GB8MMH — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving GB8MMH, decoded by SO8OO in southeastern Poland. 340 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-26 and 2026-06-30.
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 340 FT8 messages attributed to GB8MMH as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (63%), followed by 20 m (37%). Most decodes (84%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (75%); the estimated median was -19 dB.
Overview
Bands
Last attributed message: 2026-06-30 20:30 UTC
Observed FT8 message patterns
- Attributed sample
- 340 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- -19 dB
- Estimated 10th-90th percentile
- -22 to -13 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 256, moderate (-15 to -9 dB) 81, strong (≥ -8 dB) 3.
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 GB8MMH 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 GB8MMH
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
- IO92 · 219 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,606 km (approx.)
- Last such locator decoded
- 2026-06-30 20:30 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 UTC | Band | GB8MMH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 06-30 20:38 | 20m | - / - | M0AZI | -15 / - | 2 | Partial capture |
| 06-30 20:26 | 20m | - / - | EA3HMM | +6 / - | 4 | Partial capture |
| 06-30 15:39 | 20m | -18 / - | SM7HPK | - / -18 | 2 | Partial capture |
| 06-30 15:36 | 20m | -20 / -13 | YO8CRU | -6 / -10 | 4 | ✓ Full exchange observed |
| 06-30 15:32 | 20m | - / -4 | OS4K | -18 / - | 3 | Partial capture |
| 06-30 15:31 | 20m | - / -22 | I1RJP | +5 / - | 15 | Partial capture |
| 06-30 15:14 | 20m | - / - | I1RJP | +9 / - | 3 | Partial capture |
| 06-30 15:02 | 20m | - / - | UR5VPR | -16 / - | 2 | Partial capture |
| 06-30 15:01 | 20m | - / 0 | PD0HLA | -12 / - | 2 | Partial capture |
| 06-30 14:59 | 20m | -16 / - | RW3TY | - / -18 | 2 | ✓ Closing fragment |
| 06-30 14:57 | 20m | - / - | I1RJP | -2 / - | 10 | Partial capture |
| 06-30 14:57 | 20m | - / - | PA3BMB | -16 / - | 2 | ✓ Closing fragment |
| 06-30 02:16 | 20m | - / -5 | W6NWS | -10 / - | 3 | ✓ Closing fragment |
| 06-30 02:14 | 20m | - / - | OD5KU | +12 / - | 4 | Partial capture |
| 06-30 01:35 | 20m | - / - | K4YT | -9 / - | 4 | Partial capture |
| 06-30 00:49 | 20m | - / +1 | UN7JO | -12 / - | 4 | ✓ Closing fragment |
| 06-30 00:22 | 20m | -11 / - | HA7TM | - / -10 | 2 | ✓ Closing fragment |
| 06-30 00:18 | 20m | -13 / -1 | VE3XN | -17 / -9 | 6 | ✓ Full exchange observed |
| 06-30 00:16 | 20m | -12 / - | DJ0MAB | - / +1 | 2 | ✓ Closing fragment |
| 06-30 00:11 | 20m | -12 / - | KR4CCN | - / -19 | 7 | Partial capture |
| 06-29 16:16 | 20m | -16 / - | PD1AG | - / -15 | 3 | Partial capture |
| 06-29 16:13 | 20m | -12 / - | HA7TM | - / -10 | 3 | Partial capture |
| 06-29 16:10 | 20m | -12 / - | SN1WWA | - / -17 | 2 | ✓ Closing fragment |
| 06-29 16:03 | 20m | -17 / - | DM1AL | -19 / -12 | 4 | Partial capture |
| 06-29 16:01 | 20m | -17 / - | R1BDX | - / -14 | 3 | ✓ Closing fragment |
| 06-29 15:57 | 20m | -15 / - | RV3DBV | - / -20 | 3 | ✓ Closing fragment |
| 06-29 15:54 | 20m | -15 / - | HA3SR | - / -13 | 2 | ✓ Closing fragment |
| 06-29 15:52 | 20m | -14 / - | DB8BT | - / -7 | 2 | ✓ Closing fragment |
| 06-29 15:49 | 20m | - / -8 | F5URG | 0 / - | 6 | Partial capture |
| 06-29 15:47 | 20m | -15 / - | DO9OOD | - / -14 | 2 | ✓ Closing fragment |
| 06-29 02:26 | 40m | - / - | DK5UR | +2 / - | 2 | Partial capture |
| 06-29 01:42 | 40m | - / - | DK5UR | -2 / - | 3 | Partial capture |
| 06-29 01:17 | 40m | -18 / -3 | UA6LIK | -14 / -9 | 4 | ✓ Full exchange observed |
| 06-29 00:58 | 40m | -19 / - | EC3A | -23 / -3 | 2 | Partial capture |
| 06-29 00:58 | 40m | - / - | IK4LZH | -6 / - | 3 | Partial capture |
| 06-29 00:10 | 40m | - / - | IK4LZH | -4 / - | 3 | Partial capture |
| 06-29 00:10 | 40m | - / - | RA6ZS | -10 / - | 2 | Partial capture |
| 06-28 23:45 | 20m | -18 / -16 | M7HQE | -8 / -11 | 6 | ✓ Full exchange observed |
| 06-28 23:43 | 20m | -17 / - | M0HQB | - / -15 | 2 | ✓ Closing fragment |
| 06-28 23:34 | 20m | -10 / - | DJ0JG | - / -16 | 2 | ✓ Closing fragment |
| 06-28 23:32 | 20m | -16 / - | DH1HF | - / -13 | 2 | ✓ Closing fragment |
| 06-28 23:25 | 20m | -17 / - | UR5WCS | - / -9 | 3 | ✓ Closing fragment |
| 06-28 23:21 | 20m | -16 / - | M3SSS | - / -15 | 2 | ✓ Closing fragment |
| 06-28 23:20 | 20m | -16 / - | EA7ACX | - / -15 | 2 | ✓ Closing fragment |
| 06-28 23:13 | 40m | -18 / -6 | RA3WY | -11 / -4 | 4 | ✓ Full exchange observed |
| 06-28 23:11 | 40m | -21 / -7 | R3QX | -14 / - | 3 | ✓ Closing observed |
| 06-28 01:44 | 40m | -18 / - | EA4GRZ | - / -10 | 2 | ✓ Closing fragment |
| 06-28 01:32 | 40m | - / - | IK4LZH | -4 / - | 4 | Partial capture |
| 06-28 01:30 | 40m | -17 / 0 | PA3BUD | -14 / -6 | 4 | ✓ Full exchange observed |
| 06-28 01:15 | 40m | - / - | R3TAW | -8 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 153915 -19 1598 SM7HPK GB8MMH -18 153930 +4 301 GB8MMH I1RJP JN45 153945 -18 1598 SM7HPK GB8MMH -13 154030 +12 301 GB8MMH I1RJP R-22 (x3) 202415 -11 1598 CQ GB8MMH IO92 202600 +7 305 GB8MMH EA3HMM JN00 (x4) 202945 -14 1598 CQ GB8MMH IO92 (x2) 203830 -17 1421 GB8MMH M0AZI IO90 (x2)
UTC dB Audio Message 015030 -23 1562 CQ GB8MMH IO92 (x2) 015715 -4 2733 GB8MMH IQ4JO JN63 015800 -21 1562 CQ GB8MMH IO92 a1 (x4) 022315 +2 2733 GB8MMH IQ4JO JN63 022315 -1 389 GB8MMH DK5UR JO40 (x3) 023130 -24 1562 CQ GB8MMH IO92 023145 +2 2733 GB8MMH IQ4JO JN63 (x3)
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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