[Elecraft] K3 Spur on 160??!!

[Mike Furrey]

After reading everyone's posts (THANKS!) and doing a bit more digging, I found this on the reverse beacon web page:http://content.reversebeacon.net/sites/reversebeacon.net/files/users/user3/The%20RBN%20and%20You.pdf
About half way down, "Images from mis-adjusted receivers – two spots, same call, different frequencies" ... the whole thing is a good read.
So I have concluded the K3 is just fine. 100 watts to the inverted L netted me 615 Qs in the contest.
73, Mike WA5POK 

    On Tuesday, February 2, 2016 6:51 AM, "Joe Subich, W4TV" <lists at subich.com> wrote:
 

 
In this case it looks as if the AC0C has a simple SDR with an I/Q
balance problem.  In both cases reported the "spur" is equal distant
on 1,842.65 KHz.

73,

  ... Joe, W4TV


On 2/2/2016 12:46 AM, Wayne Burdick wrote:
> "Milt -- N5IA" <n5ia at zia-connection.com> wrote:
>
>> Mike,
>>
>>  From my remote station which was operated by KY7M in the contest, I noticed the same thing from the AC0C RBN box.
>>
>> ....BUT, I am sure the problem is with the AC0C receiver and NOT our K3 transmitters.
>
> This could happen if the receiver in use was subjected to a signal beyond its usable dynamic range. For example, a very strong carrier could mix with another strong station's CW to create "ghost" signals (third-order intermod) for the duration of the carrier. Another possibility is demodulating a strong signal due to a spur in the receiver's local oscillator. Such scenarios are much more likely during heavy contest activity.
>
> Wayne
> N6KR
>

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