[RFI] Keurig coffee vs Astron Rs35M

[Roger Shultz]

Well, thanks all for solving that mystery. Whenever I would use a Wagner
heat gun for heat shrink tubing, something on my test bench would make the
same noise you describe. I never knew what it was but I'll bet dollars to
donuts I do now! I never considered that it might be the Astron RS-20m.

73, Roger, NJ2R

-----Original Message-----
From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of Dan Violette
Sent: Wednesday, April 09, 2014 10:28 PM
To: Gary at ka1j.com; rfi at contesting.com
Subject: Re: [RFI] Keurig coffee vs Astron Rs35M

Mine hums with upstairs hair dryer use.  Dan

-----Original Message-----
From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of Gary Smith
Sent: Wednesday, April 09, 2014 7:56 AM
To: rfi at contesting.com
Subject: [RFI] Keurig coffee vs Astron Rs35M

Every time I turn on my Keurig K-Cup coffee maker I've been hearing a very
loud sound like a low loud hum coming from my Astron RS35M power supply. I
thought it was coming from the studio monitors it was so loud. Happens only
when the Keurig is on. I've got wraps of power line through a large clamp-on
ferrite to the Keurig and one on the power line to the Astron & on the DC
leg coming out. this hum is unaffected. I don't believe they are on the same
house wiring circuit.

Idears?

73,
Gary, KA1J



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