BG4ACY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: China Most frequent locator attributed to this token: PM01

Receiver-side FT8 activity involving BG4ACY, decoded by SO8OO in southeastern Poland. 499 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-06-19.

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 499 FT8 messages attributed to BG4ACY as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -16 dB; no usual signal pattern is inferred.

Overview

499
Messages attributed
2
UTC dates decoded
52
Active 15-min windows
-16 dB
Estimated median S/N

Bands

20m · 499
First attributed message: 2026-06-16
Last attributed message: 2026-06-19 20:48 UTC

Observed FT8 message patterns

Attributed sample
499 messages
Active dates
2 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-21 to -13 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 270, moderate (-15 to -9 dB) 222, strong (≥ -8 dB) 7.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with BG4ACY in decoded directed-looking exchanges:

Most frequent locator attributed to BG4ACY

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
PM01 · 369 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,986 km (approx.)
Last such locator decoded
2026-06-19 20:48 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 UTCBandBG4ACY S/NCounterpartCounterpart S/NMsgsCapture
08-30 14:43 40m - / -11 RM6OS +6 / - 2 ✓ Closing fragment
08-30 14:32 40m - / -14 UA3GJM -9 / - 3 Partial capture
08-07 15:17 20m - / - PD0RDD -20 / - 2 ✓ Closing fragment
08-07 15:11 20m - / -7 UB4CIA -7 / - 2 ✓ Closing fragment
08-07 15:11 20m - / - DL1NCH -16 / - 7 Partial capture
08-07 14:59 20m - / - DL1NCH -6 / - 2 Partial capture
08-07 14:47 20m - / - IU6KQP -6 / - 2 Partial capture
08-07 14:32 20m - / - G6UJJ -17 / - 4 Partial capture
07-10 13:31 20m - / -22 RW4HCU -4 / - 3 ✓ Closing fragment
07-10 13:07 20m - / - F6CAM -14 / - 3 Partial capture
07-02 15:51 20m - / - M9VVE -9 / - 7 Partial capture
07-02 15:43 20m - / - HB9TIH -20 / - 3 Partial capture
07-02 15:43 20m - / +4 TM2WWA -16 / - 2 Partial capture
07-02 15:41 20m - / - M9VVE -9 / - 7 Partial capture
07-02 15:39 20m - / - HB9TIH -16 / - 2 Partial capture
07-02 15:01 20m - / - MW7KFZ -17 / - 4 Partial capture
07-02 13:44 20m - / - DL1MKW -5 / - 11 Partial capture
07-02 13:40 20m - / -6 DL6LAG 0 / - 3 ✓ Closing fragment
06-29 15:32 20m - / -15 F1ODM -11 / - 11 Partial capture
06-29 15:16 20m - / - RZ4FWA -12 / - 2 Partial capture
06-29 15:11 20m - / - DL1R +1 / - 7 Partial capture
06-27 13:38 20m - / - RA6OV -14 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
143200 -12 1243  BG4ACY UA3GJM -14 (x3)
144330  +5 2536  BG4ACY RM6OS -11 (x2)
20m 
UTC    dB Audio  Message
145600 -20 1934  BG4ACY RG3H KO95
145900  -7  878  BG4ACY DL1NCH JO31 (x3)
151130  -6  576  BG4ACY UB4CIA -07
151130 -14 1206  BG4ACY DL1NCH JO31
151200  -8  575  BG4ACY UB4CIA RR73
151200 -12 1206  BG4ACY DL1NCH JO31 (x5)
151730 -21 1428  BG4ACY PD0RDD JO22 (x2)
152430 -21 1427  BG4ACY PD0OQV JO22

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