[Skimmertalk] Z60A not being copied by CT1BOH-#

[donovanf at starpower.net]

Hi Pete, 


I installed the latest patt3ch.lot immediately, 


My CW Skimmer Server has never spotted Z60A 
My RTTY Skimmer Server has spotted Z60A many times 


K3LR CW Skimmer (not Skimmer Server), has spotted Z60A many times 


But this is not a crisis, there are plenty of other Z60A CW skimmer spots. 


73 
Frank 
W3LPL 

----- Original Message -----

From: "N4ZR" <n4zr at comcast.net> 
To: "Lee Sawkins" <ve7cc at shaw.ca>, skimmertalk at contesting.com 
Sent: Sunday, February 4, 2018 2:54:56 PM 
Subject: Re: [Skimmertalk] Z60A not being copied by CT1BOH-# 

For the record(I posted this earlier, I believe), the pre-existing 
patt3ch.lst file did not contain any Z6 patterns. We added one as soon 
as we became aware of the problem, but propagation of the change to 
individual nodes depends on node-ops responding to a prompt from the 
Aggregator and downloading the new pattern file from the "mother ship." 

73, Pete N4ZR 
Check out the Reverse Beacon Network 
at <http://reversebeacon.net>, now 
spotting RTTY activity worldwide. 
For spots, please use your favorite 
"retail" DX cluster. 

On 2/2/2018 4:51 PM, Lee Sawkins wrote: 
> I didn't realize that skimserver was smart enough to know what the ITU was doing. I thought it used the Patt3Ch.lst which includes Z6.One thing I have found is that my RP skimmers don't spot signals that overload it. Anything around 60 dB or greater s/n may not be spotted. This includes signals like KH7XS VE6WZ W6KH and of course some locals. They may get spotted on harmonics, but not on their fundamental freqs. While this may not apply in the Z60A cases, it is something to be aware of. I am anxiously waiting for the results of the testing by the DL group that N6TV mentioned. They were working on an improvement in dynamic range for the RPLee VE7CC 
> ----- Original Message ----- 
> From: ct1boh <ct1boh at gmail.com> 
> To: N4ZR <n4zr at comcast.net> 
> Cc: Reflector Skimmertalk <skimmertalk at contesting.com> 
> Sent: Fri, 02 Feb 2018 14:20:40 -0700 (MST) 
> Subject: Re: [Skimmertalk] Z60A not being copied by CT1BOH-# 
> 
> Got this from a source... 
> “skimserver spots only prefix blocks assigned by ITU”... 
> 
> Enviado do meu iPhone 
> 
> No dia 02/02/2018, às 20:06, N4ZR <n4zr at comcast.net> escreveu: 
> 
>> For the RBN team. I can say that this is not a known problem to us, with either Skimmer or Skimmer Server software. However, we are not knowledgeable in detail about the working of Alex's software, so he would be the best one to respond definitively to this. 
>> 
>> 73, Pete N4ZR 
>> Check out the Reverse Beacon Network 
>> at <http://reversebeacon.net>, now 
>> spotting RTTY activity worldwide. 
>> For spots, please use your favorite 
>> "retail" DX cluster. 
>> 
>>> On 2/2/2018 1:45 PM, dd5xx at web.de wrote: 
>>> Hello José, 
>>> 
>>> I am not sure what exactly happens but I also experienced following phenomenon ==> callsigns containing a zero 0 are not recognized as well. We did excessive tests over months, various time periods, various stations, various power levels and all kind of sort you can imagine of. The results showed very clear that our club station callsign XX0X is not recognized as good as when I send another callsign in CW. That happens to "CQ CQ CQ de XX0X XX0X XX0X" but also to "TEST TEST TEST DE XX0X XX0X XX0X" calls. This issue still exists and I can reproduce it. 
>>> 
>>> I have no clue it is just the "zero" causing the problem or a certain combination with it. In our case, our callsign has the character "A" after the zero, so it ends in 0A. Maybe others can provide more information if this is a known issue. 
>>> 
>>> 73 de DD5XX 
>>> Saki 
>>> 
>>> Gesendet: Freitag, 02. Februar 2018 um 18:43 Uhr 
>>> Von: "José Nunes CT1BOH" <ct1boh at gmail.com> 
>>> An: skimmertalk at contesting.com 
>>> Betreff: [Skimmertalk] Z60A not being copied by CT1BOH-# 
>>> I have a skimmer going at my QTH 
>>> http://www.reversebeacon.net/dxsd1/dxsd1.php?f=0&t=de&c=CT1BOH 
>>> 
>>> I have + Z6#@ in pattern file in aggregator. 
>>> Z60A is loud and clear, but my skimmer never "skims" Z60A 
>>> 
>>> It seems this is not only my problem. Skimmer spots for Z60A are very few. 
>>> 
>>> First it seemed that only skimmer stations copy Z60A and the problem is 
>>> with skimmer-server stations, but no sure about that. 
>>> 
>>> Any hint about what problem may be? 
>>> 
>>> 73 
>>> 
>>> -- 
>>> José Nunes 
>>> CONTEST CT1BOH - http://www.qsl.net/ct1boh[http://www.qsl.net/ct1boh] 
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