BI3UPU — 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: OM64

Receiver-side FT8 activity involving BI3UPU, decoded by SO8OO in southeastern Poland. 47 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-08-22 and 2026-10-20.

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 47 FT8 messages attributed to BI3UPU as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (94%), followed by 20 m (6%). 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 (85%); the estimated median was -20 dB.

Overview

47
Messages attributed
14
UTC dates decoded
25
Active 15-min windows
-20 dB
Estimated median S/N

Bands

40m · 44 20m · 3
First attributed message: 2026-08-22
Last attributed message: 2026-10-20 19:41 UTC

Observed FT8 message patterns

Attributed sample
47 messages
Active dates
14 UTC dates
Estimated median S/N
-20 dB
Estimated 10th-90th percentile
-24 to -15 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 7, 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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with BI3UPU 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 BI3UPU

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
OM64 · 27 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,230 km (approx.)
Last such locator decoded
2026-10-07 22:24 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 UTCBandBI3UPU S/NCounterpartCounterpart S/NMsgsCapture
10-23 16:59 40m - / -12 RA3GK -4 / - 3 ✓ Closing fragment
10-23 16:32 40m - / -11 DL3CY +16 / - 2 ✓ Closing fragment
10-23 16:22 40m - / -18 R9LY -2 / - 5 Partial capture
10-23 16:16 40m - / -20 RT2D -12 / - 2 Partial capture
10-23 16:02 40m - / -17 RT2D -14 / - 3 Partial capture
10-23 15:57 40m - / -16 R5BM -6 / - 2 ✓ Closing fragment
10-23 15:53 40m - / -2 RJ3DC -12 / - 2 ✓ Closing fragment
10-23 15:45 40m - / -12 RW4W -16 / - 2 ✓ Closing fragment
10-22 19:36 40m - / -14 RA6YDX +4 / - 2 ✓ Closing fragment
10-22 18:05 40m - / -24 RN6MA -8 / - 2 ✓ Closing fragment
10-22 18:00 40m - / -18 RD3TBQ -4 / - 2 Partial capture
10-22 17:09 40m - / -18 R9WEI -8 / - 3 Partial capture
10-22 16:58 40m - / -10 LZ2XA +12 / - 2 ✓ Closing fragment
10-22 16:25 40m - / -14 RW3LL +6 / - 2 ✓ Closing fragment
10-22 16:23 40m - / -24 SP1MGM -2 / - 2 Partial capture
10-22 16:22 40m - / -24 DL8CKL +4 / - 2 ✓ Closing fragment
10-22 16:13 40m - / -14 RM8L +4 / - 2 ✓ Closing fragment
10-22 16:04 40m - / -15 RM8L -4 / - 2 Partial capture
10-22 15:53 40m - / -20 UA9CMN -6 / - 2 ✓ Closing fragment
10-22 15:49 40m - / -19 RA3FD -2 / - 2 Partial capture
10-22 15:21 40m - / -20 RA1TL -1 / - 3 Partial capture
10-21 23:02 40m - / -17 IK2UEC -14 / - 2 ✓ Closing fragment
10-21 22:49 40m - / -10 F1PBZ +1 / - 2 ✓ Closing fragment
10-21 22:00 40m - / -16 UA6ADU -10 / - 3 Partial capture
10-21 21:42 40m - / -20 CT9/DF7EE -7 / - 6 Partial capture
10-21 19:13 40m - / -13 IK0CHU +6 / - 2 ✓ Closing fragment
10-21 18:29 40m - / -19 LZ1DPP -7 / - 5 Partial capture
10-21 18:16 40m - / -12 RA6ABO +2 / - 2 ✓ Closing fragment
10-21 18:10 40m - / -17 EA1AUO -14 / - 4 Partial capture
10-21 18:09 40m - / -19 IK0CHU +3 / - 3 Partial capture
10-21 18:04 40m - / -12 RU3VT -8 / - 2 ✓ Closing fragment
10-21 18:01 40m - / -19 R6LQU -4 / - 3 ✓ Closing fragment
10-21 17:41 40m - / -16 RC6O 0 / - 4 ✓ Closing fragment
10-21 17:35 40m - / -17 OE8DDX +16 / - 2 ✓ Closing fragment
10-21 17:13 40m - / -20 OK1DOL -12 / - 2 ✓ Closing fragment
10-21 17:07 40m - / -12 UA3DIB +8 / - 3 ✓ Closing fragment
10-21 16:50 40m - / -15 LZ2WP +11 / - 2 ✓ Closing fragment
10-21 16:35 40m - / -15 R4WZ -13 / - 2 ✓ Closing fragment
10-21 14:05 40m - / - OM5ALL -12 / - 5 Partial capture
10-21 13:55 40m - / - HA8CE +6 / - 2 Partial capture
10-20 19:44 40m - / - RD7O +1 / - 3 Partial capture
10-20 19:41 40m -24 / - R4ZZ -6 / -21 3 ✓ Closing observed
10-20 18:36 40m - / -17 RK6OU -9 / - 2 ✓ Closing fragment
10-20 18:22 40m - / -17 S51NA +3 / - 3 ✓ Closing fragment
10-20 18:13 40m - / -24 YT2ZE +1 / - 2 ✓ Closing fragment
10-20 17:34 40m - / -13 SQ3PMX -6 / - 4 Partial capture
10-20 17:29 40m - / -18 EU4U +2 / - 2 ✓ Closing fragment
10-20 17:20 40m - / -9 R6BH -12 / - 3 ✓ Closing fragment
10-20 16:59 40m - / -9 UD8D -1 / - 2 ✓ Closing fragment
10-20 16:58 40m - / -12 UA1WCF -14 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
160215 -17 1344  BI3UPU RT2D -17 (x5)
162215  -1  951  BI3UPU R9LY -18 (x5)
163245 +15  339  BI3UPU DL3CY -11 (x2)
165900  -2 1745  BI3UPU RA3GK -12 (x3)
10m 
UTC    dB Audio  Message
084615  -6 1068  BI3UPU DL3MIB -15 (x2)
125915 -21 1962  BI3UPU F1TXI -16
085915  -1 1663  BI3UPU CN8WK -12 (x2)
80m 
UTC    dB Audio  Message
211015 +14 2925  BI3UPU SP2HNF RR73
212800 +19  734  BI3UPU IK0HBN -17 (x4)
213030 -24 1513  BI3UPU RA0APD NO65
213245 -15  362  BI3UPU BA4RF -11 (x2)
194700  +1 2882  BI3UPU RW0CR -07 (x2)
190645 +18 2540  BI3UPU S58N JN76 (x3)
145900 +10 2607  BI3UPU OH1MLZ -18 (x2)
20m 
UTC    dB Audio  Message
173730  +2 1351  BI3UPU DL2TT -07 (x3)
174615  +2  551  BI3UPU DK3NU -11 (x3)
175245  -4 1305  BI3UPU EC1CT RR73
180945  +2 1884  BI3UPU AO5FSB -13 (x2)
181400  -8  995  BI3UPU OE3OOG -16 (x2)
191400 -14  604  BI3UPU HA7XL RR73
191915 -19 2132  LU6DOT BI3UPU OM64 (x2)
193130 -23 2101  OE5CCN BI3UPU OM64

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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