DF4MC — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DF4MC, decoded by SO8OO in southeastern Poland. 86 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-30.
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 86 FT8 messages attributed to DF4MC as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (45%), followed by 80 m (17%) and 60 m (14%). Most decodes (85%) 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 -14 dB.
Overview
Bands
Last attributed message: 2026-08-30 10:16 UTC
Observed FT8 message patterns
- Attributed sample
- 86 messages
- Active dates
- 13 UTC dates
- Estimated median S/N
- -14 dB
- Estimated 10th-90th percentile
- -18 to -3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 30, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 22.
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 DF4MC 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 DF4MC
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
- JO43 · 52 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 964 km (approx.)
- Last such locator decoded
- 2026-08-30 10:16 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 | DF4MC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-30 13:54 | 40m | - / - | DA0RR | -9 / - | 3 | Partial capture |
| 08-30 10:10 | 20m | - / - | F4BYA | +9 / - | 2 | Partial capture |
| 08-26 11:59 | 20m | - / - | G7EVY | -12 / - | 5 | Partial capture |
| 08-18 19:03 | 80m | - / - | HA7TM | +17 / - | 3 | Partial capture |
| 08-18 18:34 | 40m | - / - | 9A4ZM | -7 / - | 3 | Partial capture |
| 08-17 17:02 | 40m | - / - | 9A4ZM | -7 / - | 3 | Partial capture |
| 07-31 19:14 | 60m | - / - | DD6ZV | -3 / - | 3 | Partial capture |
| 07-31 19:14 | 60m | - / -2 | F5RMK | -15 / - | 3 | ✓ Closing fragment |
| 07-31 19:08 | 60m | -4 / -1 | ON7GB | -4 / +9 | 7 | ✓ Full exchange observed |
| 07-31 19:08 | 60m | -4 / -8 | 8S7DL | -3 / -2 | 8 | ✓ Full exchange observed |
| 07-31 19:08 | 60m | -6 / +1 | ON7KEI | -18 / 0 | 6 | ✓ Full exchange observed |
| 07-31 19:07 | 60m | -4 / - | DL1UDO | -10 / +9 | 5 | ✓ Full exchange observed |
| 07-31 18:50 | 40m | - / - | DK7UY | -12 / - | 3 | Partial capture |
| 07-31 18:28 | 40m | -16 / - | OZ2LC | - / - | 2 | ✓ Closing fragment |
| 07-26 16:28 | 20m | - / -14 | MI0OBC | -10 / - | 7 | Partial capture |
| 07-15 19:27 | 20m | - / - | RL3K | -13 / - | 2 | Partial capture |
| 07-14 14:52 | 20m | - / - | DL1R | -2 / - | 5 | Partial capture |
| 07-14 05:48 | 40m | - / - | DL8WEM | -13 / - | 3 | Partial capture |
| 07-14 05:45 | 40m | - / -6 | DL2VN | -12 / - | 2 | ✓ Closing fragment |
| 07-14 05:43 | 40m | - / - | 9A4ZM | -16 / - | 2 | Partial capture |
| 07-14 05:43 | 40m | - / -18 | DK5UR | -10 / - | 2 | ✓ Closing fragment |
| 07-14 05:32 | 20m | - / - | UA3PAB | -16 / - | 4 | Partial capture |
| 07-14 05:22 | 40m | - / +5 | DL6UM | -5 / - | 3 | ✓ Closing fragment |
| 07-13 20:17 | 40m | - / - | 9A4ZM | -6 / - | 3 | Partial capture |
| 07-13 20:13 | 20m | - / -13 | TN8GD | -5 / - | 4 | Partial capture |
| 07-12 22:58 | 60m | - / - | HA7TM | -13 / - | 3 | Partial capture |
| 07-12 22:45 | 80m | - / - | DC8SG | +6 / - | 7 | Partial capture |
| 07-12 22:43 | 80m | - / - | DO9BAU | +7 / - | 12 | Partial capture |
| 07-12 22:43 | 80m | - / - | UA4FKT | +11 / - | 3 | Partial capture |
