SA7BXU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO65

Receiver-side FT8 activity involving SA7BXU, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-09-22.

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 28 FT8 messages attributed to SA7BXU as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (43%), followed by 60 m (29%) and 40 m (18%). Most decodes (64%) 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 -17 dB.

Overview

28
Messages attributed
7
UTC dates decoded
12
Active 15-min windows
-17 dB
Estimated median S/N

Bands

80m · 3 60m · 8 40m · 5 20m · 12
First attributed message: 2026-07-07
Last attributed message: 2026-09-22 05:01 UTC

Observed FT8 message patterns

Attributed sample
28 messages
Active dates
7 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-20 to -6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 6.

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 SA7BXU 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 SA7BXU

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
JO65 · 16 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
855 km (approx.)
Last such locator decoded
2026-09-22 04:59 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 UTCBandSA7BXU S/NCounterpartCounterpart S/NMsgsCapture
09-22 04:59 60m -17 / +1 ON1JP -20 / -9 4 ✓ Full exchange observed
09-22 04:59 60m -18 / - VE2CKW - / - 2 Partial capture
09-22 04:58 60m - / - IZ4JMA -18 / - 3 Partial capture
09-22 04:57 60m -20 / 0 F4GAJ -16 / -1 6 ✓ Full exchange observed
09-22 04:57 60m - / -10 IK4CBO -9 / - 3 ✓ Closing fragment
09-22 04:56 60m -20 / -1 PA4PA +6 / +6 4 ✓ Full exchange observed
09-19 11:48 40m - / - SP7LPD -2 / - 2 ✓ Closing fragment
09-19 11:47 40m - / - DG1KFR -20 / - 2 ✓ Closing fragment
09-19 11:45 40m - / -1 YL3GAO -6 / - 2 ✓ Closing fragment
09-19 11:40 40m - / -11 SQ3RAX -6 / - 3 ✓ Closing fragment
09-19 11:39 40m - / - DD6UVO -6 / - 2 Partial capture
09-19 11:38 40m - / -19 PA3ATR -11 / - 2 ✓ Closing fragment
09-19 11:30 40m - / -5 SP2EOE -12 / - 3 ✓ Closing fragment
09-18 13:07 40m - / -13 DL8LRZ -11 / - 3 ✓ Closing fragment
09-16 05:08 80m -18 / - VP2MAA - / - 3 Partial capture
09-14 14:57 40m -7 / - DG4BBK -8 / -5 5 ✓ Closing observed
09-12 19:57 40m -3 / - CN8NS - / - 2 Partial capture
09-10 08:13 40m - / -20 YL3CU -6 / - 2 ✓ Closing fragment
09-05 08:25 40m - / +7 DL7EDU -1 / - 5 ✓ Closing fragment
07-08 09:27 20m - / -25 LZ2VQ -11 / - 4 ✓ Closing fragment
07-08 09:26 20m -13 / - OK1ZJK - / - 2 ✓ Closing fragment
07-08 08:05 20m - / - LZ2VQ -6 / - 3 Partial capture
07-08 07:57 20m -8 / - MI0NWA - / -16 2 Partial capture
07-07 17:19 20m -19 / -11 TN8GD -20 / -11 3 Partial capture
07-07 17:13 20m - / +5 DL1DEU +6 / - 3 ✓ Closing fragment
07-07 07:26 20m -14 / - TI5RR - / - 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
113845 -11  884  SA7BXU PA3ATR R-19 (x2)
113915  -5 1965  SA7BXU DD6UVO JO62 (x2)
114015  -1 2041  SA7BXU SQ3RAX JO82 (x3)
114145 -20 2259  SA7BXU DK4CN JO33
114545  -5  883  SA7BXU YL3GAO R-01 (x2)
114715 -18 1770  SA7BXU DG1KFR JO33 (x2)
114845  -3 1593  SA7BXU SP7LPD JO91 (x2)
083130 -15  914  SA7BXU PA3GHJ -05
60m 
UTC    dB Audio  Message
045800 -21 1396  SA7BXU IZ4JMA JN54
045800 -12 1612  SA7BXU IK4CBO 73
045800 -17 1884  SA7BXU F4GAJ IN99
045815 -20 1773  F4GAJ SA7BXU -01
045830 -16 1396  SA7BXU IZ4JMA JN54
045830 -15 1883  SA7BXU F4GAJ R+00
045845 -19 1774  F4GAJ SA7BXU RR73
045900 -18 1396  SA7BXU IZ4JMA JN54
045900 -17 1884  SA7BXU F4GAJ 73
045915 -18 1774  VE2CKW SA7BXU JO65
045930 -21 1437  SA7BXU ON1JP +01
045945 -18 1774  VE2CKW SA7BXU JO65
050045 -17 1774  ON1JP SA7BXU R-09
050100 -19 1437  SA7BXU ON1JP RR73
050115 -17 1774  ON1JP SA7BXU 73
80m 
UTC    dB Audio  Message
050545  -1  260  SA7BXU PA4PA RR73
050800 -17 2083  VP2MAA SA7BXU JO65 (x3)
20m 
UTC    dB Audio  Message
171945 -20 2194  TN8GD SA7BXU R-11
075745  -9 2728  MI0NWA SA7BXU R-16 (x2)
080430 -12 2588  TF5B SA7BXU JO65
080545  -6 2588  SA7BXU LZ2VQ KN23 (x3)
092615 -11 2518  OK1ZJK SA7BXU JO65 (x2)
092730 -12 2518  SA7BXU LZ2VQ KN23 (x4)
072445  -5 1348  SA7BXU IS0/IK2YCW +03
102100 -16 2361  OM0RX SA7BXU JO65

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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