SP9OJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JN99

Receiver-side FT8 activity involving SP9OJ, decoded by SO8OO in southeastern Poland. 3,606 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 87 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-08.

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 3,606 FT8 messages attributed to SP9OJ as the transmitting token by decoded message structure across 87 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (41%), followed by 40 m (38%) and 60 m (14%). The busiest six-hour window was 02:00-08:00 UTC, containing 45% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -4 dB.

Overview

3,606

Messages attributed

UTC dates decoded

449

Active 15-min windows

-4 dB

Estimated median S/N

Bands

160m · 230 80m · 1,482 60m · 510 40m · 1,371 20m · 13

First attributed message: 2026-06-06
Last attributed message: 2026-09-08 20:32 UTC

Observed FT8 message patterns

Attributed sample: 3,606 messages
Active dates: 87 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -17 to +6.4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 461, moderate (-15 to -9 dB) 741, strong (≥ -8 dB) 2,404.

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 SP9OJ in decoded directed-looking exchanges:

SQ3WL · Poland ×13 SP8BJU · Poland ×10 IK4LZH · Italy ×9 SP9TEX · Poland ×6 SQ9MEZ · Poland ×5 SQ9AWN · Poland ×5 F1PBZ · France ×5 ON1BH · Belgium ×4 TM2WWA · France ×4 TM8WWA · France ×3 SQ8V · Poland ×3 SN0GIP · Poland ×3

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 SP9OJ

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: JN99 · 2,700 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 206 km (approx.)
Last such locator decoded: 2026-09-08 20:32 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	SP9OJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 20:33	160m	- / -9	HF100PKP	+9 / -	3	Partial capture
09-08 20:31	160m	-18 / -	SO100PKP	- / -	3	Partial capture
09-08 20:19	160m	-15 / -	DM0CRACY	- / -	5	Partial capture
09-08 19:22	160m	- / -10	SQ7LQT	+1 / -	5	Partial capture
09-08 19:08	80m	+10 / -	R9CS/P	- / -	2	Partial capture
09-08 15:34	40m	- / +5	IW0FGX	-12 / -	4	Partial capture
09-08 15:33	40m	-15 / -9	SP100PKP	-14 / -	3	✓ Closing observed
09-08 15:32	40m	-2 / -	OZ/KD0NDU	- / -2	3	Partial capture
09-08 14:19	40m	+4 / -	SP9DPM/P	- / -	2	Partial capture
09-08 14:13	40m	-1 / -	F5OYA/P	- / +2	2	Partial capture
09-08 14:11	40m	-3 / -	UA3UBV/1	- / -	5	Partial capture
09-08 06:09	80m	- / -	RR73;	+12 / -	2	Partial capture
09-08 06:08	80m	-7 / -	SN100PKP	- / +6	3	Partial capture
09-08 03:54	80m	0 / -19	HF100PKP	-5 / -17	4	Partial capture
09-07 20:46	40m	- / -	SP9OJ	-5 / -	7	Partial capture
09-07 20:12	160m	- / -12	DA6SHO	-10 / -	2	✓ Closing fragment
09-07 20:04	80m	- / -14	SO100PKP	+10 / -	2	Partial capture
09-07 15:53	40m	-4 / -1	SP100PKP	-2 / -	2	Partial capture
09-07 15:52	40m	-6 / -	SV9/SV1ABB	- / -	2	Partial capture
09-07 15:35	40m	- / -15	SO100PKP	-21 / -	2	Partial capture
09-07 15:34	40m	-8 / -	SV8/F2VX	- / +2	3	Partial capture
09-07 15:18	40m	-7 / +1	HF100PKP	-10 / -	2	Partial capture
09-07 15:17	40m	-6 / -	SO100PKP	- / +1	2	Partial capture
09-06 21:40	40m	- / -9	SN8N	-11 / -	2	✓ Closing fragment
09-06 14:22	40m	-1 / -17	RY3F	-11 / -1	5	✓ Full exchange observed
09-06 14:21	40m	-2 / 0	SQ5I	-5 / +7	5	✓ Full exchange observed
09-06 14:20	40m	-1 / -	SP9TEX	- / -	2	Partial capture
09-06 14:09	40m	-7 / -	R1943OD	- / -	19	Partial capture
09-06 12:55	40m	- / -10	SP1373AB	-18 / -	6	Partial capture
09-06 12:46	40m	-9 / -	SP1373AB	- / -	7	Partial capture
09-06 07:37	40m	+2 / 0	SP8BJU	-6 / +4	6	✓ Full exchange observed
09-06 05:45	80m	+1 / +2	SP9TEX	+14 / +9	5	✓ Full exchange observed
09-06 05:42	80m	-1 / -	OU7M/P	- / -	3	Partial capture
09-06 05:38	80m	+2 / 0	SP8BJU	+12 / +3	8	✓ Full exchange observed
09-05 07:33	40m	- / -	HA1ZW	-4 / -	2	Partial capture
09-05 07:13	40m	-7 / +2	SP8BJU	-5 / -	45	Partial capture
09-05 06:08	60m	+4 / +3	SP8BJU	+6 / -	19	✓ Full exchange observed
09-05 05:45	80m	+2 / -	3Z100PKP	- / +5	2	Partial capture
09-05 05:20	80m	- / -	SP9OJ	-2 / -	21	Partial capture
09-05 05:17	80m	+3 / 0	SP8BJU	+10 / -	5	✓ Full exchange observed
09-04 17:19	80m	+16 / +3	SP9TEX	+5 / +9	4	✓ Full exchange observed
09-04 12:40	40m	-13 / -	SP8RPA	- / -	19	Partial capture
09-04 09:35	40m	-12 / -	SQ8V	- / -	4	✓ Closing fragment
09-04 05:52	80m	-4 / -13	SP8BJU	+18 / +9	6	✓ Full exchange observed
09-04 04:53	40m	+7 / -	SP7VCL	- / +6	4	✓ Closing fragment
09-04 04:46	40m	+4 / -	SP9TEX	- / -	8	Partial capture
09-03 18:23	80m	+5 / -	SQ8V	- / -	4	Partial capture
09-03 17:39	60m	+6 / -	SP8BJU	- / -	2	Partial capture
09-03 17:32	60m	+2 / -	SP8BJU	- / -	3	Partial capture
09-03 08:26	40m	+1 / +2	SP8BJU	-4 / +5	7	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
192330  +4 1562  SP9OJ SQ7LQT -13 (x3)
201945 -17 1694  DM0CRACY SP9OJ JN99 (x4)
202130  +7 1358  SP9OJ SO100PKP -10
202145 -13 1695  DM0CRACY SP9OJ R+20
203145 -20 1694  SO100PKP SP9OJ JN99 (x3)
203300  +9 1358  SP9OJ HF100PKP -09 (x3)

