[time-nuts] Re: Query about List and about 10 MHz Distro

[Lux, Jim]

On 8/29/21 11:07 PM, Anders Wallin wrote:
> FWIW we've played with various SMA-to-SFP converter boards in the lab for
> 10MHz or 100MHz distribution.
>
> A bare-bones SFP board is e.g.
> https://github.com/aewallin/SFP-Breakout-Board
> That interfaces directly to the differential AC-coupled TX and RX pins of
> an SFP.
>
> If you want some buffering (and limited bandwidth at the same time) you can
> put an op-amp as a buffer and a transformer to convert to/from the
> differential TX/RX.
> Here's a design I've used https://github.com/aewallin/SFP2SMA_2018.03
> We also made a box around that board:
> http://www.anderswallin.net/2020/12/sfp-board-in-a-box/
>
> If your requirements are somewhere in 1e-14 or worse then this type of
> passive frequency distribution should work fine for maybe a few km fiber
> runs.
>
> Anders
>

This is really cool..