[Skimmertalk] RBN spots analyses tool as signal quality checker

[Tom Berry]

Oh OK igor,    I only had one skimmer spotting me on different freq..
You had a good signal into NC on 40 CW by the way.

73 Tom AA4VV

On 2/27/2011 3:43 PM, Igor Sokolov wrote:
> Tom, in case of R3ZZ all the skimmers show similar picture. Besides I 
> myself heard R3ZZ on at least 3 different frequencies aprox 1 khz up 
> and down the main frequency. These ghost signals were some 30 db down 
> the main signal.
>
> 73, Igor UA9CDC
> ----- Original Message ----- From: "Tom Berry" <tberry1 at triad.rr.com>
> To: <skimmertalk at contesting.com>
> Sent: Monday, February 28, 2011 1:38 AM
> Subject: Re: [Skimmertalk] RBN spots analyses tool as signal quality 
> checker
>
>
>> Igor,   A VE6 had me spotted all over 40 meters and I am pretty sure I
>> was not overdriving my amp.
>>
>> 73 Tom AA4VV
>>
>>
>> On 2/27/2011 3:30 PM, Igor Sokolov wrote:
>>> I was operating in UBA part time and ran into interesting feature of 
>>> RBN
>>> spot analyses tool.
>>> Check 26th of Feb OL5Q. The call sign in question is R3ZZ who was 
>>> single
>>> band 40m entry.
>>> Analyses of SNR and frequency shows that his signal for some time was
>>> observable on several frequencies at the same time. Besides these 
>>> multiple
>>> signals correlate very well with the appearance of the second harmonic.
>>> Similar picture is found on other skimmers (UA9CLB, DK9IP)
>>> Interestingly the problem is not permanent. It appears that in the 
>>> beginning
>>> of the contest his signal was OK. Then he probably decided to 
>>> overdrive his
>>> linear to get more room on the band. Anyway this small discovery of 
>>> mine
>>> shows how useful this new beta tool can be.
>>>
>>> 73, Igor UA9CDC
>>>
>>>
>>>
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>