DM5KM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DM5KM, decoded by SO8OO in southeastern Poland. 1,838 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 61 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-11.
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 1,838 FT8 messages attributed to DM5KM as the transmitting token by decoded message structure across 61 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (51%), followed by 80 m (22%) and 20 m (14%). The busiest six-hour window was 02:00-08:00 UTC, containing 43% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was +3 dB.
Overview
Bands
Last attributed message: 2026-09-11 19:37 UTC
Observed FT8 message patterns
- Attributed sample
- 1,838 messages
- Active dates
- 61 UTC dates
- Estimated median S/N
- +3 dB
- Estimated 10th-90th percentile
- -9 to +16 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 44, moderate (-15 to -9 dB) 165, strong (≥ -8 dB) 1,629.
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 DM5KM 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 DM5KM
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 · 613 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 964 km (approx.)
- Last such locator decoded
- 2026-09-11 19:37 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 | DM5KM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-11 19:27 | 160m | - / -8 | RK4FD | -4 / - | 4 | Partial capture |
| 09-11 19:21 | 160m | -6 / - | RA4CA | - / - | 2 | Partial capture |
| 09-11 05:54 | 80m | +3 / - | J38DX | - / -14 | 5 | Partial capture |
| 09-11 05:52 | 40m | +12 / - | K1JEA | - / -15 | 2 | Partial capture |
| 09-11 05:51 | 40m | +9 / - | N4DWD | - / -11 | 3 | ✓ Closing fragment |
| 09-11 05:49 | 40m | +11 / - | K5WVF | - / -15 | 3 | ✓ Closing fragment |
| 09-11 05:40 | 80m | - / - | EU6KA | -24 / - | 2 | Partial capture |
| 09-11 05:38 | 80m | +14 / - | 9Z4A | - / -15 | 5 | ✓ Closing fragment |
| 09-11 02:31 | 80m | +21 / - | 9Z4A | - / -22 | 3 | Partial capture |
| 09-11 02:30 | 80m | +20 / - | KF9UG | - / -16 | 2 | Partial capture |
| 09-11 02:29 | 80m | - / - | CT2HEX | -8 / - | 4 | Partial capture |
| 09-11 02:28 | 80m | +17 / - | EA5W | - / -9 | 2 | ✓ Closing fragment |
| 09-11 02:25 | 80m | +20 / - | CT7ARQ | -22 / -13 | 6 | ✓ Closing observed |
| 09-11 02:24 | 80m | +22 / +1 | OH6IH | -3 / -6 | 5 | ✓ Full exchange observed |
| 09-11 02:23 | 80m | +25 / +3 | DL5DQZ | +14 / 0 | 8 | ✓ Full exchange observed |
| 09-11 02:21 | 80m | +20 / 0 | EA1BQR | -4 / -1 | 8 | ✓ Full exchange observed |
| 09-11 02:16 | 60m | -16 / - | W3FAY | - / -8 | 2 | ✓ Closing fragment |
| 09-11 02:14 | 60m | -16 / - | K1WAT | - / -14 | 2 | ✓ Closing fragment |
| 09-11 02:12 | 60m | -5 / - | 9J2FI | - / -21 | 3 | ✓ Closing fragment |
| 09-11 02:00 | 60m | -6 / - | KZ8C | - / -9 | 2 | ✓ Closing fragment |
| 09-11 01:58 | 60m | -2 / - | N8OQ | - / -12 | 2 | ✓ Closing fragment |
| 09-11 01:57 | 60m | - / - | F1IQH | -6 / - | 3 | Partial capture |
| 09-11 01:55 | 60m | +15 / - | D44TWO | -21 / -5 | 5 | ✓ Closing observed |
| 09-10 18:30 | 160m | 0 / - | DA1KL | - / -7 | 4 | ✓ Closing fragment |
| 09-10 17:59 | 60m | +17 / - | M5AEH | - / -1 | 3 | ✓ Closing fragment |
