BD8SN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: China Most frequent locator attributed to this token: OL15

Receiver-side FT8 activity involving BD8SN, decoded by SO8OO in southeastern Poland. 289 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-04.

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 289 FT8 messages attributed to BD8SN as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (97%), followed by 80 m (2%) and 40 m (1%). Most decodes (72%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (68%); the estimated median was -12 dB.

Overview

289
Messages attributed
11
UTC dates decoded
83
Active 15-min windows
-12 dB
Estimated median S/N

Bands

80m · 6 40m · 3 20m · 280
First attributed message: 2026-06-11
Last attributed message: 2026-10-04 22:59 UTC

Observed FT8 message patterns

Attributed sample
289 messages
Active dates
11 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-18 to -8 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 52, moderate (-15 to -9 dB) 197, strong (≥ -8 dB) 40.

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 BD8SN 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 BD8SN

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
OL15 · 8 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,258 km (approx.)
Last such locator decoded
2026-10-04 22:58 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 UTCBandBD8SN S/NCounterpartCounterpart S/NMsgsCapture
10-04 23:00 80m - / - UA3LM +12 / - 3 Partial capture
10-04 22:58 80m -13 / -11 R2AL +6 / - 4 ✓ Closing observed
10-04 22:58 80m - / - OH3DP -14 / - 7 Partial capture
10-04 22:56 80m -12 / -21 SX2LGT -12 / - 5 ✓ Closing observed
10-04 22:51 80m - / - OH3DP -12 / - 2 Partial capture
10-04 22:50 80m - / - R2AL +7 / - 3 Partial capture
10-04 22:50 80m -12 / -16 G0ORC +16 / - 2 ✓ Closing observed
10-04 22:45 80m - / - R2AL +8 / - 2 Partial capture
10-04 22:45 80m -18 / -12 RN2F +8 / - 4 ✓ Closing observed
10-04 22:40 80m - / - DO4DXA +6 / - 4 Partial capture
10-04 22:39 80m - / -18 RK5M +13 / - 2 ✓ Closing fragment
10-04 20:09 80m - / -17 RW9MZ -12 / - 2 ✓ Closing fragment
10-04 20:06 80m - / - UA4FKT +14 / - 3 Partial capture
10-04 20:05 80m - / -24 UA1TAT +6 / - 2 ✓ Closing fragment
10-04 19:23 80m - / - RX3DTN +2 / - 2 Partial capture
10-04 18:56 80m - / -17 DJ7M +20 / - 2 ✓ Closing fragment
10-02 15:08 80m - / - UA4FKT -11 / - 3 Partial capture
09-22 21:28 40m - / - MI7XHT -17 / - 3 Partial capture
09-22 19:46 40m - / -12 RA3SO -8 / - 4 ✓ Closing fragment
09-22 18:40 40m - / -2 9A3MRN +6 / - 2 ✓ Closing fragment
09-22 17:20 40m - / -14 UB9WPD -10 / - 2 ✓ Closing fragment
09-13 22:15 40m - / - F5MYK -15 / - 2 Partial capture
09-13 20:35 40m - / -16 R7ZY +10 / - 6 Partial capture
09-13 20:32 40m - / - RA6OY -6 / - 6 Partial capture
09-13 19:57 40m - / -15 IZ8GUU -14 / - 2 ✓ Closing fragment
08-29 20:05 20m - / -12 DF2RG +1 / - 2 ✓ Closing fragment
08-29 19:24 20m - / -17 PY1EME -9 / - 2 ✓ Closing fragment
08-29 18:14 20m - / - IK1QLI -15 / - 3 Partial capture
08-29 18:11 20m - / -14 AO5FSB +2 / - 2 ✓ Closing fragment
08-29 18:10 20m - / - DK1MCS -6 / - 5 Partial capture
08-29 17:48 20m - / - DG9SEH +2 / - 2 Partial capture
08-29 17:47 20m - / -1 DM9EE +2 / - 2 ✓ Closing fragment
08-28 18:18 40m - / - SP3BVI +2 / - 2 Partial capture
08-28 18:17 40m - / -23 PD9HIX +3 / - 5 Partial capture
08-28 17:37 40m - / -12 UC6D +7 / - 2 Partial capture
08-28 17:36 40m - / - LB7ZG -6 / - 3 Partial capture
08-28 16:20 40m - / -13 UA6LIK -1 / - 2 ✓ Closing fragment
08-23 22:29 40m - / - OH1ZE 0 / - 5 Partial capture
08-23 22:28 40m - / -10 SM3ULU -5 / - 8 Partial capture
08-23 21:04 40m - / -16 HA8BE 0 / - 2 ✓ Closing fragment
08-23 20:43 40m - / -18 OK1ZCF -2 / - 2 ✓ Closing fragment
08-23 17:03 40m - / -11 ES2AJ -2 / - 2 ✓ Closing fragment
08-22 21:31 20m - / -20 MW1CFA +1 / - 11 Partial capture
08-22 20:57 20m -18 / - DL9HJS - / -15 3 Partial capture
08-22 19:34 20m - / - ON8BB -10 / - 3 Partial capture
08-22 19:15 20m - / - F4BHK -7 / - 4 Partial capture
08-22 18:59 20m - / - ON8BB -11 / - 3 Partial capture
08-22 18:52 20m - / -12 G4FAL +6 / - 2 ✓ Closing fragment
08-22 17:51 20m - / - ON2VG -11 / - 5 Partial capture
08-22 17:43 20m - / -10 PD1BJO -8 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
225815 -18  460  CQ BD8SN OL15
225830  +8  933  BD8SN R2AL KO85
225830 -11 2420  BD8SN OH3DP KP10
225900  +8  933  BD8SN R2AL R-11
225900 -16 2419  BD8SN OH3DP KP10
225915 -13  461  R2AL BD8SN RR73
225930  +2  933  BD8SN R2AL 73
225930 -14 2420  BD8SN OH3DP KP10
225930  -2  725  BD8SN DO1KRT JO30
230000 +12 1805  BD8SN UA3LM KO54
230000 -15 2420  BD8SN OH3DP KP10
230030 +11 1805  BD8SN UA3LM KO54
230030 -11 2420  BD8SN OH3DP KP10
230100 +12 1805  BD8SN UA3LM KO54
230100 -16 2420  BD8SN OH3DP KP10
40m 
UTC    dB Audio  Message
221530 -16 2594  BD8SN F5MYK IN97 (x2)
223000 -17 2458  BD8FWI BD8SN -07
172000  -9 1107  BD8SN UB9WPD R-14 (x2)
184015  +9 1295  BD8SN 9A3MRN R-02 (x2)
193500  -1 2147  BD8SN R2ZAA R-08
194600  -6 1649  BD8SN RA3SO R-12 (x4)
212830 -19 2071  BD8SN MI7XHT IO64 (x3)
10m 
UTC    dB Audio  Message
081900  -6  403  BD8SN F4EZJ 73
20m 
UTC    dB Audio  Message
181045 -11  761  BD8SN DK1MCS JN57 (x3)
181145  +9 1884  BD8SN AO5FSB R-14
181215  -8  761  BD8SN DK1MCS JN57
181215  -6 1884  BD8SN AO5FSB 73
181245  +0  761  BD8SN DK1MCS JN57
181415 -20  520  BD8SN IK1QLI JN45 (x3)
192445  -7 3001  BD8SN PY1EME R-17 (x2)
200530  -1 2582  BD8SN DF2RG R-12 (x2)
200800 -19 1138  F4VWS BD8SN -09

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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