IZ1HJU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN44

Receiver-side FT8 activity involving IZ1HJU, decoded by SO8OO in southeastern Poland. 2,021 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 54 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-12.

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 2,021 FT8 messages attributed to IZ1HJU as the transmitting token by decoded message structure across 54 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (63%), followed by 40 m (20%) and 80 m (11%). Most decodes (59%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

2,021
Messages attributed
54
UTC dates decoded
261
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 213 60m · 13 40m · 414 20m · 1,283 10m · 98
First attributed message: 2026-06-08
Last attributed message: 2026-09-12 02:01 UTC

Observed FT8 message patterns

Attributed sample
2,021 messages
Active dates
54 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-21 to +6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 679, moderate (-15 to -9 dB) 452, strong (≥ -8 dB) 890.

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 IZ1HJU 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 IZ1HJU

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
JN44 · 1,628 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,137 km (approx.)
Last such locator decoded
2026-09-12 02:01 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 UTCBandIZ1HJU S/NCounterpartCounterpart S/NMsgsCapture
09-12 02:01 80m -21 / -4 F5BRF -16 / -11 4 ✓ Full exchange observed
09-12 01:59 80m -16 / - G8OO - / - 3 Partial capture
09-12 01:54 80m -21 / -16 DG7NFX -2 / - 6 ✓ Closing observed
09-12 01:53 80m - / - DO5PY -24 / - 3 Partial capture
09-12 01:47 80m - / - DO5PY -23 / - 3 Partial capture
09-12 01:44 80m -16 / - G8OO - / - 5 Partial capture
09-12 01:39 80m - / -5 DJ0BS -6 / - 2 ✓ Closing fragment
09-12 01:37 80m -22 / -10 DK7UY 0 / -10 5 ✓ Full exchange observed
09-12 01:37 80m - / - ON4MAP -20 / - 2 Partial capture
09-12 01:33 80m -15 / -13 YO3GNF -8 / -20 8 ✓ Full exchange observed
09-12 01:30 80m -15 / -13 TF3VS -12 / -14 5 ✓ Full exchange observed
09-12 01:28 80m -14 / - DL9KM -8 / -15 5 Partial capture
09-12 01:26 80m -15 / - Z62NS - / - 4 Partial capture
09-12 01:24 80m -16 / - EH3ST - / -5 3 ✓ Closing fragment
09-12 01:21 80m -22 / -3 DO4EB -4 / -13 5 ✓ Full exchange observed
09-12 01:18 80m -22 / 0 II0CDS -15 / - 3 ✓ Closing observed
09-12 01:17 80m - / -12 SP5EXA +19 / - 3 ✓ Closing fragment
09-12 01:15 80m -16 / -1 EA2DYB -5 / -10 5 ✓ Full exchange observed
09-12 01:14 80m -23 / -12 EA1IOK -9 / -10 4 ✓ Full exchange observed
09-10 00:22 80m -16 / - SO100PKP - / - 2 Partial capture
09-10 00:21 80m -17 / -20 CT7AUT -24 / -14 4 ✓ Full exchange observed
09-10 00:18 80m - / -10 LA1AAA -6 / - 3 Partial capture
09-10 00:07 80m -14 / -13 DL1UDO -4 / - 4 ✓ Closing observed
