ZW5B — 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 ZW5B, decoded by SO8OO in southeastern Poland. 214 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 33 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-11-02.
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 214 FT8 messages attributed to ZW5B as the transmitting token by decoded message structure across 33 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (37%), followed by 40 m (30%) and 80 m (27%). Most decodes (81%) fell within the six-hour window 20:00-02:00 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: 2026-11-02 01:12 UTC
Observed FT8 message patterns
- Attributed sample
- 214 messages
- Active dates
- 33 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -20 to -2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 48, moderate (-15 to -9 dB) 72, strong (≥ -8 dB) 94.
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 ZW5B 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 ZW5B
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
- GG54 · 87 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 10,892 km (approx.)
- Last such locator decoded
- 2026-11-02 00:51 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 | ZW5B S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-02 01:13 | 80m | - / - | RW9UR | -20 / - | 2 | Partial capture |
| 11-02 01:10 | 80m | - / -20 | 6W/IK2HKT | -6 / - | 2 | Partial capture |
| 11-02 00:49 | 40m | - / -9 | M9DNC | -5 / - | 11 | Partial capture |
| 11-02 00:49 | 40m | -19 / - | HJ0JAP | - / - | 3 | Partial capture |
| 10-29 21:33 | 40m | -12 / -4 | EA8UP | -13 / -11 | 3 | ✓ Full exchange observed |
| 10-29 21:18 | 40m | - / -9 | EX7CQ | -8 / - | 2 | Partial capture |
| 10-29 21:14 | 40m | -12 / - | AP5ARS | - / +2 | 2 | Partial capture |
| 10-16 03:35 | 40m | - / -13 | F5NBU | -8 / - | 3 | ✓ Closing fragment |
| 10-11 00:41 | 80m | - / -18 | UN7CL | -19 / - | 3 | Partial capture |
| 10-11 00:39 | 80m | - / - | RY7F | +3 / - | 6 | Partial capture |
| 10-11 00:39 | 80m | - / -3 | UN2G | -10 / - | 4 | ✓ Closing fragment |
| 10-11 00:36 | 80m | - / -8 | RD9U | -3 / - | 6 | ✓ Closing fragment |
| 10-11 00:36 | 80m | - / -13 | UN7LZ | -4 / - | 3 | ✓ Closing fragment |
| 10-06 04:36 | 80m | - / -10 | KP2B | -20 / - | 2 | ✓ Closing fragment |
| 10-02 04:56 | 60m | -17 / - | 9T0MD | - / -9 | 4 | ✓ Closing fragment |
| 09-30 04:58 | 80m | - / - | DK1MCS | 0 / - | 3 | Partial capture |
| 09-30 02:29 | 60m | -18 / -9 | ER3ZW | -5 / - | 3 | ✓ Closing observed |
| 09-30 00:23 | 80m | - / - | IZ0BVU | +11 / - | 3 | Partial capture |
| 09-26 03:47 | 160m | - / - | OH2MDN | -16 / - | 2 | Partial capture |
| 09-26 03:45 | 160m | - / -8 | LY7M | +15 / - | 2 | ✓ Closing fragment |
| 09-25 04:39 | 160m | - / - | LA8YJA | -18 / - | 2 | Partial capture |
| 09-24 21:06 | 80m | - / - | EA4DL | -22 / - | 2 | Partial capture |
| 09-24 20:58 | 80m | - / -15 | CN8WK | -4 / - | 2 | ✓ Closing fragment |
| 09-08 01:48 | 40m | - / -8 | R9SY | -8 / - | 3 | Partial capture |
| 09-08 01:46 | 40m | -17 / - | J38DX | - / -6 | 3 | Partial capture |
| 09-08 01:25 | 80m | - / -13 | R9SY | -13 / - | 2 | Partial capture |
