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[RFI] Nasty RFI wiping out higher bands

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Subject: [RFI] Nasty RFI wiping out higher bands
From: "Paul Christensen" <w9ac@arrl.net>
Date: Tue, 16 Dec 2008 03:11:13 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
I posted this reply on QRP-L this morning.  I thought it would be equally
relevant here on this list.:

> When I complained to the FCC about the RFI from my Kenmore High
> Efficiency washer and dryer (see my post from a few months ago)  they
> responded by explaining that since I am the operator of the appliances
> I am the source of the interference and could not (read that would
> not) help me.

It's a tough pill to swallow, but pursuant to current Part 15 Rules, the
Commission was correct by their (in)action in your case.  Section 15.103(d)
states that such washing appliances are subject only to the general
provisions of Section 15.5 and 15.29, and are further "exempt from the
specific technical standards and other requirements contained in Part 15."

The operator of an 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 interference has been corrected.

You are the owner of the washer.  You must stop operating the washer if it
is causing harmful interference.

The real issue here is that Part 15 has not kept pace with the realities of
modern appliances.  The new wave of washing systems with direct-drive motors
generate enormous amounts of RFI.

In our home, nearly every major appliance runs from some form of digital
controlling device and/or switch-mode power supply.  And yet, Part 15 is
telling us that the manufacturers of common appliances are given special
dispensation from having to comply with technical standards set forth in
other sections of Part 15.   Ironically, the switch-mode power supply that
provides powering to the appliances may be non-exempt if sold and used on
its own.  But subject only to vague interpretation under Sec. 15.103(i), the
device is protected through exemption under the shield of the "appliance."

Then to add insult to injury, the preamble of 15.103 goes on state "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."  Well forgive me, but if the issue is important
enough for the Commission to make a "strong recommendation," then it seems
to me the issue should rise to a level of importance in which the
manufacturers should be compelled to conform to the technical standards of
non-exempted devices.

BPL is important, but in terms of priority as to what is adversely impacting
the population of amateur operators today, it is clearly the growing
bombardment of trash coming from Part 15-exempt and non-exempt devices.

Our spectrum protection activism should be focused on an overhaul of Part 15
rules, and should not be limited to BPL activities.  But reform in this area
does not occur when we call the FCC to file a complaint.  Reform requires a
grass-roots effort, led in part by a strong organization like the ARRL.

Paul, W9AC

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