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On 11/26/2014 03:28 PM, Jim Lux wrote:
> The other thing is that the RFI and RFI tolerance environment were
> somewhat different back then. There wasn't the plethora of
> sensitive low power receivers floating around: phones were analog,
> twisted pair (which is pretty good for EMI rejection). TVs,AM/FM
> radios, and Hi-Fi stereo gear had their issues. But that was about
> it.
Not to mention switching power supplies.
Blocking the currents that travel on the outside of your coax,
from getting to your antenna and back into the coax, can save
you from a lot of RFI trouble.
Coax shielding only works if the noise is kept from getting
inside the coax everywhere. Wideband choke baluns help with that.
- --
All rights reversed.
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