SP3DOF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO72

Receiver-side FT8 activity involving SP3DOF, decoded by SO8OO in southeastern Poland. 5,245 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 66 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-03.

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 5,245 FT8 messages attributed to SP3DOF as the transmitting token by decoded message structure across 66 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (58%), followed by 40 m (26%) and 80 m (16%). Most decodes (82%) fell within the six-hour window 04:00-10:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

5,245
Messages attributed
66
UTC dates decoded
376
Active 15-min windows
-7 dB
Estimated median S/N

Bands

80m · 844 40m · 1,346 20m · 3,052 10m · 3
First attributed message: 2026-06-07
Last attributed message: 2026-10-03 06:48 UTC

Observed FT8 message patterns

Attributed sample
5,245 messages
Active dates
66 UTC dates
Estimated median S/N
-7 dB
Estimated 10th-90th percentile
-16.5 to +3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 643, moderate (-15 to -9 dB) 1,524, strong (≥ -8 dB) 3,078.

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 SP3DOF in decoded directed-looking exchanges:

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 SP3DOF

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
JO72 · 3,249 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
552 km (approx.)
Last such locator decoded
2026-10-03 06:48 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 UTCBandSP3DOF S/NCounterpartCounterpart S/NMsgsCapture
10-04 03:36 40m - / +8 TA3NK -3 / - 3 ✓ Closing fragment
10-03 06:44 40m - / -4 SQ8CTR -16 / - 2 ✓ Closing fragment
10-03 06:37 40m -10 / -7 YT2TW -12 / -8 5 ✓ Full exchange observed
10-03 06:35 40m -8 / - SP6SPK - / -5 2 ✓ Closing fragment
10-03 06:28 40m -10 / - SQ2EEJ - / -5 2 ✓ Closing fragment
10-03 06:24 40m -8 / -12 I4BUQ -6 / -4 5 ✓ Full exchange observed
10-03 06:20 40m -8 / -5 PD0TV -16 / -5 4 ✓ Full exchange observed
10-03 06:15 40m -10 / - DL1YAU - / -8 3 ✓ Closing fragment
10-03 05:54 40m -2 / - EI7IN - / -12 2 Partial capture
10-03 05:49 40m -6 / -4 EU1EU -6 / -3 3 ✓ Full exchange observed
10-03 05:33 40m -2 / - GI4OGS - / -5 2 ✓ Closing fragment
10-03 05:15 40m -4 / +6 DL3NAA -3 / -10 6 ✓ Full exchange observed
10-03 05:01 40m -8 / +10 F6FTB -10 / 0 3 ✓ Full exchange observed
10-01 04:06 40m - / -8 RZ7KR -4 / - 2 ✓ Closing fragment
10-01 03:58 40m - / -3 IW2ODG 0 / - 6 ✓ Closing fragment
09-29 04:40 80m +8 / +9 OK1WE +7 / +10 3 ✓ Full exchange observed
09-29 04:38 80m +8 / - EA3GCT - / -14 4 ✓ Closing fragment
09-29 04:36 80m +1 / -9 HB9ALO -2 / -2 3 ✓ Full exchange observed
09-29 04:34 80m +6 / -6 F4FSY 0 / -12 4 ✓ Full exchange observed
09-29 04:32 80m +7 / -3 SV2JAO -8 / -4 4 ✓ Full exchange observed
