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Re: [RFI] RV Converter Issue

To: MICHAEL ST ANGELO <mstangelo@comcast.net>
Subject: Re: [RFI] RV Converter Issue
From: David Eckhardt <davearea51a@gmail.com>
Date: Tue, 17 Dec 2019 00:44:30 +0000
List-post: <mailto:rfi@contesting.com>
BTW, it is not the least expensive unit.  I do not trust claims of a true
sinewave inverter for $50! !  Copper and iron required for the output
transformer at 300-watts can not be sourced responsibly for that price,
even in China.  If I remember, my inverter was 'around' $250.  But, it is
CLEAN.

I checked those at Harbor Freight in the $50 range that claimed to be clean
and pure sinewave before buying the referenced unit.  They were as dirty as
you might imagine and not massive enough to have a real copper and iron
transformer on the output at 120 vac.

Dave - WØLEV

On Tue, Dec 17, 2019 at 12:38 AM David Eckhardt <davearea51a@gmail.com>
wrote:

> It is a:
>
> GO POWER      <www.gpelectric.com>
> Carmanah
> 1-866 247-6527
> Power Inverter    300 watt DC to AC
> Model:  GP-SW300
>
> Since it is made in China, your mileage may vary.  However, mine is pretty
> clean.  If I frisk it within a couple of inches with a B-Dot probe (loop),
> I can find a few switching emissions, but pretty low.  Both the DC input
> and the AC output are pretty clean - they know how to do decoupling.  The
> output is transformer coupled at 60 Hz.  I may have gotten this from
> Amazon, but I do not remember - confidence on that statement is about 40%
> 😊   It is a true sinewave inverter.
>
> I took pictures of the label, but this group strips images from emails.
>
> On Mon, Dec 16, 2019 at 11:01 PM MICHAEL ST ANGELO <mstangelo@comcast.net>
> wrote:
>
>> Dave,
>>
>> Which brand inverter did you buy?
>>
>> Mike N2MS
>>
>> > On December 16, 2019 at 3:53 PM David Eckhardt <davearea51a@gmail.com>
>> wrote:
>> >
>> >
>> > I installed a 'True Sinewave' 300-watt inverter in our Airstream.  It
>> does
>> > not produce any objectionable RFI.  It would even pass the EU
>> > specifications for conducted harmonicds of 60/50 Hz.  However, when I
>> pass
>> > a loop of the RG-58 feedline around our solar panel, that couples CM
>> noise
>>
>> > Dave - WØLEV
>>
>
>
> --
>
> *Dave - WØLEV*
> *Just Let Darwin Work*
> *Just Think*
>


-- 

*Dave - WØLEV*
*Just Let Darwin Work*
*Just Think*
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