SP2DTW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO93

Receiver-side FT8 activity involving SP2DTW, decoded by SO8OO in southeastern Poland. 407 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-09-18.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 407 FT8 messages attributed to SP2DTW as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (42%), followed by 40 m (38%) and 20 m (14%). Most decodes (87%) fell within the six-hour window 20:00-02:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -2 dB.

Overview

407

Messages attributed

UTC dates decoded

Active 15-min windows

-2 dB

Estimated median S/N

Bands

160m · 17 80m · 172 60m · 9 40m · 154 20m · 55

First attributed message: 2026-06-14
Last attributed message: 2026-09-18 21:23 UTC

Observed FT8 message patterns

Attributed sample: 407 messages
Active dates: 21 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -15 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 33, moderate (-15 to -9 dB) 79, strong (≥ -8 dB) 295.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SP2DTW in decoded directed-looking exchanges:

DL9KM · Fed. Rep. of Germany ×3 IQ4JO · Italy ×3 YO6LM · Romania ×2 F1PBZ · France ×2 K1HC · United States ×2 SQ8AA · Poland ×2 TK/4O7CC · Corsica ×2 4Z5AV · Israel ×2 DF6NL · Fed. Rep. of Germany DL3NGN · Fed. Rep. of Germany RN6MA · European Russia F5IDJ · France

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to SP2DTW

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: JO93 · 73 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 440 km (approx.)
Last such locator decoded: 2026-09-18 21:23 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	SP2DTW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 21:26	160m	- / -	HF5A	-10 / -	2	Partial capture
09-18 21:23	160m	- / -	UR9QQ	-14 / -	5	Partial capture
09-18 21:22	160m	-10 / +4	HA7TM	+12 / -6	4	✓ Full exchange observed
09-18 21:18	160m	- / -6	R2EA/P	-24 / -	2	Partial capture
09-18 21:18	160m	- / -	DF5AH	-22 / -	2	Partial capture
09-18 21:16	160m	- / -	UX7QV	0 / -	7	Partial capture
09-18 21:11	160m	- / -	HF5A	-10 / -	5	Partial capture
09-18 21:10	160m	-2 / -4	F5IDJ	+16 / -	3	✓ Closing observed
09-18 21:07	160m	-10 / -	F5BZB	- / -8	2	Partial capture
09-18 21:02	160m	- / -	UR9QQ	-11 / -	5	Partial capture
09-18 21:02	160m	- / -	SP6JEV	-11 / -	2	Partial capture
09-18 21:01	160m	- / -	HG9FS	+10 / -	2	Partial capture
09-18 20:55	80m	+8 / -	YL3CW	- / +2	2	Partial capture
09-18 20:22	80m	- / -	RW1AI	-3 / -	2	Partial capture
09-18 20:21	80m	+8 / -5	YO4NF	+3 / -4	4	✓ Full exchange observed
09-18 20:20	80m	+10 / -	RY3F	- / -9	2	✓ Closing fragment
09-18 20:19	80m	+13 / -17	IZ0MIT	-12 / -	2	✓ Closing observed
09-18 20:17	80m	+12 / -	II9IAGM	- / -15	2	Partial capture
09-18 20:17	80m	- / -8	DL/AD2LX	-12 / -	3	Partial capture
09-18 20:15	80m	+4 / -16	IQ4JO	+1 / -	5	✓ Full exchange observed
09-18 20:11	80m	+8 / -	T77R	- / -13	3	Partial capture
09-18 20:03	80m	- / -6	ON4DS	-10 / -	2	Partial capture
09-18 20:02	80m	+6 / -	OE5ABL	- / -9	2	✓ Closing fragment
09-18 19:34	40m	+5 / -	4X1UF	- / -24	2	Partial capture
09-15 20:09	40m	- / -	DK8HC	-2 / -	3	Partial capture
09-15 20:09	40m	+9 / -	TK/4O7CC	-5 / -	2	✓ Closing observed
09-15 19:17	40m	- / 0	UA4FKT	-8 / -	2	Partial capture
09-08 21:49	40m	- / -10	5B4AMM	-7 / -	2	✓ Closing fragment
08-30 22:19	80m	+13 / -15	GJ6WRI	-18 / -7	6	✓ Full exchange observed
08-30 22:17	80m	- / -6	SP2BT	-14 / -	2	Partial capture
08-30 22:17	80m	- / -5	UR9QQ	+13 / -	5	✓ Closing fragment
08-30 22:16	80m	+3 / -4	DK2BJ	0 / -1	5	✓ Full exchange observed
08-30 22:14	80m	-4 / -13	TA7ARH	+10 / +6	6	✓ Full exchange observed
08-30 22:13	80m	-5 / -12	MW0DNF	-8 / -6	4	✓ Full exchange observed
08-28 22:26	20m	- / -11	N0EUV	-14 / -	2	Partial capture
08-28 22:24	20m	- / 0	AA3B	+12 / -	2	✓ Closing fragment
08-28 22:23	20m	- / -	WQ1D	-19 / -	3	Partial capture
08-28 22:19	20m	- / -	WQ1D	-18 / -	2	Partial capture
08-28 22:18	20m	- / -	KJ1R	-16 / -	2	Partial capture
08-28 22:12	20m	- / -13	V31DL	-10 / -	2	✓ Closing fragment
08-28 21:59	80m	+9 / -	OH6FSO	-10 / +2	4	✓ Closing observed
08-28 21:57	80m	+11 / +10	SP9MRP	+11 / +10	4	✓ Full exchange observed
08-28 21:54	80m	+7 / +1	SQ8AA	+12 / +7	5	✓ Full exchange observed
08-28 21:50	80m	+8 / -15	ER5DX	-12 / -22	4	✓ Full exchange observed
08-28 20:52	80m	+12 / -	R1IO	- / +7	2	Partial capture
08-28 20:47	80m	+14 / -	R2AL	+10 / +7	6	Partial capture
08-28 20:47	80m	+6 / -3	R2EN	+6 / -	5	✓ Full exchange observed
08-28 20:46	80m	+8 / +10	SQ5AKY	+9 / +1	4	✓ Full exchange observed
08-28 20:43	80m	+1 / -	4X1UF	-9 / -13	4	✓ Closing observed
08-28 20:37	80m	+4 / -	SP2FTL	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

