[RFI] RFI In My Shack

[Dave Cole (NK7Z)]

How long is the networking cable, and what frequency did this happen on?

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 12/02/2017 10:30 AM, Joe wrote:
> I think I forgot to mention...I have **no** audio issues with the L7, only
> the Henry.  Go figger!
> 
> OH, and I have very little (read: next to none!) RF in the shack.  That is
> what is puzzling me!  How in the heck is the RF getting into my network and
> only affecting the printer?
> 
> Joe - W7RKN
> 
> -----Original Message-----
> From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of Dave Cole (NK7Z)
> Subject: Re: [RFI] RFI In My Shack
> 
> Hi again,
> 
> Given the old amp caused issues with your audio, and your new amp causes
> issues with your network, we can assume you have some level of Common Mode,
> (CM).
> 
> My first step would be to buy or build a common mode sniffer.  MFJ makes one
> for around $100.00, or you can build one for around 10 bucks:
> 
> https://ham.stackexchange.com/questions/1271/how-to-detect-common-mode-curre
> nts-or-rf-in-the-shack
> 
> If after testing with that you discover lots of CM, then start choking it on
> the booth ends of the feed-line.
> 
> That may solve both your RFI issues; audio, and Networking.
> 
> If that does not solve things report back here with results.  The AC would
> be the next thing I would look at...
> 
> 73s and thanks,
> Dave
> NK7Z
> http://www.nk7z.net
> 
> On 12/02/2017 10:07 AM, Joe wrote:
>> Yes, A Windom, that is coax fed into a 4:1 balun.  Remember, I did
>> *NOT* have this issue with my Henry amplifier, even at over 2000 watts
>> out.  [Euro version of the amp!]
>>
>> Joe - W7RKN
>>
>> -----Original Message-----
>> From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of Dave Cole
>> (NK7Z)
>> Subject: Re: [RFI] RFI In My Shack
>>
>> Let me guess, you are using an Off Center fed dipole, or some sort of
>> asymmetrical antenna  If not what is your transmit setup.
>>
>>
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