SM4OAL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JP70

Receiver-side FT8 activity involving SM4OAL, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-11.

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 34 FT8 messages attributed to SM4OAL as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (65%); the estimated median was -14 dB.

Overview

34
Messages attributed
5
UTC dates decoded
8
Active 15-min windows
-14 dB
Estimated median S/N

Bands

40m · 34
First attributed message: 2026-06-09
Last attributed message: 2026-09-11 17:37 UTC

Observed FT8 message patterns

Attributed sample
34 messages
Active dates
5 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-18 to -10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 2.

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 SM4OAL 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 SM4OAL

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
JP70 · 9 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,249 km (approx.)
Last such locator decoded
2026-09-11 17:34 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 UTCBandSM4OAL S/NCounterpartCounterpart S/NMsgsCapture
09-17 23:33 40m - / -9 R4HHN -6 / - 2 Partial capture
09-17 23:32 40m - / -14 TA4SSK -24 / - 2 Partial capture
09-17 23:29 40m - / - TA4SSK -4 / - 2 Partial capture
09-17 18:49 40m - / -18 ON5RZ -3 / - 5 Partial capture
09-17 18:43 40m - / -10 DL6RS +11 / - 4 ✓ Closing fragment
09-17 18:32 40m - / -12 DA0O -5 / - 3 ✓ Closing fragment
09-17 16:42 40m - / - US2UM +3 / - 4 Partial capture
09-11 17:34 40m - / -16 RA4HG -9 / - 5 Partial capture
09-11 17:34 40m -13 / -15 UX7QG -10 / - 8 ✓ Closing observed
09-11 17:30 40m -12 / - SP1ZMO +2 / +4 9 Partial capture
09-11 17:28 40m -13 / - SP5CTY -16 / +4 4 ✓ Closing observed
09-11 17:28 40m - / - DL1EDR +5 / - 3 Partial capture
09-11 17:25 40m -15 / -15 RC5F -1 / - 5 ✓ Closing observed
09-11 17:22 40m - / +5 OZ5PO -8 / - 4 ✓ Closing fragment
09-07 16:25 40m - / -9 DL6CMF -1 / - 3 Partial capture
09-07 16:19 40m - / - UB4FGK -5 / - 3 Partial capture
09-07 16:13 40m - / - DF5DY +2 / - 3 Partial capture
09-07 16:12 40m - / -19 G0JEI -8 / - 2 ✓ Closing fragment
08-21 20:08 40m - / - OE9NET -2 / - 2 Partial capture
08-21 19:59 40m -16 / - PA3AGN -3 / -2 3 Partial capture
08-21 19:58 40m -11 / - EC2ASL - / -10 3 Partial capture
08-21 19:54 40m -8 / - IK4LZH +3 / +8 5 Partial capture
07-21 18:38 40m - / - DL5BTE -1 / - 3 Partial capture
07-21 17:51 40m - / - DJ1TU -11 / - 3 Partial capture
07-21 17:20 40m - / -24 UA4FKT -14 / - 3 ✓ Closing fragment
07-21 17:11 40m - / -4 SP3HCA -8 / - 3 ✓ Closing fragment
07-14 17:20 40m - / -19 PE1PEO -15 / - 2 ✓ Closing fragment
07-14 17:13 40m - / -12 IN3THU 0 / - 3 ✓ Closing fragment
07-08 23:04 40m - / +3 DB5OET -15 / - 2 ✓ Closing fragment
07-08 22:53 40m - / -6 G0KUC -13 / - 5 ✓ Closing fragment
07-08 22:53 40m - / -3 PG7R -14 / - 3 ✓ Closing fragment
07-08 22:44 40m - / - UR6QV -7 / - 7 Partial capture
07-08 22:43 40m - / -7 RN6MA -8 / - 2 ✓ Closing fragment
07-08 16:52 40m - / -12 UW5KW -8 / - 3 ✓ Closing fragment
07-06 21:54 40m - / -8 UB6OCP -18 / - 2 Partial capture
07-06 21:40 40m - / -6 DL1ASX -11 / - 2 ✓ Closing fragment
07-06 21:37 40m - / +3 DK7NL -12 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
184445 +16 2990  SM4OAL DL6RS 73
184915  -4 2477  SM4OAL ON5RZ JO21 (x5)
232015  -6 1174  SM4OAL TA4SSK KM57
232515 -20 1653  SM4OAL UA9SY 73
232915  -1 1173  SM4OAL TA4SSK KM57 (x4)
233345  -9 1005  SM4OAL R4HHN LO43 (x2)
233845 -11 1174  SM4OAL TA4SSK 73

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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