K4HXM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving K4HXM, decoded by SO8OO in southeastern Poland. 17 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-22.
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 17 FT8 messages attributed to K4HXM as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -12 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 17 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -12 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 2.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with K4HXM in decoded directed-looking exchanges:
Most frequent locator attributed to K4HXM
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
- FM07 · 10 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 7,591 km (approx.)
- Last such locator decoded
- 2026-08-22 22:42 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 | K4HXM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-27 22:43 | 20m | - / - | RL6MT | -4 / - | 2 | Partial capture |
| 08-27 22:42 | 20m | - / - | DL3MIB | +9 / - | 7 | Partial capture |
| 08-27 22:42 | 20m | - / -5 | SV5BYP | -12 / - | 4 | ✓ Closing fragment |
| 08-24 23:33 | 40m | - / -20 | IU0NAD | -7 / - | 3 | Partial capture |
| 08-23 12:00 | 20m | - / - | F1PPH | -4 / - | 9 | Partial capture |
| 08-22 22:40 | 20m | -12 / - | N0SNO | - / - | 3 | Partial capture |
| 08-16 19:33 | 20m | - / -14 | EA4T | -18 / - | 3 | ✓ Closing fragment |
| 08-16 19:23 | 20m | - / -8 | EA4T | -17 / - | 3 | Partial capture |
| 07-31 13:48 | 20m | - / - | F1PPH | -12 / - | 7 | Partial capture |
| 07-31 13:16 | 20m | - / - | DL4DBM | -12 / - | 2 | Partial capture |
| 07-29 19:40 | 20m | - / -8 | EA4T | -19 / - | 3 | Partial capture |
| 07-29 18:27 | 20m | - / -14 | EA4T | -21 / - | 3 | Partial capture |
| 07-03 20:09 | 20m | - / -16 | TM13COL | -8 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 233300 -1 2079 K4HXM IU0NAD JN62 (x3) 225900 -6 1200 K4HXM EA3LF JN11
UTC dB Audio Message 120445 +4 570 K4HXM F1PPH JN07 (x2) 224200 -18 2016 K4HXM SV5BYP KM46 224200 +7 1049 K4HXM DL3MIB JN57 224230 -13 2016 K4HXM SV5BYP KM46 224230 +8 1049 K4HXM DL3MIB JN57 224300 -8 2016 K4HXM SV5BYP R-05 224300 +9 1049 K4HXM DL3MIB JN57 224330 -7 2016 K4HXM SV5BYP 73 224330 -5 2527 K4HXM RL6MT LN08 224330 +7 1049 K4HXM DL3MIB JN57 224400 -4 2526 K4HXM RL6MT LN08 224400 +6 1049 K4HXM DL3MIB JN57 (x3)
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