SP8BJU — 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: KO01

Receiver-side FT8 activity involving SP8BJU, decoded by SO8OO in southeastern Poland. 1,962 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 2026-06-07 and 2026-11-02.

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 1,962 FT8 messages attributed to SP8BJU 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 (47%), followed by 60 m (37%) and 40 m (14%). The busiest six-hour window was 03:00-09:00 UTC, containing 50% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was +4 dB.

Overview

1,962
Messages attributed
87
UTC dates decoded
236
Active 15-min windows
+4 dB
Estimated median S/N

Bands

First attributed message: 2026-06-07
Last attributed message: 2026-11-02 05:31 UTC

Observed FT8 message patterns

Attributed sample
1,962 messages
Active dates
87 UTC dates
Estimated median S/N
+4 dB
Estimated 10th-90th percentile
-11.1 to +14 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 96, moderate (-15 to -9 dB) 172, strong (≥ -8 dB) 1,694.

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.

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 · 430 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
182 km (approx.)
Last such locator decoded
2026-11-02 05:31 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 UTCBandSP8BJU S/NCounterpartCounterpart S/NMsgsCapture
11-02 06:00 40m - / -17 TC2TR -18 / - 2 ✓ Closing fragment
11-02 05:28 60m - / -2 I1WQR +2 / - 5 ✓ Closing fragment
11-01 06:13 60m -2 / - TK/DH7SB - / -16 2 Partial capture
11-01 06:11 60m 0 / -2 SQ4PKO -8 / 0 5 ✓ Full exchange observed
11-01 06:02 60m 0 / - DH6DAO -19 / -6 4 ✓ Closing observed
11-01 06:00 60m 0 / -2 F4VWK +2 / -2 4 ✓ Full exchange observed
11-01 05:35 80m +2 / -9 ON6MVR 0 / -11 4 ✓ Full exchange observed
11-01 05:32 80m +2 / +3 MD0CCE +8 / -1 6 ✓ Full exchange observed
11-01 05:31 80m -1 / -7 DD2MON -6 / -12 8 ✓ Full exchange observed
10-31 07:14 40m -13 / +2 DD3ZZ -2 / -2 3 ✓ Full exchange observed
10-29 19:54 60m - / -11 OE9HGV +10 / - 2 ✓ Closing fragment
10-29 19:37 60m - / -10 IN3EZB -10 / - 2 Partial capture
10-29 19:34 60m - / -10 DF7RG -2 / - 2 Partial capture
10-29 19:29 60m - / -1 DK1XAM -6 / - 2 ✓ Closing fragment
10-29 19:23 60m - / -5 SP3EPK -14 / - 2 ✓ Closing fragment
10-29 19:11 60m - / - OK1MAT -4 / - 2 ✓ Closing fragment
10-29 19:07 60m - / +4 IQ0AAI -12 / - 2 ✓ Closing fragment
10-29 18:58 60m - / -30 OK4SU 0 / - 2 ✓ Closing fragment
10-29 18:57 60m - / - OM2CW -2 / - 2 ✓ Closing fragment
10-29 18:49 60m - / +3 F4PAN -2 / - 2 ✓ Closing fragment
10-29 05:41 80m +15 / - F5MXH -18 / -10 3 ✓ Closing observed
10-29 05:40 80m +14 / - OM3ZAS - / -8 2 ✓ Closing fragment
10-29 05:35 60m -4 / -7 SV1OZ -15 / -5 3 Partial capture
10-29 05:34 60m -4 / - F4GGS - / -2 2 Partial capture
10-29 05:32 60m -7 / -2 S51WB -1 / -4 4 ✓ Full exchange observed
10-29 05:31 60m -12 / - HA5LB - / -7 2 ✓ Closing fragment
10-29 05:25 60m - / -10 IU8LMC -12 / - 2 ✓ Closing fragment
10-29 05:12 80m -9 / - RA6MQ/P - / - 4 Partial capture
10-28 10:44 40m -2 / - F1LPT/P - / -18 2 Partial capture
10-28 10:33 40m +2 / - PA3CLP - / -16 12 ✓ Closing fragment
10-28 06:04 80m +3 / - R9CS/P - / -9 3 Partial capture
10-28 05:38 80m +9 / 0 OK2UPY/P +2 / -2 2 Partial capture
