I have been following this thread, and offer my experience with the "? a2”
decode
At 230213_153645 is my last Tx - probably due the F/H turning off my Tx Enable
after 4 or 5 transmissions
At 230213_154115, I hear JT Alert notify me that a callsign I am chasing (3Y0J)
has appeared and I receive the line indicating to me that 3Y0J has replied;
transmitted from Freq 450 with -23dB signal and containing the cryptic “? a2”
at the end
At 230213_154145, I Enable Tx from Tx 1
At 230213_154215, I Tx again from Tx 1
At 230213_154245, I have realized that I should be giving 3Y0J a report so I
click Tx 3 and send him R-23…notice here that my Freq has been changed from
1852 to 750, ostensibly by 3Y0J (or by WSJT-X ?)
I transmit two more times, and then consider myself to be one of the lucky ones
who has finally had a Bouvet QSO, thinking so because my freq has been changed
which is usually what happens when the Fox recognizes the Hound….
It wasn’t until later on 230213 that I realized that the Fox was transmitting
on Odd time instead of the usual Even time…then I read about the sequencing
problems the 3Y0J team had been having so am thinking that the reply I received
from Fox was legitimate.
I’ll just leave this here…….
From my All.txt file, here are my results with offsets by me to enhance clarity:
230213_153645 18.107 Tx FT8 0 0.0 1020 3Y0J NT5EE DM81
230213_153715 18.107 Rx FT8 16 -0.5 1206 3Y0J KK6MES CM96
230213_153715 18.107 Rx FT8 9 -0.3 2632 3Y0J K6LAC DM13
230213_153715 18.107 Rx FT8 2 -0.4 1434 3Y0J KC1BUF FN43
230213_153715 18.107 Rx FT8 -2 -1.3 1282 3YOJ KEQXS EM
230213_153715 18.107 Rx FT8 7 -0.9 2198 3Y0J KD6OKH CM88
230213_153745 18.107 Rx FT8 13 -0.3 2632 3Y0J K6LAC DM13
230213_153745 18.107 Rx FT8 20 -0.5 1206 3Y0J KK6MES CM96
230213_153745 18.107 Rx FT8 9 -0.9 2198 3Y0J KD6OKH CM88
230213_153745 18.107 Rx FT8 -4 -1.3 1282 3YOJ KEQXS EM
230213_153745 18.107 Rx FT8 -8 -0.4 1435 3Y0J KC1BUF FN43
230213_153745 18.107 Rx FT8 -15 -0.6 1117 3Y0J KI5UKI EM30
230213_153815 18.107 Rx FT8 14 -0.5 1206 3Y0J KK6MES CM96
230213_153815 18.107 Rx FT8 -4 -1.3 1280 3YOJ KEQXS EM
230213_153815 18.107 Rx FT8 9 -0.3 2632 3Y0J K6LAC DM13
230213_153815 18.107 Rx FT8 -8 -0.6 1560 CQ W3TAC FM19
230213_153815 18.107 Rx FT8 -5 -0.4 1435 3Y0J KC1BUF FN43
230213_153815 18.107 Rx FT8 -13 -0.6 1117 3Y0J KI5UKI EM30
230213_153845 18.107 Rx FT8 -1 -1.3 1281 3YOJ KEQXS EM
230213_153845 18.107 Rx FT8 -1 -0.6 1560 CQ W3TAC FM19
230213_153845 18.107 Rx FT8 0 -0.4 1434 3Y0J KC1BUF FN43
230213_153845 18.107 Rx FT8 12 -0.3 2633 3Y0J K6LAC DM13
230213_153915 18.107 Rx FT8 7 -0.6 1560 CQ W3TAC FM19
230213_153915 18.107 Rx FT8 2 -1.3 1281 3YOJ KEQXS EM
