KD4YTW — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving KD4YTW, decoded by SO8OO in southeastern Poland. 23 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-08-28.
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 23 FT8 messages attributed to KD4YTW 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 -17 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 23 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -17 dB
- Estimated 10th-90th percentile
- -22 to -15 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 5, 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 KD4YTW in decoded directed-looking exchanges:
Most frequent locator attributed to KD4YTW
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
- EM96 · 13 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 7,793 km (approx.)
- Last such locator decoded
- 2026-08-28 22:18 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 | KD4YTW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-28 22:34 | 20m | - / -6 | VE1WT | -12 / - | 2 | ✓ Closing fragment |
| 08-28 22:24 | 20m | - / -13 | EC3A | +12 / - | 2 | ✓ Closing fragment |
| 08-28 22:15 | 20m | - / -2 | IK5FCH | -6 / - | 3 | ✓ Closing fragment |
| 08-28 22:07 | 20m | -19 / - | WP4QEC | - / - | 2 | Partial capture |
| 08-28 22:04 | 20m | -17 / -17 | AA3B | +15 / -17 | 13 | Partial capture |
| 08-28 22:02 | 20m | -15 / -5 | LZ2INP | +22 / -11 | 6 | ✓ Full exchange observed |
| 08-28 22:00 | 20m | -16 / - | LA1SDX | - / -24 | 5 | ✓ Closing fragment |
| 08-28 21:59 | 20m | -18 / +3 | DL3RL | -7 / -6 | 4 | ✓ Full exchange observed |
| 08-28 21:38 | 20m | - / -15 | YO4NF | +3 / - | 2 | Partial capture |
| 08-28 21:24 | 20m | - / -11 | DK7ZT | -10 / - | 5 | Partial capture |
| 08-28 00:58 | 20m | - / +2 | KB1EFS | -3 / - | 18 | Partial capture |
| 08-24 22:44 | 20m | - / - | DK9ZQ | -3 / - | 5 | Partial capture |
| 08-24 22:28 | 20m | - / -15 | PT7OT | -9 / - | 2 | ✓ Closing fragment |
| 08-23 00:48 | 20m | - / -10 | 5Z4VJ | -9 / - | 3 | Partial capture |
| 08-22 23:22 | 20m | - / -5 | KB1HKN | -10 / - | 2 | Partial capture |
| 08-22 23:22 | 20m | - / - | DK9ZQ | +5 / - | 4 | Partial capture |
| 08-22 22:32 | 20m | - / -4 | DA1EA | +4 / - | 2 | ✓ Closing fragment |
| 08-21 23:37 | 20m | - / -23 | DK7ZT | -4 / - | 4 | Partial capture |
| 08-21 23:35 | 20m | - / - | IK4LZH | +1 / - | 2 | Partial capture |
| 08-21 23:15 | 20m | - / -17 | 9Y4C | -14 / - | 2 | Partial capture |
| 08-17 22:45 | 20m | - / -10 | D2UY | -9 / - | 2 | ✓ Closing fragment |
| 08-17 22:35 | 20m | - / -22 | DK7ZT | -16 / - | 5 | Partial capture |
| 08-17 22:34 | 20m | - / -1 | EA8UP | -12 / - | 2 | ✓ Closing fragment |
| 08-17 22:28 | 20m | - / -18 | D2UY | -11 / - | 2 | Partial capture |
| 08-17 22:15 | 20m | - / -16 | PI4DX | -14 / - | 3 | ✓ Closing fragment |
| 08-15 03:20 | 20m | - / -6 | 5B4AMX | -16 / - | 2 | ✓ Closing fragment |
| 08-11 04:21 | 20m | - / -18 | UN7LZ | +11 / - | 5 | Partial capture |
| 08-09 20:30 | 20m | - / -3 | EA4T | -17 / - | 2 | ✓ Closing fragment |
| 08-08 06:12 | 20m | - / - | PA3CPS | +1 / - | 2 | Partial capture |
| 08-08 05:42 | 20m | - / -12 | IK5PWQ | -3 / - | 2 | Partial capture |
| 08-07 22:24 | 20m | - / - | IK4LZH | -5 / - | 3 | Partial capture |
| 08-07 22:22 | 20m | - / - | DK9ZQ | -8 / - | 2 | Partial capture |
| 08-05 23:14 | 20m | - / - | DL1R | -2 / - | 7 | Partial capture |
| 07-27 05:44 | 20m | - / -10 | IW3RSW | -13 / - | 2 | ✓ Closing fragment |
| 07-27 02:38 | 20m | - / - | S52D | -13 / - | 4 | Partial capture |
| 07-27 01:23 | 20m | - / - | S52D | -2 / - | 4 | Partial capture |
| 07-27 01:16 | 20m | - / - | S52D | -10 / - | 2 | Partial capture |
| 07-27 00:30 | 20m | - / - | S52D | -12 / - | 2 | Partial capture |
| 07-26 23:26 | 20m | - / -12 | IK4LZH | -4 / - | 2 | Partial capture |
| 07-26 04:41 | 20m | - / -15 | HK3W | -18 / - | 2 | Partial capture |
| 07-26 04:41 | 20m | - / -16 | F4LNM | -18 / - | 2 | ✓ Closing fragment |
| 07-25 20:36 | 20m | - / -21 | EA4T | -6 / - | 3 | Partial capture |
| 07-25 20:29 | 20m | - / -20 | EA4T | -8 / - | 3 | Partial capture |
| 07-25 06:14 | 20m | - / -13 | F1PBZ | +11 / - | 2 | Partial capture |
| 07-25 06:06 | 20m | - / - | F4LNM | -12 / - | 3 | Partial capture |
| 07-25 05:47 | 20m | - / -4 | F6DZU | -4 / - | 2 | ✓ Closing fragment |
| 07-25 03:09 | 20m | - / -14 | RA3FY | -14 / - | 2 | ✓ Closing fragment |
| 07-25 02:46 | 20m | - / -12 | RV6FT | -19 / - | 7 | Partial capture |
| 07-25 02:43 | 20m | - / -9 | RU3DX | -6 / - | 4 | ✓ Closing fragment |
| 07-25 02:27 | 20m | - / - | IK4LZH | -5 / - | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 220900 +14 655 KD4YTW AA3B -17 (x2) 221145 -22 1443 AA3B KD4YTW EM96 221530 -6 1160 KD4YTW IK5FCH -02 (x3) 221700 -15 1443 KD4YTW DK7ZT -11 221815 -22 1443 SV1EAG KD4YTW EM96 222430 +12 584 KD4YTW EC3A -13 (x2) 222530 -8 1443 KD4YTW YO4NF -11 223400 -14 1245 KD4YTW VE1WT -06 (x2) 222915 -17 1077 KD4YTW IK8EQG -10 230400 -24 1949 KD4YTW VO1IV -19
UTC dB Audio Message 022900 -23 2050 KD4YTW IN3LHF -14 031530 -15 1758 KD4YTW EA3NG -21 (x3) 034630 -11 1925 KD4YTW IZ8VYU JN71 011130 -14 1904 KD4YTW DK7ZT -12 (x3) 013330 -7 2730 KD4YTW 3Z6I RR73 (x3) 013830 -14 1904 KD4YTW DK7ZT -13 (x3)
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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