[RFI] Inverters?

[Grant Saviers]

This is a great testing topic for ARRL Labs.  Honda vs Yamaha vs Harbor 
Freight inverter gens.  1, 2, & 3kw. versions.

 From some anecdotal data and a deep dive into the HF 3kw electronics 
the results may be surprising.

Always put a K9YC design generator CM choke on the line too.  I do that 
then a commercial RFI line filter for more than CM suppression.

Grant KZ1W

On 9/20/2020 06:46, Dave Cole wrote:
> The best test is to bring a portable shortwave radio, and listen before 
> you buy...  Most places, have a demo generator set up.Make it clear to 
> the vendor that if the unit is generating RFI you will be returning it, 
> with the expectation of a full refund.
> 
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
> 
> On 9/19/20 9:23 PM, Warren Wolff via RFI wrote:
>>    I am considering the purchase of an emergency back-upgenerator.  
>> For the first time, I have encountered unitstagged as “inverters”.  
>> Does this mean that some systemsare AC generators while the 
>> “Inverter-types” generateDC and then convert it to AC?    “Inverter” 
>> immediatelyprecipitates the worry of RFI.  Comments, please.
>> WarrenW7WY
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