YO3APJ — 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 YO3APJ, decoded by SO8OO in southeastern Poland. 793 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 46 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-11-05.
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 793 FT8 messages attributed to YO3APJ as the transmitting token by decoded message structure across 46 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (60%), followed by 40 m (16%) and 160 m (9%). Most decodes (79%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (91%); the estimated median was +2.7 dB.
Overview
Bands
Last attributed message: 2026-11-05 21:20 UTC
Observed FT8 message patterns
- Attributed sample
- 793 messages
- Active dates
- 46 UTC dates
- Estimated median S/N
- +2.7 dB
- Estimated 10th-90th percentile
- -8 to +11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 67, strong (≥ -8 dB) 723.
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 YO3APJ 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 YO3APJ
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
- KN34 · 441 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 721 km (approx.)
- Last such locator decoded
- 2026-11-05 21:19 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 | YO3APJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-05 21:17 | 40m | +5 / - | DL/N0PNG | - / -14 | 5 | Partial capture |
| 10-30 21:14 | 160m | +2 / - | <...> | - / - | 7 | Partial capture |
| 10-30 20:47 | 160m | -6 / - | 6W/IK2HKT | - / - | 12 | Partial capture |
| 10-30 20:08 | 40m | -8 / - | OX3AH | - / -22 | 2 | Partial capture |
| 10-30 20:06 | 40m | -7 / - | UA0LQE | - / -24 | 3 | ✓ Closing fragment |
| 10-30 19:58 | 40m | +1 / - | 9X5KM | - / - | 7 | Partial capture |
| 10-30 19:50 | 40m | +5 / - | UA3SCU | -6 / -3 | 3 | ✓ Full exchange observed |
| 10-30 04:33 | 60m | +2 / -20 | WA2VNV | -10 / - | 4 | Partial capture |
| 10-30 04:32 | 60m | +1 / - | K4YJ | - / - | 2 | Partial capture |
| 10-30 04:15 | 40m | - / - | TC8ATA | -6 / - | 9 | Partial capture |
| 10-30 04:14 | 40m | - / -4 | DH3KR | -2 / - | 3 | ✓ Closing fragment |
| 10-30 04:08 | 40m | - / +7 | 5B4AMX | -9 / - | 2 | ✓ Closing fragment |
| 10-30 00:51 | 40m | +4 / - | SP4WJ | - / -17 | 2 | ✓ Closing fragment |
| 10-30 00:49 | 40m | +6 / - | DK1TS | - / -11 | 2 | ✓ Closing fragment |
| 10-30 00:48 | 40m | +7 / - | R5AV | - / +3 | 2 | ✓ Closing fragment |
| 10-30 00:46 | 40m | +5 / - | A61DD | - / - | 3 | Partial capture |
| 10-29 21:42 | 60m | - / -14 | OZ7CL | +2 / - | 3 | ✓ Closing fragment |
| 10-29 20:22 | 160m | +10 / - | EA1JWG | - / -5 | 2 | ✓ Closing fragment |
| 10-29 20:21 | 160m | +10 / -15 | IU1IPB | -14 / +2 | 4 | ✓ Full exchange observed |
| 10-29 20:21 | 160m | - / - | RJ3DC | -8 / - | 2 | Partial capture |
| 10-29 20:13 | 160m | +6 / - | JH0GHZ | - / - | 8 | Partial capture |
| 10-29 20:12 | 160m | +7 / - | JI4JKO | - / - | 3 | Partial capture |
| 10-29 20:11 | 160m | +6 / +2 | DA6WM | -8 / -16 | 5 | ✓ Full exchange observed |
| 10-29 20:05 | 160m | +8 / +2 | DA6SHO | +6 / -17 | 6 | ✓ Full exchange observed |
