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Author Topic: Need source for a few dozen ferrite beads/toroids  (Read 2201 times)
KG6OMK
Member

Posts: 107




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« on: February 12, 2007, 08:57:03 PM »

I've got a bunch of computer equipment and  bad RFI in an around the 2M band (at least)  I can find some of it.  The worst one turned out to be a PC that radiated even if powered off as long as a network cable was plugged into it.  The cable did not radiate.  

I'm going to attack this on multiple fronts

1) Install ferrite every place I can

2) Ground everything I can to a quality RF ground

3) replace as many of the plug-in wall transformers as I can with a DC distribution system

Having some trouble finding a low price source of the ferrite chokes.  I need a few dozen assorted sizes and types
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KB9CRY
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Posts: 4283


WWW

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« Reply #1 on: February 13, 2007, 05:23:55 AM »

Amidon
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W1YW
Member

Posts: 1




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« Reply #2 on: February 13, 2007, 09:17:49 AM »

Ferrite comes with different nmbers corresponding to different frequency ranges. Some go up to WiFi.

If you buy on price it likely won't be at the right freq range.

Try FAIR-RITE or FERRISHIELD.
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WA5ZUP
Member

Posts: 39




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« Reply #3 on: February 14, 2007, 05:11:58 AM »

http://www.palomar-engineers.com/
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AD5TD
Member

Posts: 152




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« Reply #4 on: February 20, 2007, 07:28:54 AM »

Saw yesterday that DX Eng. has them now.  One of the sponsors of eHam.
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KE7KZN
Member

Posts: 8


WWW

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« Reply #5 on: March 19, 2007, 02:09:50 AM »

What material is recommended? I would like to see if I can suppress noise from my plasma tv... I have read material 77 but also 73? (For noise under 30Mhz?)

Thanks!
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