Yep. Correct. Only in the User's Manual.
On Wed, Mar 21, 2018 at 1:10 AM, Dave Cole (NK7Z) <dave@nk7z.net> wrote:
> Thanks for the info Dave... I saw, or heard someplace that the FCC no
> longer requires a mark on the device, but just in the book... Have you
> heard anything about this? I can't remember where I heard it.
>
> 73s and thanks,
> Dave
> NK7Z
> https://www.nk7z.net
>
> On 03/20/2018 01:25 PM, David Eckhardt wrote:
>
>> Only the FCC logo is REQUIRED to be on the device if it is Class B, home
>> and small office. The statement and other regulatory information, more
>> times than not, is contained in the 'User's Manual'. Most have a
>> regulatory section devoted to this kind of stuff. If there is no FCC logo
>> on the product, assume it is either Class A (Industrial) or the supplier
>> doesn't know much about the regulatory world and required markings (no
>> attehtion to EMC/RFI). This is based on some 30 years of doing EMC/RFI
>> for
>> a living. What I write is from experience. When we had a real FCC,
>> things
>> were very different!!!!
>>
>> If it is from China or the PacRim, just assume it has not been tested nor
>> any attention paid to EMC/RFI. I have read many,.....many,.....bogus
>> 'reports' on Chinese products, many of which are assembled from other
>> products and piece mealed from other reports and really don't even apply.
>> I've also experiencef many, . . . . many, . . . . . instances of false
>> labeling from China.
>>
>> Bottom line: 1) When you shop for something, take a battery operated
>> radio with you and request a test of the item.
>> 2) It's hard to find otherwise, but don't buy if the
>> electronics or products are 'Made in China".
>> 3) Don't buy if in the inttruction manual or posted
>> on
>> the product, "Made of Foreign and Domestic Parts". That's a
>> license for Chinese switchers with, again, no
>> attentioin paid to EMC/RFI.
>>
>> However, the biggies like Apple and the like know the game and are usually
>> to be trusted (except for their wall warts).
>>
>> I realize all this reads rather negative, but its reality these days!
>> Just
>> believe me ! ! !
>>
>> Dave - WØLEV
>>
>> On Tue, Mar 20, 2018 at 7:40 PM, Leonard Halvorsen <lhalvors@pppl.gov>
>> wrote:
>>
>> Has everyone come to the same conclusion...
>>> "*...**IF* you can find them." ???
>>>
>>> [RFI] LED Bulb noise Eleta E12
>>>
>>> I read a while ago that to avoid, or at least mitigate to great extent,
>>> interference, an RF noise source must meet FCC standards for a "Class B"
>>> device. What I read stated it was defined in Part 17 (it seems to be Part
>>> 15 instead; possibly a typo) of the FCC rules, but I found many
>>> references
>>> to it in this *official* 120-page pdf document
>>> <https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=
>>> 0ahUKEwjgprG4lLPZAhVHulMKHQF5AQQQFggoMAA&url=https%3A%2F%
>>> 2Fwww.gpo.gov%2Ffdsys%2Fpkg%2FCFR-2009-title47-vol1%2Fpdf%
>>> 2FCFR-2009-title47-vol1-part15.pdf&usg=AOvVaw1Op9mrNNvD_YdVp_5mAmKU>.
>>> This passage on page 23 states what manufacturers must put on such
>>> devices..
>>>
>>> (b) For a Class B digital device or peripheral,
>>> the instructions furnished the
>>> user shall include the following or
>>> similar statement, placed in a prominent
>>> location in the text of the manual:
>>>
>>> NOTE: This equipment has been tested and
>>> found to comply with the limits for a Class
>>> B digital device, pursuant to part 15 of the
>>> FCC Rules. These limits are designed to provide
>>> reasonable protection against harmful
>>> interference in a residential installation.
>>> This equipment generates, uses and can radiate
>>> radio frequency energy and, if not installed
>>> and used in accordance with the instructions,
>>> may cause harmful interference
>>> to radio communications. However, there is
>>> no guarantee that interference will not occur
>>> in a particular installation. If this equipment
>>> does cause harmful interference to
>>> radio or television reception, which can be
>>> determined by turning the equipment off and
>>> on, the user is encouraged to try to correct
>>> the interference by one or more of the following
>>> measures:
>>> —Reorient or relocate the receiving antenna.
>>> —Increase the separation between the equipment
>>> and receiver.
>>> —Connect the equipment into an outlet on a
>>> circuit different from that to which the receiver
>>> is connected.
>>> —Consult the dealer or an experienced radio/
>>> TV technician for help.
>>>
>>> I tried to locate devices that adhered to this at places like Home Depot
>>> and Lowes, but was unsuccessful.
>>>
>>> This 7-page pdf document
>>> <https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=
>>> 0ahUKEwjSsf7jl7PZAhWStlkKHQtWCB0QFggyMAA&url=https%3A%2F%
>>> 2Fwww.cableorganizer.com%2Fimages%2Fkensington%
>>> 2Fmicrosaver-alarm-lock%2FFCC-rules.pdf&usg=AOvVaw2kXOZ71Vpq
>>> TqByfN3bb6HO>
>>> attempts to abbreviate and interpret the legalese above. In it is this
>>> passage on page two...
>>>
>>> Two levels of radiation and conducted emissions limits for unintentional
>>> radiators are specified in FCC Part 15 Subpart B.
>>>
>>> The two levels are Class A digital devices, the higher less strict
>>> limits,
>>> and Class B digital devices, the lower more strict limits.
>>>
>>> Manufacturers are encouraged to meet the Class B digital device limits.
>>>
>>>
>>>
>>> So, *the key* seems to be to find devices that meet "Class B" standards
>>> ...
>>> *IF* you can find them.
>>> If they are made someplace in the Far East, that is probably impossible.
>>> Compliance costs are probably too high, and most people probably don't
>>> care.
>>> And if you can find them, they are probably expensive.
>>> _______________________________________________
>>> RFI mailing list
>>> RFI@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/rfi
>>>
>>>
>>
>>
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--
*Dave - WØLEV*
*Just Let Darwin Work*
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