DM4KE — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DM4KE, decoded by SO8OO in southeastern Poland. 25 FT8 messages attributed to this token as transmitter, on 160m, 80m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-07-09.
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 25 FT8 messages attributed to DM4KE as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (52%), followed by 160 m (48%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-07-09 19:55 UTC
Observed FT8 message patterns
- Attributed sample
- 25 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -23 to -1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 14.
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 DM4KE in decoded directed-looking exchanges:
Most frequent locator attributed to DM4KE
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
- JO71 · 16 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 508 km (approx.)
- Last such locator decoded
- 2026-07-09 19:55 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 | DM4KE S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-09 20:02 | 20m | - / -1 | R4FDW | -9 / - | 3 | ✓ Closing fragment |
| 07-09 19:32 | 80m | -4 / - | OH/DL4SVA | - / - | 2 | Partial capture |
| 07-09 19:27 | 80m | -5 / -3 | SQ9KWY | +13 / +9 | 5 | ✓ Full exchange observed |
| 07-09 19:23 | 80m | -20 / -12 | SN93LOT | +5 / +7 | 3 | Partial capture |
| 07-08 21:01 | 160m | 0 / - | DG5BCR | - / - | 3 | Partial capture |
| 07-07 20:37 | 160m | -10 / -7 | 9A2AJ | +9 / 0 | 6 | ✓ Full exchange observed |
| 07-07 20:35 | 160m | -8 / -17 | DD3KF | -10 / +6 | 5 | ✓ Full exchange observed |
| 07-07 20:32 | 160m | -5 / -1 | DL8OH | +17 / - | 4 | ✓ Full exchange observed |
| 07-07 18:22 | 10m | - / -12 | ON2WI | -11 / - | 5 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 200230 -11 2211 DM4KE R4FDW -01 (x3)
UTC dB Audio Message 192345 +5 1645 DM4KE SN93LOT -12 192400 -17 1645 SN93LOT DM4KE R+07 192730 -9 965 SQ9KWY DM4KE JO71 192745 +12 969 DM4KE SQ9KWY -03 192800 +1 964 SQ9KWY DM4KE R+09 192815 +14 968 DM4KE SQ9KWY RR73 192830 -7 964 SQ9KWY DM4KE 73 192900 -2 829 DO2PY DM4KE JO71 193215 -4 603 OH/DL4SVA DM4KE JO71 (x2) 195300 -10 2292 CQ DM4KE JO71 (x5)
UTC dB Audio Message 203515 -7 2605 DL8OH DM4KE 73 203530 -8 932 DM4KE DD3KF JO30 203545 -8 2605 DD3KF DM4KE +06 203600 -11 932 DM4KE DD3KF R-17 203615 -7 932 DD3KF DM4KE RR73 203630 -10 932 DM4KE DD3KF 73 203715 -13 2458 9A2AJ DM4KE JO71 (x2) 203900 +13 2458 DM4KE 9A2AJ -07 203915 -10 2459 9A2AJ DM4KE R+00 203930 +5 2458 DM4KE 9A2AJ RR73 203945 -9 2459 9A2AJ DM4KE 73 210100 -1 694 DG5BCR DM4KE JO71 (x3)
UTC dB Audio Message 182230 -12 808 DM4KE ON2WI -12 (x5)
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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