BI8FRF — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: China Most frequent locator attributed to this token: OL28

Receiver-side FT8 activity involving BI8FRF, decoded by SO8OO in southeastern Poland. 231 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-01.

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 231 FT8 messages attributed to BI8FRF as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (70%), followed by 40 m (28%) and 20 m (2%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (91%); the estimated median was -22 dB.

Overview

231
Messages attributed
23
UTC dates decoded
52
Active 15-min windows
-22 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-11-01 23:18 UTC

Observed FT8 message patterns

Attributed sample
231 messages
Active dates
23 UTC dates
Estimated median S/N
-22 dB
Estimated 10th-90th percentile
-24 to -16 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 211, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 0.

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.

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 BI8FRF

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
OL28 · 137 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,161 km (approx.)
Last such locator decoded
2026-11-01 23:18 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 UTCBandBI8FRF S/NCounterpartCounterpart S/NMsgsCapture
11-05 22:38 80m - / -17 M0BEW -6 / - 3 ✓ Closing fragment
11-05 22:33 80m - / -23 SP5AA +20 / - 5 Partial capture
11-05 22:30 80m - / -15 SP9HZW +10 / - 3 ✓ Closing fragment
11-04 23:20 40m - / - DK4BE -16 / - 2 Partial capture
11-04 23:17 40m - / -5 EA4T -9 / - 3 ✓ Closing fragment
11-04 23:14 40m - / -7 EA4T -6 / - 2 Partial capture
11-04 23:06 80m - / - IU2THY +15 / - 3 Partial capture
11-01 23:20 80m - / - SM7IYM -4 / - 2 Partial capture
11-01 23:07 60m - / - HA7XL -12 / - 2 Partial capture
11-01 23:05 60m - / - DC6MY +1 / - 3 Partial capture
11-01 23:02 60m - / -7 DG5CST +8 / - 8 ✓ Closing fragment
11-01 14:19 80m - / - R3RB -11 / - 3 Partial capture
11-01 14:18 80m - / - RK6OQ -4 / - 5 Partial capture
10-31 23:01 80m - / - UT4TA -2 / - 3 Partial capture
10-31 23:00 80m - / - IV3VBM +11 / - 4 Partial capture
10-31 22:57 80m - / - SP5JMA +4 / - 2 Partial capture
10-31 22:56 80m - / -19 DK6ITM -3 / - 2 Partial capture
10-31 13:41 80m - / -18 UA3D +1 / - 3 ✓ Closing fragment
10-30 23:24 40m - / -19 EA1FAW -12 / - 3 ✓ Closing fragment
10-30 23:14 40m - / -17 Z33PB -10 / - 2 ✓ Closing fragment
10-30 22:27 80m - / - DA6BR -2 / - 4 Partial capture
10-30 22:27 80m - / - SQ4INW +12 / - 2 Partial capture
10-30 22:25 80m - / -17 ON4CMT -3 / - 10 ✓ Closing fragment
10-30 22:23 80m - / - DO1YFF -7 / - 3 Partial capture
10-30 22:22 80m - / - DA6BR +9 / - 7 Partial capture
10-30 19:53 80m - / -8 ES2AJ +2 / - 2 ✓ Closing fragment
10-30 16:02 60m - / - LA6YEA -6 / - 2 Partial capture
10-29 21:58 80m - / - OH5XB -17 / - 2 Partial capture
