[RFI] 160 Meters Interference Tracked Down To Local Manufacturing Facility

David Cole dave at nk7z.net
Fri Oct 30 08:25:12 EDT 2015

Nice work!  Lucky you it is so narrow band...  I just had one pop up
last night, that looks like a switcher on 40 Meters...  It has been low
level for about 6 months, now it hit 5 db over S9...  Sigh...  This is
like playing Whack-A-Mole...  My new one is every 72KHz., and about 18
KHz wide...  Should be easy to find...  I have started the
characterization procedure, and am doing S-Meter lite recordings, and
taking FFTs of it...  That will give me a starting time, ending time,
and a way to match it from the mobile...

Thanks and 73's,
For equipment, and software setups and reviews see:

For MixW support see;
For Dopplergram information see:
For MM-SSTV see:

On Fri, 2015-10-30 at 07:48 -0400, Don Kirk wrote:
> Thought I would share my latest RFI issue that I tracked down yesterday to
> a local manufacturing facility located 0.5 miles from my QTH.  Below is a
> link to a website that documents the interference, and it includes a link
> to a youtube video that has recordings of the interference from my shack as
> well as from within the office area of the manufacturing facility.
> I will now work with the facility manager to track down the actual source
> of the interference.  Turns out that I am actually an old customer of this
> facility through my daytime job (very small world).
> website link http://sites.google.com/site/rfimetro/
> Stay tuned to find out the actual source.
> 73,
> Don Kirk (wd8dsb)
> _______________________________________________
> RFI mailing list
> RFI at contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi

More information about the RFI mailing list