BI4IWL — 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: OM86

Receiver-side FT8 activity involving BI4IWL, decoded by SO8OO in southeastern Poland. 1,534 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-21.

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 1,534 FT8 messages attributed to BI4IWL as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%), followed by 40 m (0%). Most decodes (67%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -3 dB.

Overview

1,534
Messages attributed
18
UTC dates decoded
134
Active 15-min windows
-3 dB
Estimated median S/N

Bands

40m · 5 20m · 1,529
First attributed message: 2026-06-06
Last attributed message: 2026-10-21 18:28 UTC

Observed FT8 message patterns

Attributed sample
1,534 messages
Active dates
18 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-12 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 45, moderate (-15 to -9 dB) 367, strong (≥ -8 dB) 1,122.

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 BI4IWL 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 BI4IWL

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
OM86 · 1,120 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,328 km (approx.)
Last such locator decoded
2026-10-21 18:28 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 UTCBandBI4IWL S/NCounterpartCounterpart S/NMsgsCapture
10-23 21:58 40m - / - M7CYY -16 / - 3 Partial capture
10-23 21:50 40m - / -13 DJ6MN -4 / - 3 ✓ Closing fragment
10-23 21:40 40m - / -7 ON8WR -5 / - 5 ✓ Closing fragment
10-23 21:38 40m - / -24 ON1JP -11 / - 5 Partial capture
10-23 20:50 80m - / -25 IK2TDM +15 / - 3 ✓ Closing fragment
10-22 17:13 40m - / - IU3VGK -14 / - 2 Partial capture
10-21 23:24 40m - / - EA5FD -14 / - 2 Partial capture
10-21 22:54 40m - / -21 IZ8YAA 0 / - 3 Partial capture
10-21 21:53 40m - / -19 EA3GAN -6 / - 6 Partial capture
10-21 21:32 40m - / - IK0CHU +8 / - 2 Partial capture
10-21 21:14 40m - / -13 EA6ABF -4 / - 2 Partial capture
10-21 21:02 40m - / - UD6AWH -4 / - 2 Partial capture
10-21 20:57 40m - / - EA5IT -12 / - 3 ✓ Closing fragment
10-21 20:44 40m - / - EA2AFV -10 / - 3 Partial capture
10-21 20:43 40m - / -14 CT7BRV 0 / - 4 ✓ Closing fragment
10-21 20:26 40m - / -12 ON3MOH -14 / - 2 ✓ Closing fragment
10-21 20:20 40m - / - EA5IT +8 / - 2 Partial capture
10-21 20:10 40m - / -18 ON3MOH +6 / - 2 Partial capture
10-21 19:58 40m - / - PD2FT +4 / - 3 Partial capture
10-21 19:55 40m - / -11 UA9SY -8 / - 4 ✓ Closing fragment
10-21 19:49 40m - / -16 ON3MOH +8 / - 2 Partial capture
10-21 19:39 40m - / -18 ON6KE +1 / - 5 ✓ Closing fragment
10-21 19:27 40m - / - DL6AUK +9 / - 2 Partial capture
10-21 19:13 40m - / - IK5NQI +1 / - 5 ✓ Closing fragment
10-21 19:09 40m - / -19 IK5NQI +2 / - 2 Partial capture
10-21 18:46 40m - / -22 E79HI -13 / - 2 Partial capture
10-21 18:29 40m - / -18 PD1WAT -3 / - 5 ✓ Closing fragment
10-21 18:22 40m - / -15 IX1CVF +2 / - 2 Partial capture
10-21 18:05 40m - / - R6LQU +1 / - 3 Partial capture
10-21 17:41 40m - / -23 S56IAR +3 / - 3 ✓ Closing fragment
10-21 17:29 40m - / -21 OE8DDX +14 / - 2 ✓ Closing fragment
10-21 16:58 40m - / -16 M9DNC -7 / - 8 ✓ Closing fragment
10-21 16:32 40m - / -18 LZ2SPD +7 / - 2 Partial capture
10-12 21:29 40m - / -17 OM3LU -16 / - 2 ✓ Closing fragment
10-12 20:42 40m - / -20 F1DSZ -3 / - 3 ✓ Closing fragment
10-12 20:30 40m - / -18 9A5AGY -2 / - 8 ✓ Closing fragment
10-12 19:53 40m - / -21 F4AFE -2 / - 4 ✓ Closing fragment
10-12 19:47 40m - / -15 EA1ESW -9 / - 6 ✓ Closing fragment
10-12 19:36 40m - / -22 ON8DM 0 / - 3 ✓ Closing fragment
10-12 19:05 40m - / -20 GW0ARK -6 / - 5 Partial capture
10-12 18:46 40m - / -18 EA7E -12 / - 2 Partial capture
10-12 18:42 40m - / - EA7E -12 / - 2 Partial capture
10-12 18:01 40m - / -17 EA1CCM -16 / - 3 Partial capture
10-12 14:52 40m - / - UT3RO +4 / - 2 Partial capture
10-06 14:59 80m - / -24 UF3T -5 / - 2 Partial capture
10-05 22:35 40m - / -23 I7OXH -18 / - 2 Partial capture
10-05 22:29 40m - / - EA1CF -15 / - 2 Partial capture
10-05 22:20 40m - / - F5LMG +1 / - 5 Partial capture
10-05 20:01 40m - / -11 IV3IHV -16 / - 2 Partial capture
10-05 19:49 40m - / -16 EA7GXD 0 / - 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
214045 -16  778  BI4IWL ON1JP -24
214115  -3 2768  BI4IWL ON8WR JO11 (x4)
215045  -2  984  BI4IWL DJ6MN JO30 (x3)
215345 -16 1484  BI4IWL SP3HUU JO71
215545  -9 2768  BI4IWL PD9OH JO21
215645 -13  779  BI4IWL ON1JP -15
215815 -15 1841  BI4IWL M7CYY IO70 (x3)
222015  -8 2769  BI4IWL RT8T 73
80m 
UTC    dB Audio  Message
150230 -12 1827  BI4IWL UX1AA KO70 (x8)
153300  +2 2798  BI4IWL OH5LF KP31 (x2)
145900  -4 1203  BI4IWL UF3T -24 (x2)
205045 +19 2173  BI4IWL IK2TDM -25 (x3)
60m 
UTC    dB Audio  Message
192330 -14  237  BI4IWL 4L7T LN21 (x3)
160m 
UTC    dB Audio  Message
171045  -3 1346  BI4IWL SP5GW KO12 (x3)
10m 
UTC    dB Audio  Message
074245  -4 2789  BI4IWL DL4DTL JN49 (x2)
074445 -19 1591  BI4IWL DL8FBD JO40
075245  -6 1333  BI4IWL DK6QO JO42 (x3)
075545 -15  988  BI4IWL SV2BWY KN10
084915 -13 2500  BI4IWL IK2NHH JN45
085645 -12 2289  BI4IWL IZ4CCL JN54 (x3)
091545  +0 2177  BI4IWL IK2GAU JN45 (x4)
20m 
UTC    dB Audio  Message
141330 -18 2761  5H6PJ BI4IWL 73
142330 -16 2658  VU2FR BI4IWL RR73
142915  +7 2437  BI4IWL PD2WL -19 (x8)
143415  +5 2735  BI4IWL DF7BN JO43 (x3)
122045 -12 2856  CQ BI4IWL OM86                        a1 (x2)

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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