Ethernet RF filters

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savvypaul
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Ethernet RF filters

Unread post by savvypaul »

Inspired by CN's reports of the ENO filter, I started looking at what other filters might be available.

So far, I only found this one: https://www.hamradio.co.uk/accessories- ... -10944.php

Anyone else using an ethernet filter?
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Re: Ethernet RF filters

Unread post by antonio66 »

I came across one the other day, unfortunately I cannot remember where. Give me time and I'll look again, it was a little more expensive than the one in your link.

I'm a genius, found it straight away. :geek:
https://jcat.eu/product/net-isolator-gi ... -isolator/

I think Jcat are effective products, I'm sure my brother has one of these in his server. :grin:
https://jcat.eu/product/net-card-femto- ... k-adapter/

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Re: Ethernet RF filters

Unread post by Lindsayt »

£190+ is a complete joke for a copper ethernet RF filter.

When you can not have the problem in the first place by converting to fibre for similar money - depending on the type of device you are streaming through...

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Re: Ethernet RF filters

Unread post by savvypaul »

Lindsayt wrote: Thu Mar 04, 2021 9:10 am £190+ is a complete joke for a copper ethernet RF filter.

When you can not have the problem in the first place by converting to fibre for similar money - depending on the type of device you are streaming through...
I'm very interested in the fibre option. How can I tell if a streamer is suitable for use with a fibre network?
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Re: Ethernet RF filters

Unread post by TheMarlin »

savvypaul wrote: Wed Mar 03, 2021 12:04 am Inspired by CN's reports of the ENO filter, I started looking at what other filters might be available.

So far, I only found this one: https://www.hamradio.co.uk/accessories- ... -10944.php

Anyone else using an ethernet filter?
Have you tried one?
Wonder if it would do much with my Bluesounds Node 2i.

I have a mesh wifi system, and my Node 2i directly cables into one of the extender disks (works very well).

Main router is at the other end of the house.
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Re: Ethernet RF filters

Unread post by savvypaul »

TheMarlin wrote: Thu Mar 04, 2021 1:22 pm
savvypaul wrote: Wed Mar 03, 2021 12:04 am Inspired by CN's reports of the ENO filter, I started looking at what other filters might be available.

So far, I only found this one: https://www.hamradio.co.uk/accessories- ... -10944.php

Anyone else using an ethernet filter?
Have you tried one?
Wonder if it would do much with my Bluesounds Node 2i.

I have a mesh wifi system, and my Node 2i directly cables into one of the extender disks (works very well).

Main router is at the other end of the house.
Not as yet.

I was thinking of wrapping my ethernet cable around a large ferrite core, lol!

I'm tempted to get something on approval.
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Re: Ethernet RF filters

Unread post by Lindsayt »

savvypaul wrote: Thu Mar 04, 2021 10:43 am
Lindsayt wrote: Thu Mar 04, 2021 9:10 am £190+ is a complete joke for a copper ethernet RF filter.

When you can not have the problem in the first place by converting to fibre for similar money - depending on the type of device you are streaming through...
I'm very interested in the fibre option. How can I tell if a streamer is suitable for use with a fibre network?
If your streamer is a Windows or Linux based device with a spare PCIE slot you could get a card like this:

https://www.ebay.co.uk/itm/10Gtek-10GbE ... Sw1ylgICgc

plus a pair of matching SFP or SFP+ modules plus a length of fibre optic cable to match the SFP modules.
Older switches tend to only take SFP. Newer switches take SFP+ as well as SFP. IE don't buy SFP+ modules if your switch is SFP.

There are cheaper SFP NIC's you can buy from eBay, but the ones I've checked were Windows Server based, and you'd be taking a chance for other operating systems.

Edit: This card is cheaper and appears to be compatible with 64 bit Windows 7, 8 and 10 and Linux
https://www.ebay.co.uk/itm/Full-High-Me ... SwdNpgH62L

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Re: Ethernet RF filters

Unread post by Neonknight »

Awhile back there was discussion of USB isolation by using a device like an USB extender over ethrrnet. PS Audio came out with a product called a LANRover which supposedly worked well, but some folks thought it was a rebadged version of a commercial USB extender from Starlink, this model # to be exact USB2G4LEXT2NA. Here is one thread that I could find referencing it:

https://www.audiocircle.com/index.php?topic=143142.0

There were other posts somewhere regarding this, such as on Steve Hoffmans board, or perhaps Head Hifi? But I couldnt find anymore info this evening, but its out there somewhere.

I did have a LANRover at one time in the system, and it did work well. But as I understand it the software was not compatible with WIN 10, so it got discontinued.

Do you suppose there is a correlation on how these ethernet extenders isolate the USB signal and supposedly clean it up? I don't know enough about computer peripherals to know if this is plausible or not. I do know these commercial versions are not cheap, usually in the $300 range. Do you suppose there is a limit on data type it will pass? I believe the LANRover would only work up to DSD64.

I did locate this one which seems to work the same way.

https://www.ebay.com/itm/4-Port-USB-2-0 ... 890.l49292

Any thoughts you would have would be greatly appreciated.

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Re: Ethernet RF filters

Unread post by Fretless »

The LANrover appears to be a USB regen device that also provides galvanic isolation between source and DAC.

There are now a few in circulation that do the same, units from Ifi, Uptone, Schiit and Oehlbach for starters.

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Re: Ethernet RF filters

Unread post by Fretless »

Looking a bit closer. Thr LANrover is a 2-stage device that firstly reformats the data into an ethernet stream for transmission to a reclocker which then returns the signal to USB for input to the DAC.
As ethernet transmissions are better suited to longer cables this means that the source device and audio system can be placed a considerable distance from each other.

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