Human Electrical Interference

  morddwyd 19:38 PM 03 Oct 09

I know it's been postulated and theorised many times, but is there any actual scientific data indicating that some humans can, by their very presence, interfere with radio transmission?

The reason I ask is that we used to use a video sender that would never work properly if my wife was near, and today I've had terrible trouble with a wireless remote repeater, which transmits IR wirelessly, which disappeared as soon as she went out.

She doesn't carry any sort of electrical gear.

Sounds far fetched I know, but I can only tell it as I saw it!

  DieSse 20:57 PM 03 Oct 09

I get all sorts of interference when my wife is near.


Hope she doesn't read this!

  Forum Editor 11:45 AM 04 Oct 09

has frequency. The electrical frequency of the human body is between 62 to 68 Hz during daylight hours, but this changes when we're ill. The degree of change depends on the type and severity of the illness.

There's been a good deal of research into the subject, and a fair amount of disagreement amongst scientists, but it's an accepted fact that a human body can indeed affect some devices. Grab hold of one end of a radio aerial, for instance, and you'll see how your body alters the signal strength - you'll act as an extension of the antenna.

  BT 16:43 PM 04 Oct 09

The stairlift man told my sister that the excess static from her blew up the circuit board in the backrest of her stairlift, and fitted a shield to prevent it happening again.

  oresome 18:37 PM 04 Oct 09

Certainly not. Although circuit boards that are in situ and connected usually have sufficient discharge paths to avoid being damaged.

A seat back is an extreme example of a situation where materials are likely to rub together and create static.

  morddwyd 20:20 PM 04 Oct 09

Regularly used to crash my computer at work when a static flash jumped from my finger to the keyboard and down between the keys.

Material used in the carpets I suppose; the IT department said that sometimes the damage was worse than just a crash.

  Stuartli 21:21 PM 04 Oct 09

Many people experience a static electricity shock if they touch a car's bodywork.

  Quickbeam 15:45 PM 02 Nov 09

"static electricity shock if they touch a car's bodywork."
I used to have a Citroen BX which had a lot of plastic body panels on it, everytime I closed the door,it arced enough charge to weld two ships plates together... I sold it when I became too paranoid about closing the door and getting my electric shock!

  morddwyd 17:29 PM 02 Nov 09

Just for future reference, the secret is to grasp the sill, or doorpost or similar as you get out.

That way the static is discharged to earth as it builds, and there is no sudden shock.


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