On 7/22/2023 4:20 PM, dbmcalpine73@gmail.com wrote:
As the number of USB ports I need increases, so does the size of the USB
hub. As the USB hub increases, so does the RFI. I have snap-on cores on
all cables into the USB hub, but it doesn't seem to matter. Anyone got
suggestions for a good reliable bullet proof USB hub, preferably 8 ports,
Vs. 3.0?
What bands, Dennis? If HF, I recommend 5-turns through 1/2-in or 3/4-in
#31 clamp-ons on every cable associated with the unit, including the
PSU. Also, try to use a unit that runs on a 12V PSU, so that you can run
it from the 12V bus in the shack (which should use a linear PSU).
Also, make sure that the turns in those clamp-ons are in sequence, not
scrambled. There are photos in one of my RFI tutorials.
73, Jim K9YC
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