[RFI] LG 12,000 BTU Model Advice

Thu Feb 2 13:24:27 EST 2023

Great advice and pretty obvious.

When we had to replace or frig, I took along a battery powered radio that
covered the EU AM BCB through our US FM BCB.  Great intentions.  But how
many sales outlets actually have the appliances plugged in and capable of
normal operation?  Virtually none.  So, I let my wife make the choice with
my fingers tightly crossed and my lips sealed to the point of turning
blue.  You get the point.  Once installed in the home, I had to make and
install install a rather aggressive CMC on the power cord which took care
of 98% of the RFI.  Fortunately, I had the material to do this.  Yes,
appliances are exempt from RFI requirements.

Dave - WØLEV

On Thu, Feb 2, 2023 at 3:57 PM James Gordon Beattie Jr <w2ttt at att.net>
wrote:

> All,
> Thanks for the good advice... the issue is that most of these places just
> display stacks of boxes and have no actual displays.   I have a TH-F6A and
> a small AM/SW receiver, so I can do some detective work if there are units
> to see.
>
> Bill,
> WRT existing offending products on the market, fret not!  Time will heal
> this if the law and regulations go.in the right direction.
>
> Well I am old enough to remembrr the days before the Goldwater Act that
> placed some interference immunity requirements on TVs and radios.  Before
> then it was purely a "consumer right/ ham wrong" world.  Over time things
> got better as old receivers went by the wayside and new ones came online.
> This will happen with all sorts ofbthings goong forward.
>
> The other element was the advent of cable and satellite TV.  That helped,
> though there were cases where their installations were problematic to
> hams.  I can even recall a situation where 150 feet from my house, a
> neighbor had computer speakers somehow demodulating my 10W 2m FM signal.
> In that case I made it clear that their $10 computer speakers were at fault
> and they got better speakers.
>
> Buckle up!  It's going to be a fun ride as it has been for me since I was
> 5 years old with a crystal set.  :-)
>
> 73,
> J. Gordon "Gordie" Beattie, Jr., W2TTT
> 201.314.6964
> W2TTT at ATT.NET
> Gordon.BeattieJr at VIAVISolutions.com
>
>
> Get On The Air!
>
> ________________________________
> From: RFI <rfi-bounces+w2ttt=att.net at contesting.com> on behalf of Dave
> (NK7Z) <dave at nk7z.net>
> Sent: Thursday, February 2, 2023 9:55:28 AM
> To: ny9h at arrl.net <ny9h at arrl.net>; rfi at contesting.com <rfi at contesting.com>
> Subject: Re: [RFI] LG 12,000 BTU Model Advice
>
> Bill,
>
> Money does tend to drive things, however the ARRL has made great
> progress, in getting some items corrected, despite the lobbying that I
> am sure goes on with regards to this sort of thing.
>
> It is a slow, careful, fight, but one worth entering, so bravo to the
> ARRL for what they are doing on the RFI front.  It would be nice if the
> FCC did more, but they too have limited funds, like the ARRL.
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
>
> On 2/2/23 06:25, bill steffey ny9h wrote:
> > I imagine that the "appliance" lobby has many congressmen on their
> > payroll, compared to our washington efforts. Too bad it will be too late
> > when the FCC changes that "exemption" due to complaints from someone
> > more influential than us.  IE public service, aircraft,,
> >
> > On 2/2/2023 9:07 AM, Dave (NK7Z) wrote:
> >> Morning Ed,
> >>
> >> Why not create an item, appliance, device reporting web page on the
> >> ARRL site.  Force the user to fill it out completely in order to
> >> submit a report.  Let the users know up front that you won't be able
> >> to get to all the items, and you will contact them if you need more
> >> info.  Then you could cherry pick the items you choose to deal with.
> >> That wound also help in standardizing your input from the masses.
> >>
> >> 73, and thanks,
> >> Dave (NK7Z)
> >> https://www.nk7z.net
> >> ARRL Volunteer Examiner
> >> ARRL Technical Specialist, RFI
> >> ARRL Asst. Director, NW Division, Technical Resources
> >>
> >> On 2/2/23 05:49, Hare, Ed, W1RFI wrote:
