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

AA5CT jwin95 at yahoo.com
Wed Apr 1 09:01:34 EDT 2020

On the Ofcom website there is a picture of the spectrum analyzer and an
expanded image of the bulb (240V 60W) if one choose to open the picture
in a new browser tab.


de AA5CT Jim


On Wednesday, April 1, 2020, 5:47:37 AM GMT-5, Rob Atkinson <ranchorobbo at gmail.com> wrote: 

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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