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Re: [RFI] Portable Generator Noise

To: Mike Fatchett W0MU <w0mu@w0mu.com>
Subject: Re: [RFI] Portable Generator Noise
From: David Eckhardt <davearea51a@gmail.com>
Date: Sat, 16 Jul 2022 17:19:08 +0000
List-post: <mailto:rfi@contesting.com>
" WEN 56235i Super Quiet 2350-Watt Portable Inverter Generator with Fuel
Shut Off, CARB Compliant, Ultra Lightweight, Black"

The problem is in this statement.  Your "generator" is not just a
generator.  It is a "Portable *Inverter* Generator".  Likely, the generator
by itself is relatively quiet.  But the inverter is a switch mode power
supply.  ALL SMPSs are RFI sources!  You will find it extremely difficult
to tame this unit wrt RFI.

Don't stress over "grounding".  It will have minimal to no effect.

Dave - WØLEV

On Sat, Jul 16, 2022 at 5:30 AM Mike Fatchett W0MU <w0mu@w0mu.com> wrote:

> I purchased a small quiet off brand 1900 watt continuous generator with
> eco mode.  It generates a lot of rfi.  I used it at a POTA activation
> last weekend and it was tolerable by moving the antenna as far away from
> the generator as possible.   Putting it under heavier load did not seem
> to make any difference nor did decreasing the load.
>
> There is a ground lug on the unit but the forest service frowns on
> people pounding in ground rods.  Is there a more portable solution for a
> ground.  I have my doubts that it would change anything.  I should try
> hooking it up here at home and find out.
>
>
> WEN 56235i Super Quiet 2350-Watt Portable Inverter Generator with Fuel
> Shut Off, CARB Compliant, Ultra Lightweight, Black
>
>
> I did have some big clamp ons and I put them on the extension cord and
> that seemed to help some.  I could only get 2 to 3 turns through the
> clamp ons and I had two.  Maybe I need far more turns?  I did not the
> cabling handy to hookup directly to the car battery to see if the
> extension cord was the radiator or if it was all coming out of the
> generator.
>
> Has anyone had any luck quieting them down?
>
> W0MU
>
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>


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