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Re: [RFI] Trying to locate the Part 15 compliance note...

Subject: Re: [RFI] Trying to locate the Part 15 compliance note...
From: "Dave Cole (NK7Z)" <dave@nk7z.net>
Date: Thu, 14 Mar 2019 09:47:03 -0700
List-post: <mailto:rfi@contesting.com>
Hello Dave E,

Many thanks for that link, that was statement I was looking for:

"This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation."

Part (2) is exactly what I was talking about... I think because stoves have been exempted from Part 15, the Part 15 notice is not there. Maybe Ed can expand on this a bit more, as he is far more knowledgeable than I in this sort of thing.

My hope is that somewhere the FCC has stated the part about accepting interference for even non part 15 devices, I just can't locate it!

If I can locate that statement, then I just hand that off to the vendor, and ask them to help the customer they sold the range to in front of the customer.

73s and thanks,
Dave (NK7Z)
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon

On 3/14/19 9:06 AM, David Eckhardt wrote:
Go to (3) in the following URL:

Don't know if this will help, but it is a brand new requirement.

Dave - WØLEV

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On Thu, Mar 14, 2019 at 3:30 PM Dave Cole (NK7Z) <dave@nk7z.net <mailto:dave@nk7z.net>> wrote:

    Hi Ed,

    Many thanks to the ARRL for the assistance in this!  Also, thanks for
    the link, and thanks to the ARRL for archiving that book as well!!

    I am aware that pert 15 applies to equipment transmitting RFI, what
    I am
    looking for the statement to the effect that a device must accept
    interference from all licensed transmitters, which I think used to
    be on
    the Part 15 statements.

    I was hoping that the stove, having a computer in it, might have that
    sort of label on it, containing the statement covering acceptance of RF

    Is there any sort of statement by the FCC anywhere that indicates a
    device must accept all interference from licensed transmitters, that
    might be applicable to kitchen utilities?  That would end my issues

    In looking at the handout linked in your email, adding a low pass
    to the stove might prove difficult, unless we consider ferrite material
    a low pass filter. :)

    Did you get the model number I sent of the stove?  Also please note the
    complainant stated that GE has an RFI kit for the 110V volt version of
    the stove, but not the 220V version of this device...

Again, many thanks to you and the ARRL for the assistance here Ed. This
    will help in getting prepared for the meeting with the vendor, and the
    owners of the stove.

    Having the vendor state that a close by ham may be causing the problem
    has biased the owners completely, so education is in order, but that is
    difficult in this sort of situation.

    I have sent my KPA500 to Elecraft to get a compliance check in
    preparation for a meeting with the vendor, and the owners of the
    affected stove.

    I am considering asking the vendor to pay for this once the amp is
    proven good...  But that will happen after the RFI issue is solved.

    73s and thanks,
    Dave (NK7Z)
    ARRL Technical Specialist
    ARRL Volunteer Examiner
    ARRL OOC for Oregon

