[RFI] 15 meter RFI problem - Super documentation

Tim Duffy K3LR k3lr at k3lr.com
Sun Apr 20 16:03:53 EDT 2008

I think there is a BIGTIME Part 15 problem here.


This detail from W8WWV has been sent to the ARRL folks for follow up
communication with the FCC.



Tim K3LR




From: Jimk8mr at aol.com [mailto:Jimk8mr at aol.com] 
Sent: Sunday, April 20, 2008 3:02 PM
To: jvpoll at dallas.net; k3lr at k3lr.com; rfi at contesting.com
Subject: Re: [RFI] 15 meter RFI problem - Super documentation


Is there not an FCC Part 15 issue at work with the device?


73  --  Jim  K8MR




In a message dated 4/20/2008 3:34:52 P.M. Eastern Daylight Time,
jvpoll at dallas.net writes:

Wow ... and how timely.

I believe I have a spectral 'display' of one of those; it has been
bugging me for awhile in my part of the world.

Maybe post it a little later ...

The key part was this:

   "The baseband black and white video signal
    is shifted up to approximately 20.5 MHz
    to 22.0 MHz."

That's right in the area of this RFI I have seen, with some
weaker signal artifacts detectable up through 26, 27, and
even 28 MHz..

JimP  // WB5WPA //

----- Original Message -----
From: "Tim Duffy K3LR" <k3lr at k3lr.com>
To: <rfi at contesting.com>
Sent: Sunday, April 20, 2008 2:18 PM
Subject: [RFI] 15 meter RFI problem - Super documentation

Thanks to Greg, W8WWV who found this RFI source and detailed his experience.



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