[TangerineSDR] In pursuit of low noise: fiber USB cables?

[Tom McDermott]

Hi John - some things to consider about the USB extender cable:

1. How will the RX888 be powered when using this cable?
2. In the one review - the extender was being used to bring back data from
an HDMI switch to a computer.
HDMI switches are usually powered from the HDMI cables or via a local DC
input, thus not needing power from the USB port.
3. I'm guessing much of the hash is due to the DC USB power from the
computer radiating as RFI on the cable
when the shield is making poor or no contact.

-- Tom, N5EG


On Tue, Feb 27, 2024 at 8:26 AM John Ackermann N8UR via TangerineSDR <
tangerinesdr at lists.tapr.org> wrote:

> I had the idea last night that we could put an RX888 and GPSDO at the
> base of our active antenna and run an optical USB3 cable back to the
> host computer. That would move the radio far away from all the computers
> and other noise in the shack. The only copper connection would be for
> power, and we could filter the hell out of that.
>
> Something like this:
>
> https://www.amazon.com/Elecan-Extension-Extender-Transfer-Keyboard/dp/B0BNGW5225/ref=asc_df_B0BNGW5225
>
> might do the trick. (Note -- I don't know if 5gbps is sufficient for the
> RX888, but if not there are 10 and 10 gb cables available for more money.)
>
> A challenge is powering the transceiver at the far end, but that
> shouldn't be too hard to do.
>
> Has anyone considered this?
>
> 73,
> John
>
> --
> TangerineSDR mailing list
> TangerineSDR at lists.tapr.org
> http://lists.tapr.org/mailman/listinfo/tangerinesdr_lists.tapr.org
>
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