SP8ADU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO11

Receiver-side FT8 activity involving SP8ADU, decoded by SO8OO in southeastern Poland. 200 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-01.

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 200 FT8 messages attributed to SP8ADU as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (62%), followed by 20 m (38%). Most decodes (52%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

200

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

40m · 124 20m · 76

First attributed message: 2026-06-06
Last attributed message: 2026-09-01 21:16 UTC

Observed FT8 message patterns

Attributed sample: 200 messages
Active dates: 26 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -17 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 33, moderate (-15 to -9 dB) 55, strong (≥ -8 dB) 112.

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 SP8ADU in decoded directed-looking exchanges:

F1IQH · France ×4 IK4LZH · Italy ×4 OK1VK · Czech Republic ×2 E70SZ · Bosnia-Herzegovina ×2 ON4MAP · Belgium ×2 2I0WMN · Northern Ireland 2E0CVN · England F4MUD · France M7OKF · England YO6LM · Romania S57MPU · Slovenia M0IOW · England

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 SP8ADU

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: KO11 · 115 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 193 km (approx.)
Last such locator decoded: 2026-09-01 21:14 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	SP8ADU S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-11 03:25	40m	- / 0	RU6UR	-18 / -	3	Partial capture
09-10 06:58	40m	- / -14	G4AWA	-6 / -	2	✓ Closing fragment
09-10 06:53	40m	- / -8	DH5BM	-4 / -	2	Partial capture
09-10 06:47	40m	- / -10	G0JEI	-8 / -	2	✓ Closing fragment
09-10 06:42	40m	- / -1	UB3DLM	-13 / -	2	✓ Closing fragment
09-10 06:42	40m	- / -	S51PV	-14 / -	2	Partial capture
09-09 20:59	40m	- / +3	IK2RZQ	0 / -	10	Partial capture
09-09 20:50	40m	- / +8	OT4R	-11 / -	3	Partial capture
09-08 04:23	40m	- / -22	OE4BHF	-2 / -	2	✓ Closing fragment
09-08 04:08	40m	- / -11	RZ6AKF	+14 / -	2	✓ Closing fragment
09-06 03:54	40m	- / -	KQ4ZAX	-17 / -	2	✓ Closing fragment
09-06 03:38	40m	- / 0	TA3NK	-3 / -	3	✓ Closing fragment
09-04 22:07	40m	- / -	OS4K	-20 / -	2	Partial capture
09-04 02:36	40m	- / -11	OZ7FOC	-20 / -	2	✓ Closing fragment
09-04 02:17	40m	- / -	RX3ASQ	-17 / -	2	✓ Closing fragment
09-04 01:49	40m	- / -12	RX3ASQ	-15 / -	3	Partial capture
09-01 21:17	40m	- / -	F1HFP	-5 / -	10	Partial capture
09-01 20:46	40m	-9 / -8	G1LPS	-12 / +4	5	✓ Full exchange observed
09-01 20:39	40m	- / -12	DL1IP	+14 / -	3	✓ Closing fragment
09-01 20:36	40m	- / -16	JI4JKO	-8 / -	2	Partial capture
09-01 05:06	40m	- / -	9A3MA	-4 / -	16	Partial capture
08-31 19:14	20m	- / -16	G8RZ	+2 / -	2	✓ Closing fragment
