Our problem in such cases is still the Commission's reluctance to
enforce the rules against causing harmful interference regardless of the
maximum permitted level of emissions.
I note that Class A ballasts are still being sold without even a label
they're not to be used in residences.
Cortland, KA5S
On 9/24/2020 10:50 AM, Hare, Ed W1RFI wrote:
We have come a long way, but still have a ways to go. Fortunately, we are
dealing with a company that is holding space for all of this and willing to
work towards better and better solutions.
The initial installations were pretty bad. They simply ran a single wire
between anything that was series strung, which formed a giant loop. The FCC
rules on emission control ONLY conducted emissions ON THE AC MAINS, so any
noise present on that loop did not have a specific limit. So, the early
systems complied with the letter of the law.FCC has rarely been required to
even assess an individual circumstance as harmful interference, and when it
has, that assessment has been all over the map. I do know they will consider
the level of interference, the frequency occupancy, a comparison of that level
to median values of man-made noise (typically S6+ on lower bands, btw...),
whether the amateur can make use of frequency agility, how often it occurs,
time of day and possibly even the phase of the moons orbiting Saturn.
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