[RFI] Portable Generator Noise

[Mike Fatchett W0MU]

Thanks Jim!

I figured you had been down this road before.

On 7/16/2022 1:57 AM, Jim Brown wrote:
> On page 23 of this link is a filter that I designed and W6GJB built 
> for our HF county expeditions for 7QP and CQP. It's designed to be 
> effective from 80M to 10M. It was added to the ARRL Handbook several 
> years ago.
>
> http://k9yc.com/RFI-Ham.pdf
>
> For 6M and above, I suggest following the recommendations for 
> transmitting chokes wound with RG8-size power cables.
>
> http://k9yc.com/ChokesVHF.pdf
>
> 73, Jim K9YC
>
> On 7/15/2022 10:29 PM, Mike Fatchett W0MU 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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>
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