RA3ZUJ — 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 RA3ZUJ, decoded by SO8OO in southeastern Poland. 229 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 17 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-20.
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 229 FT8 messages attributed to RA3ZUJ as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (62%), followed by 20 m (38%). Most decodes (90%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -3 dB.
Overview
Bands
Last attributed message: 2026-10-20 17:43 UTC
Observed FT8 message patterns
- Attributed sample
- 229 messages
- Active dates
- 17 UTC dates
- Estimated median S/N
- -3 dB
- Estimated 10th-90th percentile
- -14 to +7 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 43, strong (≥ -8 dB) 170.
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 RA3ZUJ 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 RA3ZUJ
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
- KO80 · 94 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,082 km (approx.)
- Last such locator decoded
- 2026-10-20 17:40 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 | RA3ZUJ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-20 17:40 | 40m | +2 / -2 | YT2VVV | -12 / -24 | 4 | Partial capture |
| 10-20 17:32 | 40m | +2 / - | SM6ONT | - / - | 2 | Partial capture |
| 10-20 17:27 | 40m | -3 / - | RL1I/P | - / -24 | 2 | Partial capture |
| 10-20 17:23 | 40m | +3 / - | RD0L | - / -24 | 3 | ✓ Closing fragment |
| 10-20 17:21 | 40m | +4 / - | BG0FQU | - / -17 | 4 | ✓ Closing fragment |
| 10-20 17:16 | 40m | +8 / - | R6BH | - / -12 | 2 | ✓ Closing fragment |
| 10-20 17:15 | 40m | +7 / - | R6ADH | - / -18 | 2 | ✓ Closing fragment |
| 10-20 17:14 | 40m | +4 / - | RU4SO | - / -6 | 2 | ✓ Closing fragment |
| 10-20 17:12 | 40m | +8 / - | R8CGT | - / -8 | 3 | ✓ Closing fragment |
| 10-17 16:01 | 40m | - / -4 | R2ZJJ | -8 / - | 3 | Partial capture |
| 10-17 16:01 | 40m | -10 / - | TA1NAX | -12 / -21 | 4 | ✓ Closing observed |
| 10-17 15:54 | 40m | -1 / - | RK0SK | - / -24 | 2 | Partial capture |
| 10-17 15:53 | 40m | -2 / - | RG4H | - / -24 | 2 | ✓ Closing fragment |
| 10-17 15:51 | 40m | 0 / +4 | UC6D | -5 / 0 | 5 | ✓ Full exchange observed |
| 10-17 15:51 | 40m | -3 / - | RA3VX | - / -16 | 2 | ✓ Closing fragment |
| 10-17 15:49 | 40m | +1 / - | RW4HB | - / -15 | 3 | ✓ Closing fragment |
| 10-17 15:47 | 40m | -4 / - | UA0ACZ | - / -2 | 2 | ✓ Closing fragment |
| 10-17 15:42 | 40m | -2 / - | RD0L | - / -16 | 5 | Partial capture |
| 09-10 18:27 | 40m | 0 / - | VJ6X | - / - | 2 | Partial capture |
| 09-10 17:40 | 40m | +6 / +2 | Z68PX | -18 / - | 5 | Partial capture |
| 09-10 17:39 | 40m | +8 / - | 5B4AMM | - / - | 2 | Partial capture |
| 09-10 17:37 | 40m | +12 / - | ON4NYO/QRP | - / -24 | 3 | Partial capture |
| 09-10 17:34 | 40m | +10 / - | RA2FCF | - / -18 | 3 | ✓ Closing fragment |
| 09-06 20:04 | 40m | +6 / - | VJ6X | - / - | 2 | Partial capture |
| 09-06 19:49 | 40m | +6 / - | JH5AVM | - / - | 2 | Partial capture |
| 09-06 19:47 | 40m | +6 / - | DS5USH | - / - | 2 | Partial capture |
| 09-06 19:44 | 40m | -2 / -1 | IZ3ZPO | +14 / -12 | 6 | ✓ Full exchange observed |
| 09-06 19:43 | 40m | +6 / - | JF8QNF | - / - | 2 | Partial capture |
| 09-06 18:38 | 40m | +9 / - | R1CF | - / -19 | 4 | Partial capture |
| 09-06 18:36 | 40m | +8 / - | RX3AM | - / -19 | 2 | Partial capture |
| 09-06 18:32 | 40m | +4 / - | UB9MEU | - / -21 | 4 | ✓ Closing fragment |
| 08-29 16:29 | 20m | - / -1 | DL3MIB | +4 / - | 4 | ✓ Closing fragment |
| 08-29 16:23 | 20m | - / -19 | CN8NS | -8 / - | 2 | Partial capture |
| 08-26 14:49 | 20m | +4 / - | JR2SHA | - / -24 | 5 | ✓ Closing fragment |
| 08-25 17:03 | 40m | +3 / - | UA0ACZ | -17 / -24 | 2 | ✓ Closing observed |
| 08-25 17:03 | 40m | +6 / - | R4UAS | -3 / -24 | 2 | Partial capture |
| 08-25 17:01 | 40m | +6 / - | RA9CUU | - / -24 | 3 | ✓ Closing fragment |
| 08-22 14:34 | 20m | +1 / - | XU7O | - / -15 | 4 | Partial capture |
| 08-06 17:06 | 40m | -11 / - | RA9CUU | - / -19 | 5 | ✓ Closing fragment |
| 08-06 17:02 | 20m | -16 / - | R8CGT | - / -19 | 2 | ✓ Closing fragment |
| 08-06 17:00 | 20m | -20 / - | BA6CC | - / -19 | 3 | Partial capture |
| 08-06 16:56 | 20m | -19 / - | BV2NF | - / -17 | 3 | ✓ Closing fragment |
| 08-06 16:53 | 20m | - / -16 | M1WLK | -5 / - | 3 | Partial capture |
| 08-06 13:27 | 20m | - / 0 | R6AC | -21 / - | 3 | ✓ Closing fragment |
| 08-06 12:37 | 20m | -24 / - | R4FDW | -24 / - | 2 | ✓ Closing observed |
| 08-05 18:24 | 20m | - / -12 | RA3TVW | -3 / - | 3 | ✓ Closing fragment |
| 08-05 18:13 | 20m | - / - | EA3HMM | +1 / - | 3 | Partial capture |
| 08-05 18:09 | 20m | - / -3 | TN8GD | -8 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 172245 +4 1308 BG0FQU RA3ZUJ 73 172315 +5 1308 RD0L RA3ZUJ KO80 (x3) 172545 +3 1308 PD0PF RA3ZUJ KO80 172745 -5 1308 RL1I/P RA3ZUJ KO80 (x2) 172945 +1 1307 BD1TX RA3ZUJ KO80 173245 +0 1308 SM6ONT RA3ZUJ KO80 (x2) 173715 -3 1307 OH3OJ RA3ZUJ KO80 174000 +5 1307 YT2VVV RA3ZUJ KO80 174145 -12 750 RA3ZUJ YT2VVV -02 174230 -5 1307 YT2VVV RA3ZUJ R-24 (x2)
UTC dB Audio Message 144800 -4 1342 JA5NSR RA3ZUJ KO80 144900 +3 1342 JR2SHA RA3ZUJ KO80 (x5) 160630 -11 355 RA3ZUJ RI1FJL -13 160800 -17 954 RA3ZUJ UN2NC -10 162300 -12 2053 RA3ZUJ CN8NS -19 (x2) 162800 -18 2166 RA3ZUJ M1WLK R-18 162900 +2 1679 RA3ZUJ DL3MIB JN57 (x4)
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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