160m

UTC    dB Audio  Message
211900 -10 1747  CQ SP2DTW JO93
211915 -24 1908  SP2DTW R2EA/P -07
211915 -23 1469  SP2DTW DF5AH JO41
212200 +12 1705  SP2DTW HA7TM +04
212215  -9 1705  HA7TM SP2DTW R-06
212230 +11 1705  SP2DTW HA7TM RR73
212245 -11 1705  HA7TM SP2DTW 73
212300 -15 1396  SP2DTW UR9QQ KN77 (x2)
212345  +2 1705  CQ SP2DTW JO93
212400 -16 1396  SP2DTW UR9QQ KN77 (x3)
212600  -7 2196  SP2DTW HF5A JO92 (x2)

80m

UTC    dB Audio  Message
202100  +9 1640  RY3F SP2DTW RR73
202115  +3 1639  SP2DTW YO4NF -05
202130  +7 1640  YO4NF SP2DTW R-04
202145  +3 1640  SP2DTW YO4NF RR73
202200 +10 1640  YO4NF SP2DTW 73
202215  -5  311  SP2DTW R6KX -12
202230  +9 1639  CQ SP2DTW JO93
202245  -5 2321  SP2DTW RW1AI KO59 (x2)
202315 -17 2403  SP2DTW JE2ERR PM95
202330 +19 1640  OK1DBE SP2DTW RR73
202430  +6 1640  DL/AD2LX SP2DTW -02
202445  -9  618  SP2DTW SP5DFK/QRP R+12
205500  +5 1919  YL3CW SP2DTW JO93 (x2)

40m

UTC    dB Audio  Message
215845 -12 2547  SP2DTW CU2CN R-01
214315 -11 1114  SP2DTW CS8ABF -07
214930  -5 2362  SP2DTW 5B4AMM R-10 (x2)
191715  -6 1634  SP2DTW UA4FKT LO23
191715 -14 2634  SP2DTW 4L6EZ 73
191745  -9 1634  SP2DTW UA4FKT R+00
200930  -5  374  <SP2DTW> TK/4O7CC RR73
200930  -1  598  SP2DTW DK8HC JO42
201000 -16 1125  SP2DTW PG5FRL R+02
201000  -5  598  SP2DTW DK8HC JO42 (x2)
201115  +9  372  TK/4O7CC SP2DTW 73
193400  +4 1740  4X1UF SP2DTW -24 (x2)

20m

UTC    dB Audio  Message
221215  -9 1277  SP2DTW V31DL R-13 (x2)
221800 -17 1630  SP2DTW KJ1R FN32 (x2)
221900 -15 2096  SP2DTW WQ1D FN42 (x4)
222400 +12  656  SP2DTW AA3B R+00
222430 -19 2096  SP2DTW WQ1D FN42
222430 +13  656  SP2DTW AA3B 73
222615 -15 1300  SP2DTW N0EUV R-11 (x2)
214330 -17 1834  V51WH SP2DTW -02
214530 -19 1834  CQ SP2DTW JO93                        a1

60m

UTC    dB Audio  Message
013345 -13 1955  CT7AUT SP2DTW JO93
013615  -8 1662  LA9GX SP2DTW JO93
013630  +0 1161  SP2DTW LA9GX +00
013645  -7 1662  LA9GX SP2DTW R+03
013700  -1 1162  SP2DTW LA9GX RR73
013715  -7 1662  LA9GX SP2DTW 73
013745  -4 1388  CQ SP2DTW JO93 (x2)
205915  -2 1760  SM0EJR SP2DTW JO93
210015  -4 1760  OT4R SP2DTW R-21 (x2)

10m

UTC    dB Audio  Message
112300  -3  852  SP2DTW DF6NL R+03 (x2)
112700 -18 1581  SP2DTW PD0LBY JO22
155945  +0 2866  SP2DTW IQ4JO JN63 (x2)
113615  -7 1610  SP2DTW RN6MA -12 (x3)
152700 -14 1799  SP2DTW DL9KM JN68 (x2)
152830 -10 1983  SP2DTW DG6TOM JN58
152900 -19 1798  SP2DTW DL9KM R-01 (x2)
152930  -9 1983  SP2DTW DG6TOM JN58
102100 -17 1902  SP2DTW 5B4AMX -10

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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