Red Bull can as radio interference shield proven a hoax
Posted June 26th, 2008 by GenghisPhlipThe above photo made it’s way around the internet yesterday and suggests that one can turn an empty Red Bull (or any other soft drink) can and adapt it to create a radio interference shield for your iPhone. Many who were tired of the constant buzzing generated by poorly shield PC speakers and RF bleed from their iPhone sang the praises of such a simple solution.
I had considered posting the photo here along with some instructions (that were lacking from other site posts) but decided that I had better test it first. After many tests with different PCs and speaker setups and using different cans for different guages of aluminum I found that this suggested solution is entirely a hoax. The cans made no difference what-so-ever in the amount of RF static that was picked up by the speakers.
It was also suggested that the use of ferrite beads (commonly found at one end of a USB) cable would provide adaquite shielding when installed on the offending speaker’s cable. I found that this also did not provide the promised solution.
So. The soda can? Complete hoax.
The ferrite beads? Do not work either.
The solution? Buy PC speakers that are properly shielded in the first place.






[...] out this is bullshit — I believe it’s a fake at [...]
Yeah. I think they proved the hoax pretty well in the video.