In your home and outside you're correct.
However in a car the total car works as a sort of antenna.
The signal in all wave bands are transferred to your radio.
However, the car also has many, many electrical devices and other "things"
that desturbe the signal as well (fan working or not, wheel truning or not,
rear window heating, breaking lights, ABS etc etc)
That's where the FM/AM difference comes in.
The FM signal is not interferred by these "car noises" and the AM is.
So only with a complete electrically isolated radio and antenna wire are
important for good AM reception, specially when driving (good earth for all
components is VERY important, the radio is often forgotten to put the earth
strip in; connecting the "-" is not enough)
--
Ciao from Holland
AlfistaGJ (Gert-Jan)
Now:
Rosso Radicofani GT 2.0JTS (2005)
Golden Montreal 1428700 (1973/4)
And former owner of:
156SW / 2 155's / 75 / Giulietta / 2 33's /
3 Sud's / Alfetta GT / Montreal / 2000GTV /
1300GTJ / 2 Giulia Super's

"Catman" > schreef in bericht
...
> GT wrote:
>
>> You can pick up FM without the aerial plugged in?
>> FM is harder to pick up than MW!
>>
> Yes, normally you can get AM without an external antenna, but not FM
> --
> Catman MIB#14 SKoGA#6 TEAR#4 BOTAFOF#38 Apostle#21 COSOC#3
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