20 years ago, they didn't contain "inverters". All one had to deal with
was the spark.
Dave - WØLEV
On Sat, Jul 16, 2022 at 7:06 PM Bob Turner <n2scj-lists@outlook.com> wrote:
> I have an EU3000is. Purchased about 20 years ago. It's both RF and AF
> quiet. I base this upon non-scientific observations. It went to about
> 8 Field Days (HF) and 15 VHF Mountaintopping events (VHF - Microwave).
> They were both multi-operator events and had more than one receiver running
> at a time. No one noticed anything.
>
> The SMPS (converter) in my Travel Trailer does make RFI. Fortunately it
> falls off quickly with distance.
>
> Bob
>
> -----Original Message-----
> From: RFI [mailto:rfi-bounces+n2scj-lists=outlook.com@contesting.com] On
> Behalf Of Dave (NK7Z)
> Sent: Saturday, July 16, 2022 2:30 PM
> To: rfi@contesting.com
> Subject: Re: [RFI] Portable Generator Noise
>
> Hi,
> Anyone here using a Honda eu3000is? Is it RFI quiet?
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
>
> On 7/16/22 10:56, Steve Dyer via RFI wrote:
> > Most inexpensive inverter gens are cheap for a reason.
> > The Honda 2000 series is (still?) one of the few quiet inverters I
> > have been around during HF ops and the cost reflects it.
> > 73,
> > Steve
> >
> > On 7/16/2022 10:19, David Eckhardt wrote:
> >> " 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
> >>>
> >>> _______________________________________________
> >>> RFI mailing list
> >>> RFI@contesting.com
> >>> http://lists.contesting.com/mailman/listinfo/rfi
> >>>
> >>
> >
> > _______________________________________________
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--
*Dave - WØLEV*
*Just Let Darwin Work*
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