IZ4DYQ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IZ4DYQ, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-03 and 2026-09-14.
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 18 FT8 messages attributed to IZ4DYQ as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (78%), followed by 20 m (22%). In this small sample, the estimated median decoder S/N was 0 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-09-14 19:00 UTC
Observed FT8 message patterns
- Attributed sample
- 18 messages
- Active dates
- 5 UTC dates
- Estimated median S/N
- 0 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 15.
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 IZ4DYQ 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 IZ4DYQ
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
- JN54 · 11 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,013 km (approx.)
- Last such locator decoded
- 2026-09-14 19:00 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 | IZ4DYQ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-14 19:00 | 40m | +6 / - | II8IHBC | - / - | 2 | Partial capture |
| 09-14 17:40 | 40m | +4 / - | SO100PKP | - / -6 | 2 | Partial capture |
| 09-14 17:38 | 40m | +5 / +1 | HB9ELE | +12 / -7 | 6 | ✓ Full exchange observed |
| 09-02 19:48 | 40m | -2 / - | RI1FJL | - / - | 3 | Partial capture |
| 08-31 19:47 | 40m | -4 / - | OK1WCF | - / -6 | 2 | ✓ Closing fragment |
| 08-31 19:45 | 40m | - / - | HB10GBT | +1 / - | 2 | Partial capture |
| 08-31 19:40 | 40m | +2 / +1 | IA5/OE9DGV | -13 / -9 | 3 | Partial capture |
| 08-05 10:10 | 40m | - / - | UT4PA | -13 / - | 2 | Partial capture |
| 08-04 13:58 | 20m | -10 / - | 5P1KZX | - / -10 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 194845 +0 445 RI1FJL IZ4DYQ JN54 (x3) 173600 -3 814 IZ4DYQ II0IHMG +13 173630 -1 814 IZ4DYQ RR73; IU1TXC <...> +02 173845 +4 746 HB9ELE IZ4DYQ JN54 173900 +13 746 IZ4DYQ HB9ELE +01 173915 +6 749 HB9ELE IZ4DYQ R-07 173930 +10 746 IZ4DYQ HB9ELE +01 (x2) 174015 +5 747 HB9ELE IZ4DYQ 73 174045 +4 1217 SO100PKP IZ4DYQ JN54 (x2) 190000 +4 637 II8IHBC IZ4DYQ JN54 (x2)
UTC dB Audio Message 143730 -18 1051 IZ4DYQ YH5NA -17 150845 -19 1075 7X2KF IZ4DYQ JN54 135800 -9 364 5P1KZX IZ4DYQ JN54 (x2) 153245 -7 576 9M2DGA IZ4DYQ JN54
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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