[RFI] Keurig Coffee Maker as seen by a Spectrum analyzer...

[Dave (NK7Z)]

Hi Jeff,

That is why I said it was not scientific...  If you look at the photo of 
the test setup, you will see the sampling antenna, that is why I added 
the photo of the test setup, to show how it was sampled...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
I never learned from a man who agreed with me. (HeinLein)

On 7/30/24 01:59, Jeff Blaine wrote:
> Dave,
> 
> I agree - any excuse to use a SA is a good one (the VNA falls into that 
> same category here).
> 
> For your page, what would be helpful is to understand how you were 
> sampling the gadget.  The reason i ask is that just about anything 
> modern has a SPS and that is going to make a detectable RFI pattern. 
> What's most important in my view is how strong that radiation is.  If a 
> 1" bit of wire on the SA input at 10' gives a NF+60 dB print, then 
> that's trouble.  But if you had to make 20 turns of wire around the 
> power cable of the device and use the SA preamp to get the same 60 dB 
> SNR, then that's a different story. Curious.
> 
> 73/jeff/ac0c
> alpha-charlie-zero-charlie
> www.ac0c.com
> 
> On 7/30/2024 12:56 PM, Dave (NK7Z) wrote:
>> Hello,
>>
>> As promised, here is the link to my new Keurig Coffee Maker Classic, 
>> as seen by my new spectrum analyzer.  I have been itching for a chance 
>> to use this baby...
>>
>> https://www.nk7z.net/rfi-snapshots/major-appliance-rfi/
>>
>> Scroll to the bottom of the page, there you will see the Keurig 
>> on/off, and a shot of the test bed.  It is not scientific, nor was it 
>> intended to be...  Just an excuse to use the new SA...  :)
>>
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