Snap-On Ferrite Beads!

[N1SQB]

Hello!
I was not sure exactly what exact topic these would fall under, so I am posting here.
Has anyone had any experience with these? Do they really work?


http://www.dxengineering.com/ProductDetail.asp?ID=182&SecID=89&DeptID=25

Manny

 

[N8DV]

Yes, I have them on all my transmission lines. They keep rf from traveling on the outside of coax cable.

 

[N1SQB]

Great!
That what it says they do but I like hearing the real world experieces like yours. Have you noticed a difference RX/TX or RFI wise with/without them?


Manny

 

[kb2vxa]

Real world experience; sometimes they work, sometimes they don't. Sometimes nothing works, that's the real world.

 

[JnglMassiv]

Will those fit around my scanner's rubber ducky?

*ducks and runs*

 

[trooperdude]

I use them on all of my computer equipment in the shack (7 systems and
a large KVM), and all cables including coax.

Seems to work quite well for me.

I had an RF issue with monitor cables before I deployed them.

I got mine at Halted. http://www.halted.com/

I also used spray on case shield for a large crt gaming monitor, and shielded serial cables for my remote scanners.

 

[Thayne]

A lot of cords of various types, (Power, Data) come with them installed already, so they must help filter out various types of hash or spurious stuff.

 

[N1SQB]

Thanks for the replies guys!
I'll give them a try. Cant hurt!

Manny

 

[nd5y]

Ferrite beads are made with different ferrite "mixes" for different frequency ranges, etc.
If you don't know what you are doing or what mix what you are buying you will just be wasting money.

 

[N8DV]

Basically, the snap on ferrite beads are called toroids. They come in all sizes. You can buy the rings and wrap several turns of coax (if the cable is flexible enough) around one of these cores and presto! make your self a small transformer to cut down rf on coax. Or you can use the snap on cores.