about the wrt55ag antennas

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luis55
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Joined: 24 Jun 2009
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PostPosted: Tue Jul 06, 2010 4:07    Post subject: about the wrt55ag antennas Reply with quote
Hi, I was wondering if someone knows what's the functionality of this ring-like thing.

I've got this antenna from my old wrt55ag and soldered it to a wrt54g2, but the performance is worse than with the stock internal antennas. Sad
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Sash
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Location: Hesse/Germany

PostPosted: Tue Jul 06, 2010 7:43    Post subject: Reply with quote
it must be your soldering. the ferrite is ok where it is
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luis55
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Joined: 24 Jun 2009
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PostPosted: Tue Jul 06, 2010 22:35    Post subject: Reply with quote
What's the purpose of the ferrite?
eddie97044
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Joined: 03 Nov 2008
Posts: 83

PostPosted: Thu Jul 15, 2010 20:46    Post subject: Reply with quote
Filters out interference or EMI (Electro Magnetic Interference) and RFI (Radio Frequency Interference) to an extent I believe. They sometimes put these on AC power cords too. Usually for noise sensitive devices.

I beliieve my dremel has one on it's power cord, also commonly used in pc power supply's.

google "Ferrite Choke"

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