    On 3/13/19 1:21 PM, Hare, Ed  W1RFI wrote:
     > Those regulations all apply to emissions from the device. In the
    US, with very few exceptions, there are no FCC rules regarding immunity.
     > This now-out-of-print-but-wisely-archived FCC document may help:
     > http://www.arrl.org/fcc-info-1
     > See the CIB Interference Handbook and look for the statement
    about non-radio devices improperly functioning as radio receivers.
     > Ed, W1RFI
     > -----Original Message-----
     > From: RFI <rfi-bounces@contesting.com
    <mailto:rfi-bounces@contesting.com>> On Behalf Of David Eckhardt
     > Sent: Friday, February 22, 2019 2:41 PM
     > To: Dave Cole (NK7Z) <dave@nk7z.net <mailto:dave@nk7z.net>>
     > Cc: Rfi List <rfi@contesting.com <mailto:rfi@contesting.com>>
     > Subject: Re: [RFI] Trying to locate the Part 15 compliance note...
     > There likely wo't be a statement.  Home appliances are
    specifically exempt from FCC rules of any kind.  15.103(d) will be
    difficult to force into this case where it arcs when an amateur
     > § 15.103 Exempted devices.
     > The following devices are subject only to the general conditions
    of operation
     > in §§ 15.5 <https://www.law.cornell.edu/cfr/text/47/15.5> and
    15.29 and 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
     > Operation
     > shall not resume until the condition causing the harmful
     > has been corrected. Although not mandatory, it is strongly
    recommended that the manufacturer of an exempted device endeavor to
    have the device meet the specific technical standards in this part.
     > (a) A digital device
     > utilized exclusively in any transportation vehicle including
    motor vehicles and aircraft.
     > (b) A digital device
     > used exclusively as an electronic control or power system
    utilized by a public utility or in an industrial plant. The term
    public utility includes equipment only to the extent that it is in a
    dedicated building or large room owned or leased by the utility and
    does not extend to equipment installed in a subscriber's facility.
     > (c) A digital device
     > used exclusively as industrial, commercial, or medical test
     > (d) A digital device
     > utilized exclusively in an appliance, e.g., microwave oven,
    dishwasher, clothes dryer, air conditioner (central or window), etc.
     > (e) Specialized medical digital devices
     > (generally used at the direction of or under the supervision of a
    licensed health care practitioner) whether used in a patient's home
    or a health care facility. Non-specialized medical devices, i.e.,
    devices marketed through retail channels for use by the general
    public, are not exempted. This exemption also does not apply to
    digital devices
     > used for record keeping or any purpose not directly connected
    with medical treatment.
     > (f)Digital devices
     > that have a power consumption not exceeding 6 nW.
     > (g) Joystick controllers or similar devices, such as a mouse,
    used with digital devices
     > but which contain only non-digital circuitry or a simple circuit
    to convert the signal to the format required (e.g., an integrated
    circuit for analog to digital conversion) are viewed as passive
    add-on devices, not themselves directly subject to the technical
    standards or the equipment authorization requirements.
     > (h)Digital devices
     > in which both the highest frequency generated and the highest
    frequency used are less than 1.705 MHz and which do not operate from
    the AC power lines or contain provisions for operation
     > while connected to the AC power lines. Digital devices
     > that include, or make provision for the use of, battery
    eliminators, AC adaptors or battery chargers which permit operation
     > while charging or that connect to the AC power lines indirectly,
    obtaining their power through another device which is connected to
    the AC power lines, do not fall under this exemption.
     > (i) Responsible parties should note that equipment containing
    more than one device is not exempt from the technical standards in
    this part unless all of the devices in the equipment meet the
    criteria for exemption. If only one of the included devices
    qualifies for exemption, the remainder of the equipment must comply
    with any applicable regulations. If a device performs more than one
    function and all of those functions do not meet the criteria for
    exemption, the device does not qualify for inclusion under the
     > On Fri, Feb 22, 2019 at 3:32 AM Dave Cole (NK7Z) <dave@nk7z.net
    <mailto:dave@nk7z.net>> wrote:
     >> Hi,
     >> I have an interesting RFI issue happening.  My neighbors oven is
     >> acting up when I transmit.  It looks like the oven is taking RF
    in via
     >> the power lines.  In our discussions, part 15 compliance came up.  I
     >> have offered to have an electrician install some ferrite material on
     >> the power lines, and pay for it, but they want to pursue with GE as
     >> they indicated they may get a replacement stove...  Anyway...
     >> I have the model number for the stove, it is a GE Signature Cafe
     >> number C2S985SET9SS.
     >> After downloading the manual, the installation information, and the
     >> users guide, I can not locate a Part 15 compliance note anywhere...
     >> Can someone help my locate this?
     >> --
     >> 73s and thanks,
     >> Dave (NK7Z)
     >> https://www.nk7z.net
     >> Award Manager, 30MDG Grid Awards
     >> ARRL Technical Specialist
     >> ARRL Volunteer Examiner
     >> ARRL OOC for Oregon
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*Dave - WØLEV
*/Just Let Darwin Work/*
*/Just Think/*

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