80m

UTC    dB Audio  Message
060930  +9 1646  SP9OJ RR73; SQ3DAB <...> -08
061015  -9 1121  <SN100PKP> SP9OJ JN99 (x2)
061100 +14 2153  SP9OJ RR73; DO4AL <...> -14
061115  -5 1122  CQ SP9OJ JN99 (x7)
190815  +7 2732  R9CS/P SP9OJ JN99 (x2)
190900 +14 2204  SP9OJ 3Z100PKP -06
190915 +17  504  RT4A/QRP SP9OJ R+07

40m

UTC    dB Audio  Message
141415  -1  944  F5OYA/P SP9OJ +02
141430  -3 2240  SP9OJ HF100PKP R-14
141500  -1 2240  SP9OJ RR73; OM0MR <...> -18
141945  +5  372  SP9DPM/P SP9OJ JN99 (x2)
153215  -3 1576  OZ/KD0NDU SP9OJ JN99 (x3)
153330 -15 2239  SP9OJ SP100PKP R-09 (x2)
153400 -12 1043  SP9OJ IW0FGX +05 (x4)
153545 -15 2239  SP100PKP SP9OJ 73

60m

UTC    dB Audio  Message
061115  +4 1445  SP9OJ SP8BJU +03 (x2)
061145  +2 1288  SP8BJU SP9OJ JN99
061215  +5 1445  SP9OJ SP8BJU +03
061215  +4 1288  SP8BJU SP9OJ JN99 (x2)
061300  +8 1445  SP9OJ SP8BJU -02
061300  +6 1288  SP8BJU SP9OJ JN99
061330 +10 1445  SP9OJ SP8BJU -02
061330  +5 1288  SP8BJU SP9OJ JN99 (x2)
061400  +6 1445  SP9OJ SP8BJU +02
061415  +2 1288  SP8BJU SP9OJ R+14
061430  +8 1445  SP9OJ SP8BJU RR73
061445  +3 1288  SP8BJU SP9OJ 73

20m

UTC    dB Audio  Message
055730 -17 1113  SP9OJ TA3NK R-17
055730  +1 2671  SP9OJ DL1R JN58
055830 -18 1113  SP9OJ TA3NK R-17 (x2)
072615 -22 1624  SP9OJ PD0PWH R-01
075530 -11 1779  SP9OJ 5B4AMX +00 (x2)
222000  -7 1383  SP9OJ ON1DGN -10
222000  -5  417  SP9OJ WA4MIT EM63
061045  +8 1630  SP9OJ SP9OJ JN99 (x3)
061215  +0 1980  VY0 SP9OJ JN9
061315  +9 2019  VY0ERC SP9OJ JN99 (x2)

10m

UTC    dB Audio  Message
183545  -8  438  SP9OJ IK4LZH JN54 (x3)
085900 -13 1439  SP9OJ IK7IMK +03
174830 -19 2193  SP9OJ F8AEJ RR73
175730 -20 1062  SP9OJ S55A -15 (x2)
072915 -11 1102  SP9OJ F5PTY -20 (x2)
132700 -21 2057  SP9OJ RA3QTT -07
135815  +5  966  SP9OJ SV7BAY +20 (x2)
095230  -3 1033  SP9OJ IW4ELZ RR73
095300 -10  400  SP9OJ S57BTI JN75 (x2)

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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