[RFI] EMI-Free Vehicle Inverters

[David Eckhardt]

I know you're looking for a 1 kW unit, but I have the following I use
camping and I must admit its pretty quiet, RFI wise:


https://www.amazon.com/Go-Power-GP-SW300-12-300-Watt-Inverter/dp/B001539BCE/ref=sr_1_29?keywords=true+sine+wave+power+inverter&qid=1585068577&sr=8-29

W0LEV



On Tue, Mar 24, 2020 at 11:33 AM David Klinect via RFI <rfi at contesting.com>
wrote:

> Thanks, Jim.  Not looking at any specific ham band..............would
> prefer that It be EMI-Free on all (or as much as possible) of the HF
> range.  Always appreciate your insights into these matters.......as well as
> your write-ups and tutorials.
>
>
>
> Dave KA8MHW
>
> ------------------------------------------
>
> On 3/23/2020 12:36 PM, David Eckhardt wrote:
>
> > How much power (watts) are you shopping for?  I presume you are going
> from
>
> > a 12 vdc system to a 120 vac/60 Hz system?
>
>
>
> And on what band(s) does it need to be quiet?  Page 13 of the link below
>
> details what we had to do to a GOOD unit to make it quiet enough to hear
>
> weak signals on a Hamstick 3 ft away. The little clamps with no winding
>
> (with ferrites, this counts as a single turn) are for VHF; those with
>
> multiple turns are for the HF bands we were using mobile -- 15,20, 40.
>
> Except for those single-turn clamps, all the ferrites are Fair-Rite #31.
>
>
>
> http://k9yc.com/KillingReceiveNoise.pdf
>
>
>
> BTW -- we were unable to kill noise from a bigger unit in the same
>
> product series of "pure sine-wave inverters."
>
>
> 73, Jim K9YC
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-- 
*Dave - WØLEV*
*Just Let Darwin Work*
*Just Think*