F4IYO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN05

Receiver-side FT8 activity involving F4IYO, decoded by SO8OO in southeastern Poland. 101 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-07-21 and 2026-09-02.

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 101 FT8 messages attributed to F4IYO as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (34%), followed by 60 m (33%) and 80 m (25%). Most decodes (69%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

101
Messages attributed
11
UTC dates decoded
23
Active 15-min windows
-8 dB
Estimated median S/N

Bands

80m · 25 60m · 33 40m · 34 20m · 9
First attributed message: 2026-07-21
Last attributed message: 2026-09-02 17:56 UTC

Observed FT8 message patterns

Attributed sample
101 messages
Active dates
11 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-16 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 35, strong (≥ -8 dB) 52.

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 F4IYO 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 F4IYO

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
JN05 · 90 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,626 km (approx.)
Last such locator decoded
2026-09-02 17:56 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 UTCBandF4IYO S/NCounterpartCounterpart S/NMsgsCapture
09-02 17:50 40m +4 / - RI1FJL - / - 2 Partial capture
09-02 17:42 40m +5 / - RI1FJL - / -21 5 Partial capture
09-01 20:59 40m +2 / - RI1FJL - / - 17 Partial capture
08-31 18:27 40m -4 / - RI1FJL - / - 3 Partial capture
08-31 05:24 60m - / - ON7GB -4 / - 3 Partial capture
08-31 05:17 60m -10 / - ZL2CC - / -11 3 ✓ Closing fragment
08-17 03:00 60m -12 / - KI0D - / - 9 Partial capture
08-17 03:00 60m - / - DL5DQZ -16 / - 4 Partial capture
08-17 02:58 60m -10 / - AE2NY - / - 2 Partial capture
08-12 20:07 20m - / +8 DH1JAD -24 / - 3 ✓ Closing fragment
08-12 15:09 20m -14 / - <...> - / - 2 Partial capture
08-09 20:28 40m -14 / - HB9HBY - / - 3 Partial capture
08-08 20:28 80m -10 / - TM84TFR +5 / - 7 Partial capture
08-08 20:24 80m -8 / - TM84TFR - / - 2 Partial capture
08-08 20:20 80m -1 / - TM84TFR - / - 3 Partial capture
08-08 20:17 80m 0 / -9 OH3OJ/1 +2 / - 3 Partial capture
08-08 20:13 80m +4 / - <...> - / +2 6 Partial capture
08-08 19:22 80m -8 / - <...> +4 / - 3 Partial capture
08-08 19:17 80m - / - TM69TFR -9 / - 2 Partial capture
08-08 18:51 40m -18 / - RA4ADF/P - / - 2 Partial capture
08-08 05:41 60m - / - SP9UPH +5 / - 3 Partial capture
08-06 19:38 60m - / - ON7GB -2 / - 4 Partial capture
08-06 19:37 60m -16 / - <...> - / - 7 Partial capture
08-06 17:05 40m - / - DF5DY -10 / - 3 Partial capture
08-03 05:32 60m - / - DK5WL -14 / - 2 Partial capture
08-03 05:30 60m -6 / +2 TM42TFR -6 / -2 3 Partial capture
08-03 05:06 60m -10 / - <...> - / -7 10 Partial capture
08-03 04:56 80m -16 / - AA6AA - / - 2 Partial capture
07-21 17:36 20m -8 / - VK2LAW - / +1 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m 
UTC    dB Audio  Message
210515  +3 1025  RI1FJL F4IYO JN05 (x15)
60m 
UTC    dB Audio  Message
030130 -16 1973  F4IYO DL5DQZ JO61
030145 -16 1612  KI0D F4IYO JN05
030200 -14 1973  F4IYO DL5DQZ JO61
030215 -10 1612  KI0D F4IYO JN05 (x6)
051730 -12  232  ZL2CC F4IYO JN05 (x3)
052445  -5 2231  F4IYO ON7GB JO21 (x3)
20m 
UTC    dB Audio  Message
173400  -3 1563  VK2LAW F4IYO JN05 (x5)
173845  +5  850  F4IYO HG3FMZ JN96
165930 -19 1645  HB8TWU F4IYO JN05
202600 -11 1455  <...> F4IYO JN05 (x3)
200700 -24 1550  F4IYO DH1JAD JO31 (x3)
80m 
UTC    dB Audio  Message
201915  +0 2609  OH3OJ/1 F4IYO JN05 (x2)
202015  -3 2609  <TM84TFR> F4IYO JN05 (x8)
203045  -5 1752  HG25CCS F4IYO JN05
203100  +3 2576  F4IYO TM84TFR +13 (x4)

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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