F4MMU — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving F4MMU, decoded by SO8OO in southeastern Poland. 223 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 30 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-18.
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 223 FT8 messages attributed to F4MMU as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (63%), followed by 20 m (37%). Several six-hour UTC windows tied for the largest share (53%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13.4 dB.
Overview
Bands
Last attributed message: 2026-10-18 11:42 UTC
Observed FT8 message patterns
- Attributed sample
- 223 messages
- Active dates
- 30 UTC dates
- Estimated median S/N
- -13.4 dB
- Estimated 10th-90th percentile
- -23 to -3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 95, moderate (-15 to -9 dB) 65, strong (≥ -8 dB) 63.
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 F4MMU 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 F4MMU
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
- JN26 · 116 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,298 km (approx.)
- Last such locator decoded
- 2026-10-18 11:41 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 | F4MMU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-18 11:41 | 10m | -22 / - | RM7M | - / +2 | 2 | ✓ Closing fragment |
| 10-17 11:49 | 10m | - / +2 | CS7BPG | -10 / - | 2 | Partial capture |
| 10-06 17:25 | 10m | -18 / - | DK2CI | - / -1 | 2 | ✓ Closing fragment |
| 10-06 17:23 | 10m | -20 / - | EA1AHP | - / -2 | 2 | ✓ Closing fragment |
| 10-06 17:18 | 10m | -14 / - | LU1FHM | - / -11 | 3 | ✓ Closing fragment |
| 10-04 14:25 | 10m | - / - | 4Z1BO | -19 / - | 2 | Partial capture |
| 10-03 14:50 | 10m | - / 0 | 4Z5AY | -2 / - | 2 | Partial capture |
| 08-31 06:15 | 20m | - / - | R6LE | +20 / - | 2 | Partial capture |
| 08-28 09:34 | 10m | -22 / +5 | IK2YYO | -14 / -5 | 5 | ✓ Full exchange observed |
| 08-28 08:15 | 10m | -18 / - | HB0WR | - / - | 2 | Partial capture |
| 08-28 08:13 | 10m | -20 / +6 | DL3MIB | +2 / +3 | 5 | ✓ Full exchange observed |
| 08-28 08:12 | 10m | -22 / - | DN9SGE | - / -6 | 2 | ✓ Closing fragment |
| 08-25 05:44 | 20m | +5 / - | SP5SE | - / -18 | 3 | ✓ Closing fragment |
| 08-25 05:43 | 20m | - / -18 | F1PBZ | -1 / - | 2 | Partial capture |
| 08-25 05:41 | 20m | +8 / - | ZL1RPC | - / - | 2 | Partial capture |
| 08-25 05:38 | 20m | +4 / - | VK4BM | - / - | 2 | Partial capture |
| 08-22 05:38 | 20m | -2 / - | ZL3OY | - / - | 2 | Partial capture |
| 08-22 05:35 | 20m | +4 / - | VK3JMA | - / - | 2 | Partial capture |
| 08-22 05:27 | 20m | -10 / - | VK2ZZY | - / -17 | 2 | ✓ Closing fragment |
| 08-17 09:33 | 10m | - / - | F5NIB | +1 / - | 4 | Partial capture |
| 08-15 20:01 | 20m | -7 / - | K8USN | - / -20 | 3 | Partial capture |
| 08-15 20:00 | 20m | -8 / - | SA0WAE | - / -8 | 2 | ✓ Closing fragment |
| 08-15 19:57 | 20m | -9 / - | DJ0MAB | - / -11 | 3 | Partial capture |
| 08-15 19:56 | 20m | - / -5 | OE9RWH | -13 / - | 3 | ✓ Closing fragment |
| 08-15 19:53 | 20m | -10 / -14 | HS0ZOY | -3 / -4 | 3 | ✓ Full exchange observed |
| 08-15 19:49 | 20m | -6 / - | <...> | - / -16 | 2 | Partial capture |
| 08-15 19:42 | 20m | - / +3 | CS8ABF | -4 / - | 2 | ✓ Closing fragment |
| 08-15 19:39 | 20m | -9 / - | SP6FCQ | - / -10 | 3 | ✓ Closing fragment |
| 08-10 16:27 | 10m | - / - | SV0LS | -10 / - | 2 | Partial capture |
| 08-09 12:01 | 10m | -22 / - | G4MQL | - / -10 | 2 | ✓ Closing fragment |
| 07-31 05:58 | 10m | -19 / - | 4X1AJ | - / -11 | 3 | ✓ Closing fragment |
| 07-31 05:56 | 10m | -21 / - | HS0ZOY | - / -13 | 3 | ✓ Closing fragment |
| 07-30 20:16 | 10m | -20 / - | HI8UD | - / -14 | 2 | Partial capture |
| 07-30 13:02 | 10m | -23 / - | SV1EKI | - / -12 | 2 | ✓ Closing fragment |
| 07-27 19:53 | 10m | -21 / - | PY2BZZ | - / - | 2 | ✓ Closing fragment |
| 07-27 19:23 | 10m | -20 / - | PU2XEE | - / -11 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 172515 -15 1595 CQ F4MMU JN26 172545 -19 1595 DK2CI F4MMU -01 (x2) 175715 -14 1595 CQ F4MMU JN26 (x2) 115145 -24 1596 RV6F F4MMU -14 114530 -12 1591 F4MMU CS7BPG IN51 (x4) 113900 -20 1591 WP3UT F4MMU -09 114000 -24 1590 CQ F4MMU JN26 (x2) 114130 -21 1591 RM7M F4MMU R+02 (x2)
UTC dB Audio Message 054300 +0 1580 CQ F4MMU JN26 054315 +3 2772 F4MMU F1PBZ -18 054330 +9 1580 CQ F4MMU JN26 054345 -5 2772 F4MMU F1PBZ -18 054400 +8 1580 CQ F4MMU JN26 054430 +10 1580 SP5SE F4MMU -18 054515 -8 1579 F4MMU RW6HP LN14 054600 +8 1580 SP5SE F4MMU RR73 (x2) 055030 +9 1580 CQ F4MMU JN26 055100 +8 1580 SA3KAK F4MMU -13 055345 +8 1580 XE2V F4MMU JN26 061030 -5 3023 F4MMU OA1F -17 061515 +21 2110 F4MMU R6LE LN07 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee