Wireless Woe's.

[Bod]

Everything tinned, then laid aginst each other, melted together.

Should I have put the capacitor in parallel rather than in series?

 

Bod

[Tony Brooks]

1 minute ago, Bod said:

Everything tinned, then laid aginst each other, melted together.

Should I have put the capacitor in parallel rather than in series?

 

Bod

 

No, it is there to isolate the aerial earth from the 12V DC negative from the radio but allowing the AC interference to earth via the aerial. Is the aerial base making good electrical contact with the roof (if not mag mount or a GRP roof.) Have you tried giving the radio case or the metal mounting cage a separate connection to battery negative.

 

Is it an aerial with an amplifier in the base, if so it may have failed. I have had that with three amplified aerials.

 

Finally when my Sony car radio on the boat started doing what yours seems to be doing It needed a new radio.

[Tracy D'arth]

I bet you have a nasty switched mode power supply, maybe in a wall wart plug in which is causing this interference. Its a well known and increasingly apparent problem nowadays

Try unplugging everything else, moving to another location etc..