Agreed, but the real issue is the ambiguity of 'may not'. It can be
interpreted as anything from 'shall not' or 'must not' to 'might not
(but might)'. It really should be clarified.
Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK
On 2019-11-01 13:01, Sykes, Bob wrote:
The devil is in the details (FCC Rules Part 15.5). Comments below in
[square brackets] are mine.
(1)This device may not cause harmful interference…. [*to licensed
devices*. Licensed devices are protected by the FCC Rules. The other
less obvious meaning of this part of the label statement is that a
Part 15 device operates at sufferance and compliance with the
technical standards does not relieve the equipment owner from
non-interference. It doesn’t matter if your product is 20dB below the
FCC limit. If it is interfering, it must cease.]
(2) This device must accept any interference received, including
interference that may cause undesired operation” [Part 15 devices
are offered no protection from interference (whether generated by
licensed devices or not). The FCC is only interested in protecting
communications, not product quality.]
-Bob Sykes
*From:* Richard Nute [mailto:ri...@ieee.org]
*Sent:* Thursday, October 31, 2019 4:24 PM
*To:* EMC-PSTC@LISTSERV.IEEE.ORG
*Subject:* [EXTERNAL] [PSES] FCC regulatory statements
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“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”
Hmm. So, if the device causes harmful interference, operation is
prohibited (1).
And, if the device accepts interference that causes undesired
operation, operation is prohibited (2).
A CFL causes undesirable interference with my radio. So, operation of
both the CFL and radio is prohibited.
Is my interpretation correct?
Best regards,
Rich
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