[Elecraft] K3 spurs

[K9MA]

I've seen a K3 generate spurs when the power supply was overloaded, and 
went into current limit.

73,

Scott  K9MA


On 5/15/2018 15:38, Clay Autery wrote:
> I don't know where your antenna is located, how your feedline runs, or 
> where your dummy load is located, but....
>
> You have some kind of switch mode power supply or similar device that 
> is coupling with your antenna and/or feedline.
>
> That the signal dissipates some when on the dummy load is a clue to 
> where the source might be...
>
> I'd be almost positive it is external to the K3...
>
> Are you powering the K3 with a SM power supply?
>
>
> 73,
>
> Clay, KY5G
>
>
> On 05/15/18 09:22, Roger D Johnson wrote:
>> I was watching 6m yesterday and noticed several spurs. They were 
>> spaced 39kHz
>> apart. Amplitude dropped but didn't disappear when switched to dummy 
>> load.
>>
>> I have the K3 with new synthesizer boards. Just wondering if anyone 
>> else seeing
>> something similar. IOW is it something in the K3 or external?
>>
>> 73, Roger
>>
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-- 
Scott  K9MA

k9ma at sdellington.us