KJ4QVJ — 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 KJ4QVJ, decoded by SO8OO in southeastern Poland. 271 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-10.
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 271 FT8 messages attributed to KJ4QVJ as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (61%), followed by 80 m (27%) and 40 m (12%). Most decodes (99%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-10-10 05:16 UTC
Observed FT8 message patterns
- Attributed sample
- 271 messages
- Active dates
- 22 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -20 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 78, moderate (-15 to -9 dB) 78, strong (≥ -8 dB) 115.
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 KJ4QVJ 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 KJ4QVJ
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
- EL98 · 104 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,464 km (approx.)
- Last such locator decoded
- 2026-10-10 04:49 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 | KJ4QVJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-18 04:33 | 160m | - / -23 | ON8DM | -2 / - | 2 | Partial capture |
| 10-18 04:28 | 160m | - / -14 | DL1RWN | +7 / - | 3 | ✓ Closing fragment |
| 10-18 04:12 | 160m | - / -17 | IW0FFK | +12 / - | 2 | ✓ Closing fragment |
| 10-18 03:51 | 80m | - / -20 | DL2VEL | +5 / - | 7 | ✓ Closing fragment |
| 10-18 03:46 | 80m | - / 0 | F4CTJ | +2 / - | 2 | ✓ Closing fragment |
| 10-18 03:42 | 80m | - / -25 | F4HIK | +3 / - | 3 | ✓ Closing fragment |
| 10-18 03:36 | 80m | - / -9 | SP3SLA | -9 / - | 2 | ✓ Closing fragment |
| 10-18 03:29 | 80m | - / - | F4FPR | -11 / - | 3 | Partial capture |
| 10-18 03:17 | 40m | - / -9 | G8KHF | -2 / - | 2 | ✓ Closing fragment |
| 10-18 03:11 | 40m | - / - | S52UF | -10 / - | 2 | Partial capture |
| 10-18 03:11 | 40m | - / - | UA3GDJ | -10 / - | 2 | Partial capture |
| 10-18 03:05 | 40m | - / -12 | 4X1UF | -6 / - | 7 | ✓ Closing fragment |
| 10-10 05:38 | 40m | - / -5 | F6HUK | 0 / - | 2 | ✓ Closing fragment |
| 10-10 05:29 | 40m | - / - | PB2A | -12 / - | 4 | Partial capture |
| 10-10 05:27 | 40m | - / - | F5RAV | -11 / - | 2 | Partial capture |
| 10-10 05:25 | 40m | - / - | PD1AC | -6 / - | 4 | Partial capture |
| 10-10 05:20 | 40m | - / - | PD1AC | -15 / - | 4 | Partial capture |
| 10-10 05:18 | 40m | - / - | F4CWZ | +1 / - | 2 | Partial capture |
| 10-10 05:15 | 40m | - / - | PB2A | -8 / - | 2 | Partial capture |
| 10-10 05:14 | 40m | - / - | PE1NMM | -4 / - | 4 | Partial capture |
| 10-10 04:54 | 40m | - / -15 | I8JJB | -8 / - | 2 | Partial capture |
| 10-10 04:49 | 40m | -10 / -1 | F4IFO | -10 / - | 3 | ✓ Closing observed |
| 10-10 04:48 | 40m | - / - | IU2SMA | -2 / - | 2 | Partial capture |
| 10-10 04:48 | 40m | -10 / - | F4MXT/P | +6 / +8 | 13 | ✓ Full exchange observed |
| 10-10 04:45 | 40m | - / - | F4JCU | -3 / - | 3 | Partial capture |
