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Re: [RFI] RFI U-verse

To: <jim@audiosystemsgroup.com>, <rfi@contesting.com>, "'Gordon Beattie'" <w2ttt@att.com>, "'J.Gordon Beattie, Jr., W2TTT'" <w2ttt@att.net>
Subject: Re: [RFI] RFI U-verse
From: "J.Gordon Beattie, Jr., W2TTT" <w2ttt@att.net>
Date: Sun, 27 Feb 2011 16:19:42 -0000
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Putting a choke on the network feed reduces bandwidth to the service and
creates instability.  There are other measures that can be applied to
eliminate the RF getting into the RG.  I can point you through the
appropriate channels to get this done if you have a problem with RFI to your
U-Verse service.

Thanks & 73,
Gordon Beattie, W2TTT

-----Original Message-----
From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com] On
Behalf Of Jim Brown
Sent: Sunday, February 27, 2011 6:16 AM
To: rfi@contesting.com
Subject: Re: [RFI] RFI U-verse

On 2/26/2011 4:29 PM, ka4rur@gmail.com wrote:
> 3. Any suggestions?

You didn't say what ferrite core material you're using or how many turns.

It takes more turns for 160 than for 80 and above, and #31 material 
works much better than #43 or #61.  I'd try to get at least 14 turns, 
and more is better. If you've already done that much, with #31 material, 
add a second choke in series.

The best place for the choke(s) is as close as practical to the U-Verse 
box that is receiving the signal.  A choke is unlikely to do much good 
in/near a telephone splice box. It's the electronics that detects the 
RF, and that's where the choke should be.

73, Jim K9YC
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