IU5VLH — 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 IU5VLH, decoded by SO8OO in southeastern Poland. 24 FT8 messages attributed to this token as transmitter, on 80m, 20m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-21 and 2026-10-27.
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 24 FT8 messages attributed to IU5VLH as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (58%), followed by 20 m (29%) and 10 m (13%). Several six-hour UTC windows tied for the largest share (92%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (63%); the estimated median was -14 dB.
Overview
Bands
Last attributed message: 2026-10-27 18:22 UTC
Observed FT8 message patterns
- Attributed sample
- 24 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- -14 dB
- Estimated 10th-90th percentile
- -19 to -9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 2.
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 IU5VLH in decoded directed-looking exchanges:
Most frequent locator attributed to IU5VLH
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
- JN53 · 6 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,089 km (approx.)
- Last such locator decoded
- 2026-10-27 18:22 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 | IU5VLH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-27 18:16 | 80m | -13 / - | IQ4JO | - / -8 | 2 | ✓ Closing fragment |
| 10-27 18:12 | 80m | -16 / -19 | DA1ST | 0 / -3 | 8 | Partial capture |
| 10-27 18:10 | 80m | -15 / -10 | DD8BA | -10 / - | 3 | ✓ Closing observed |
| 10-27 18:07 | 80m | - / -7 | SV1EAG | -23 / - | 2 | ✓ Closing fragment |
| 08-15 15:49 | 20m | -12 / +3 | G0OSK | -12 / -18 | 6 | ✓ Full exchange observed |
| 08-15 15:48 | 20m | -18 / - | DK6XY | - / -16 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 181115 -15 1853 DD8BA IU5VLH 73 181145 -14 1853 CQ IU5VLH JN53 (x2) 181230 +1 1852 IU5VLH DA1ST JO41 181245 -19 1852 DA1ST IU5VLH -03 181300 +0 1852 IU5VLH DA1ST JO41 181315 -19 1853 DA1ST IU5VLH +00 (x2) 181400 +1 1852 IU5VLH DA1ST R-19 (x3) 181645 -14 2115 IQ4JO IU5VLH -08 (x2) 181900 -16 1050 IU5VLH EA1IOK IN62 182200 -5 1907 CQ IU5VLH JN53
UTC dB Audio Message 154315 -22 1994 <...> IU5VLH -16 154845 -15 2146 DK6XY IU5VLH -16 (x2) 154930 -14 2145 IU5VLH G0OSK IO91 154945 -12 2145 G0OSK IU5VLH -18 155000 -12 2145 IU5VLH G0OSK R+03 155015 -13 2146 G0OSK IU5VLH RR73 155030 -9 2145 IU5VLH G0OSK R+03 (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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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