| 07-12 22:41 | 40m | - / - | F5RRS | -12 / - | 4 | Partial capture |
| 07-12 22:41 | 40m | - / - | 9A4ZM | -15 / - | 2 | Partial capture |
| 07-10 17:15 | 40m | -16 / - | YH2AZ | - / - | 2 | Partial capture |
| 07-10 06:51 | 40m | - / -7 | R2AL | -22 / - | 2 | Partial capture |
| 07-09 22:07 | 40m | -15 / - | A61DD | - / -7 | 3 | ✓ Closing fragment |
| 07-09 22:05 | 40m | -15 / - | MW3LFL | - / - | 2 | Partial capture |
| 07-09 22:02 | 80m | - / - | DO9BAU | +7 / - | 12 | Partial capture |
| 07-09 22:01 | 40m | - / - | F5RRS | -10 / - | 5 | Partial capture |
| 07-09 22:00 | 40m | -15 / - | LB9ZG | - / -5 | 2 | ✓ Closing fragment |
| 07-09 21:59 | 40m | - / - | F5PBG | -17 / - | 2 | Partial capture |
| 07-09 21:59 | 80m | - / +6 | DO1OAS | -8 / - | 6 | Partial capture |
| 07-09 21:55 | 80m | -11 / -12 | EA8UP | -8 / -2 | 9 | ✓ Full exchange observed |
| 07-09 21:53 | 80m | - / - | DK2LG | +14 / - | 2 | Partial capture |
| 07-09 21:53 | 80m | - / - | HB9MZI | -20 / - | 2 | Partial capture |
| 07-09 21:53 | 80m | - / - | DF5RA | +7 / - | 3 | Partial capture |
| 07-09 21:51 | 80m | - / - | DO9BAU | +1 / - | 11 | Partial capture |
| 07-09 21:51 | 80m | - / - | R2AL | +5 / - | 5 | Partial capture |
| 07-09 21:51 | 80m | -6 / -13 | RA3WY | +5 / -9 | 5 | ✓ Full exchange observed |
| 07-09 21:50 | 80m | -2 / 0 | DH2SK | +8 / +3 | 5 | ✓ Full exchange observed |
| 07-09 21:50 | 80m | - / - | UA4FKT | +10 / - | 2 | Partial capture |
| 07-09 19:55 | 40m | -15 / - | VJ6X | - / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 164000 -24 1976 DF4MC F5RRS JN36 164215 -13 2332 <...> DF4MC R-14 164500 -12 2639 DF4MC PA3BMB JO22 170245 -9 2327 DF4MC 9A4ZM JN86 (x3) 170415 -11 2529 DF4MC PA7ZZ JO22 183430 -7 2328 DF4MC 9A4ZM JN86 (x3) 101615 -19 2332 CQ DF4MC JO43 104130 -18 2332 DF4MC DF0WH JO43 135445 -7 2331 DF4MC DA0RR JO40 (x3)
UTC dB Audio Message 162930 -13 2434 DF4MC MI0OBC -14 (x5) 165300 -20 2369 <8B81JT> DF4MC R-09 115900 -11 2371 DF4MC G7EVY IO83 (x5) 101000 +12 2912 DF4MC F4BYA JN19 101015 -9 2371 CQ DF4MC JO43 101030 +6 2912 DF4MC F4BYA JN19 101045 -11 2370 CQ DF4MC JO43
UTC dB Audio Message 152345 -18 2384 CQ DF4MC JO43 (x2)
UTC dB Audio Message 224630 +4 2298 DF4MC DC8SG JO40 224700 +8 2002 DF4MC DO9BAU JO62 224700 +6 2298 DF4MC DC8SG JO40 224730 +8 2002 DF4MC DO9BAU JO62 224730 +4 2298 DF4MC DC8SG JO40 224800 +9 2002 DF4MC DO9BAU JO62 224800 +7 2298 DF4MC DC8SG JO40 224830 +6 2002 DF4MC DO9BAU JO62 224830 +8 2298 DF4MC DC8SG JO40 224900 +10 2002 DF4MC DO9BAU JO62 190145 +4 1263 DF4MC DB100FT R-12 190315 +17 2296 DF4MC HA7TM JN97 (x2) 190445 -6 1945 DF4MC IQ4JO JN63 190445 +14 2296 DF4MC HA7TM JN97
UTC dB Audio Message 191100 -5 2325 8S7DL DF4MC -02 191115 -2 1032 DF4MC 8S7DL R-08 191130 -3 2325 8S7DL DF4MC RR73 191145 -4 1032 DF4MC 8S7DL 73 191200 -2 2325 CQ DF4MC JO43 191215 -3 2326 DF4MC DD6ZV JO62 191230 -6 2325 CQ DF4MC JO43 191245 -1 2321 DF4MC 9A4ZM JN86 191300 -3 2325 CQ DF4MC JO43 191430 -15 1330 DF4MC F5RMK -02 191445 -2 2325 DF4MC DD6ZV JO62 191500 -15 1331 DF4MC F5RMK -02 191515 -1 2326 DF4MC DD6ZV JO62 191530 -14 1330 DF4MC F5RMK RR73 191545 -5 2326 DF4MC DD6ZV JO62
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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