| 10-10 04:45 | 40m | - / -15 | LZ2VQ | -3 / - | 2 | Partial capture |
| 10-10 04:45 | 40m | - / - | F4BJN | -8 / - | 2 | Partial capture |
| 10-10 04:42 | 40m | - / - | F6FHZ | -12 / - | 2 | Partial capture |
| 10-10 04:40 | 40m | - / - | F4MXT/P | -3 / - | 4 | Partial capture |
| 10-10 04:39 | 40m | - / - | F4BJN | -8 / - | 3 | Partial capture |
| 10-10 04:39 | 40m | - / - | IU8RFW | -9 / - | 5 | Partial capture |
| 10-10 04:30 | 40m | - / -7 | PA4G | -19 / - | 7 | Partial capture |
| 10-02 04:40 | 160m | - / -15 | SP3BPU | +1 / - | 5 | ✓ Closing fragment |
| 10-02 04:37 | 160m | - / -16 | OK1PI | +11 / - | 4 | ✓ Closing fragment |
| 10-02 04:32 | 160m | - / -16 | ON8DM | -8 / - | 3 | ✓ Closing fragment |
| 10-02 04:28 | 160m | - / -23 | SP3PLD | +20 / - | 2 | ✓ Closing fragment |
| 09-15 05:45 | 80m | - / -11 | ON7HM | -16 / - | 5 | ✓ Closing fragment |
| 09-15 05:37 | 80m | - / -10 | DL3OCF | +11 / - | 2 | Partial capture |
| 09-15 03:41 | 80m | - / -4 | CT7AUT | -23 / - | 2 | ✓ Closing fragment |
| 09-15 03:38 | 80m | - / -12 | LY7T | +16 / - | 8 | Partial capture |
| 09-15 03:37 | 80m | - / - | F4FPR | -16 / - | 3 | Partial capture |
| 09-15 03:36 | 80m | - / - | HA5CPN | -6 / - | 2 | Partial capture |
| 09-15 03:35 | 80m | -18 / +1 | ON3ANY | -4 / -11 | 5 | ✓ Full exchange observed |
| 09-15 03:34 | 80m | -19 / - | II9IAGM | - / - | 2 | Partial capture |
| 09-15 03:32 | 80m | -16 / - | KY6AA | - / -18 | 3 | ✓ Closing fragment |
| 09-15 03:28 | 80m | -20 / -14 | GU4WRP | -19 / -25 | 5 | ✓ Full exchange observed |
| 09-15 03:27 | 80m | - / - | F4IIX | -12 / - | 5 | Partial capture |
| 09-15 03:26 | 80m | - / -10 | F1PBZ | +5 / - | 2 | ✓ Closing fragment |
| 09-15 03:21 | 80m | -24 / - | G7RHF | - / -19 | 2 | Partial capture |
| 09-10 05:22 | 80m | - / -4 | PI4DX | -14 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 043900 +14 1452 KJ4QVJ OK1PI -17 (x2) 044030 +2 1957 KJ4QVJ SP3BPU JO82 (x5) 044330 -21 463 KJ4QVJ G0BLB IO81 041245 +13 396 KJ4QVJ IW0FFK -17 (x2) 042815 +4 2563 KJ4QVJ DL1RWN -14 (x3) 043315 -7 2205 KJ4QVJ ON8DM -23 (x2)
UTC dB Audio Message 033015 -8 455 KJ4QVJ F4FPR IN88 033615 -5 1838 KJ4QVJ SP3SLA -09 (x2) 034200 +7 2373 KJ4QVJ F4HIK -25 (x3) 034600 +0 1039 KJ4QVJ F4CTJ +00 (x2) 035145 +6 1585 KJ4QVJ DL2VEL -20 (x7)
UTC dB Audio Message 030515 -3 2592 KJ4QVJ 4X1UF -12 (x7) 030845 -15 1164 KJ4QVJ US6EG KN78 031145 -8 2642 KJ4QVJ UA3GDJ KO92 031145 -11 1641 KJ4QVJ S52UF JN76 031215 -12 2642 KJ4QVJ UA3GDJ KO92 031215 -10 1641 KJ4QVJ S52UF JN76 031700 +1 883 KJ4QVJ G8KHF -09 (x2) 032145 -11 1524 KJ4QVJ EB3JT JN01
UTC dB Audio Message 010630 -9 1143 WS7M KJ4QVJ R+02 (x2) 010800 +2 765 F4HTA KJ4QVJ EL98 (x4) 011030 -9 2008 W0OVX KJ4QVJ -09 (x2) 011230 -5 802 7Z1DS KJ4QVJ EL98 (x4) 011530 +0 499 KF8DQU KJ4QVJ EL98 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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