C31BP — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Andorra Most frequent locator attributed to this token: JN02

Receiver-side FT8 activity involving C31BP, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-13 and 2026-08-11.

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 50 FT8 messages attributed to C31BP as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

50
Messages attributed
4
UTC dates decoded
8
Active 15-min windows
-15 dB
Estimated median S/N

Bands

20m · 50
First attributed message: 2026-07-13
Last attributed message: 2026-08-11 17:24 UTC

Observed FT8 message patterns

Attributed sample
50 messages
Active dates
4 UTC dates
Estimated median S/N
-15 dB
Estimated 10th-90th percentile
-19 to -10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 3.

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 C31BP 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 C31BP

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
JN02 · 23 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,792 km (approx.)
Last such locator decoded
2026-08-09 16:28 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 UTCBandC31BP S/NCounterpartCounterpart S/NMsgsCapture
09-14 18:12 40m - / -10 9A3SO -14 / - 3 ✓ Closing fragment
09-13 20:37 40m - / - R7GA -8 / - 4 ✓ Closing fragment
09-13 20:34 40m - / -21 OH3CYT -15 / - 4 Partial capture
09-13 20:31 40m - / -25 R7DI +2 / - 3 Partial capture
09-13 20:22 40m - / - EI3CTB -6 / - 6 Partial capture
09-13 20:18 40m - / -7 G0KAD -10 / - 5 ✓ Closing fragment
09-13 20:16 40m - / -14 TF4M -2 / - 11 ✓ Closing fragment
08-11 17:58 40m - / - DK2CF -4 / - 2 Partial capture
08-11 17:49 40m - / -20 RN6HK -17 / - 3 Partial capture
08-11 17:43 40m - / -9 PA2RO -9 / - 5 Partial capture
08-11 17:43 40m - / -20 OK7TB -5 / - 4 Partial capture
08-11 17:40 40m - / -15 5B4ALJ -10 / - 2 ✓ Closing fragment
08-11 17:38 40m - / -16 YO2SH -18 / - 2 Partial capture
08-11 17:37 40m - / -15 EU4U -6 / - 2 ✓ Closing fragment
08-09 16:46 20m - / -8 RA6LO +4 / - 2 Partial capture
08-09 16:31 20m - / -4 UB6OCD -18 / - 2 ✓ Closing fragment
08-09 16:26 20m -14 / - 7X2KF - / -15 5 Partial capture
08-09 16:24 20m -14 / - EA7LGO - / 0 2 ✓ Closing fragment
08-09 16:23 20m -11 / - YO9IAB - / -17 3 Partial capture
08-09 16:14 20m -19 / - YO9IAB - / -8 2 Partial capture
08-09 16:03 20m -14 / - RL2F - / -21 3 ✓ Closing fragment
07-26 16:05 20m - / -26 R2DN -8 / - 4 ✓ Closing fragment
07-26 16:04 20m - / - DG3YDE -16 / - 2 Partial capture
07-26 16:03 20m - / - DJ1TU -10 / - 2 Partial capture
07-26 16:02 20m - / - DM4GG +3 / - 4 Partial capture
07-26 15:58 20m - / - EI2KTB -18 / - 3 Partial capture
07-26 15:57 20m -7 / -12 PD0IFI -9 / -7 7 Partial capture
07-26 15:56 20m - / - EA3AAY -20 / - 5 Partial capture
07-26 15:50 20m - / - PA0GSP -14 / - 3 Partial capture
07-26 15:47 20m -14 / +9 EA5HPF -13 / -2 5 Partial capture
07-26 15:42 20m -18 / - PA3KUS - / -10 2 ✓ Closing fragment
07-26 15:39 20m -14 / - CN2DX - / - 2 ✓ Closing fragment
07-26 15:39 20m - / - DJ1TU -7 / - 6 Partial capture
07-26 15:38 20m -14 / - SP9D - / +8 2 Partial capture
07-26 15:37 20m - / - EA2DYB -4 / - 6 Partial capture
07-13 19:41 20m -16 / -16 ED7SUN -14 / - 6 Partial capture
07-13 19:41 20m - / - PD5MJF -12 / - 4 Partial capture
07-13 19:40 20m -18 / - HF7X - / -13 2 Partial capture
07-13 19:39 20m -15 / - OK2CAT - / -14 2 ✓ Closing fragment
07-13 19:36 20m - / -2 EA1JWG -14 / - 3 Partial capture
07-13 19:33 20m - / - EA4MF -15 / - 2 Partial capture
07-13 19:32 20m - / -15 JA4LXY +3 / - 3 ✓ Closing fragment
07-13 19:26 20m - / - F4BYA -6 / - 2 Partial capture
07-13 19:18 20m - / - F4BYA -8 / - 2 Partial capture
07-13 19:13 20m - / +6 CT7AUT -6 / - 4 ✓ Closing fragment
07-08 21:08 40m - / - DL1DAF -8 / - 3 Partial capture
07-08 20:43 40m - / - DB9LG -4 / - 10 Partial capture
07-08 20:38 40m - / - F5RRS -14 / - 2 Partial capture
07-08 20:38 40m - / -2 PB2A -9 / - 7 ✓ Closing fragment
07-08 20:34 40m - / - DL2RPN -2 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
203545 -16 2419  C31BP OH3CYT R-18
203715  -4 2493  C31BP R7GA LN14 (x2)
203745 -17 2092  C31BP OH3CYT R-18
203815  -9 2493  C31BP R7GA LN14
203815 -16 2093  C31BP OH3CYT R-18
203915  -7 2493  C31BP R7GA 73
180415  -8 2988  C31BP UB2FEK KO04
180415  -7 1095  C31BP SQ2NUH -07
180415  -1 1900  C31BP PA3BRB JO32
181145  -4 1276  C31BP DJ0MAB JN49
181215 -14 1277  C31BP 9A3SO R-10 (x3)
181345 -10 1933  C31BP DL1DCT JO31
20m 
UTC    dB Audio  Message
162315 -10 1220  YO9IAB C31BP -17 (x3)
162445 -13 1220  EA7LGO C31BP +00 (x2)
162615 -15 1220  7X2KF C31BP JN02 (x5)
163130 -18 1433  C31BP UB6OCD -04 (x2)
164615  +4 1074  C31BP RA6LO -08 (x2)
172400 -14 1415  UN0GY C31BP 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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