SP5DUJ — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO02

Receiver-side FT8 activity involving SP5DUJ, decoded by SO8OO in southeastern Poland. 270 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 45 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-04.

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 270 FT8 messages attributed to SP5DUJ as the transmitting token by decoded message structure across 45 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 20 m (27%). Most decodes (70%) fell within the six-hour window 05:00-11:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (67%); the estimated median was -19 dB.

Overview

270

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

40m · 198 20m · 72

First attributed message: 2026-06-06
Last attributed message: 2026-11-04 08:16 UTC

Observed FT8 message patterns

Attributed sample: 270 messages
Active dates: 45 UTC dates
Estimated median S/N: -19 dB
Estimated 10th-90th percentile: -24 to -10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 180, moderate (-15 to -9 dB) 74, strong (≥ -8 dB) 16.

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 SP5DUJ in decoded directed-looking exchanges:

HA1ZW · Hungary ×24 YO6LM · Romania ×12 HG5OGI · Hungary ×10 HB9EFK · Switzerland ×9 YO4GIY · Romania ×8 HG0NPJ · Hungary ×7 DK6WH · Fed. Rep. of Germany ×6 EC3A · Spain ×6 S55A · Slovenia ×6 IK4RVY · Italy ×5 TC2TR · Asiatic Turkey ×5 UY0HY · Ukraine ×5

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 SP5DUJ

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: KO02 · 209 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 290 km (approx.)
Last such locator decoded: 2026-11-04 08:16 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	SP5DUJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-06 07:11	40m	- / -14	UX7QV	+5 / -	2	✓ Closing fragment
11-06 03:50	40m	- / -15	IK1YED	+11 / -	2	✓ Closing fragment
11-06 03:30	40m	- / -13	TC2TR	-8 / -	3	✓ Closing fragment
11-06 03:18	40m	- / -4	IK0CHU	+2 / -	2	✓ Closing fragment
11-06 03:04	40m	- / -18	EC3A	-14 / -	2	Partial capture
11-05 03:35	40m	- / -12	HB9EOT	-2 / -	3	✓ Closing fragment
11-05 03:20	40m	- / -14	IU5AWQ	+1 / -	6	Partial capture
11-05 03:11	40m	- / -9	IU5AWQ	+2 / -	2	✓ Closing fragment
11-05 03:05	40m	- / -14	EC3A	-10 / -	2	✓ Closing fragment
11-04 20:15	40m	- / -25	EA3DY	-13 / -	4	✓ Closing fragment
11-04 08:28	40m	- / -20	IW3RWZ	-16 / -	10	Partial capture
11-04 08:22	40m	- / -18	YO3OBB	-7 / -	3	✓ Closing fragment
11-04 08:14	40m	- / -21	HA1BF	-6 / -	2	✓ Closing fragment
11-04 08:01	40m	- / -12	YL3ATJ	-18 / -	2	✓ Closing fragment
11-04 07:58	40m	- / -9	UX7QV	+6 / -	2	✓ Closing fragment
11-04 07:50	40m	-24 / -	YO2UKG	- / -	2	Partial capture
11-04 07:47	40m	- / -8	DL3RAJ	-5 / -	3	✓ Closing fragment
11-04 07:43	40m	- / -17	HA1ZW	-9 / -	2	✓ Closing fragment
11-04 07:40	40m	- / -12	DM9YL	-6 / -	3	✓ Closing fragment
11-04 07:00	40m	- / -17	HG5OGI	-4 / -	2	✓ Closing fragment
11-04 06:54	40m	- / -11	PI4DX	-6 / -	2	✓ Closing fragment
11-04 03:13	40m	- / -24	HB9ELE	-2 / -	2	Partial capture
11-02 17:26	40m	- / -9	IZ5CPK	+1 / -	2	✓ Closing fragment
11-02 05:03	40m	- / -12	LZ911TD	+4 / -	2	Partial capture
11-02 02:30	40m	- / -20	MI0NWA	-12 / -	2	✓ Closing fragment
11-02 02:25	40m	- / -17	TC2TR	-9 / -	2	✓ Closing fragment
11-01 08:17	40m	-22 / -	SQ1JKB	- / -	2	Partial capture
11-01 08:07	40m	- / -13	DD3ZZ	-10 / -	3	Partial capture
11-01 08:04	40m	- / -14	YO2CK	+6 / -	2	✓ Closing fragment
11-01 07:57	40m	- / -9	DL9HK	+7 / -	3	✓ Closing fragment
11-01 07:54	40m	- / -13	SQ2BXI	-4 / -	2	✓ Closing fragment
11-01 07:29	40m	- / -23	LY3PW	-6 / -	2	Partial capture
11-01 07:04	40m	- / -2	DK5UR	0 / -	2	✓ Closing fragment
11-01 07:02	40m	- / -17	IK4RVY	-4 / -	8	Partial capture
11-01 06:48	40m	- / -15	HB9EFK	+7 / -	3	✓ Closing fragment
11-01 06:45	40m	- / -6	DL6NDN	+1 / -	3	✓ Closing fragment
11-01 06:44	40m	- / -11	UR5YPV	-19 / -	2	✓ Closing fragment
10-31 20:41	40m	- / -19	EA5KB	-8 / -	3	Partial capture
10-31 08:30	40m	- / -1	OH5KNL	+6 / -	2	✓ Closing fragment
10-31 08:12	40m	- / -12	DK6WH	+4 / -	2	✓ Closing fragment
10-31 08:05	40m	-23 / -15	HA1ZW	-8 / -	3	✓ Closing observed
10-31 07:34	40m	- / -8	UR5YPV	-4 / -	2	✓ Closing fragment
10-31 07:30	40m	- / -10	DH1HF	-22 / -	2	Partial capture
10-31 07:26	40m	- / -22	DK6WS	-7 / -	2	Partial capture
10-31 07:18	40m	- / -7	HG5OGI	-5 / -	2	✓ Closing fragment
10-31 05:51	40m	- / -16	DJ0MAB	+8 / -	2	✓ Closing fragment
10-31 05:39	40m	- / -1	YO6LM	+8 / -	2	✓ Closing fragment
10-31 05:34	40m	- / -3	YO7CKQ	-7 / -	2	✓ Closing fragment
10-31 01:50	40m	- / -14	EX7CQ	-13 / -	3	✓ Closing fragment
10-31 01:42	40m	- / -14	TC2TR	-8 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
034930  +3 2909  SP5DUJ IU8RFW RRR
035915 -13 2200  SP5DUJ MI7XHT RR73
185945 -12 1628  SP5DUJ SP4WSL RR73
030415 -12 1837  SP5DUJ EC3A -18 (x2)
031830  -1 1330  SP5DUJ IK0CHU -04 (x2)
033030  -5 1935  SP5DUJ TC2TR -13 (x3)
035030  +9 2975  SP5DUJ IK1YED -15 (x2)
040015  -6 1887  SP5DUJ IW0HLZ -25
071115  +4 1393  SP5DUJ UX7QV -14 (x2)

80m

UTC    dB Audio  Message
014330 -24 1696  SP5DUJ LZ936BA -17

20m

UTC    dB Audio  Message
090315 -10 2507  SP5DUJ PD5MVH -14 (x6)
091930  -8  783  SP5DUJ II7MGXX -06
092200  +1  600  SP5DUJ F1BHB -09 (x2)
092330  +4 2105  SP5DUJ II7MGBT -07 (x2)
092745 -20 2265  SP5DUJ F1UNR -10
101130  -2 1873  SP5DUJ PD0TDK -17 (x3)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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