HK4YDT — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving HK4YDT, decoded by SO8OO in southeastern Poland. 17 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-13.
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 HK4YDT as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -24 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 17 messages
- Active dates
- 1 UTC dates
- Estimated median S/N
- -24 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 0.
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 HK4YDT in decoded directed-looking exchanges:
Most frequent locator attributed to HK4YDT
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
- FJ26 · 12 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 9,937 km (approx.)
- Last such locator decoded
- 2026-09-13 02:19 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 | HK4YDT S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-20 05:35 | 40m | - / -16 | DK7ZT | -9 / - | 3 | Partial capture |
| 09-20 01:39 | 40m | - / -14 | F5PBG | -6 / - | 2 | ✓ Closing fragment |
| 09-20 01:31 | 40m | - / 0 | ON1DGN | -5 / - | 4 | ✓ Closing fragment |
| 09-20 01:15 | 40m | - / -19 | F4VTR | -7 / - | 8 | Partial capture |
| 09-20 00:38 | 40m | - / - | F4BYA | +11 / - | 2 | Partial capture |
| 09-19 23:50 | 40m | - / -20 | EA3EDU | -5 / - | 5 | ✓ Closing fragment |
| 09-13 02:48 | 40m | - / -17 | EI2IXB | -3 / - | 2 | ✓ Closing fragment |
| 09-13 02:34 | 40m | - / -15 | HK4EIC | -3 / - | 3 | ✓ Closing fragment |
| 09-13 02:17 | 40m | -21 / -3 | EA4RKC | -14 / -16 | 4 | ✓ Full exchange observed |
| 09-13 02:14 | 40m | -24 / -21 | R2GF | -20 / - | 4 | ✓ Closing observed |
| 09-13 01:58 | 40m | -23 / -16 | R7HL | +7 / - | 4 | ✓ Closing observed |
| 09-13 01:55 | 40m | - / -20 | RZ6L | -10 / - | 4 | ✓ Closing fragment |
| 09-13 01:31 | 40m | - / -18 | RY7F | +10 / - | 5 | ✓ Closing fragment |
| 09-13 01:16 | 40m | - / -19 | YO4NF | -20 / - | 2 | ✓ Closing fragment |
| 09-13 01:06 | 40m | - / - | WA4UVH | -16 / - | 3 | Partial capture |
| 09-13 01:04 | 40m | - / -13 | EA3AKY | -1 / - | 3 | ✓ Closing fragment |
| 09-13 00:53 | 40m | - / -24 | EA3AKY | -6 / - | 4 | Partial capture |
| 09-13 00:50 | 40m | - / -20 | R5DT | -8 / - | 2 | Partial capture |
| 09-13 00:31 | 40m | - / - | KA9FOX | -6 / - | 2 | Partial capture |
| 09-13 00:26 | 40m | - / -6 | W1ATV | -2 / - | 3 | ✓ Closing fragment |
| 09-13 00:06 | 40m | - / -19 | MI7XHT | -12 / - | 2 | Partial capture |
| 09-12 23:43 | 40m | - / -13 | G0IUS | +5 / - | 2 | ✓ Closing fragment |
| 09-12 23:38 | 40m | - / -18 | F1PBZ | +7 / - | 3 | Partial capture |
| 09-12 23:27 | 40m | - / - | CT7AUT | -16 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 011830 -2 1573 HK4YDT F4VTR R-19 (x4) 013130 -5 1038 HK4YDT ON1DGN +00 (x4) 013930 -6 1626 HK4YDT F5PBG R-14 (x2) 032930 +3 2222 HK4YDT UA3GIE KO92 033930 -22 1090 HK4YDT HK4J R-02 053530 -9 1907 HK4YDT DK7ZT -16 (x3)
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