it is worth remembering that most appliances are exempted from Part B
(or A) at 15.103, only having to comply with not causing harmful
interference. FCC Knowledge data base I see that new guidance last year
removed exemption Verification (Section 2.902) for: External Thermostats
connected via wire and not contained within the appliance, Exercise
Equipment, Hair Dryers, Heat Guns, Hair straighteners, Electric
Blankets, Paper Shredders, Bed Warmers, and Portable Personal Fan Heaters.
See Publication Number 772105
<https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=33062>
(3/29/2012) (new).
excerpt: /An exempt appliance is only exempt from equipment
authorization procedures for the functions associated with the digital
device circuitry.*The appliance remains subject to the requirements in
Section 15.5 requiring the device not cause harmful interference, and
Section 15.29 regarding inspection by the Commission.* It is strongly
recommended that manufacturers or importers make every effort to meet
the specific technical standards, follow appropriate FCC equipment
authorization procedures, and comply with quality practices to ensure
all units sold and marketed are, and will remain, compliant. /
(emphasis added)
Cortland
KA5S
On 5/12/2013 2251, Dale wrote:
David,
Be certain to specify FCC Part 15 Class B limits. Those are the limits
applicable to home and office environments.
After that, it will then be up to you to determine if Part 15, Class B limits
are, in fact, adequate for your application. Keep in mind that if your
antennas are fairly close to the shack or house (less than 50 feet away), you
could still have problems with RFI, especially in the HF range. You probably
won't know until you try it.
73, Dale
WA9ENA
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