10-28 05:34 60m - / - DL5MRK -9 / - 2 Partial capture
10-28 05:28 60m -2 / - F5TLZ - / -13 2 ✓ Closing fragment
10-28 05:26 60m -2 / -17 F1IQH -8 / - 4 ✓ Closing observed
10-27 04:31 80m -4 / -19 N0BUZ -3 / -15 11 ✓ Full exchange observed
10-27 04:30 80m -4 / -1 F4FPR -24 / -20 5 ✓ Full exchange observed
10-27 04:28 80m - / -18 WB2JUF -22 / - 3 ✓ Closing fragment
10-27 04:11 40m - / -9 TA2VUZ -17 / - 2 ✓ Closing fragment
10-26 20:27 60m - / +3 HB9GNH -4 / - 2 ✓ Closing fragment
10-26 20:03 60m - / -12 GW0RQC -12 / - 2 ✓ Closing fragment
10-26 19:40 60m - / +3 GI0IJB -10 / - 2 ✓ Closing fragment
10-26 19:25 40m - / -16 EA5KB -14 / - 3 Partial capture
10-26 19:18 40m - / -23 PC9K -7 / - 2 Partial capture
10-26 19:12 40m - / -10 G0RVY -1 / - 2 ✓ Closing fragment
10-26 19:08 40m - / -11 PD0MNO -10 / - 2 ✓ Closing fragment
10-26 18:56 40m - / +6 DL1ECG -5 / - 2 Partial capture
10-26 18:53 40m - / +4 PG4T +6 / - 2 ✓ Closing fragment
10-26 18:50 40m - / -8 DJ2MS -4 / - 2 ✓ Closing fragment
10-26 14:41 40m -3 / - F1LPT/P - / -16 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
103830  +2  446  PA3CLP SP8BJU -13 (x6)
104415  -2 1972  F1LPT/P SP8BJU -18 (x2)
071430 -13  567  DD3ZZ SP8BJU -02
071545  -1  565  SP8BJU DD3ZZ R+02 (x2)
053915  +5  924  SP8BJU PI4RS JO22
055745 -24 1453  SP8BJU CT7AUT R-14
060030 -20 2063  SP8BJU TC2TR R-17 (x2)
60m
UTC    dB Audio  Message
061130  -9 1783  SP8BJU SQ4PKO KO13
061145  -2 2303  SQ4PKO SP8BJU +00
061200  -7 2304  SP8BJU SQ4PKO R-02
061215  +1 2303  SQ4PKO SP8BJU RR73
061230  -7 2304  SP8BJU SQ4PKO 73
061245  -3 2303  CQ SP8BJU KO01
061315  -3 2303  TK/DH7SB SP8BJU -16 (x2)
052800 -21 1281  CQ SP8BJU KO01
052815  +1 1281  SP8BJU I1WQR JN44 (x5)
053130 -14  839  CQ SP8BJU KO01
80m
UTC    dB Audio  Message
053230  +3 1759  MD0CCE SP8BJU -01
053245  -4 1748  SP8BJU DD2MON R-07
053300  +1 1686  MD0CCE SP8BJU -01
053315  -8 1748  SP8BJU DD2MON R-07
053330  +1 1686  MD0CCE SP8BJU -06
053345 +11  532  SP8BJU MD0CCE R+03
053400  +3 1686  MD0CCE SP8BJU RR73
053415  +4  532  SP8BJU MD0CCE 73
053430  -2 1686  DD2MON SP8BJU RR73
053445  -2 1819  SP8BJU DD2MON 73
053530  +1 1686  ON6MVR SP8BJU -11
053545  -1 1687  SP8BJU ON6MVR R-09
053600  +3 1686  ON6MVR SP8BJU RR73
053615  +2 1687  SP8BJU ON6MVR 73
053830  +3 1892  SV3AUW SP8BJU -20
160m
UTC    dB Audio  Message
194615  +4 2604  DD2ML SP8BJU +01
194815  +4 1849  SP8BJU LY2J R-08
194830  -9 1848  LY2J SP8BJU RR73
194845 -10 2503  SP8BJU R2EA/P -16
194845  +8 1849  SP8BJU LY2J 73
194915  -7 1638  DC0GL SP8BJU -18
194930 -12 1638  SP8BJU DC0GL R-10
194945 -14 1636  DC0GL SP8BJU RR73
195000 -13 1638  SP8BJU DC0GL 73
195145 -13 1321  OM2WW SP8BJU -02 (x2)
195230 +11 1321  SP8BJU OM2WW R-06
195245  -3 1321  OM2WW SP8BJU RR73
195300 +10 1321  SP8BJU OM2WW 73
042115  -2 1534  F5BZB SP8BJU -02
10m
UTC    dB Audio  Message
120745 -16 1510  SP8BJU CT7AUT R+10 (x2)
121945 -13 1029  SP8BJU CS7BMX R+06 (x3)
123345 -14 1553  SP8BJU DL5XL R+17 (x2)
125500 -13 1575  SP8BJU IZ8NVV R-04 (x2)
141830  -7 2690  SP8BJU EA7R R+04 (x2)
141445 +11 2471  SP8BJU CN8WK R-01 (x2)
143430 -14 2496  SP8BJU CR7BUW R+01
122330 -10  714  SP8BJU EA7HS R-02
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

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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