GB85ATC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: England

Receiver-side FT8 activity involving GB85ATC, decoded by SO8OO in southeastern Poland. 29 FT8 messages attributed to this token as transmitter, on 60m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-17 and 2026-09-18.

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 29 FT8 messages attributed to GB85ATC as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (100%). In this small sample, the estimated median decoder S/N was -10 dB; no usual signal pattern is inferred.

Overview

29
Messages attributed
2
UTC dates decoded
5
Active 15-min windows
-10 dB
Estimated median S/N

Bands

60m · 29
First attributed message: 2026-09-17
Last attributed message: 2026-09-18 18:25 UTC

Observed FT8 message patterns

Attributed sample
29 messages
Active dates
2 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-13 to -7 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 6.

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).

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 UTCBandGB85ATC S/NCounterpartCounterpart S/NMsgsCapture
09-18 18:58 60m - / -5 PE1NPS -10 / - 2 Partial capture
09-18 05:28 60m - / +6 G0BLB +4 / - 2 Partial capture
09-17 20:59 60m - / - EB3DBR -4 / - 4 Partial capture
09-17 20:27 60m - / -21 SP4OIK -14 / - 5 Partial capture
09-17 20:06 60m -10 / -8 PE1NPS -2 / +2 3 Partial capture
09-17 20:05 60m - / -20 LZ2VQ +8 / - 2 Partial capture
09-17 20:04 60m - / -13 SP4OIK -10 / - 6 Partial capture
09-17 20:04 60m -9 / - M0LTA - / 0 2 Partial capture
09-17 20:03 60m - / - PF1B -12 / - 2 Partial capture
09-17 20:02 60m - / -20 PA0EBG -15 / - 2 Partial capture
09-17 20:01 60m - / -12 DL7ACA +8 / - 3 Partial capture
09-17 19:58 60m -10 / - <...> -3 / - 12 ✓ Closing fragment
09-17 19:56 60m -10 / - PA7FB - / -8 2 Partial capture
09-17 19:52 60m -10 / - <...> -7 / - 5 ✓ Closing fragment
09-17 19:50 60m - / -6 DL5DQZ +10 / - 2 Partial capture
09-17 19:47 60m - / -4 EA1IOK -4 / - 2 Partial capture
09-17 19:43 60m -9 / - <...> -2 / - 8 ✓ Closing fragment
09-17 19:43 60m - / - OK1BN +12 / - 5 Partial capture
09-17 19:43 60m - / +7 PF1B -11 / - 3 Partial capture
09-17 19:29 60m - / +3 F5LMJ -3 / - 2 Partial capture
09-17 19:28 60m -13 / - <...> -4 / - 3 ✓ Closing fragment
09-17 19:24 60m - / -9 ES6DO -2 / - 4 Partial capture
09-17 19:23 60m - / -18 9A4ZM +6 / - 2 Partial capture
09-17 19:21 60m -10 / - <...> -5 / - 4 ✓ Closing fragment
09-17 19:21 60m - / -2 DK2CC -14 / - 3 Partial capture
09-17 19:20 60m - / - SP5MXY -9 / - 3 Partial capture
09-17 19:15 60m - / - 9A4ZM +2 / - 2 Partial capture
09-17 19:15 60m - / - EA1IOK -8 / - 5 Partial capture
09-17 19:15 60m - / - SP5MXY -6 / - 4 Partial capture
09-17 19:15 60m -8 / +10 OM5ZU +4 / -6 5 Partial capture
09-17 19:14 60m -9 / - <...> -6 / - 7 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m 
UTC    dB Audio  Message
200930 -16  538  <...> GB85ATC
202715  -9 2055  GB85ATC SP4OIK KO03 (x5)
205915  -1  471  GB85ATC EB3DBR JN11 (x4)
052815  +2  533  GB85ATC G0BLB IO81 (x2)
182530 -15 2147  DL2AOM GB85ATC -12
185800 -10 2033  GB85ATC PE1NPS JO22 (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.

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