10-29 21:56 80m - / -11 SM7XON -11 / - 2 ✓ Closing fragment
10-29 21:51 80m - / -23 IK6HRB 0 / - 8 ✓ Closing fragment
10-29 21:51 80m - / -13 OH3DP -14 / - 5 ✓ Closing fragment
10-29 21:51 80m - / -14 IV3DXW +18 / - 3 ✓ Closing fragment
10-29 21:48 80m - / -17 DD3KF +7 / - 3 ✓ Closing fragment
10-29 21:47 80m - / -19 M0CRX -16 / - 2 ✓ Closing fragment
10-26 12:36 80m - / - RY3K -4 / - 6 Partial capture
10-22 23:23 80m - / -18 EW4DX -7 / - 5 ✓ Closing fragment
10-22 23:22 80m - / -17 HA7UL +7 / - 2 ✓ Closing fragment
10-22 23:18 80m - / -18 EW4DX -4 / - 4 Partial capture
10-22 23:09 80m - / -7 SV8TCK -3 / - 6 ✓ Closing fragment
10-22 23:08 80m - / - HA7VC/P +4 / - 3 Partial capture
10-22 23:08 80m - / -21 OZ1LD +1 / - 4 ✓ Closing fragment
10-22 23:00 40m - / -14 TA2ED -20 / - 3 Partial capture
10-22 21:11 80m - / -16 R5DK +6 / - 3 Partial capture
10-22 21:10 80m - / -20 RA3BQ -1 / - 2 Partial capture
10-22 14:13 40m - / - RV6HEG -19 / - 3 Partial capture
10-22 14:12 40m - / - RW3PL 0 / - 2 Partial capture
10-22 14:07 40m - / - UA3DTS -10 / - 2 Partial capture
10-21 23:08 40m - / -10 EA7LIC 0 / - 6 ✓ Closing fragment
10-21 23:06 40m - / - UA9SY -13 / - 3 Partial capture
10-21 20:24 80m - / - SQ7LM -4 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m
UTC    dB Audio  Message
085800 -18 1669  BI8FRF IK4LDZ JN63 (x4)
090300 -14 2523  BI8FRF IU0VOG JN61 (x2)
100730  -4  971  BI8FRF CR7BRV -10 (x2)
062130 -13 2271  BI8FRF 7Z1FF -06 (x2)
090315  +4 2146  BI8FRF CN8WK -17 (x2)
085415 -17 2288  BI8FRF 5Z4RS -20
073830  -8  717  BI8FRF 6W/IK2HKT -09
073900  -6  717  BI8FRF RR73; JH3CUL <...> -16
80m
UTC    dB Audio  Message
232100  -9 2006  BI8FRF SM7IYM JO56
230630 +14 2716  BI8FRF IU2THY JN45 (x3)
223015  +6 1569  BI8FRF SP9HZW KO00 (x3)
223345 +21 1851  BI8FRF SP5AA JO92 (x5)
223815  -6 2529  BI8FRF M0BEW -17 (x3)
40m
UTC    dB Audio  Message
230030 -19 1388  BI8FRF TA2ED -14 (x3)
231430 -12  338  BI8FRF Z33PB -17 (x2)
232400 -13 1305  BI8FRF EA1FAW -19 (x3)
231415  -5 1334  BI8FRF EA4T -07 (x5)
232000 -16 1824  BI8FRF DK4BE JO43 (x2)
60m
UTC    dB Audio  Message
230300  +7 2044  BI8FRF DG5CST JO60 (x6)
230530  -2  723  BI8FRF DC6MY JN58
230600  -7 2231  BI8FRF SP3EPK -16
230600 -15 1915  BI8FRF EA1R IN73
230600  +4  723  BI8FRF DC6MY JN58 (x2)
230700 -14 2549  BI8FRF HA7XL JN97 (x2)
230900  -4 2227  BI8FRF DK7QJ JO41
231630 -18 1648  BI8FRF DF7KW JN48
160m
UTC    dB Audio  Message
154445  -3 2914  BI8FRF RY3K LO00
154615  -5 1448  BI8FRF DL3KZA JO64 (x6)
154915 -24 1748  BI8FRF RW3SK -20
154915 -14 2416  BI8FRF E73S JN92 (x2)
155015 -13 2573  BI8FRF OH2IS KP10
155015 -12 2416  BI8FRF E73S JN92 (x2)
155415 -17 2415  BI8FRF E73DPR JN92 (x2)
20m
UTC    dB Audio  Message
012445 -22 1442  BI8FRF R3KCW KO90 (x2)
005415  -3 2344  BI8FRF XQ1KK -21 (x2)
135545 -21 1750  BH9FUA BI8FRF R-12

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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