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

[Rob Atkinson]

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

73
Rob
K5UJ

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.
https://qrznow.com/ofcom-engineers-shine-a-light-on-interference-issue/