230213_153915 18.107 Rx FT8 -2 -0.4 1435 3Y0J KC1BUF FN43
230213_153945 18.107 Rx FT8 0 -1.3 1281 3YOJ KEQXS EM
230213_153945 18.107 Rx FT8 7 -0.6 1560 CQ W3TAC FM19
230213_153945 18.107 Rx FT8 1 -0.3 1435 3Y0J KC1BUF FN43
230213_154015 18.107 Rx FT8 8 -0.6 1560 CQ W3TAC FM19
230213_154015 18.107 Rx FT8 5 -0.5 1153 3Y0J N2YBB FN30
230213_154015 18.107 Rx FT8 0 -1.3 1282 3YOJ KEQXS EM
230213_154015 18.107 Rx FT8 -8 -0.4 1435 3Y0J KC1BUF FN43
230213_154045 18.107 Rx FT8 3 -0.5 1153 3Y0J N2YBB FN30
230213_154045 18.107 Rx FT8 -1 -1.3 1281 3YOJ KEQXS EM
230213_154045 18.107 Rx FT8 3 -0.4 1435 3Y0J KC1BUF FN43
230213_154115 18.107 Rx FT8 5 -0.5 1153 3Y0J N2YBB FN30
230213_154115 18.107 Rx FT8 1 -1.4 1282 3YOJ KEQXS EM
230213_154115 18.107 Rx FT8 -5 -0.4 1434 3Y0J KC1BUF FN43
230213_154115 18.107 Rx FT8 -23 0.7 450 17WCP RR73; NT5EE
<3Y0J> +06 ? a2
230213_154145 18.107 Tx FT8 0 0.0 1852 3Y0J NT5EE DM81
230213_154215 18.107 Tx FT8 0 0.0 1852 3Y0J NT5EE DM81
230213_154245 18.107 Tx FT8 0 0.0 750 3Y0J NT5EE R-23
230213_154315 18.107 Tx FT8 0 0.0 750 3Y0J NT5EE R-23
230213_154345 18.107 Tx FT8 0 0.0 750 3Y0J NT5EE R-23
> On Feb 17, 2023, at 14:35, Jon Anhold via wsjt-devel
> <wsjt-devel@lists.sourceforge.net> wrote:
>
> It isn't a pirate. The "? a2" indicated that this was an A Priori decode.
>
> On Fri, Feb 17, 2023 at 1:57 PM Fred Carvalho via wsjt-devel
> <wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net>>
> wrote:
> John answered
> My guess on this is that the a2 decode you received with your report was
> not real. It was on 752hz offset, not ~304hz where they were transmitting.
> ====================================================
>
> John is right. I have never seen 3Y0J transmitting that high. He was actually
> below (300-400Hz). However it does not look like a false decode.
> Maybe a pirate ! Once there was a real 3Y0J in ODD and a pirate in EVEN
>
> Fred
>
> --
> Fred - PY2XB
>
> PY2FXH, PY2FXH/W2, PY2FXH/9, PY2XB/0, F/PY2XB, ZX2XB, PT7BXB, PY2XB/PY0F,
> PQ0F <https://www.qrz.com/db/pq0f>, VP5/PY2XB, PW2IO
> <https://www.qrz.com/db/pw2io>(SA-071), ZX8W <https://www.qrz.com/db/zx8w>
> (SA-060), PY2XB/1 (SA-029), 8P9XB <https://www.qrz.com/db/8p9xb>, PQ8XB
> <http://www.qrz.com/db/pq8xb> (SA-045), ZX2S <http://www.qrz.com/db/zx2s>
> (SA-028), PR7XB W4/PY2XB, 3D2XB <http://www.qrz.com/db/3d2xb>, PY22XB
> <http://www.qrz.com/db/py22xb>,PY0FX, W2/PY2XB, W9/PY2XB, VE3/PY2XB, PY2XB/5
> Team member : PW2M <https://www.qrz.com/db/pw2m> (SA-071), PX8J
> <http://www.px8j.com/> (SA-041), T30PY - T30SIX <http://www.mdxc.org/t30py/>,
> PT0S <http://www.pt0s.com/>, 9M0W <http://www.yt1ad.info/9m0w/>
>
>
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