I had the same issue. It was caused by my Powerwerx SS-30DV. After trying a number of things to mitigate the noise, I ended up replacing the power supply with a Samlex SEC 1235M. Noise gone. Problem solved.
Marty - K1MTK ----------------------------------------------------------------------------------------------- Message: 20 Date: Sun, 19 Jun 2016 23:55:59 -0500 From: Clay Autery <[email protected]> To: Elecraft Reflector <[email protected]> Subject: [Elecraft] RFI on K3s Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8 I am seeing a repetitive RFI source every 34kHz from somewhere less than 20MHz thru 30MHz plus... See attached image. The amplitude alternates high/low every other appearance. The overall amplitude is higher or lower depending on the location within the spectrum.... Almost a sine wave function with a VERY long period. Anyone want to hazard a guess as to what is causing it? I disco'd every switch-mode power supply in the shack and adjacent rooms (couldn't do the whole house as the XYL was home).... EXCEPT my Powerwerx SS-30DV PS running the K3s/P3. Don't have a battery to run the radio on right now... -- ______________________ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 - ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
