SP8BJU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO01

Receiver-side FT8 activity involving SP8BJU, decoded by SO8OO in southeastern Poland. 1,536 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 55 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-21.

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 1,536 FT8 messages attributed to SP8BJU as the transmitting token by decoded message structure across 55 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (48%), followed by 60 m (35%) and 40 m (15%). Most decodes (56%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was +6 dB.

Overview

1,536

Messages attributed

UTC dates decoded

167

Active 15-min windows

+6 dB

Estimated median S/N

Bands

160m · 26 80m · 731 60m · 543 40m · 234 20m · 2

First attributed message: 2026-06-07
Last attributed message: 2026-09-21 04:28 UTC

Observed FT8 message patterns

Attributed sample: 1,536 messages
Active dates: 55 UTC dates
Estimated median S/N: +6 dB
Estimated 10th-90th percentile: -9.7 to +15 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 71, moderate (-15 to -9 dB) 101, strong (≥ -8 dB) 1,364.

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 SP8BJU in decoded directed-looking exchanges:

SO8DAN · Poland ×18 SP6ZWD · Poland ×17 SP8PBP · Poland ×11 SP9OJ · Poland ×10 SP8LPL · Poland ×8 SP1DL · Poland ×7 SP4OIK · Poland ×7 SP7CWZ · Poland ×7 SQ7LQT · Poland ×7 SP5WZW · Poland ×6 SP7TJ · Poland ×6 SP9HAX · Poland ×6

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 SP8BJU

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: KO01 · 365 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 182 km (approx.)
Last such locator decoded: 2026-09-21 04:24 UTC

Other locator fields attributed to this token: JN74 (2).

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	SP8BJU S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 04:27	60m	+4 / -	KF8CW	- / -19	2	Partial capture
09-21 04:25	60m	-12 / +2	LY2J	+4 / +2	4	✓ Full exchange observed
09-21 04:21	60m	- / +2	F1PBZ	-4 / -	2	✓ Closing fragment
09-20 05:11	80m	+15 / -	KE4EB	- / -13	3	Partial capture
09-20 05:10	80m	+12 / -15	GM6URC	-15 / -13	4	✓ Full exchange observed
09-19 07:33	40m	-14 / -	SQ9SZ	-7 / -7	3	✓ Closing observed
09-19 07:30	40m	-14 / -	SQ2RBY	- / -8	3	✓ Closing fragment
09-19 04:27	60m	0 / +4	OE5DML	-5 / +1	5	✓ Full exchange observed
09-19 04:24	60m	-2 / -	SP1ZMO	- / -2	2	✓ Closing fragment
09-19 04:23	60m	-2 / +4	DK2CC	-16 / 0	4	✓ Full exchange observed
09-19 04:15	60m	- / 0	F6ICX	+5 / -	2	✓ Closing fragment
09-18 20:12	60m	- / -	LZ2BC	-24 / -	2	Partial capture
09-18 20:12	60m	-4 / 0	5Q7DX	-6 / +1	5	✓ Full exchange observed
09-18 20:09	60m	+8 / -	GX3RAF/P	-8 / -	2	✓ Closing observed
09-12 18:12	60m	+7 / -18	IK4POB	-12 / -13	4	Partial capture
09-12 18:10	60m	+5 / +5	DL4YDR	-16 / -5	4	✓ Full exchange observed
09-12 05:40	80m	+16 / -	9A60CBM	- / -4	4	Partial capture
09-12 05:36	60m	+6 / -8	PA4PA	+8 / +2	4	✓ Full exchange observed
09-12 05:30	80m	+23 / -16	HF100PKP	-8 / -8	2	Partial capture
09-12 05:28	80m	+16 / -	9A60CBM	- / -6	3	Partial capture
09-12 05:11	80m	+16 / -	OL900LTV	- / +1	2	Partial capture
09-11 12:50	40m	-10 / -	3Z100PKP	- / -16	2	Partial capture
09-11 04:46	80m	+14 / -	SN40KZE	- / 0	2	Partial capture
09-11 04:43	80m	+12 / -11	HF100PKP	+17 / -1	3	Partial capture
09-10 11:13	40m	- / +1	9A3AUH	-9 / -	4	✓ Closing fragment
09-10 05:19	80m	+5 / -	SN40KZE	- / -1	2	Partial capture
09-10 04:54	80m	+10 / -	SO100PKP	- / -10	4	Partial capture
09-09 06:53	40m	-15 / -10	3Z100PKP	-18 / -9	2	Partial capture
09-09 06:52	40m	- / 0	SO100PKP	-8 / -	2	Partial capture
09-09 04:45	80m	+8 / -3	SO100PKP	+5 / -1	3	Partial capture
09-06 19:48	60m	+12 / -	F5JAE	- / -5	2	Partial capture
09-06 19:48	60m	- / -	SP7TJ	+13 / -	9	Partial capture
09-06 19:46	60m	+12 / -8	II0CDS	-6 / -6	3	✓ Full exchange observed
09-06 19:45	60m	+6 / +1	LB9RE	-6 / -7	4	✓ Full exchange observed
09-06 19:44	60m	+11 / -	DK3ME	+2 / -3	3	Partial capture
09-06 19:43	60m	+12 / -1	DK3DUA	+8 / +1	4	✓ Full exchange observed
09-06 19:42	60m	+10 / +5	DF3YG	-12 / -7	4	✓ Full exchange observed
09-06 19:41	60m	+4 / -	HB9DDZ	- / 0	2	Partial capture
09-06 19:36	60m	+5 / -1	SP6ZWD	+4 / +4	6	✓ Full exchange observed
09-06 19:35	60m	+8 / -15	SP2GRP	-1 / -2	6	✓ Full exchange observed
09-06 19:34	60m	+7 / -	MM7TKU	- / -19	2	✓ Closing fragment
09-06 19:33	60m	+6 / +3	SP5SJL	-11 / -2	4	✓ Full exchange observed
09-06 19:32	60m	+6 / -	SP8LPL	-11 / -5	7	✓ Full exchange observed
09-06 19:31	60m	+6 / +2	Z68PX	-6 / -	4	✓ Closing observed
09-06 19:30	60m	- / -	SP5SJL	-8 / -	2	Partial capture
09-06 19:30	60m	- / -	SP6ZWD	-1 / -	3	Partial capture
09-06 19:29	60m	+4 / -19	M0GDX	-13 / -4	3	✓ Full exchange observed
09-06 07:44	40m	-6 / -5	SP1BMK	-6 / -12	4	✓ Full exchange observed
09-06 07:42	40m	-8 / -	SP7TJ	-2 / -1	5	✓ Full exchange observed
09-06 07:41	40m	-10 / -8	DH5BM	-16 / -4	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
042745  -5 1314  SP8BJU OE5DML R+04
042800  +0 1314  OE5DML SP8BJU RR73
042815  -4 1314  SP8BJU OE5DML 73
042830  +0 1314  CQ SP8BJU KO01 (x2)
042130  -3 2491  SP8BJU F1PBZ +02 (x2)
042345 -18 2044  CQ SP8BJU KO01 (x2)
042515 -12 1085  LY2J SP8BJU +02
042530  +3 1084  SP8BJU LY2J R+02
042545 -11 1086  LY2J SP8BJU RR73
042600  +5 1084  SP8BJU LY2J 73
042745  +4 2373  KF8CW SP8BJU -19 (x2)

