W5J — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving W5J, decoded by SO8OO in southeastern Poland. 10 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-29 and 2026-09-01.
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 10 FT8 messages attributed to W5J as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (80%), followed by 20 m (20%). In this small sample, the estimated median decoder S/N was -24 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-01 00:01 UTC
Observed FT8 message patterns
- Attributed sample
- 10 messages
- Active dates
- 3 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) 10, 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 W5J 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 W5J
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
- EM52 · 2 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,604 km (approx.)
- Last such locator decoded
- 2026-08-31 03:46 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 | W5J S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-02 02:02 | 40m | - / -15 | DK7ZT | -21 / - | 2 | Partial capture |
| 09-02 02:02 | 40m | - / - | F4BYA | +14 / - | 2 | Partial capture |
| 09-02 02:01 | 40m | - / - | G5TV | -1 / - | 3 | Partial capture |
| 09-02 01:55 | 40m | - / - | DL3MIB | -2 / - | 6 | Partial capture |
| 09-02 01:55 | 40m | - / - | F4BYA | +10 / - | 3 | Partial capture |
| 09-02 01:55 | 40m | - / - | DL1OBF | -1 / - | 2 | Partial capture |
| 09-02 01:49 | 40m | - / - | F5PBG | +2 / - | 3 | Partial capture |
| 09-02 01:44 | 40m | - / - | F4BYA | +16 / - | 2 | Partial capture |
| 09-02 01:43 | 40m | - / - | F5PBG | +3 / - | 2 | Partial capture |
| 09-02 01:37 | 40m | - / - | F4BYA | +20 / - | 2 | Partial capture |
| 09-02 01:36 | 40m | - / - | G5TV | -6 / - | 3 | Partial capture |
| 09-01 00:01 | 40m | -24 / - | KA3EHL | - / -1 | 2 | ✓ Closing fragment |
| 09-01 00:00 | 40m | - / - | EA1AOC | -22 / - | 3 | Partial capture |
| 09-01 00:00 | 40m | - / - | DF8RU | -9 / - | 2 | Partial capture |
| 08-31 23:59 | 40m | - / - | DL7ACA | -11 / - | 2 | Partial capture |
| 08-31 23:56 | 40m | - / - | F5RRS | +1 / - | 4 | Partial capture |
| 08-31 23:55 | 40m | - / -12 | IZ8EYN | -6 / - | 2 | Partial capture |
| 08-31 23:51 | 40m | - / - | DL8JDX | -14 / - | 4 | Partial capture |
| 08-31 23:50 | 40m | -24 / -6 | IN3KXV | -5 / - | 4 | ✓ Closing observed |
| 08-31 23:50 | 40m | -24 / -17 | S52D | -9 / - | 4 | ✓ Closing observed |
| 08-31 23:40 | 40m | - / - | EA1CQ | -20 / - | 2 | Partial capture |
| 08-31 23:33 | 40m | - / - | G5TV | -10 / - | 3 | Partial capture |
| 08-31 23:33 | 40m | - / -14 | EA1CQ | -15 / - | 2 | Partial capture |
| 08-31 23:19 | 40m | - / - | G5TV | -14 / - | 3 | Partial capture |
| 08-31 23:17 | 40m | - / -18 | KP4DVM | -20 / - | 2 | Partial capture |
| 08-31 23:10 | 40m | - / -2 | HI8J | -2 / - | 2 | ✓ Closing fragment |
| 08-31 23:00 | 40m | - / - | G5TV | -8 / - | 23 | Partial capture |
| 08-31 22:58 | 40m | - / - | F5PBG | -2 / - | 4 | Partial capture |
| 08-31 22:56 | 40m | - / - | IW8EDA | -2 / - | 4 | Partial capture |
| 08-31 20:30 | 20m | - / -9 | NK4L | -14 / - | 3 | Partial capture |
| 08-31 03:50 | 40m | - / -9 | EB3JT | -6 / - | 3 | ✓ Closing fragment |
| 08-31 03:50 | 40m | - / - | SV1ENG | -2 / - | 5 | Partial capture |
| 08-31 03:49 | 40m | - / -24 | G5TV | -13 / - | 13 | Partial capture |
| 08-31 03:36 | 40m | - / - | 4L7T | -9 / - | 3 | Partial capture |
| 08-31 03:33 | 40m | - / - | SV1ENG | -6 / - | 4 | Partial capture |
| 08-31 03:32 | 40m | - / -3 | DJ0MAB | -16 / - | 4 | Partial capture |
| 08-31 03:32 | 40m | - / - | 4L7T | -4 / - | 4 | Partial capture |
| 08-31 03:24 | 40m | - / -15 | DL8TV | -2 / - | 4 | ✓ Closing fragment |
| 08-31 03:20 | 40m | - / -5 | KR4EOD | -16 / - | 2 | ✓ Closing fragment |
| 08-31 01:16 | 40m | - / - | EA5HM | -17 / - | 4 | Partial capture |
| 08-31 00:56 | 60m | - / +1 | F5RRS | -2 / - | 3 | ✓ Closing fragment |
| 08-31 00:52 | 60m | - / - | F4FPR | -18 / - | 3 | Partial capture |
| 08-31 00:45 | 60m | - / - | F4FPR | -20 / - | 7 | Partial capture |
| 08-30 03:26 | 40m | - / - | EA1HVS | -18 / - | 2 | ✓ Closing fragment |
| 08-30 03:11 | 40m | - / -8 | EA3EDU | -4 / - | 6 | ✓ Closing fragment |
| 08-30 03:03 | 40m | - / - | IW9FRA | -10 / - | 7 | Partial capture |
| 08-29 21:18 | 20m | - / - | CT1AGS | -3 / - | 6 | Partial capture |
| 08-29 21:12 | 20m | - / - | EA8ACW | -5 / - | 3 | Partial capture |
| 08-29 20:13 | 20m | - / - | EA7UW | -6 / - | 2 | Partial capture |
| 08-29 05:51 | 20m | - / -8 | OH7MA | -22 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 015630 +10 2881 W5J F4BYA JN19 015630 -5 1070 W5J DL3MIB JN57 (x4) 020100 -3 1543 W5J G5TV IO93 (x2) 020200 +13 2881 W5J F4BYA JN19 020200 -6 2280 W5J DL1OBF R-16 020230 +16 2881 W5J F4BYA JN19 020230 -20 1906 W5J DK7ZT -15 020300 -3 1543 W5J G5TV IO93 020300 -22 1906 W5J DK7ZT -15 021500 -3 1543 W5J G5TV IO93 222415 -17 1527 W5J NP4PR -07
UTC dB Audio Message 201300 -4 2313 W5J EA7UW IM76 (x3) 211230 -1 2358 W5J EA8ACW IL28 (x3) 211800 +0 910 W5J CT1AGS IM59 (x6) 203000 -15 1155 W5J NK4L R-09 (x3)
UTC dB Audio Message 004100 -20 1534 W5J F4FPR IN88 (x11) 005600 -2 1925 W5J F5RRS JN36 (x3)
UTC dB Audio Message 004915 -10 2596 W5J EA8CVR -15
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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