[RFI] 6 Minutes - a record?
svetanoff at earthlink.net
Sun May 20 20:51:15 PDT 2012
Please do us a favor and list make and model of the fan. Frankly, I am a
bit surprised about a ceiling fan causing RFI, but I suupose anything is
possible. I say that because I have 5 ceiling fans in my house and all
have straight induction motors - they are "RF quiet". Speed change is
accomplished by switching the number of poles within the motor.
Does this fan use solid state speed control? It would be interesting to
> [Original Message]
> From: Gerald Wolczanski <jerrywolczanski at earthlink.net>
> To: <RFI at contesting.com>
> Date: 5/19/2012 7:14:20
> Subject: [RFI] 6 Minutes - a record?
> Scott (transistor at charter.net) assisted me in chasing down an RFI
> problem that was wiping out portions of the 40 meter CW band. I finally
> traced it to a sailboat dual-battery charger that was keeping my boat
> batteries charged in the off-season.
> Unplugging the unit did not make the interference immediately go away.
> Indeed the RFI did not go away until roughly 6 minutes after I unplugged
> the charger (batteries were still connected to the charger).
> Scott asked that I share this with the RFI folks.
> So, that took care of my RFI problems until I installed a new ceiling
> fan in the bedroom yesterday. I confirmed it was the fan by shutting
> off the CB for the bedroom. I'm going to build the "brute force AC
> filter" described in the ARRL handbook and put it into the AC line
> feeding the unit (up in the attic).
> Jerry W
> Warrenton, VA
> RFI mailing list
> RFI at contesting.com
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