IU1TKL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN35

Receiver-side FT8 activity involving IU1TKL, decoded by SO8OO in southeastern Poland. 120 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-07-21.

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 120 FT8 messages attributed to IU1TKL as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (76%), followed by 40 m (19%) and 20 m (5%). The busiest six-hour window was 15:00-21:00 UTC, containing 41% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

120
Messages attributed
9
UTC dates decoded
22
Active 15-min windows
-9 dB
Estimated median S/N

Bands

40m · 23 20m · 6 10m · 91
First attributed message: 2026-06-12
Last attributed message: 2026-07-21 16:34 UTC

Observed FT8 message patterns

Attributed sample
120 messages
Active dates
9 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-21 to -2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 39, strong (≥ -8 dB) 53.

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 IU1TKL 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 IU1TKL

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
JN35 · 71 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,209 km (approx.)
Last such locator decoded
2026-07-21 16:34 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 UTCBandIU1TKL S/NCounterpartCounterpart S/NMsgsCapture
07-12 06:43 40m - / - DL9KM -19 / - 3 ✓ Closing fragment
07-11 22:27 40m -5 / - F5STP -5 / +9 4 Partial capture
07-11 21:56 40m - / -1 IQ4JO +2 / - 4 ✓ Closing fragment
07-11 21:54 40m - / -10 RN3AOE -4 / - 2 Partial capture
07-11 21:47 40m - / - IQ4JO +2 / - 2 Partial capture
07-11 21:36 40m -2 / - DB5HA - / +5 2 ✓ Closing fragment
07-11 21:36 40m -1 / - DJ0MAB +5 / +3 2 Partial capture
07-11 21:34 40m 0 / - DL1UDO -16 / -5 2 Partial capture
07-11 21:32 40m +2 / -8 DK4RH 0 / +3 3 Partial capture
07-11 21:28 40m - / - PA2KV -2 / - 3 ✓ Closing fragment
07-11 21:23 40m - / -13 9A4ZM -2 / - 3 ✓ Closing fragment
07-11 21:20 40m -14 / - S56KO -8 / - 3 ✓ Closing observed
07-11 21:19 40m - / - DG1RMY -16 / - 2 Partial capture
07-11 21:17 40m -20 / -7 DK8HC -8 / -3 4 ✓ Full exchange observed
07-11 21:13 40m -22 / +1 GU0VPA -20 / -2 4 Partial capture
07-11 21:10 40m - / -8 PE1NPS -10 / - 5 ✓ Closing fragment
07-11 21:04 40m -21 / +3 F1PBZ -15 / -11 4 ✓ Full exchange observed
06-28 12:14 20m - / - IZ4AIF -6 / - 2 Partial capture
06-28 12:11 20m - / - IU2NBZ -11 / - 8 Partial capture
06-28 11:11 20m - / -6 IQ4JO -2 / - 2 ✓ Closing fragment
06-27 20:37 40m - / +5 IR0RCAG -14 / - 2 Partial capture
06-27 20:25 40m - / - IZ4AIF -8 / - 6 Partial capture
06-27 20:20 40m - / -2 SV2HTW -4 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
163415 -18 1208  CQ IU1TKL JN35 (x2)
20m 
UTC    dB Audio  Message
111130  -1 2732  IU1TKL IQ4JO 73
121100 -13 1247  IU1TKL IU2NBZ JN55 (x7)
121430  -8 2312  IU1TKL IZ4AIF JN54
121430 -13 1247  IU1TKL IU2NBZ JN55
121600  -3 2312  IU1TKL IZ4AIF JN54
161815 -13  675  TJ1GD/P IU1TKL JN35
163530 -14  375  XV9T IU1TKL JN35
071315 -22 1491  CQ IU1TKL JN35
071330  -7 3009  IU1TKL F4BYA JN19
40m 
UTC    dB Audio  Message
215530  -5 2919  CQ IU1TKL JN35
215615  -1 2720  IU1TKL IQ4JO JN63 (x4)
220800  -3 2919  EW8DG IU1TKL -22
222730  -5 2779  IU1TKL F5STP IN88
222745  -5 2780  F5STP IU1TKL +09 (x3)
064315 -19 1209  IU1TKL DL9KM JN68 (x3)
064615 -24 1996  IU1TKL PC2J 73
070445 -24 1988  IU1TKL OK1FMH 73

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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