GM4FDM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving GM4FDM, decoded by SO8OO in southeastern Poland. 438 related FT8 messages, 175 CQ messages, observed on 20m, 10m, across 26 UTC dates. Heard between 2026-05-20 and 2026-08-14.
These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.
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Overview
Frequent QSO partners observed at SO8OO
Stations GM4FDM worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by GM4FDM
Approximate centre of IO75, decoded 2026-08-14 19:14 UTC. A transmitted locator is not proof of the operator's permanent location.
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 | GM4FDM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-14 19:14 | 20m | -5 / -6 | R3TY | -6 / - | 5 | ✓ Full exchange observed |
| 08-14 19:12 | 20m | 0 / - | YO9CX | - / -4 | 2 | ✓ Closing fragment |
| 08-14 19:10 | 20m | -5 / - | RN1QG | - / -4 | 3 | ✓ Closing fragment |
| 08-14 19:06 | 20m | -7 / -17 | CT1BFP | -14 / -8 | 21 | ✓ Full exchange observed |
| 08-14 19:05 | 20m | -6 / - | BH4ECL | - / -3 | 2 | Partial capture |
| 08-14 19:02 | 20m | -13 / - | JG5VFK | - / -14 | 2 | Partial capture |
| 08-14 18:58 | 20m | -7 / - | UA0LQE | - / -20 | 4 | ✓ Closing fragment |
| 08-14 18:57 | 20m | -12 / - | RZ4FWA | - / -9 | 2 | ✓ Closing fragment |
| 08-11 18:31 | 20m | +2 / - | OX3LX | - / -8 | 2 | ✓ Closing fragment |
| 08-11 18:29 | 20m | +4 / - | KS0CW | - / -19 | 3 | ✓ Closing fragment |
| 08-11 18:28 | 20m | +21 / - | R9SR | - / -12 | 2 | ✓ Closing fragment |
| 08-11 18:24 | 20m | +8 / - | A61SD | - / -12 | 5 | ✓ Closing fragment |
| 08-11 18:23 | 20m | +2 / - | <...> | - / -12 | 3 | Partial capture |
| 08-11 18:20 | 20m | 0 / - | JA8ECS | - / -22 | 2 | ✓ Closing fragment |
| 08-11 18:18 | 20m | -2 / - | BA4IAW | - / -13 | 2 | ✓ Closing fragment |
| 08-11 18:15 | 20m | - / - | ON3MOH | -2 / - | 3 | Partial capture |
| 08-11 18:14 | 20m | -4 / - | BI3UPU | - / -12 | 2 | ✓ Closing fragment |
| 08-11 18:13 | 20m | - / - | YO5PHL | -6 / - | 3 | Partial capture |
| 08-11 18:12 | 20m | +10 / - | UA0LQE | - / -12 | 2 | Partial capture |
| 08-09 17:28 | 20m | - / - | DH1KU | -16 / - | 8 | Partial capture |
| 08-09 17:21 | 20m | - / - | PA3MVD | -18 / - | 2 | Partial capture |
| 08-09 17:14 | 20m | - / - | OK2CNI | -8 / - | 3 | Partial capture |
| 08-09 17:01 | 20m | - / - | OE3JBS | -11 / - | 2 | Partial capture |
| 08-07 19:46 | 20m | - / - | RZ4FWA | -14 / - | 2 | Partial capture |
| 08-07 19:33 | 20m | -5 / - | LZ2EV | - / -8 | 2 | ✓ Closing fragment |
| 08-07 19:32 | 20m | -6 / - | JE1JBI | - / -16 | 2 | ✓ Closing fragment |
