[RFI] RFI U-verse
J.Gordon Beattie, Jr., W2TTT
w2ttt at att.net
Sun Feb 27 08:19:42 PST 2011
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
Thanks & 73,
Gordon Beattie, W2TTT
From: rfi-bounces at contesting.com [mailto:rfi-bounces at contesting.com] On
Behalf Of Jim Brown
Sent: Sunday, February 27, 2011 6:16 AM
To: rfi at contesting.com
Subject: Re: [RFI] RFI U-verse
On 2/26/2011 4:29 PM, ka4rur at 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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