Hi Reino,
Thanks for the explanation. That makes sense. Appreciate the information. --Dennis NE6I From: Reino Talarmo via wsjt-devel <wsjt-devel@lists.sourceforge.net> Sent: Monday, January 29, 2024 10:24 PM To: 'WSJT software development' <wsjt-devel@lists.sourceforge.net> Cc: Reino Talarmo <reino.tala...@kolumbus.fi> Subject: Re: [wsjt-devel] Decoding Anomaly Hi Dennis, There may be something to improve in the hash table(s) management as in your example the first message CQ PJ5/SP9FIH was sent in full (it is a non-standard call, but that should not matter). Why the 10 bits hash was not updated into the hash table, but there is DP1POL instead for the 10 bits hash and at the same time for PJ5/SP9FIH the longer 22 bits hash it is correct. Of course PJ5/SP9FIN and DP1POL don’t collide at the 12 and 22 bits long hashes. Well, a simple possibility is that the 10 bits hash table is in alphabetic order and the hash values are not updated, but there are two callsigns for the same hash and DP1POL is the first found. Sri, I have no fact about the hash tables, but in my logic the CQ PJ/SP9FIH message should have ‘updated’ a linkage of all hash 10, 12 and 22 values for that callsign and ‘removed’ linkage to DP1POL at least for the 10 bits hash for the next messages. (By the way there are 10, 12 and 22 bits hashes also for SP9FIH in the case that were used and those don’t collide with DP1POL.) 73, Reino OH3mA From: Dennis Younker NE6I via wsjt-devel [mailto:wsjt-devel@lists.sourceforge.net] Sent: Tuesday, January 30, 2024 1:59 AM To: 'WSJT software development' <wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> > Cc: Dennis Younker NE6I <n...@cox.net <mailto:n...@cox.net> > Subject: Re: [wsjt-devel] Decoding Anomaly Thanks, what would be special about PJ5/SP9FIH in this case? I have not seen this with others using “portable designators.” --Dennis NE6I From: Jim Reisert AD1C via wsjt-devel <wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> > Sent: Monday, January 29, 2024 3:09 PM To: WSJT software development <wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> > Cc: Jim Reisert AD1C <jjreis...@alum.mit.edu <mailto:jjreis...@alum.mit.edu> > Subject: Re: [wsjt-devel] Decoding Anomaly It's a callsign hash collision. DP1POL has not been operating on those frequencies. On Mon, Jan 29, 2024 at 4:07 PM V. Scott Moore via wsjt-devel <wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> > wrote: I saw similar decodes. I attributed it to two stations on the same frequency. The PJ5 was very strong here and when multi-streaming his/her signal came down and revealed the less powerful (but still +10 here) Antarctic station. scott W1SSN On Jan 29, 2024, at 17:47, Carl Moreschi via wsjt-devel <wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> > wrote: I just saw exactly the same things on 17 meters. Carl Moreschi N4PY 127 River Moss Way Hertford, NC 27944 www.n4py.com <http://www.n4py.com> On 1/29/2024 5:31 PM, Dennis Younker NE6I via wsjt-devel wrote: Wondering if anyone else is seeing this issue. PJ5/SP9FIH is operating F/H. When he is transmitting one stream, his call is displayed correctly in the Rx Frequency window. When he transmits two streams, the call sign DP1POL is displayed instead. See below for an example. --Dennis NE6I 222830 -2 -0.4 492 ~ CQ PJ5/SP9FIH Saba & St. Eustatius 222900 -4 -0.4 492 ~ N5HD <PJ5/SP9FIH> +02 222930 0 -0.4 492 ~ N5HD RR73; EA7QL <DP1POL> -04 223000 -4 -0.4 492 ~ EA7QL <PJ5/SP9FIH> -05 223030 -2 -0.4 492 ~ EA7QL RR73; LU7EML <DP1POL> -12 _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/wsjt-devel _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/wsjt-devel “Got time to breath, got time for music” - Brisco Darling _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/wsjt-devel -- Jim Reisert AD1C, <jjreis...@alum.mit.edu <mailto:jjreis...@alum.mit.edu> >, https://ad1c.us
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