GM3JIM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving GM3JIM, decoded by SO8OO in southeastern Poland. 1,164 FT8 messages attributed to this token as transmitter, on 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-08-01.
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 1,164 FT8 messages attributed to GM3JIM as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (66%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.
Overview
Bands
Last attributed message: 2026-08-01 11:19 UTC
Observed FT8 message patterns
- Attributed sample
- 1,164 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -11 dB
- Estimated 10th-90th percentile
- -18 to -1.9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 247, moderate (-15 to -9 dB) 512, strong (≥ -8 dB) 405.
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 GM3JIM 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 GM3JIM
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
- IO85 · 504 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,769 km (approx.)
- Last such locator decoded
- 2026-07-25 19:40 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 | GM3JIM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-01 12:07 | 20m | - / - | HB9CEY | -12 / - | 2 | Partial capture |
| 08-01 11:56 | 20m | - / -18 | DH2AP | -12 / - | 2 | ✓ Closing fragment |
| 08-01 10:55 | 20m | - / -12 | R7MP | -9 / - | 3 | ✓ Closing fragment |
| 08-01 10:11 | 20m | - / -1 | IN3PBO | -4 / - | 2 | Partial capture |
| 08-01 09:32 | 20m | -13 / - | W4HTP | - / -4 | 2 | Partial capture |
| 08-01 09:21 | 20m | -7 / - | S54ZGA | -9 / -2 | 3 | ✓ Closing observed |
| 08-01 09:17 | 20m | -7 / - | K5RSB | - / -15 | 4 | ✓ Closing fragment |
| 08-01 09:07 | 20m | -8 / +5 | F4HSB | -22 / 0 | 4 | ✓ Full exchange observed |
| 08-01 08:56 | 20m | - / -13 | RZ4FWA | -19 / - | 4 | ✓ Closing fragment |
| 07-31 23:12 | 20m | -8 / - | KD2TOW | - / -2 | 2 | Partial capture |
| 07-31 23:07 | 20m | -16 / - | W4HTP | - / 0 | 2 | Partial capture |
| 07-31 23:01 | 20m | -13 / - | W4HTP | - / -5 | 2 | Partial capture |
| 07-31 22:58 | 20m | -18 / - | W4WN | - / - | 2 | ✓ Closing fragment |
| 07-31 22:57 | 20m | -19 / - | W4HTP | - / -9 | 2 | Partial capture |
| 07-31 22:48 | 20m | -18 / - | PY2GIG | - / -16 | 2 | Partial capture |
| 07-31 22:45 | 20m | -20 / - | UI5A | - / -12 | 2 | Partial capture |
| 07-31 22:41 | 20m | -17 / - | KR4IJW | - / -6 | 4 | ✓ Closing fragment |
| 07-31 22:39 | 20m | -10 / - | W4HV | - / -9 | 2 | ✓ Closing fragment |
| 07-31 22:29 | 20m | -14 / - | KH2AR | - / -12 | 2 | ✓ Closing fragment |
| 07-31 22:20 | 20m | -14 / - | KQ4DSC | - / -2 | 2 | ✓ Closing fragment |
| 07-31 22:17 | 20m | -14 / - | NB2E | - / -10 | 2 | Partial capture |
| 07-31 22:16 | 20m | -15 / - | WC2D | - / -17 | 4 | ✓ Closing fragment |
| 07-31 22:13 | 20m | -16 / - | K9GI | - / -11 | 2 | ✓ Closing fragment |
| 07-31 22:12 | 20m | -12 / - | AK0SK | - / -6 | 2 | Partial capture |
| 07-31 21:57 | 20m | -18 / - | KA1BJX | - / -9 | 3 | ✓ Closing fragment |
| 07-31 21:53 | 20m | -19 / - | KF8WX | - / -8 | 3 | ✓ Closing fragment |
| 07-31 21:51 | 20m | -14 / - | VA3MBT | - / -1 | 2 | ✓ Closing fragment |
| 07-31 21:47 | 20m | -14 / - | DK2SP | - / - | 2 | ✓ Closing fragment |
| 07-31 21:46 | 20m | -19 / - | KC3IKC | - / -13 | 2 | Partial capture |
| 07-31 21:41 | 20m | -18 / -16 | SV5BYP | -17 / -11 | 8 | ✓ Full exchange observed |
| 07-31 21:38 | 20m | -17 / - | KX9A | - / -8 | 2 | Partial capture |
| 07-31 20:50 | 20m | -14 / - | AE4DW | - / -12 | 2 | Partial capture |
| 07-31 20:48 | 20m | -16 / - | F4MZI | - / -19 | 2 | Partial capture |
| 07-31 20:47 | 20m | -18 / - | RX9ABI | - / +6 | 2 | ✓ Closing fragment |
| 07-31 20:45 | 20m | -19 / - | KA0UAY | - / -3 | 2 | ✓ Closing fragment |
| 07-31 20:44 | 20m | - / -15 | F4MZI | -6 / - | 2 | Partial capture |
| 07-31 20:44 | 20m | -17 / - | K4CC | - / -14 | 2 | Partial capture |
| 07-31 20:40 | 20m | -18 / - | JH0AHI | - / -1 | 3 | ✓ Closing fragment |
| 07-31 20:39 | 20m | -19 / - | K9STL | - / -9 | 4 | ✓ Closing fragment |
| 07-31 20:23 | 20m | -14 / - | IW5ABF | - / -4 | 2 | ✓ Closing fragment |
| 07-31 20:21 | 20m | - / -3 | RG2T | -10 / - | 4 | Partial capture |
| 07-31 20:02 | 20m | -17 / - | DL2FX | - / 0 | 7 | Partial capture |
| 07-31 19:59 | 20m | -14 / - | K0RJV | - / -15 | 2 | ✓ Closing fragment |
| 07-31 19:58 | 20m | -11 / - | G8NJL | -23 / - | 2 | ✓ Closing observed |
| 07-31 19:54 | 20m | -14 / - | GE3ZQQ | - / +1 | 2 | ✓ Closing fragment |
| 07-31 19:52 | 20m | -17 / - | HA3GX | - / -12 | 3 | ✓ Closing fragment |
| 07-31 19:43 | 20m | - / -3 | F4JHT | -23 / - | 2 | Partial capture |
| 07-31 19:37 | 20m | -14 / - | ER1NM | - / 0 | 2 | ✓ Closing fragment |
| 07-31 19:33 | 20m | -17 / -2 | UB3FAT | -20 / -18 | 3 | Partial capture |
| 07-31 19:32 | 20m | -16 / - | UR3UI | - / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 102600 -11 2626 CQ GM3JIM (x3) 103230 -12 2625 DL1HXA GM3JIM RR73 105545 -5 1360 GM3JIM R7MP LN17 (x3) 111830 -10 2625 CQ GM3JIM 111900 -9 2625 KG7QVK GM3JIM -08 114045 -13 2626 GM3JIM M0XXJ IO91 114545 -11 2625 GM3JIM M7TLM R+06 115615 -10 2003 GM3JIM DH2AP R-18 (x2) 120715 -12 2618 GM3JIM HB9CEY JN37 (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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