At 09:18 pm 20-01-05 -0500, Mick wrote: >MC: In the case cited, grounding of the can is irrelevant. Small AM radios >have a ferrite stick as the antenna, which responds to the magnetic portion >of the EM fields and grounding is not needed. They also have automatic gain >control circuits which try to make local, strong stations and distant weak >stations sound equally loud. Thus if you were in a urban area with nearby >transmitters, your box migt be a effective shield, giving, say 100 x >attentuation of the incoming signal. The radio would just up its internal >gain to make the output equally loud. Yes, the signal gets in through the >gaps between the lid and the box, illustrating my earlier point that you >have to think watertight and airtight when discussing shielding. > >Mike Carrell
That's what I like about Vortex. Every day you learn something new. 8-) Cheers Grimer
