ZL1VAH — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ZL1VAH, decoded by SO8OO in southeastern Poland. 448 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-23.
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 448 FT8 messages attributed to ZL1VAH as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%), followed by 40 m (0%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-09-23 17:41 UTC
Observed FT8 message patterns
- Attributed sample
- 448 messages
- Active dates
- 13 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -15 to -4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 29, moderate (-15 to -9 dB) 236, strong (≥ -8 dB) 183.
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 ZL1VAH 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 ZL1VAH
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
- RF72 · 147 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 17,477 km (approx.)
- Last such locator decoded
- 2026-08-29 06:39 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 | ZL1VAH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-06 17:25 | 40m | - / -18 | PA3BQC | +16 / - | 9 | ✓ Closing fragment |
| 10-06 17:22 | 40m | - / -17 | LZ1AAW | -1 / - | 4 | ✓ Closing fragment |
| 10-06 17:09 | 40m | - / - | PD2GJS | -2 / - | 6 | Partial capture |
| 10-06 16:40 | 40m | - / - | S51NA | -8 / - | 4 | Partial capture |
| 10-06 06:21 | 40m | - / - | E70N | -1 / - | 4 | Partial capture |
| 10-05 17:27 | 40m | - / - | IZ4EFV | -7 / - | 3 | ✓ Closing fragment |
| 10-05 17:10 | 40m | - / -19 | S50DK | +8 / - | 3 | ✓ Closing fragment |
| 10-05 17:06 | 40m | - / -21 | UR5WCA | +2 / - | 5 | ✓ Closing fragment |
| 10-05 16:39 | 40m | - / -22 | RW3XZ | -4 / - | 5 | ✓ Closing fragment |
| 10-05 16:31 | 40m | - / -22 | IN3IBW | +8 / - | 2 | Partial capture |
| 10-05 15:56 | 40m | - / -23 | SQ5EBL | +3 / - | 6 | ✓ Closing fragment |
| 10-05 15:25 | 40m | - / -12 | RA1WU | +2 / - | 4 | ✓ Closing fragment |
| 10-05 15:20 | 40m | - / -17 | DL4ZJ | +9 / - | 6 | ✓ Closing fragment |
| 10-05 07:25 | 40m | - / -16 | GW4GOQ | -17 / - | 4 | ✓ Closing fragment |
| 10-05 06:58 | 40m | - / -7 | DL4ME | +6 / - | 2 | ✓ Closing fragment |
| 10-05 06:52 | 40m | - / -25 | DJ2MS | -12 / - | 2 | ✓ Closing fragment |
| 10-05 06:37 | 40m | - / -15 | S55A | -5 / - | 2 | ✓ Closing fragment |
| 10-05 06:32 | 40m | - / - | PA3AGN | -12 / - | 3 | Partial capture |
| 10-05 06:30 | 40m | - / - | DF8MH | -12 / - | 2 | Partial capture |
| 10-05 06:30 | 40m | - / -15 | DL9ATW | -13 / - | 6 | ✓ Closing fragment |
| 10-03 17:49 | 40m | - / -16 | DJ5TT | +1 / - | 5 | ✓ Closing fragment |
| 10-03 17:38 | 40m | - / -15 | PD7YY | -2 / - | 8 | ✓ Closing fragment |
| 10-03 17:25 | 40m | - / -19 | LA6YEA | +2 / - | 4 | ✓ Closing fragment |
| 10-03 17:21 | 40m | - / - | LA7XK | -13 / - | 3 | Partial capture |
| 10-03 16:50 | 40m | - / -15 | R1CBW | -1 / - | 7 | Partial capture |
| 10-03 16:29 | 40m | - / -15 | SQ2RGB | +5 / - | 3 | ✓ Closing fragment |
| 10-03 16:15 | 40m | - / - | RU3GC | +6 / - | 3 | Partial capture |
| 10-03 16:13 | 40m | - / - | RA3RFY | -2 / - | 2 | ✓ Closing fragment |
| 10-03 07:42 | 40m | - / -24 | MW0USK | -16 / - | 6 | Partial capture |
| 10-03 07:30 | 40m | - / -21 | G4DBW | -12 / - | 2 | Partial capture |
| 10-03 07:24 | 40m | - / - | MW0USK | -10 / - | 2 | Partial capture |
| 10-02 18:03 | 40m | - / - | DL1GLO | +14 / - | 10 | Partial capture |
| 10-02 18:02 | 40m | - / -18 | A99AA | -5 / - | 3 | ✓ Closing fragment |
| 10-02 18:02 | 40m | - / - | EA2AFV | -4 / - | 9 | Partial capture |
| 10-02 17:37 | 40m | - / -23 | SM7IUN | -5 / - | 2 | Partial capture |
| 10-02 17:01 | 80m | - / - | OE3DSB | +20 / - | 11 | Partial capture |
| 10-02 16:10 | 40m | - / - | DL7KI | -2 / - | 2 | Partial capture |
| 10-02 16:08 | 40m | - / - | SP3BP | -2 / - | 3 | Partial capture |
| 10-02 16:03 | 40m | - / - | F6HTL | -8 / - | 2 | ✓ Closing fragment |
| 10-02 07:07 | 40m | - / -16 | F4MLW | -7 / - | 2 | ✓ Closing fragment |
| 10-02 06:50 | 40m | - / -12 | IK5CVV | -8 / - | 5 | ✓ Closing fragment |
| 10-02 06:35 | 40m | - / - | DM2SP | -10 / - | 4 | Partial capture |
| 10-02 06:33 | 40m | - / -18 | DK2SW | -11 / - | 29 | ✓ Closing fragment |
| 10-02 06:32 | 40m | - / - | F4NJT | -6 / - | 6 | Partial capture |
| 10-01 17:18 | 40m | - / - | R4DV | -11 / - | 2 | Partial capture |
| 10-01 16:35 | 40m | - / -21 | EA1BWU | -3 / - | 5 | ✓ Closing fragment |
| 10-01 15:53 | 40m | - / -25 | IT9SVJ | -6 / - | 3 | ✓ Closing fragment |
| 09-30 16:34 | 40m | - / -14 | DK9FE | +12 / - | 4 | ✓ Closing fragment |
| 09-30 15:58 | 40m | - / -25 | DL0HAM | 0 / - | 2 | Partial capture |
| 09-30 06:03 | 40m | - / - | IK4RVY | -6 / - | 8 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 171100 +1 1689 ZL1VAH PD2GJS JO21 (x2) 172200 -2 1384 ZL1VAH LZ1AAW R-17 (x4) 172530 +20 3044 ZL1VAH PA3BQC JO22 (x9)
UTC dB Audio Message 194200 -1 2364 ZL1VAH RA4Y LO35 (x3) 201700 +16 1445 ZL1VAH DL6EL JN57 170115 +19 385 ZL1VAH OE3DSB JN78 (x11)
UTC dB Audio Message 180330 +7 2852 ZL1VAH SP3BPU JO82 (x2) 180600 +5 2233 ZL1VAH 9A7V JN86 (x7)
UTC dB Audio Message 202745 +3 2400 ZL1VAH IK0PUL R-13 (x3) 204945 -14 2542 ZL1VAH OK2CNI -11 (x2) 025245 -11 2105 ZL1VAH EP2AES LM55 (x3) 032115 -22 1726 ZL1VAH R8CIS -15 (x2) 033715 +16 2620 ZL1VAH RZ4AZ LN28 (x3) 203445 -1 1849 ZL1VAH EA8AT R-12 (x2)
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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