On 5/13/2013 7:16 AM, Steve wrote:
It seems a stretch to me that typical HVAC company would even know
what radio frequency interference is, much less know how to deal with
it or offer written performance guarantees about it.
That's probably true, but the manufacturers of the equipment should know
about it, and their products should be free of RFI. Sometimes accessory
filters are required to do that, and wiring methods can be important.
When we insist that the HVAC contractor (or other vendor of equipment)
provide an RFI-free product, we alert that contractor that RFI can be an
issue, and a good contractor will ask his supplier the right questions.
If accessory filters are needed, or if specific wiring techniques are
required, he can build those things into his price for the work.
In most fields of work, there are good guys who try to do things right
and are willing to learn new stuff, and there are those who don't. When
we raise our concerns in advance, we weed out the losers and identify
the winners.
73, Jim K9YC
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