[RFI] FW: The ARRL Contest Update for April 1, 2020

Cianciolo, Paul, W1VLF pcianciolo at arrl.org
Wed Apr 1 09:11:07 EDT 2020


I too am a little disappointed that the radiation mechanism was not mentioned.  In fact if you look closely at the photo of "the bulb" or maybe it was just "a bulb" from a stock photo it says 60 watts 240 volts .
It appears from what I can see to be a normal incandescent type bulb.

The word LED is not mentioned in the article.. 

Wish I had more info.


Paul Cianciolo, W1VLF
ARRL EMC Engineer

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-----Original Message-----
From: RFI <rfi-bounces+pcianciolo=arrl.org at contesting.com> On Behalf Of Rob Atkinson
Sent: Wednesday, April 1, 2020 6:44 AM
To: Rate Sheet <rate-sheet at arrl.org>; rfi <rfi at contesting.com>
Subject: Re: [RFI] The ARRL Contest Update for April 1, 2020

Sadly, the qrznow article covered everything except what is really
interesting:  the mode by which the seemingly incandescent "vintage"
bulbs radiated RFI.


Vintage light bulbs were the ultimate cause of interference to aircraft communications in the Glasgow, Scotland airport area, but finding it made an interesting story on QRZnow.com. Four bulbs were all it took to be a real problem.
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