HB10GBT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland

Receiver-side FT8 activity involving HB10GBT, decoded by SO8OO in southeastern Poland. 31,591 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 61 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-05.

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 31,591 FT8 messages attributed to HB10GBT as the transmitting token by decoded message structure across 61 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (46%), followed by 80 m (29%) and 20 m (21%). The busiest six-hour window was 01:00-07:00 UTC, containing 38% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

31,591
Messages attributed
61
UTC dates decoded
1,935
Active 15-min windows
-8 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-10-05 19:27 UTC

Observed FT8 message patterns

Attributed sample
31,591 messages
Active dates
61 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-17.6 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5,312, moderate (-15 to -9 dB) 9,828, strong (≥ -8 dB) 16,451.

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.

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 UTCBandHB10GBT S/NCounterpartCounterpart S/NMsgsCapture
10-06 04:34 80m - / -14 HA9OA +6 / - 2 Partial capture
10-06 01:02 80m - / -1 IZ2BKU 0 / - 2 Partial capture
10-06 00:28 80m - / - DH0BRO +7 / - 4 Partial capture
10-05 22:34 80m - / - DH3MFW -6 / - 2 Partial capture
10-05 21:31 80m - / - 9A3NM +6 / - 2 Partial capture
10-05 20:49 80m - / - EA2EWL -8 / - 5 Partial capture
10-05 20:42 80m - / -6 IK5CHL +2 / - 3 Partial capture
10-05 20:39 80m - / -16 EA2EWL -5 / - 4 Partial capture
10-05 20:21 80m - / - DL4KG -9 / - 2 Partial capture
10-05 19:34 80m - / - RA3ZH 0 / - 3 Partial capture
10-05 19:25 80m -24 / - TF4M - / -18 3 Partial capture
10-05 19:15 80m - / - SK0MT -1 / - 3 Partial capture
10-05 19:01 80m - / -10 IT9SMU -10 / - 2 Partial capture
10-05 18:59 80m - / -9 DL2SUD +10 / - 5 Partial capture
10-05 18:55 80m - / - RL3F -8 / - 2 Partial capture
10-05 18:46 80m - / - HA5CPN +6 / - 2 Partial capture
10-05 17:25 80m - / -10 G1XOW -10 / - 2 Partial capture
10-05 16:21 80m - / -9 R3MDH +4 / - 2 Partial capture
10-05 16:21 80m - / -12 UA6EC -4 / - 2 Partial capture
10-05 07:32 80m -22 / - <...> -5 / - 3 ✓ Closing fragment
10-05 07:25 80m -14 / -13 OE6TNO -5 / -21 20 Partial capture
10-05 07:24 80m - / -7 DL1DH -18 / - 2 Partial capture
10-05 06:52 80m - / -2 IU3IOV -17 / - 2 Partial capture
10-05 06:51 80m -12 / - <...> - / - 2 ✓ Closing fragment
10-05 06:26 80m -24 / - <...> +7 / - 2 ✓ Closing fragment
10-05 06:23 80m -17 / - HA8UM - / -18 4 Partial capture
10-05 06:15 80m -13 / - EA4LW - / -18 5 Partial capture
10-05 05:49 80m -14 / - <...> - / - 2 ✓ Closing fragment
10-05 05:48 80m -16 / -6 KE4EB -16 / -3 8 ✓ Full exchange observed
10-05 05:45 80m - / - SQ8GBG +14 / - 12 Partial capture
10-05 05:36 80m - / - DH0KAI -14 / - 5 Partial capture
10-05 05:34 80m -6 / - K0KT - / -19 2 Partial capture
10-05 05:29 80m -17 / - <...> -3 / - 2 ✓ Closing fragment
10-05 05:25 80m -12 / 0 SP5GEO +8 / -11 5 ✓ Full exchange observed
10-05 05:23 80m - / - HB9HBZ -10 / - 4 Partial capture
10-05 05:19 80m -5 / - <...> -7 / - 2 ✓ Closing fragment
10-05 05:19 80m - / -12 DG1KFR -11 / - 3 Partial capture
10-05 05:13 80m -8 / - <...> 0 / - 4 ✓ Closing fragment
10-05 05:11 80m -7 / - <...> +10 / - 2 ✓ Closing fragment
10-05 05:10 80m -7 / - SP9JBP - / -7 2 Partial capture
10-05 05:06 80m -5 / - <...> +5 / - 3 ✓ Closing fragment
10-05 04:48 80m -8 / - AA7A - / -19 2 Partial capture
10-05 04:40 80m -8 / - G0ULG - / -22 2 Partial capture
10-05 04:39 80m -5 / - <...> +7 / - 3 ✓ Closing fragment
10-05 04:38 80m -10 / - S50R +5 / +7 2 Partial capture
10-05 04:24 80m -1 / - <...> -5 / - 2 ✓ Closing fragment
10-05 04:12 80m +3 / +8 HA5CPN -10 / -6 3 Partial capture
10-05 04:11 80m 0 / - <...> +2 / - 3 ✓ Closing fragment
10-05 03:24 80m -1 / - IQ9SZ - / - 5 Partial capture
10-05 03:04 80m +3 / - <...> -1 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m
UTC    dB Audio  Message
213145  +6 2235  HB10GBT 9A3NM R+11
220245 -10 1963  HB10GBT YO6LM R+01
223400  -4 2220  HB10GBT DH3MFW JN58 (x2)
002630 +14  948  HB10GBT YO4NF -08
002700 +17  946  HB10GBT 9A4ZM JN86
002800  +9  949  HB10GBT DH0BRO JO62 (x4)
003845  -5 1259  HB10GBT UT2UB KO50
010245  -1 1264  HB10GBT IZ2BKU JN45 (x2)
043415  +7 2953  HB10GBT HA9OA KN08 (x2)
10m
UTC    dB Audio  Message
105645  -9  966  PY2GN HB10GBT -18 (x3)
111145 -14  965  EA5ZF HB10GBT R+14
111500 -12  965  HB10GBT DL3MML R-07 (x5)
113800 -10  965  HB10GBT PD8RB JG32 (x3)
114000 -11  965  HB10GBT <...> 73
121500 -14  965  HB10GBT PD0PWH R+07
134145  -1 2824  HB10GBT <...> 73
40m
UTC    dB Audio  Message
093230 -10 2595  HB10GBT DH7TS JO62 (x2)
093830 -19 1472  CQ HB10GBT
100315 +10  585  HB10GBT SP9MQS JN99
120215  -4  882  HB10GBT SP2ADY JO84 (x2)
124945 -16 1633  HB10GBT SP2TQQ JO94
134945  -2 1838  HB10GBT OK2BPU JN89 (x6)
162045  -1 2071  HB10GBT DL8TV JN49 (x2)
20m
UTC    dB Audio  Message
201100 -15 1714  <...> HB10GBT 73
201200 -20 1714  CQ HB10GBT (x4)
201415  -1 1714  HB10GBT IU3BIX JN65
201515  -8 1557  HB10GBT <...> 73
201845 -10 1714  HB10GBT EB4DMH IN80 (x2)
203500 -21 1714  CQ HB10GBT
203630 -12 1714  JA2ORW HB10GBT -18 (x3)
203800 -13 1714  <...> HB10GBT RR73
203830 -24 1714  CQ HB10GBT

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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