[RFI] Switching Power Supply test Video

[Michael Coslo]

The antenna is a 96 foot doublet, fed with ladder line. It’s about 55 feet above ground, so about  52 feet directly above the Alinco. 

I also have a club switch mode supply, the MFJ4225 that I will make a test on soon. It won’t be as easy to check out, because the switching frequency isn’t adjustable. I might try showing it under different loads to watch where it shows up.

-73 de Mike N3LI -

> On Aug 16, 2016, at 9:56 AM, Bill Steffey NY9H <ny9h at arrl.net> wrote:
> 
> nice video Mike,
> 
> I missed what and where your antenna is located and how far , relative to the location of the Alinco PS.
> 
> bill/3
> 
> At 12:45 PM 8/7/2016, Michael Coslo wrote:
>> I have produced a video on my YouTube channel regarding testing of a Switching Power Supply to ascertain potential RF interference.  This particular test is of an Alinco DM-330MV and the radio is a Flex 6300. Note this is a test under normal conditions that an amateur might experience.  Enjoy.
>> 
>> https://www.youtube.com/watch?v=R8p5WUAriBo&feature=youtu.be
>> 
>> p.s. if anyone  knows of a wall wart type supply that has proven to be a problem, I would love the name in order to perform similar tests.
>> 
>> 
>> -73 de Mike N3LI -
>> 
>> _______________________________________________
>> RFI mailing list
>> RFI at contesting.com
>> http://lists.contesting.com/mailman/listinfo/rfi
>