| 09-05 20:51 | 80m | - / - | IZ0SQZ | -9 / - | 4 | Partial capture |
| 09-05 20:46 | 80m | - / - | IZ0SQZ | -8 / - | 3 | Partial capture |
| 09-05 00:52 | 80m | -14 / - | AP2HA | - / - | 3 | ✓ Closing fragment |
| 08-30 10:06 | 20m | - / -16 | RV3GZ | +3 / - | 3 | Partial capture |
| 08-30 05:38 | 40m | - / - | SV1MOZ | -14 / - | 2 | Partial capture |
| 08-30 05:33 | 40m | -15 / -4 | DH6DAO | +1 / - | 5 | ✓ Closing observed |
| 08-30 05:16 | 80m | - / - | DO2NM | -12 / - | 3 | Partial capture |
| 08-30 05:08 | 80m | - / - | DO7HZ | -22 / - | 2 | Partial capture |
| 08-30 05:07 | 80m | - / -2 | ON1JP | -24 / - | 2 | Partial capture |
| 08-30 05:05 | 80m | - / - | F4BYA | +3 / - | 3 | Partial capture |
| 08-30 05:05 | 80m | - / - | F5NUI | -10 / - | 3 | Partial capture |
| 08-30 05:05 | 80m | - / -18 | IK4UXA | -7 / - | 2 | ✓ Closing fragment |
| 08-30 05:03 | 80m | - / -13 | ON6PL | -6 / - | 4 | ✓ Closing fragment |
| 08-30 03:29 | 160m | - / - | F4UJU | -8 / - | 2 | Partial capture |
| 08-30 02:19 | 160m | - / - | OH2BGD | +5 / - | 3 | Partial capture |
| 08-30 02:12 | 160m | - / - | R4CY | -1 / - | 2 | Partial capture |
| 08-30 02:10 | 160m | - / - | SP9JZU | +10 / - | 2 | Partial capture |
| 08-30 01:41 | 160m | - / - | LA0FA | +3 / - | 5 | Partial capture |
| 08-30 01:39 | 160m | - / - | OH2BGD | +6 / - | 2 | Partial capture |
| 08-30 01:34 | 160m | - / -20 | LA4GHA | -12 / - | 7 | Partial capture |
| 08-30 01:33 | 160m | - / -19 | SP5ES | +12 / - | 2 | Partial capture |
| 08-30 01:32 | 160m | - / - | OH2BGD | +4 / - | 7 | Partial capture |
| 08-30 01:32 | 160m | - / - | SP2HNF | +14 / - | 7 | Partial capture |
| 08-30 01:32 | 160m | - / -9 | DL1RWN | +14 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 004000 +7 2616 ZW5B RY7F LN04 004030 -14 1834 ZW5B UN2G 73 004030 -2 2617 ZW5B RY7F LN04 004030 -12 2297 ZW5B R4FDD -15 004100 -19 1135 ZW5B UN7CL -18 004100 +7 2616 ZW5B RY7F LN04 (x2) 004200 -20 1136 ZW5B UN7CL -18 (x2) 011000 -7 614 ZW5B 6W/IK2HKT -20 (x2) 011215 -20 2293 F5OYA/P ZW5B R-19 011300 -20 1705 ZW5B RW9UR NO33 (x2) 011430 +4 572 ZW5B IW0HIQ JN62
UTC dB Audio Message 232115 -17 2295 5R8IC ZW5B GG54 004915 -24 2462 HJ0JAP ZW5B GG54 004930 -5 254 ZW5B M9DNC -09 (x2) 005015 -19 2463 HJ0JAP ZW5B GG54 005030 -4 254 ZW5B M9DNC -09 (x2) 005115 -13 2463 HJ0JAP ZW5B GG54 005130 -3 254 ZW5B M9DNC -09 (x7)
UTC dB Audio Message 021245 -3 2223 ZW5B R4CY LO31 (x2) 021930 +7 896 ZW5B OH2BGD KP20 (x3) 032930 -6 2366 ZW5B F4UJU JN06 033000 -17 1604 ZW5B GM5G IO87 033000 -10 2367 ZW5B F4UJU JN06 043930 -18 2351 ZW5B LA8YJA JP53 (x2) 034500 +18 1910 ZW5B LY7M -08 (x2) 034700 -18 2043 ZW5B OH2MDN KP21 (x2) 013000 -3 603 ZW5B RR73; K2HAT <...> -14
UTC dB Audio Message 022945 -18 2204 ER3ZW ZW5B GG54 023030 -6 2027 ZW5B ER3ZW -09 (x2) 045645 -15 2320 9T0MD ZW5B GG54 (x4)
UTC dB Audio Message 185815 -13 2510 5H6PJ ZW5B GG54 200515 -13 2372 9J2FI ZW5B GG54 (x2) 200615 -13 2372 CQ ZW5B GG54 200645 -10 2372 BH5HIE ZW5B +04 200745 -8 2372 BA4UFM ZW5B -12 200845 -5 2372 ZW5B SV5BYP KM46 201015 -10 2372 9J2FI ZW5B GG54 (x3) 201300 -16 875 ZW5B Z32BB KN02 (x2) 100645 +7 880 ZW5B RV3GZ KO92 (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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