[Elecraft] QST Review of KSYN3A synth has erroneous TX phase noise plot

[Ken Chandler]

Thanks Wayne, Appreciated.


Ken.. G0ORH 

Sent from my iPad


> On 20 Oct 2015, at 15:35, Wayne Burdick <n6kr at elecraft.com> wrote:
> 
> Hi Ken,
> 
> When they issue a revised Figure 10 for the article, we'll put it on our website.
> 
> 73,
> Wayne
> N6KR
> 
> 
> 
>> On Oct 20, 2015, at 12:07 AM, Ken Chandler <G0ORH at sky.com> wrote:
>> 
>> Hello Wayne
>> Would like to view both ARRL (old v new) synth plots side by side if possible! 
>> Don't subscribe to ARRL, so not privy to that info!!
>> 
>> Ken.. G0ORH - M3i
>> 
>> Sent from my iPad
>> 
>> 
>>> On 20 Oct 2015, at 01:03, Wayne Burdick <n6kr at elecraft.com> wrote:
>>> 
>>> Hi all,
>>> 
>>> You may have noticed that QST recently reviewed the K3's performance before/after swapping in a new KSYN3A synthesizer. While the review text was accurate (and complimentary), there was a significant error in the KSYN3A TX phase noise plot (Figure 10). This error made it appear as if the original synthesizer had lower (better) wide-spaced phase noise than the KSYN3A (starting where the plot lines cross), which is not the case. 
>>> 
>>> We should have caught this ourselves before the article went to print. We greatly appreciated the League's efforts to determine the source of error -- equipment setup -- and re-test. The digital-print version of QST will be corrected, and a correction will also appear in the December QST.
>>> 
>>> The ARRL sent us the revised TX phase noise plot for the K3+KSYN3A that they tested. You can see it here:
>>> 
>>> http://www.elecraft.com/specs/Joel's%20K3%2010-19-15%2020%20meter%20phase%20noise.BMP
>>> 
>>> In addition they're testing a K3S. Its TX phase noise plot looks as good or slightly better:
>>> 
>>> http://www.elecraft.com/specs/K3S%2010-19-15%20%2020%20meter%20phase%20noise.BMP
> 
>