09-10 00:04 80m -16 / - SO100PKP - / - 2 Partial capture
09-10 00:00 80m -15 / - SM7/DL5BTE - / - 5 Partial capture
09-09 23:57 80m -21 / -11 SM7TZK -1 / -9 7 ✓ Full exchange observed
09-09 23:56 80m - / -9 OZ/KD0NDU -2 / - 4 Partial capture
09-09 23:55 80m -14 / - SM7/DL5BTE - / -7 5 ✓ Closing fragment
09-09 23:54 80m -15 / -9 G0ORC -12 / -16 3 ✓ Full exchange observed
09-09 23:51 80m -14 / -5 DH5BM -9 / -12 9 ✓ Full exchange observed
09-09 23:49 80m -14 / - R73SLET - / -10 2 ✓ Closing fragment
09-09 23:47 80m -16 / -6 SP6JIU +27 / -11 4 ✓ Full exchange observed
09-09 23:45 80m -24 / -12 UR7FM +6 / - 14 Partial capture
09-09 23:43 80m -22 / -15 PI4DX 0 / -5 5 ✓ Full exchange observed
09-09 23:40 80m - / -14 US2YW +1 / - 3 ✓ Closing fragment
09-09 23:38 80m -24 / -19 9A2TN +6 / - 4 ✓ Closing observed
09-09 23:35 80m -22 / - EA3FR - / -19 5 ✓ Closing fragment
09-09 23:33 80m -24 / -16 GM6URC -4 / -16 4 ✓ Full exchange observed
09-09 23:30 80m -24 / -22 UA4FKT +12 / -13 10 ✓ Full exchange observed
09-09 23:29 80m -24 / -18 DO5HOK +8 / -13 3 ✓ Full exchange observed
09-09 22:50 40m - / -6 K1SM -17 / - 4 Partial capture
09-09 21:58 40m -10 / - GW4HCA - / - 3 Partial capture
09-09 21:55 40m -16 / - RC9WC - / - 2 Partial capture
09-09 21:51 40m -10 / - G3PMY - / -13 3 Partial capture
09-09 21:49 40m -9 / +4 G5STU -10 / - 4 ✓ Closing observed
09-09 21:45 40m -11 / - M7YFL - / - 3 Partial capture
09-09 21:45 40m - / - TA2EE -18 / - 5 Partial capture
09-09 21:43 40m -7 / +3 M9WRL -16 / -17 5 ✓ Full exchange observed
09-09 21:27 40m - / +1 SP2GG 0 / - 2 ✓ Closing fragment
09-09 21:25 40m - / -10 M8MFU -9 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
015615 -20 2015  CQ IZ1HJU JN44
015630  +0 1050  IZ1HJU DG7NFX JN59 (x2)
015715 -21 2015  DG7NFX IZ1HJU RR73
015730  -3 1050  IZ1HJU DG7NFX 73
015745 -22 2014  CQ IZ1HJU JN44                        a1 (x3)
015945 -15 2014  G8OO IZ1HJU JN44 (x3)
020115 -19 2015  F5BRF IZ1HJU JN44
020130 -17 1436  IZ1HJU F5BRF -04
020145 -23 2015  F5BRF IZ1HJU R-11
020200 -15 1436  IZ1HJU F5BRF RR73
40m 
UTC    dB Audio  Message
220045  -7 2206  CQ IZ1HJU JN44 (x9)
221345 -19 2413  G5GMN IZ1HJU JN44
223500  +2 1802  IZ1HJU EH1PDA -22
225000 -13 2247  IZ1HJU K1SM -06 (x4)
20m 
UTC    dB Audio  Message
204400  -7 2279  CQ IZ1HJU JN44
165845 -18 2381  RM6OS IZ1HJU 73
170230  +6 2384  IZ1HJU EA7Z IM67 (x3)
181300 -13 1107  IZ1HJU EA7LDW -17
182615 -21 2339  ON9DC IZ1HJU JN44 (x2)
194930 -14 1038  IZ1HJU II7MGXX -12 (x3)
201900  -7 1580  IZ1HJU EB5JJX -11
203500  +5  522  IZ1HJU EA4PS -15 (x3)
10m 
UTC    dB Audio  Message
220600 -13 2098  CQ IZ1HJU JN44 (x8)
120430 -15 1404  IZ1HJU M0BEW -10
125100 -11 1408  IZ1HJU F4LNM JN09 (x5)
130230 -18 1028  IZ1HJU M0JFG RR73
60m 
UTC    dB Audio  Message
023600 -16 2338  IZ1HJU F5OYA/P JN13 (x15)

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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