CW decoder by WD6CNF

User avatar
VK4TS
Forum Diehard
Posts: 426
Joined: Tue Dec 18, 2012 6:14 am
Contact:

Re: CW decoder by WD6CNF

Post by VK4TS » Fri Apr 19, 2013 5:24 pm

I assume you are referring to Skimmers ability to decode CQ Calls and therefore end up on the Reverse Beacon network.

The optimum is to call in a sequence of at least cq or test and callsign twice - do not vary the speed (some programmes do this)

CQ CQ VK2FAD VK2FAD or CQ TEST VK2FAD VK2FAD will get the best results . During Contests on quiet bands we use a long CQ CQ VK4## VK4## repeated two times finally TEST and that usually takes care of new Skimmer spots
Trent VK4TS
PO Box 275 Mooloolaba 4557
Mobile 0408 497 550 vk4ts@wia.org.au

VK2FAK
Forum Diehard
Posts: 919
Joined: Thu Apr 15, 2010 6:28 pm

Re: CW decoder by WD6CNF

Post by VK2FAK » Fri Apr 19, 2013 7:18 pm

Hi all....

Thats what I wanted to know...thanks for that..

I knew they had levels and a top level of a callsign file, if you were not in that you don't get spotted.......but I think you have answered the question...

Now I will pretend I was never here, I did not see anything, did not read the thread...what thread...


John
Regards

John Vk2FAK

User avatar
VK4TS
Forum Diehard
Posts: 426
Joined: Tue Dec 18, 2012 6:14 am
Contact:

Re: CW decoder by WD6CNF

Post by VK4TS » Sat Apr 20, 2013 8:52 am

What skimmers use is the SCP file http://www.supercheckpartial.com/ which is an aggregation of active contestor's callsigns -
The Super Check Partial database files provide a list of callsigns used by active contesters. The data comes from Cabrillo logs contributed by contesters themselves. Contributed logs from the past 24 months are used to create the database. These logs are combined and filtered so that they result in a fairly good (but not perfect) list. The files do not contain any QSO data, such as state, CQ zone, Maidenhead Grid Locator, etc.
So if you work several of the USA contest stations in the WPX CW contest your callsign will be added to the SCP file. This file is used by most contesting log files as a cross check - a small window will show the most likely calls - so say in a pileup you hear KE??? When you type KE into the logger the variations of KE will be in the window - as you add more to the callsign the possible are narrowed down.

Monitoring of the RBN and calling CQ will show where you are being received and often it does surprise...
Trent VK4TS
PO Box 275 Mooloolaba 4557
Mobile 0408 497 550 vk4ts@wia.org.au

User avatar
VK1DA
Forum Diehard
Posts: 233
Joined: Sat Jul 22, 2006 1:18 pm
Location: Canberra
Contact:

Re: CW decoder by WD6CNF

Post by VK1DA » Sat Apr 20, 2013 12:27 pm

My QRP sota sig was spotted by a local skimmer and reported on the rbn site. That in turn was forwarded to the SOTAwatch site. So within a minute if calling cq I saw a new spot on sotawatch telling me I was heard. I understand that system does not identify callsigns in a qso, so you have to call cq or test to be spotted.




Andrew Davis VK1DA & VK2UH
Sent using Tapatalk
Andrew Davis VK1DA Canberra, VK2UH Yass
http://vkfaq.ampr.org
http://vk1da.net
http://vk9na.com

Post Reply