08-31 18:46	20m	- / -	G4DBW	-8 / -	3	Partial capture
08-31 18:31	40m	+1 / +1	YL3RK	-2 / +7	6	✓ Full exchange observed
08-31 18:30	40m	0 / +2	DL2NYC	+10 / +6	3	✓ Full exchange observed
08-31 18:29	40m	- / -	R3LDK	+2 / -	3	Partial capture
08-31 18:29	40m	+4 / -10	OK1VK	+18 / -	5	✓ Full exchange observed
08-31 18:28	40m	- / -16	F1PBZ	-4 / -	3	Partial capture
08-31 17:45	20m	- / -	IW5ALZ	-3 / -	2	Partial capture
08-31 11:21	20m	- / +8	OE3MZC	+1 / -	2	✓ Closing fragment
08-31 11:18	20m	- / -6	F4HTA	-4 / -	2	✓ Closing fragment
08-31 08:17	20m	- / -21	F4NJZ	+2 / -	3	✓ Closing fragment
08-31 07:39	40m	-3 / 0	YT3N	-2 / -4	4	✓ Full exchange observed
08-31 07:35	40m	-8 / -	GB64MOD	- / -	2	Partial capture
08-31 07:28	40m	-2 / -	M0BOB	- / -13	15	Partial capture
08-31 04:54	40m	- / +3	DL4RY	-6 / -	3	✓ Closing fragment
08-31 04:54	40m	- / -	US2UM	0 / -	2	Partial capture
08-30 18:38	20m	- / -2	F5LGW	+6 / -	6	✓ Closing fragment
08-30 07:02	20m	- / -	IK2RZQ	-4 / -	5	Partial capture
08-30 05:24	20m	- / -14	R8QA	-7 / -	2	Partial capture
08-30 05:12	20m	- / +10	TA7AO	+2 / -	2	✓ Closing fragment
08-30 04:54	20m	- / -	RU4CC	+10 / -	3	✓ Closing fragment
08-29 06:34	20m	- / -	RZ4AZ	-1 / -	2	Partial capture
08-29 04:06	40m	- / -15	F4IIX	-13 / -	3	Partial capture
08-28 21:04	20m	- / -10	F5SOI	+8 / -	2	✓ Closing fragment
08-28 21:01	20m	- / -14	JA4DLF	-24 / -	2	✓ Closing fragment
08-28 17:18	20m	- / -13	TA2ED	-4 / -	2	✓ Closing fragment
08-28 06:02	20m	- / -1	R3EDI	+14 / -	2	Partial capture
08-28 03:38	40m	- / -4	K2ZJ	-3 / -	2	✓ Closing fragment
08-27 18:43	20m	- / -10	8Z1IT	-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
064215 -17 2189  SP8ADU S51PV JN76
064245 -15  445  SP8ADU UB3DLM R-01
064245 -11 2189  SP8ADU S51PV JN76
064315 -11  446  SP8ADU UB3DLM 73
064515 -23 2188  SP8ADU S51PV JN76
064715  -4 1293  SP8ADU S58MU RR73
064745 -10  409  SP8ADU G0JEI -10 (x2)
065345  -3  240  SP8ADU DH5BM -08 (x2)
065845  -8  468  SP8ADU G4AWA -14 (x2)
032545 -17 1600  SP8ADU RU6UR +00 (x3)

20m

UTC    dB Audio  Message
081745  +0  814  SP8ADU F4NJZ R-21 (x2)
081915 -15 1914  SP8ADU M7PHE IO93
111415 -14 1592  SP8ADU DM1YS -10
111815  -3  583  SP8ADU F4HTA -06 (x2)
112130  +0 1410  SP8ADU OE3MZC +08 (x2)
174515  -1 3035  SP8ADU IW5ALZ JN53 (x2)
184645  -8 2244  SP8ADU G4DBW JO01 (x3)
191445  +2  935  SP8ADU G8RZ -16 (x2)

10m

UTC    dB Audio  Message
104815  +0  484  SP8ADU DG6TOM JN58 (x2)
104945  -7  484  SP8ADU PD1HPB 73
102445  -2  492  SP8ADU IK4LZH R-06
101815  +2 2733  SP8ADU F1PBZ -04 (x2)
142945  -3  479  SP8ADU IK8NSR JN72 (x2)
134145  -6  483  SP8ADU F5ILV JN23
134145  +0 2637  SP8ADU F1PBZ -04
104815 -10  486  SP8ADU QSY (x2)
105515 -20 1372  SP8ADU IT9IRV -18 (x2)
111715 -19 1400  SP8ADU IU7VOL +03

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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