| 10-29 20:05 | 160m | +5 / -7 | HB9AMO | +6 / +4 | 6 | ✓ Full exchange observed |
| 10-29 20:04 | 160m | +8 / - | SV1DKR | -17 / -12 | 4 | ✓ Closing observed |
| 10-15 20:49 | 60m | -5 / -1 | F4CTJ | -13 / -19 | 5 | ✓ Full exchange observed |
| 10-15 20:48 | 60m | -6 / -7 | G0ABI | 0 / +1 | 6 | ✓ Full exchange observed |
| 10-15 20:46 | 60m | -5 / -12 | F5RMK | -8 / -5 | 5 | ✓ Full exchange observed |
| 10-15 20:38 | 60m | -3 / - | A92AE | - / -20 | 9 | Partial capture |
| 10-15 20:33 | 60m | -5 / - | A92AE | - / - | 2 | Partial capture |
| 10-15 20:32 | 60m | -4 / -18 | YO8BDQ | -9 / -15 | 6 | ✓ Full exchange observed |
| 10-15 20:31 | 60m | 0 / - | SP9MOC | - / -1 | 2 | ✓ Closing fragment |
| 10-15 20:28 | 60m | -4 / - | TF1A | - / -11 | 4 | ✓ Closing fragment |
| 10-12 20:30 | 60m | - / -2 | EA4D | -19 / - | 2 | ✓ Closing fragment |
| 10-12 20:28 | 60m | -14 / - | HB9DDS | - / -11 | 2 | ✓ Closing fragment |
| 10-12 20:25 | 60m | - / +7 | F5PZT | -13 / - | 2 | ✓ Closing fragment |
| 10-09 01:36 | 60m | -10 / - | 8P6PD | - / -15 | 4 | ✓ Closing fragment |
| 10-08 04:00 | 60m | +5 / - | HI3QMT | - / - | 3 | Partial capture |
| 10-08 03:59 | 60m | +12 / - | KD4EBL | - / - | 2 | Partial capture |
| 10-08 03:57 | 60m | 0 / - | W8FSM | - / - | 2 | Partial capture |
| 10-08 03:56 | 60m | +6 / - | W3FAY | - / -17 | 2 | ✓ Closing fragment |
| 10-08 03:54 | 60m | +1 / - | KD4EBL | - / - | 4 | Partial capture |
| 10-08 03:52 | 60m | 0 / - | W8FSM | - / - | 2 | Partial capture |
| 10-07 20:51 | 60m | -2 / - | 9K2HS | - / - | 2 | Partial capture |
| 10-07 20:49 | 60m | 0 / -10 | GM3CQD | -9 / -21 | 7 | ✓ Full exchange observed |
| 10-05 04:42 | 60m | +3 / - | AI5WW | - / -13 | 3 | ✓ Closing fragment |
| 10-05 04:33 | 60m | +4 / - | ON1JP | - / -21 | 4 | ✓ Closing fragment |
| 10-05 04:27 | 60m | +10 / - | WB2SIH | - / -7 | 4 | ✓ Closing fragment |
| 10-05 04:25 | 60m | +5 / - | KD3CLB | - / -14 | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 200145 -2 553 9X5KM YO3APJ KN34 200315 -3 553 BG5JKZ YO3APJ -25 200345 -1 553 YC2BUZ YO3APJ KN34 200545 -12 553 CQ YO3APJ KN34 200615 -12 553 UA0LQE YO3APJ -24 (x3) 200845 -7 553 OX3AH YO3APJ KN34 (x2) 202015 -14 551 YC2BUZ YO3APJ 73 211745 +4 451 DL/N0PNG YO3APJ KN34 (x5)
UTC dB Audio Message 205115 -11 524 6W/IK2HKT YO3APJ KN34 (x8) 211445 +0 374 <...> YO3APJ KN34 (x7)
UTC dB Audio Message 204930 +0 285 YO3APJ G0ABI 73 204945 -7 2159 F4CTJ YO3APJ KN34 (x2) 205030 -13 819 YO3APJ F4CTJ -01 205045 -2 2159 F4CTJ YO3APJ R-19 (x2) 214200 +2 712 YO3APJ OZ7CL -14 (x3) 043245 +0 2759 K4YJ YO3APJ KN34 (x2) 043345 +2 2759 WA2VNV YO3APJ KN34 (x2) 043430 -9 480 YO3APJ WA2VNV -20 (x2)
UTC dB Audio Message 182615 +8 623 RI1FJZ YO3APJ KN34 (x13)
UTC dB Audio Message 094830 -8 2248 YO3APJ <...> +05
UTC dB Audio Message 174415 -13 960 BV1EK YO3APJ -16 (x2) 174615 -8 959 E24WBO YO3APJ KN34 174815 -10 879 E24YQO YO3APJ KN34 (x2) 175045 -8 879 <...> YO3APJ KN34 (x2) 175415 -10 876 E24WBO YO3APJ KN34 (x2) 071715 -1 2184 TJ1GD YO3APJ KN34 (x6)
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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