"clifto" wrote in message
...
MLD wrote:
Nice thought, but I went a bit down that road--I'm fuzzy about the
specific
details but for one reason or another the people that I spoke to didn't
give
me anything positive. Something about the generation of RF interference
not
applying to a product like a furnace.

Anything that generates RF inside the USA is regulated by the FCC. If your
cat's butt emits RF in the USA it's regulated by the FCC.

Wrong. If the cat's butt emits RF, it's regulated by the FCC. But, digital
equipment used only in transportation vehicles - busses, cars, aircraft -
and equipment used in appliances - HVAC equipment mentioned specifically -
are exempt from Radio Frequency Device regulations. The rule says "....are
exempt from the specific technical standards and other requirements
contained in this part. The operator of the exempted device shall be
required to stop operating the device upon a finding by the Commission or
its representative that the device is causing harmful interference".

As to harmful interference, just because the noise floor rises 20db for 5
seconds on a 50 kHz segment of 20 meters when a bus passes your house, it
isn't going to be considered harmful interference. As much as you might like
to think that it is, a detectable signal from your neighbors Air Conditioner
isn't going to be considered "harmful interference". A carrier that
obliterates a specific, used - as in "there's a repeater 3 miles away
running 200 watts on 444.600, and the carrier from the Carrier (or Trane)
nukes it" - frequency might result in a letter. Just " 'cause you can hear
it" ain't gonna cut it.




47CFR15.103