear screen element. If they are in any way corroded you will get a high resistance on the circuit, and noise as a result.

Just a thought.

[notorious]

Thanks Ian and Thanks Jayzee.

I hope others will share with me their "heating" experience while redio is on

[Condor]

My D2 FL S8 has done that for years, well ever since I've owned it. I switch the radio off if I need to use the rear screen heater. It doesn't interfere with anything else - CDs etc. Never need the rear screen heater on long so it doesn't really bother me.

[notorious]

Thanks Condor,

I'm not alone

[B@fink]

mine is fine, radio isn't bothered by HRW operation at all so i suspect hissing is not normal....... My ariel is wing mounted as i'm a 97/98 model and that's with the mast at half height (won't go higher, stone pinged off it and dented a section stopping full extention) which has always given perfect reception

[Mr K]

mine seems OK?

This might help:

http://www.audi-sport.net/vb/satelli...n-options.html

The first bit says how to check your antenna's working ok.

might be worth seeing if it changes when the rear windows turned on and off.

[notorious]

Thanks Mr K,

I'll try that. Though I upgraded to RNS-E recently I'll pop my RNS-D back and will play with menus. ...not completely sure though what all those numbers mean But we'll see

Searched other forums. People with the same problem say that changing rear window (!) cured the problem.

http://audiforums.com/forum/showthread.php?t=88595
http://www.audi-sport.net/vb/new-a3-...reception.html
http://forum.e46fanatics.com/showthread.php?t=46705
http://forums.mercedesclub.org.uk/ar...p/t-14790.html

I don't really understand as to why it's the window itself -- when demister if off the FM reception is great. I remember I've checked my rear window when it was cold and all heating "threads" were actually working, so there's no apparent visible damage.

Any more thoughts?


P.S.

I wonder why car industry integrate aerials to windscreen -- because it's cheaper or because reception is better vs traditional rod aerial?

Frankly, I don't want to change rear windscreen if it actually causes the problem. I have car with rod type of aerial on the rear fender and it has that little box (amplifier?) under the aerial and it has unused "Radio" socket:



I'm thinking to connect that socket directly with radio unit, bypassing the windscreen system, but not sure about reception quality. Could anyone comment about that "amplifier" and technical feasibility of such "upgrade"?

Anyway, there are 3 sockets on the little box:

1. Funk, GSM 900-1800, connected with another "signal amplifier" and then with GSM module.
2. RC, 433Mhz. Have no idea what it is.
3. FM Radio and +12 DC.

At the moment only socket number one is actually used in my car.

Could anyone explain please what's is the socket number 2 -- "RC 433Mhz" ? Remote Control I suspect...

Questions, Questions, Questions...