Looking for a router that is somewhat impervious to R.F. interference

DV

David Decoons, wo2x

George KF2T

Mike-VA3MW

Jeff_W4DD

How is the router connected to the internet? DSL modem, cable modem, or something else? Most routers are powered by wall warts so typically have no good ground connection and no good way to get rid of RF. Since cable modems usually have a reasonably good ground via the RG6 cable, I ran a 3ft shielded ethernet cable berween the cable modem and the router. On my router (an Asus), the neg DC, ant connectors, and rj45 shells are all tied together, but were floating, no ground connection. Don't use shielded cables off of the common sites. The drain wires are not soldered to the rj45 shell and are intermittent. I used amphenol csbles from Mouser.

Fred Friedl

DV

Gary - WB5ULK

EA4GLI

In my experience it tends to be the power supply of the router and not the router itself. Try with a different psu for the router, or if you are lucky and it runs on 12v use your station power supply.

Craig_KØCF

Michael N3LI

I had two netgear routers that would reboot when I used 40 meters. I ended up using good ethernet cables, 2 inch toroids, on the cables,  and bought an Arris Router that had a metal case.

Lasse Moell

Lasse Moell

Larry Benoit

DV

DV

Lasse, good suggestions.  Two of my leads connecting to the router have the wire run through the bead a couple of times, but the beads I had for the other lines will only accept a straight through run. I have looked at the FairRite you suggested, the problem is it's size and bulk and the shelf on which the router and switch is located will not handle them conveniently.  But, I have placed that core in my notes for future use.  Thanks.

DV

I have a small 8 port switch that the router feeds.  It has a metal cabinet.  Tried grounding the chassis once and it made thing much worse, probably formed a ground loop somewhere in the system.  The switch remains un-grounded.

DV

DV

Salvador, my Netgear router uses a 2.5 amp 12 VDC supply.  I'll look into a amateur power supply that is not a switching supply or if it is it has more filtering. Can't use station 12 VDC as its too far away.

DV

Thanks Gary, all good suggestions. There are other suggestions to buy beads with 3/4" and loop the wire through as many times as possible.

Larry Benoit

Gary - WB5ULK

In the middle-era of ethernet switches, they were notoriously noisy - yes, even Cisco, and so the vendors typically shipped new switches (we were buying 48 port switches at the time) with a bag of clamp-on ferrites which would fit the larger ethernet cables (still used today). We did not experience the RF issues which others had, so I had drawers-full of these. One particular Cox Cable Modem I had was awful w/r/t noise susceptibility, and I started putting them the network cable stacked one after the other until the noise stopped being an issue. The price was right and it worked. The rest of the advice which you are getting is very good as well. What works "for you" is the best solution!

wa4wab

Lasse Moell

Doug, it's not just the size but material that is important. The type I suggested do work with RG-213, but you can find smaller sized ferrite of -31 material that will work with CAT cables.  I do recommend you use ferrites not only on your TCP/IP cables but on DC-cables to your router, on mains and coax cables. Just make sure you do use the correct ferrit material -31 (or 43 may work).