[CQ-Contest] RBN question

[Pete Smith N4ZR]

Sure, though I wonder how large an impact it would have.  Anything that 
results in a CW signal arriving at a Skimmer in a form that is so 
mangled that the algorithm can't copy the CW will result in a missed 
spot.  QRM can do that too.

73, Pete N4ZR

On 2/23/2025 2:14 AM, Jeff Blaine wrote:
> I was thinking of another variable - could the polar path introduce 
> more multipath or other effects and that may have contributed to a 
> lower skimmer report rate?
>
> I don't know about the skimmer's ability to decode in those conditions 
> but it seems like all the stations from that far east are hard to copy 
> here, at least using human ears.
>
> 73/jeff/ac0c
> alpha-charlie-zero-charlie
> www.ac0c.com
>
> On 2/22/2025 8:50 PM, Pete Smith N4ZR wrote:
>> I read this series of posts with some puzzlement.  It is simply not 
>> true that the CW Skimmer algorithms would (as implied) discriminate 
>> against some calls versus some others.  So long as transmissions by 
>> any given station meet the well-publicized criteria for being 
>> spotted, and they are heard by a given Skimmer, they will be spotted.
>>
>> 73, Pete N4ZR
>>
>> On 2/21/2025 10:27 AM, Mike Smith VE9AA wrote:
>>> I read this post a few times (and the replies).
>>>
>>> I am still not 100% sure if you're actually serious.but in any case, 
>>> UA9YBA
>>> is 9000kms from here (well into Asia just N. of Mongolia) whereas 
>>> HG5E is
>>> only 6000kms from here in EU.  I don't have any information on the 
>>> exact
>>> power output of UA9YBA nor his antenna system(s) or as one other astute
>>> poster already said, how many Q's were spent running vs. S&P-ing.  
>>> We also
>>> don't know if he did SO2V (or same band SO2R, which I have done 
>>> once). I
>>> could go looking but your post does not state his CW speed either.
>>> All things to consider!
>>>
>>>   He certainly would have less daylight to use for 20m prop to NA 
>>> (20 was not
>>> open all night, afaik), but OTOH, he may have 2 openings per day (LP 
>>> vs. SP)
>>> vs. your one (SP)
>>>
>>> Are you concerned that he may have bested you by aprox 23k pts and 
>>> that he
>>> was farther away from NA as well?
>>>
>>> That's never a good feeling but should push you to do something 
>>> different.
>>> You can't change your QTH (smile)
>>>
>>> BTW, you guys who are sending your calls twice in your CQ (or twice 
>>> when you
>>> are answering someone running-ugh) are wasting a lot of time. 
>>> Multiply the
>>> time it takes to send your call by 3000, 4000 or 5000 times. Do the 
>>> math
>>> .That's all time you could've used to do something else.
>>>
>>> My CQ is simply:
>>> TEST VE9AA
>>>
>>> ...and I seem to get spotted just fine.  I always answer runners by 
>>> sending
>>> my call once.  Normally they come right back.  If they need it again, I
>>> normally send it once again.  There's only so much time in 48hrs.
>>>
>>> GL
>>>
>>> (CU-all of a sudden!)
>>>
>>> Mike VE9AA  - NB
>>>
>>>
>>>
>>> Dear Experts,
>>>
>>> I created a quick statistics sheet on RBN figures of the ARRL DX CW 
>>> contest.
>>> I took 4  SOSB 20M stations: HG0Y, HG5E, TM4W and UA9YBA.
>>> Here is how many times they were spotted by RBN in North America:
>>> HG0Y:  14236
>>> HG5E:  16648
>>> TM4W:  16223
>>> UA9YBA: 4918
>>>
>>> According to 3830scores.com and contestonlinescore.com pages these 
>>> are the
>>> QSO numbers:
>>> HG0Y:   1005
>>> HG5E:    902
>>> TM4W:   1139
>>> UA9YBA:  967
>>>
>>> My question: how could it be that three stations were spotted by RBN 
>>> three
>>> times more than UA9YBA?
>>> I listened to UA9YBA at the end of the contest and his CQ was 
>>> absolutely
>>> correct: "CQ UA9YBA UA9YBA TEST".
>>>
>>> 73:
>>> Tibor
>>> HG5E / HA1AH
>>>
>>>
>>> Mike - Keswick Ridge, NB, Canada
>>>
>>>
>>>
>>>
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