Speaking of navigation lights, when the big supertankers first came out,
folks weren't used to seeing them at night. There were several incidents
around Tokyo Bay where small coastal freighters thought that, because the
masthead and bow lights were so far apart, the tankers were two separate
Some LEDs produce large amounts of RFI well into the VHF spectrum. Interference
at HF frequencies is certainly an issue, but most of us aren’t on the SSB all
day and the noise is pretty obvious in SSB or AM modes. I can turn lights on
and off until it goes away.
Noise up into VHF is far more
