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Poor radio reception

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jamescarruthers   
Tue Jul 25 2023, 04:41am

Joined: Jan 19 2014
Member No: #1548
Location: Cambridge
My C6, with the first version of radio, has always had a bit of interference on the radio reception. In the last few months it has became unusable. It might pick up something in the higher frequencies, but low down, it just gets interference, if it can get anything at all.

Am I looking at a radio repair or a replacement antenna box? I think there are two boxes that the antenna goes through before it reaches the head unit. Any experience on this matter, please?

N.B. On the C5, a similar issue is known to be the aerial base, which houses the booster. I presume the C6 does similar stuff to the signal, but through a separate box.

N.B. With the indicator on, I can hear the hissing get much better every time the light comes on! So interference or a lack of suppression is my guess, but how to regain this, I don't know.
jamescarruthers   
Fri Aug 02 2024, 11:59am

Joined: Jan 19 2014
Member No: #1548
Location: Cambridge
To follow up on this I have finally worked out that it is the lights that are causing the interference!

I switched off the DRLs in the on-screen menu and the interference went. It comes back when the DRLs, sidelights, headlights or brake lights are on!

Very strange. Does anyone have any ideas as to what this might be or how I might work out how to fix it.

My first thought is this but it’s a bit of a guess: There a series of earth points on the body which could have a poor corroded connection with age? - Click Here -
C6Dave   
Fri Aug 02 2024, 02:23pm


Joined: Oct 01 2009
Member No: #1
Location: Northumberland
jamescarruthers wrote ...

Very strange. Does anyone have any ideas as to what this might be or how I might work out how to fix it.


Are the DLR's standard incandescent bulbs or upgraded to LED?
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jamescarruthers   
Fri Aug 02 2024, 02:28pm

Joined: Jan 19 2014
Member No: #1548
Location: Cambridge
C6Dave wrote ...

jamescarruthers wrote ...

Very strange. Does anyone have any ideas as to what this might be or how I might work out how to fix it.


Are the DLR's standard incandescent bulbs or upgraded to LED?


They are now LED but I'm sure the radio had poor reception before the incandescents blew. They are now "off" in the settings. However, I will properly take the LED DRL bulbs out and see if that helps.
C6Dave   
Fri Aug 02 2024, 05:23pm


Joined: Oct 01 2009
Member No: #1
Location: Northumberland
jamescarruthers wrote ...


They are now LED but I'm sure the radio had poor reception before the incandescents blew. They are now "off" in the settings. However, I will properly take the LED DRL bulbs out and see if that helps.


I just wondered if they might be incompatible with the CanBus system James. I know some LED require resistors fitting, so it's a place to start if you have the original incandescent bulbs to test the theory.
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Trainman   
Sun Aug 11 2024, 01:10pm


Joined: Apr 12 2010
Member No: #86
Location: Penwortham
I have a air of standard bulbs in the shed if you need them, just let me know
jamescarruthers   
Tue Oct 01 2024, 06:40pm

Joined: Jan 19 2014
Member No: #1548
Location: Cambridge
Things have got better with replacement of the main headlight bulb with proper Osram ones and removal of the LED DRL bulbs. Still a bit of interference but I can actualy hear the stations now. I have been suggested ferrite clips for the power lines to the headlight and LEDs, which I will investigate.

Trainman, I have just sent you a PM about the bulbs, thank you.
 

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