[App_rpt-users] USB hubs

[Jason Kendall]

The problem with USB Hubs are not the speed at all. It's that hubs are
2.0, and USB Sound cards are 1.1 (Don't believe what the specs say).

Most USB2.0 Hubs only have one translator from 1.1 to 2.0. This is fine
in normal situations because most devices are not real time. Our voice
systems require multiple near-realtime data transfers which all have to
share that one is "Multi-TT". Multi-TT hubs usually (in the ones I've
seen) have 1 translator per port instead of the single shared one.

I personally have used https://www.amazon.ca/gp/product/B00SZ2DPU2 both
at home to support multiple USB Sound Cards for Mixing audio - and
within the past 6 months put this one at VE3LSR with zero issues.

Choosing others, your millage will very, but look for a "Multi-TT" Hub.

Cheers and 73,
VE3YCA


On 4/2/18 9:33 PM, John Rudolph- N2YP wrote:
> Has anyone successfully used a USB hub for multiple nodes? If so what
> model have you used? Do we still need to locate a multi TT hub or do
> the newer usb 3.0 hubs work fine?
> John Rudolph
> Amateur Radio Op N2YP
> Unadilla,NY
>
>
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