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"Because the signal flows through you.
Sounds like you have a ground problem with your mp3 player or at your ground loop of your antenna."
That's the obvious answer, or at least the first thing that comes to mind but it doesn't fully explain what's going on when you touch an antenna. I get the same effect when I touch an insulated length of 300 or 75 ohm wire being used as an antenna. It's just a thin sheath of plastic so it doesn't block the electromagnetic waves in the air but it would insulate your body from direct electrical contact with the wire.
Also, and I think more importantly, WHY does your body act as such a better antenna? And how can you replicate that effect? IF your body is such an awesome antenna then why hasn't the industry just started making them all to mimic human bodies? Is it just because your body is mostly water? So then would taping your antenna to the side of a metal jug of water help so you don't have to stand there holding it yourself all day?
As you have noticed, you don't always have to hold it. Sometimes, just by getting close, you will see the same result. This phenomenon happens because of electromagnetic field around our body originating from heart and brain activities.
What else can I help you with?
What is wrong with the radio reception on a 2007 Camry Radio?
Bad antenna? Radio needs to be trimmed Bad antenna? Radio needs to be trimmed
Why does the rav4 have an antenna?
The Rav4 has an antenna for the same reason that most vehicles have an external antenna, to optimize radio wave reception.
What is an aerial on a car?
Aerial is another name for the antenna that is used for reception of the radio.
Why does my radio antenna only work when I touch it?
The radio antenna may only work when you touch it because your body is acting as a conductor, improving the antenna's reception by grounding it and reducing interference.
What to do about my poor radio reception when the antenna does come up?
They sell amplifiers to boost the signal ;)
What can be wrong with my radio if it no longer has reception but the CD player works?
The antenna is probably not connected
What is a signal reception?
This usually refers to radio sgnals and often concerns the antenna but could also concern the type of radio aparatus.
Can the AM antenna tuner be adjusted without pulling the radio?
If you want to get your favorite stations programmed in the numbered buttons on the radio, just manually tune the station then push and hold the desired button in until the sound comes back on. This adjustment is lost every time you pull the radio or disconnect the battery. If you want to improve AM reception with the stock antenna and radio, there are no user-adjustable controls.
Where is the radio antenna located on a 2000 Lincoln Navigator I have no reception but all other features work?
the antenna is in the right rear side glass.
Poor radio reception after new windscreen fitted?
Your antenna was likely damaged or removed when the wind screen was replaced.
Do you need an antenna on your car?
Some are buiklt into the windshield front or rear or side window--needed for radio reception
How can you strengthen a signal on a Motorola ht1250 portable radio?
Improve the antenna.