| 09-10 16:12 | 60m | +5 / - | IK2UCK | -13 / -2 | 4 | ✓ Closing observed |
| 09-10 16:11 | 60m | +8 / +5 | IV3DSG | +3 / +2 | 5 | ✓ Full exchange observed |
| 09-10 16:10 | 60m | +4 / - | DL4YDR | - / +3 | 3 | ✓ Closing fragment |
| 09-10 10:09 | 40m | +7 / - | F1RIQ | - / -10 | 3 | ✓ Closing fragment |
| 09-10 10:08 | 40m | +6 / -18 | DL4KSD | -24 / - | 5 | Partial capture |
| 09-10 10:06 | 40m | +3 / - | OK2PM | - / - | 4 | Partial capture |
| 09-10 10:05 | 40m | +5 / - | GW4NOO | - / -2 | 3 | ✓ Closing fragment |
| 09-10 05:52 | 80m | - / - | OE3FVU | -1 / - | 6 | Partial capture |
| 09-10 05:49 | 80m | +16 / - | J38DX | - / -21 | 4 | Partial capture |
| 09-09 19:24 | 160m | +7 / -8 | RM3ZR | -4 / -16 | 11 | ✓ Full exchange observed |
| 09-09 19:24 | 160m | - / - | RU3DBT | -21 / - | 3 | Partial capture |
| 09-09 19:21 | 160m | 0 / - | DF9JL | - / -8 | 2 | ✓ Closing fragment |
| 09-09 19:21 | 160m | +5 / +5 | DL7UKM | -10 / -5 | 6 | ✓ Full exchange observed |
| 09-09 19:17 | 160m | +2 / +9 | DA6SHO | -13 / -5 | 7 | ✓ Full exchange observed |
| 09-09 19:14 | 160m | +9 / -9 | UA3TCJ | -10 / -15 | 6 | ✓ Full exchange observed |
| 09-09 03:53 | 40m | -2 / - | LU6WAV | - / -15 | 4 | ✓ Closing fragment |
| 09-09 03:50 | 40m | -3 / - | VE7SZ | - / -15 | 4 | Partial capture |
| 09-09 03:47 | 40m | -2 / -3 | R4OF | -10 / -13 | 5 | ✓ Full exchange observed |
| 09-09 03:46 | 40m | 0 / - | LZ1ZF | - / -9 | 3 | ✓ Closing fragment |
| 09-09 03:43 | 80m | - / - | DM2BM | -8 / - | 2 | Partial capture |
| 09-09 03:42 | 80m | - / +2 | F1PBZ | +6 / - | 2 | Partial capture |
| 09-09 03:37 | 80m | - / - | YO8XFU | +4 / - | 3 | Partial capture |
| 09-09 03:32 | 60m | -4 / - | KP4CC | - / -13 | 3 | ✓ Closing fragment |
| 09-09 03:29 | 60m | -14 / - | ER3UA | - / -1 | 2 | ✓ Closing fragment |
| 09-09 03:29 | 60m | - / - | UR9QQ | -2 / - | 7 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 192730 -4 601 DM5KM RM3ZR 73 192745 +9 600 RM3ZR DM5KM 73 182945 -3 852 SP8XGU DM5KM JO43 183045 -3 852 DA1KL DM5KM JO43 (x3) 183200 +8 993 DM5KM SP8XGU -09 183215 +2 852 DA1KL DM5KM 73 192100 -6 2101 RA4CA DM5KM JO43 (x2) 192715 -8 1086 DM5KM RK4FD R-08 (x4) 193745 +1 2101 OH5KNL DM5KM JO43
UTC dB Audio Message 023130 +20 549 9Z4A DM5KM -22 (x8) 054045 -24 1790 DM5KM EU6KA KO55 (x2) 055445 -2 2105 J38DX DM5KM -14 (x5)
UTC dB Audio Message 182615 +7 893 CQ DX DM5KM JO43 (x7) 054930 +10 450 K5WVF DM5KM -15 (x3) 055100 +5 450 N4DWD DM5KM -11 (x3) 055230 +13 450 K1JEA DM5KM -15 (x2)
UTC dB Audio Message 020100 -6 746 CQ DM5KM JO43 (x5) 021230 -2 948 9J2FI DM5KM -21 (x3) 021400 -14 1867 CQ DM5KM JO43 021430 -16 1867 K1WAT DM5KM -14 (x2) 021530 -18 1867 CQ DM5KM JO43 (x2) 021630 -16 1867 W3FAY DM5KM -08 (x2)
UTC dB Audio Message 123745 +7 280 HH2JR DM5KM -19 (x2) 124215 +1 1053 W4DXR DM5KM -18 (x3) 124445 -9 1570 HH2JR DM5KM -19 (x3) 124615 +3 1570 KC5OCH DM5KM R-17 (x4) 125130 +5 669 R9FFX DM5KM JO43 (x3)
UTC dB Audio Message 085100 -10 2652 DM5KM R7OV KN87 (x3) 074645 -1 2427 CQ DM5KM JO43 (x5) 074915 -11 2427 US2YW DM5KM -03 (x4) 073930 -21 2064 DM5KM F5HNQ IN98 074200 -15 2324 DM5KM F4AYI JN08 074700 -18 1805 DM5KM UA3ZQN KO90
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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