Jim's suggestion worked beautifully here! 14 turns of CAT5 cable on a
single 2.4" #31 core works much better than the old choke with 5 or 6 turns
through four stacked 2.4" #31 cores. It eliminated the last traces of RFI
coming through my computer speakers running 700w on 75 meters.
And three more
I'm reposting this to the reflector:
Yes, I do have DSL. I have a very good RFI filter on the DSL line coming
to the modem so I think it might be a cabling problem. Everything was
working FB until recently when I reconfigured the hardware. I have a few
clamshell filters and I also have some
On 1/13/2013 5:08 AM, Brian Machesney wrote:
Wrapping everything in ferrite did not solve my 160m RFI problems. OZ7C
provided a filter circuit that I use successfully:
Let's define the problem. Interference to DSL is VERY different from
interference to Ethernet. I agree with Pete that using w
that
feeds it was also very noisy and even outputting on the RG6.
Carl
KM1H
- Original Message -
From: "Mike Waters"
To: "topband"
Sent: Saturday, January 12, 2013 10:38 PM
Subject: Re: Topband: Help with RFI
I wrap a few turns of the CAT 5 Ethernet cable
On 1/12/2013 7:38 PM, Mike Waters wrote:
I wrap a few turns of the CAT 5 Ethernet cable coming into the back of my
shack PC around a few stacked 2.4" diameter #31 ferrite cores.
For 160M, 14 turns on a single #31 core is a pretty good choke. Don't
overlook power supply cables as a possible rec
: Re: Topband: Help with RFI
I wrap a few turns of the CAT 5 Ethernet cable coming into the back of my
shack PC around a few stacked 2.4" diameter #31 ferrite cores. Works for me.
73, Mike
www.w0btu.com
On Sat, Jan 12, 2013 at 4:48 PM, W7KW wrote:
>
> I am having a problem with RF g
Wrapping everything in ferrite did not solve my 160m RFI problems. OZ7C
provided a filter circuit that I use successfully:
http://www.ddxg.dk/oz7c/adsl/adsl_160m_filter.pdf
G3VMW has done additional work:
http://www.rsars.org.uk/ELIBRARY/BBCONNECT.pdf
73 -- Brian K1LI
On Sat, Jan 12, 2013 at 1
I would seriously consider going wireless. A few years ago I had a
direct strike on the top of my tower. Fortunately, everything was
disconnected, so I sustained no damage in the shack. In fact, the only
significant damage was to two computers on a cabled Ethernet network,
both of which showe
I wrap a few turns of the CAT 5 Ethernet cable coming into the back of my
shack PC around a few stacked 2.4" diameter #31 ferrite cores. Works for me.
73, Mike
www.w0btu.com
On Sat, Jan 12, 2013 at 4:48 PM, W7KW wrote:
>
> I am having a problem with RF getting into my Ethernet cables. Anyone
>
Topband --
I am having a problem with RF getting into my Ethernet cables. Anyone have any
recommendations for a clamp-on filter that would help remove 1.8 MHz RF? The
problem seems to be frequency selective between (1800 to 1830 KHz). No problem
1830 and above.
Thanks,
Terry W7KW
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