09-29 04:29 80m +4 / -23 PC1K -15 / -20 8 ✓ Full exchange observed
09-29 04:22 80m +2 / - SV2JAO -10 / -3 12 ✓ Closing observed
09-29 04:18 80m +2 / - CT2GQA - / -16 5 Partial capture
09-29 04:11 80m +5 / - CT2GQA - / -16 2 Partial capture
09-29 04:10 80m - / - ON4MAP -17 / - 3 Partial capture
09-29 04:09 80m 0 / +1 DL5FH -10 / -7 3 ✓ Full exchange observed
09-29 04:05 80m +7 / - F1ROA - / - 2 ✓ Closing fragment
09-29 04:00 80m +10 / -5 DL6BCZ 0 / -3 6 ✓ Full exchange observed
09-29 03:31 40m - / 0 4X5CG -16 / - 2 Partial capture
09-28 06:55 40m -12 / - SQ6PZL - / -22 3 Partial capture
09-28 06:38 40m -11 / -11 YO6BLM -8 / -16 6 ✓ Full exchange observed
09-28 06:31 40m -15 / - OO7D - / -10 2 ✓ Closing fragment
09-28 06:11 40m -14 / -11 RA3GFO -7 / +1 5 ✓ Full exchange observed
09-28 04:32 40m - / -9 RK9UE -7 / - 2 Partial capture
09-28 03:47 40m - / -11 IW2ODG +2 / - 2 Partial capture
09-27 10:35 40m -18 / - M9NTS - / -10 9 Partial capture
09-27 10:33 40m -19 / - IN3JRZ - / -5 3 ✓ Closing fragment
09-27 10:27 40m -16 / - PA7D - / -6 2 ✓ Closing fragment
09-27 04:06 80m -2 / -6 SP7ENZ +1 / +8 4 ✓ Full exchange observed
09-27 04:02 80m -3 / -6 YO5EEE -8 / -6 4 ✓ Full exchange observed
09-27 04:01 80m +1 / - CT2GQA -8 / -4 7 Partial capture
09-27 03:53 80m +6 / -4 IU5LQC +4 / -1 3 Partial capture
09-27 03:49 80m -3 / -2 PE2JMR +6 / -4 7 ✓ Full exchange observed
09-27 03:48 80m -4 / -10 UY0HY +8 / 0 4 ✓ Full exchange observed
09-27 03:47 80m 0 / - LY7M +21 / - 4 ✓ Full exchange observed
09-27 03:46 80m +6 / - EA3AKY +2 / - 2 ✓ Closing observed
09-27 03:34 80m +4 / -12 DO8JB -8 / -5 5 ✓ Full exchange observed
09-27 03:32 80m +3 / -13 SP3PM -16 / -9 4 ✓ Full exchange observed
09-27 03:28 80m -3 / - DK8HC/P -8 / -1 4 ✓ Closing observed
09-27 03:25 80m -3 / - PI4DX - / -12 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
064100 -10 1042  CQ SP3DOF JO72 (x7)
064445 -17 1578  SP3DOF SQ8CTR -04 (x2)
064600 -11 1042  CQ SP3DOF JO72 (x3)
033600  -5  994  SP3DOF TA3NK KM39 (x3)
80m 
UTC    dB Audio  Message
043345  +8 1480  CQ SP3DOF JO72
043415  +7 1480  F4FSY SP3DOF -12
043430  +0 1796  SP3DOF F4FSY R-06
043445  +6 1480  F4FSY SP3DOF RR73
043500  -1 1796  SP3DOF F4FSY 73
043645  +1 1480  HB9ALO SP3DOF -02
043700  +2 1062  SP3DOF HB9ALO R-09 (x2)
043845  +9 1480  EA3GCT SP3DOF -14 (x4)
044045  +8 1481  OK1WE SP3DOF +10
044100  +5 2101  SP3DOF OK1WE R+09 (x2)
60m 
UTC    dB Audio  Message
040630  -9 2023  SP3DOF G8OO R-16 (x9)
20m 
UTC    dB Audio  Message
162030 -21 1564  SP3DOF BG5BAA R-07 (x2)
162115  +4 1904  CQ SP3DOF JO72 (x4)
162415 +10 1904  UW5ESX SP3DOF +04 (x5)
162645  +2 1904  CQ SP3DOF JO72
162715  +1 1904  UW5ESX SP3DOF -01
163115 -13 1756  HB9TIH SP3DOF +04 (x2)
10m 
UTC    dB Audio  Message
113130 -18 1333  SP3DOF PD0RDD JO22 (x3)
142730 -15 1644  SP3DOF F1SAA JN25 (x4)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee