OK4HM — 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 OK4HM, decoded by SO8OO in southeastern Poland. 77 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-11-02.
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 77 FT8 messages attributed to OK4HM as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (69%), followed by 40 m (18%) and 20 m (13%). Several six-hour UTC windows tied for the largest share (95%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was -3 dB.
Overview
Bands
Last attributed message: 2026-11-02 18:47 UTC
Observed FT8 message patterns
- Attributed sample
- 77 messages
- Active dates
- 8 UTC dates
- Estimated median S/N
- -3 dB
- Estimated 10th-90th percentile
- -11 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 65.
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 OK4HM 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 OK4HM
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
- JO80 · 64 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 347 km (approx.)
- Last such locator decoded
- 2026-11-02 18:47 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 | OK4HM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-02 18:42 | 80m | +1 / - | RU4CK/P | - / - | 9 | Partial capture |
| 11-02 18:32 | 80m | -4 / - | RU4CK/P | - / - | 15 | Partial capture |
| 11-02 18:18 | 80m | -6 / - | RU4CK/P | - / - | 14 | Partial capture |
| 11-02 18:18 | 80m | -9 / - | R330CF | - / - | 3 | Partial capture |
| 10-29 18:20 | 40m | - / -2 | UA4FEN | +2 / - | 2 | ✓ Closing fragment |
| 10-29 18:13 | 80m | +6 / - | JA4FKX | - / - | 3 | Partial capture |
| 09-21 18:17 | 40m | 0 / - | F4IIX | - / -2 | 2 | ✓ Closing fragment |
| 09-21 18:15 | 40m | 0 / -13 | UT0IN | +7 / +5 | 5 | ✓ Full exchange observed |
| 09-21 18:14 | 40m | +1 / - | GJ0KYZ | - / - | 2 | Partial capture |
| 09-21 17:21 | 40m | 0 / - | JR1UTC | - / -11 | 4 | ✓ Closing fragment |
| 09-19 19:20 | 80m | -4 / +3 | RA2FU | +1 / - | 2 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 183730 +2 1801 RU4CK/P OK4HM JO80 (x4) 184130 -8 1801 <R330CF> OK4HM JO80 184230 +1 1800 RU4CK/P OK4HM JO80 (x9) 184730 +6 1800 <R330CF> OK4HM JO80
UTC dB Audio Message 172115 -1 1861 JR1UTC OK4HM JO80 (x4) 181400 +1 1862 GJ0KYZ OK4HM JO80 (x2) 181515 +9 459 OK4HM UT0IN -13 (x2) 181600 +0 1862 UT0IN OK4HM R+05 181615 +8 459 OK4HM UT0IN RR73 181630 +0 1862 UT0IN OK4HM 73 181700 +0 1862 F4IIX OK4HM -02 (x2) 182030 -1 293 OK4HM UA4FEN -02 (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.
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