80m

UTC    dB Audio  Message
053130  -8  992  SP8BJU HF100PKP R-16
053200  +4  992  SP8BJU RR73; SP9OJ <...> -18
054015 +16  862  9A60CBM SP8BJU -04 (x4)
060915 +11 1906  R5BM/M SP8BJU -01
060930 +11 1393  SP8BJU 3Z100PKP R-03
051015 +12 2001  GM6URC SP8BJU -13
051030 -13 1778  SP8BJU GM6URC R-15
051045 +12 2001  GM6URC SP8BJU RR73
051100 -17 1778  SP8BJU GM6URC 73
051145 +12 2001  KE4EB SP8BJU -13 (x3)

40m

UTC    dB Audio  Message
111400  -9 2104  SP8BJU 9A3AUH JN75 (x3)
124900  +0 2122  SP8BJU HF100PKP R-02
124930  -6 2122  SP8BJU RR73; SP5EJG <...> -08
125045 -14 2240  3Z100PKP SP8BJU -16 (x2)
142800  +6 1388  SP8BJU SN100PKP R+12
142830  +2 1388  SP8BJU RR73; M9NAM <...> -06
073030 -18  852  SQ2RBY SP8BJU -08 (x3)
073300 -14 1743  SQ9SZ SP8BJU -07 (x2)
073345  -7 1043  SP8BJU SQ9SZ 73

160m

UTC    dB Audio  Message
194915  +6 1890  SP8BJU HA5UA R+00
194930  -7 2246  HA5UA SP8BJU RR73
194945  +5 1890  SP8BJU HA5UA 73
202030  -5 1393  SP8BJU EU3A R-09
202045 -10  833  EU3A SP8BJU RR73
202100  +2 1393  SP8BJU EU3A 73
202330 -17 1101  SP8BJU RR73; OK1DXR <...> +10
202400  -2 1951  SP8BJU SP3BPU JO82 (x2)
202445 -14  832  SP3BPU SP8BJU -08
202500  +4 1951  SP8BJU SP3BPU R-08
202515 -14  832  SP3BPU SP8BJU RR73
202530  +3 1951  SP8BJU SP3BPU 73
202600  -9  832  9A2RD SP8BJU -07 (x2)

20m

UTC    dB Audio  Message
122415 -11  842  SP8BJU TA2EE KM69 (x2)
122445 -14  772  SP8BJU IW2HHL R-12 (x2)
122630  -8 1487  SP8BJU DL6YJB R-09 (x2)
122815 -10 2402  SP8BJU IZ0AIO R+04 (x2)
123345  -7 1493  SP8BJU LA8OOA R+06 (x2)
145800 +15 1875  SP8BJU ON5JT R+14 (x2)
145900  +8 2766  SP8BJU DF0AWG R-13 (x2)
150145 +12  418  SP8BJU GB1FBS R-06

10m

UTC    dB Audio  Message
095930 -21 2131  SP8BJU F6CEE R-09 (x2)
100045  -7 1080  SP8BJU IK1MJK/P R-09 (x2)
101415 -15 2028  SP8BJU IZ2EID R+12 (x2)
103145  -1  965  SP8BJU HB10GBT R-19
121345 -17 1218  SP8BJU PD4FL JO33 (x2)
084915 -15 1642  SP8BJU IN3IZQ R-10 (x2)
091800  +5 2534  SP8BJU IK2UCK R-07 (x2)
095815  -4 2636  SP8BJU F1PBZ -06 (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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