Author Topic: fiber optics to reduce selfmade QRM  (Read 7084 times)

pd0swl

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fiber optics to reduce selfmade QRM
« on: 2011-06-24, 18:28:43 »
For who's interested and wants a to reduce selfmade QRM to a minimum:

I've decided to connect my Remoterig with a fiber-optic link to the router.
This gives galvanic seperation and keeps ethernet/router QRM at minimum levels.
With fiber optics you can cover a 2km link between router/DSL and your Remoterig.

The Allied Telesyn "media converters" are a good solution for this as they are becoming very cheap secondhand.
I tried the MC101XL (100baseT) with good results, but still noticed some ethernet carriers.
Now I use the older AT-MC13 (10baseT) which I obtained for 20 euro a piece on Ebay.
QRM from the ethernet link and Remoterig data noise has been reduced drastically.

If you want to locate your station galvanically seperated in a minimum QRM location far away from router/ethernet noise I can highly recommend a fiber-optic link.

73
Paul
PD0PSB