[RFI] RFI quiet USB 3.0 hub

Roger (K8RI) k8ri at rogerhalstead.com
Sun Feb 2 02:54:55 EST 2014

On 2/1/2014 10:00 PM, Jeff Blaine wrote:
> Any experience on USB 3.0 hubs?
> I realize asking about the “RFI” from a USB device (considering it’s essentially a digital amp with tons of harmonics and a lot of handy antennas plugged into it) is a bit of a stretch.  But thought I would ask anyway...

I run 4 Major computers with PCI cards giving additional USB capability. 
Two are in the den with one connected directly to the rig.
A similar configuration is in the shop.  The computer are about 2 feet 
apart and 4 feet from the rigs.  The USB is not yet hooked to the rigs 
in the shop at present, but it was for some time.

The computers are on a gigabit, CAT6 LAN which also has dual band 
wireless capability that links to smart phone and tablets.
   There has been no RFI from this setup 160 through 6 meters on either 
station which is setup for SO2R.  No RFI suppression has been required

There is a 5th computer, but it's quite a bit farther from the rigs 
although it is on the same network.

73 and good luck,

Roger  (K8RI)

> 73/jeff/ac0c
> www.ac0c.com
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