| 08-07 19:27 | 20m | +8 / - | BD4UJ | - / -10 | 2 | ✓ Closing fragment |
| 08-07 19:25 | 20m | +6 / - | BG3NQT | - / -11 | 2 | ✓ Closing fragment |
| 08-07 19:21 | 20m | -1 / - | TN8GD | - / -11 | 2 | ✓ Closing fragment |
| 08-07 15:31 | 20m | +10 / - | JG1PFJ | - / -18 | 3 | Partial capture |
| 08-07 15:27 | 20m | -2 / - | OX3LX | - / -14 | 2 | Partial capture |
| 08-06 19:24 | 20m | -9 / - | WA6GXQ | - / -17 | 3 | ✓ Closing fragment |
| 08-06 19:23 | 20m | -11 / - | W0OVX | - / -16 | 2 | ✓ Closing fragment |
| 08-06 19:14 | 20m | -12 / - | KB0PVB | - / -16 | 2 | Partial capture |
| 08-06 19:13 | 20m | -13 / - | K8DXR | - / -19 | 2 | Partial capture |
| 08-02 15:32 | 20m | -1 / - | UN8DSW | - / -16 | 3 | ✓ Closing fragment |
| 07-27 19:02 | 20m | -8 / - | C91RU | - / -14 | 2 | ✓ Closing fragment |
| 07-26 18:33 | 20m | +3 / - | ON3FGC | - / 0 | 2 | ✓ Closing fragment |
| 07-23 16:22 | 20m | -2 / - | VU4R | - / -11 | 12 | ✓ Closing fragment |
| 07-23 16:02 | 20m | -5 / - | VU4R | - / -14 | 22 | ✓ Closing fragment |
| 07-23 15:55 | 20m | -6 / - | YI1SAL | - / -18 | 5 | Partial capture |
| 07-20 18:26 | 10m | - / -7 | <...> | -22 / - | 2 | Partial capture |
| 07-20 18:26 | 10m | - / - | ON7EH | +1 / - | 3 | ✓ Closing fragment |
| 07-20 18:23 | 10m | - / - | F4DUZ | -20 / - | 3 | Partial capture |
| 07-16 19:28 | 20m | +18 / - | BA8BLK | - / -6 | 3 | Partial capture |
| 07-16 19:27 | 20m | +16 / - | BA4UFM | - / -13 | 2 | ✓ Closing fragment |
| 07-16 19:26 | 20m | +16 / - | BH5HIE | - / -6 | 2 | ✓ Closing fragment |
| 07-16 19:16 | 20m | +8 / - | ZC4RH | - / -13 | 6 | ✓ Closing fragment |
| 07-16 19:14 | 20m | +8 / - | 3A2MW | - / -21 | 2 | Partial capture |
| 07-14 18:36 | 20m | - / - | RY6O | -19 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 191145 -16 1618 GM4FDM CT1BFP R-17 191200 -8 1416 CT1BFP GM4FDM RR73 191215 -17 1617 GM4FDM CT1BFP 73 191230 -2 1416 YO9CX GM4FDM R-04 191245 -16 1617 GM4FDM CT1BFP IM59 191300 +2 1416 YO9CX GM4FDM RR73 191330 +4 1416 CQ GM4FDM IO75 191345 -14 1617 GM4FDM CT1BFP IM59 191400 -2 1416 CQ GM4FDM IO75 (x2) 191445 -7 1418 GM4FDM R3TY LO25 191500 -6 1416 R3TY GM4FDM +14 191515 -6 1418 GM4FDM R3TY R-06 191530 -4 1416 R3TY GM4FDM RR73 191545 -4 1418 GM4FDM R3TY 73
UTC dB Audio Message 181415 +4 2155 5H1KB GM4FDM IO75 181430 +9 386 GM4FDM 5H1KB -05 181445 +1 2155 5H1KB GM4FDM R+07 145715 -8 492 GM4FDM IK4LZH JN54 (x4) 182330 -21 1512 GM4FDM F4DUZ JN19 (x3) 182630 -21 1692 GM4FDM <...> -07 182630 +1 2646 GM4FDM ON7EH +38 (x2) 182730 -23 1692 GM4FDM <...> -07 182845 +0 2594 GM4FDM ON7EH JO20
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.