IU5IFM — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving IU5IFM, decoded by SO8OO in southeastern Poland. 60 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-18.
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 60 FT8 messages attributed to IU5IFM as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 10 m (13%) and 20 m (8%). Several six-hour UTC windows tied for the largest share (95%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -2 dB.
Overview
Bands
Last attributed message: 2026-08-18 09:15 UTC
Observed FT8 message patterns
- Attributed sample
- 60 messages
- Active dates
- 10 UTC dates
- Estimated median S/N
- -2 dB
- Estimated 10th-90th percentile
- -17 to +8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 41.
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 IU5IFM 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 IU5IFM
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 · 30 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,089 km (approx.)
- Last such locator decoded
- 2026-08-18 09:15 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 | IU5IFM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-18 09:15 | 10m | -7 / - | VK6SP | - / - | 2 | Partial capture |
| 07-26 20:57 | 10m | -19 / - | WP4TZU | - / -18 | 3 | Partial capture |
| 07-26 20:56 | 10m | -14 / - | PY9AA | -17 / - | 2 | ✓ Closing observed |
| 07-08 21:07 | 40m | -4 / - | UN8DSW | - / - | 2 | ✓ Closing fragment |
| 07-07 20:59 | 40m | -2 / - | VJ6X | - / -23 | 2 | Partial capture |
| 07-06 21:30 | 80m | -6 / - | TN8GD | - / -14 | 3 | ✓ Closing fragment |
| 07-06 21:23 | 40m | -15 / - | YG2AUD | - / - | 2 | Partial capture |
| 07-06 21:21 | 40m | -18 / - | VK2NN | - / -12 | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 205430 -16 1154 PP2RR IU5IFM JN53 205630 -17 1142 IU5IFM PY9AA RR73 205645 -14 1141 PY9AA IU5IFM 73 205730 -18 1614 WP4TZU IU5IFM JN53 (x3) 104715 -2 2950 DO1FDK IU5IFM -01 091515 -5 645 VK6SP IU5IFM JN53 (x2)
UTC dB Audio Message 212100 -20 1891 VK2NN IU5IFM JN53 (x4) 212300 -13 1211 YG2AUD IU5IFM JN53 (x2) 205115 +1 488 VJ6X IU5IFM JN53 (x4) 210700 -5 2485 UN8DSW IU5IFM JN53 (x2) 200930 -9 2118 VK6BAD IU5IFM JN53 (x2)
UTC dB Audio Message 203945 -14 2205 JA5XAE IU5IFM -13 204345 -9 2583 VU3OSA IU5IFM JN53 203715 -8 2913 ZL1UZM IU5IFM JN53
UTC dB Audio Message 213015 -2 1240 TN8GD IU5IFM JN53 (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.
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