> >>> We are seeing a greater and greater trend to efficiency in all
> >>> products, so pulse-width-controlled motors, switching supplies and
> >>> inverters are becoming more prolific.
> >>>
> >>> This could be especially problematic in the US, because under FCC
> >>> Part 15 rules, what FCC designates as "appliances" are categorically
> >>> exempt from specific emissions limits.  The manufacturer is only
> >>> vaguely required to use "good engineering practice" in its design.
> >>>
> >>> Unfortunately, there are thousands of appliances, to ARRL can't go
> >>> out and buy one of each to test.  We rely on reports, but even when
> >>> there is interference, few of the reports we receive contain enough
> >>> specifics to identify products -- appliance or other -- that are
> >>> specific problems.
> >>>
> >>> And, of course, amateurs don't contact us to tell us that they are
> >>> not receiving interference from their neighbor's home appliances, so
> >>> we have no idea about the good guys.
> >>>
> >>> Ed, W1RFI
> >>> ARRL Lab
> >>>
> >>>
> >>> ________________________________
> >>> From: RFI <rfi-bounces+w1rfi=arrl.org at contesting.com> on behalf of
> >>> Wes Stewart via RFI <rfi at contesting.com>
> >>> Sent: Thursday, February 2, 2023 8:27 AM
> >>> To: rfi at contesting.com <rfi at contesting.com>; James Gordon Beattie Jr
> >>> <w2ttt at att.net>
> >>> Subject: Re: [RFI] LG 12,000 BTU Model Advice
> >>>
> >>> As I suspected.  From the LG website: "*Inverter Technology is a key
> >>> attribute of LG’s new room air conditioners. It is used in
> >>> conjunction with a variable-speed compressor and adjusts the
> >>> compressor motor speed to regulate temperature. "
> >>> If you are okay with the current model, I would put in another one.
> >>> The efficiency difference in percentage sounds like a lot, but from a
> >>> power consumption standpoint at this size is immaterial.
> >>>
> >>> I went through this agony a couple of months ago when shopping to a
> >>> whole house, roof-mounted, packaged heat pump.  The latest trend is
> >>> to use a Bosch which has an inverter driven variable-speed compressor
> >>> and variable-speed condenser fan, plus an ECM blower.  The option was
> >>> another Trane/American Standard with a two-speed compressor, single
> >>> speed condenser fan and an ECM blower.
> >>> I did not have objectionable noise from the ECM, but my antennas are
> >>> >100 feet from the house.  I could not get an answer about the rfi
> >>> potential of the Bosch from any source, including here, so took the
> >>> safe route.
> >>> Wes  N7WS
> >>>
> >>>
> >>>
> >>>      On Wednesday, February 1, 2023 at 10:28:40 PM MST, James Gordon
> >>> Beattie Jr <w2ttt at att.net> wrote:
> >>>
> >>>   Hi Folks!
> >>>
> >>> I have an LG LW1222ERSM 12,000 BTU air conditioner that sadly needs
> >>> to be replaced.
> >>> The dimensions are 15x24 going through a framed hole in the wall
> >>> ofbthec10x16 foot ham shack.  This somewhat constrains replacement
> >>> choices.
> >>>
> >>> I noted that I could buy the same model or an LG LW1222IVSM which is
> >>> a "dual inverter" model.  I'm not sure of the benefits in buying this
> >>> inverter model, but I am a bit concerned over the noise potential of
> >>> the inverters.
> >>>
> >>> Does anyone have experience with this model or another LG inverter
> >>> model?
> >>>
> >>> Up to now, I've had no noise issues with the standard model, but
> >>> since this in the ham shack, I figured it might be good to ask. Also,
> >>> the outdoor meter panel is 20 feet away and the indoor ham shack
> >>> subpanel is 10 feet away.  Power from the utility transformer is
> >>> aerial and 160 feet away.  The air conditioner is on a dedicated 20 A
> >>> 115 VAC breaker from the ham shack  subpanel
> >>>
> >>> Thoughts anyone?
> >>>
> >>> 73,
> >>> J. Gordon "Gordie" Beattie, Jr., W2TTT
> >>> 201.314.6964
> >>> W2TTT at ATT.NET
> >>> Gordon.BeattieJr at VIAVISolutions.com
> >>>
> >>>
> >>> Get On The Air!
> >>>
> >>> _______________________________________________
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-- 
*Dave - WØLEV*