The 7300 doesn't work with a USB isolator as it requires power from the
hub/computer.I've now tested a couple of powered hubs and they work too. So
it's isolating the data lines appears to be the things that works best.
Mike W9MDB
On Sunday, January 26, 2025 at 10:03:57 AM CST, Jari A via wsjt-devel
<[email protected]> wrote:
There are USB-isolators. Galvanic isolator and provides 1500V potential
isolation and USB-2 speed. Gives enough power for external audio cards.It uses
ADUM 3160 chip.
Solve my RF and ground loop problems with computer
Available from ebay, aliexpress, amazon and other sellers.
:Jari / OH2FQV
On Sun, Jan 26, 2025 at 7:17 AM Enrico OE1EQW via wsjt-devel
<[email protected]> wrote:
Maybe this item can help you:
Amazon ASIN B0D3FYJ4MM
73
Enrico OE1EQW
Am 25.01.2025 um 22:19 schrieb Black Michael via wsjt-devel:
In my current setup there is an IC-7300 that has been unable to transmit
even 1W without dropping the USB connection. I have numerous rigs hooked up
and lots of USB connections. The 7300 is well known for being RFI sensitive
dropping CAT and Audio service.
So I bought an optical USB cable, plugged it into a non-powered Startech hub,
then ran a triplite cable to the rig. Now able to run full power without any
problems. I'll be doing more investigation with a cheaper hub and adding more
USB devices to this new hub. But the optical cable has a USB-B on one end and
USB-A on the other. So do need a USB hub that takes a USB-B cable.
Not a cheap solution but effective.
https://www.amazon.com/dp/B01N94D03E
https://www.amazon.com/StarTech-com-Mountable-Rugged-Industrial-Port/dp/B003AVPUZG/ref=sr_1_8?s=electronics&sr=1-8
Mike W9MDB
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