IU3UJX — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN55

Receiver-side FT8 activity involving IU3UJX, decoded by SO8OO in southeastern Poland. 283 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-10-05 and 2026-10-09.

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 283 FT8 messages attributed to IU3UJX 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 (54%), followed by 80 m (46%). Most decodes (91%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -6 dB.

Overview

283
Messages attributed
5
UTC dates decoded
27
Active 15-min windows
-6 dB
Estimated median S/N

Bands

80m · 130 40m · 153
First attributed message: 2026-10-05
Last attributed message: 2026-10-09 22:42 UTC

Observed FT8 message patterns

Attributed sample
283 messages
Active dates
5 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-12 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 94, strong (≥ -8 dB) 187.

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 IU3UJX 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 IU3UJX

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
JN55 · 100 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
945 km (approx.)
Last such locator decoded
2026-10-09 22:42 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 UTCBandIU3UJX S/NCounterpartCounterpart S/NMsgsCapture
10-10 08:44 40m - / +3 IN3EZU -18 / - 2 Partial capture
10-10 08:41 40m - / +5 IZ5CMG -15 / - 3 ✓ Closing fragment
10-10 08:35 40m - / -8 DK2FM -2 / - 4 ✓ Closing fragment
10-10 08:34 40m - / -6 DL7FE -16 / - 3 Partial capture
10-10 08:31 40m - / -5 9A1AR -2 / - 6 ✓ Closing fragment
10-10 08:27 40m - / - IZ4AIF -7 / - 2 Partial capture
10-10 08:26 40m - / -6 S53AK -5 / - 5 Partial capture
10-10 08:23 40m - / - DL7LTM -13 / - 2 Partial capture
10-10 08:19 40m - / -3 DK2FM -1 / - 3 Partial capture
10-09 23:00 40m - / -10 F5OYA/P -10 / - 2 Partial capture
10-09 22:42 40m - / - DF8RU -8 / - 2 Partial capture
10-09 22:33 40m -9 / -10 F5OYA/P -10 / -20 38 ✓ Full exchange observed
10-09 22:26 40m -10 / - IU8RFW - / -16 2 Partial capture
10-09 22:25 40m - / - IW0RLC -4 / - 5 Partial capture
10-09 22:08 40m -8 / -12 EA1JZB -12 / -9 4 ✓ Full exchange observed
10-09 22:06 40m -10 / -18 YT4VM -11 / -16 5 ✓ Full exchange observed
10-09 21:40 40m - / -8 IV3IOU -6 / - 4 ✓ Closing fragment
10-09 21:15 40m - / - 9A1AR +2 / - 2 ✓ Closing fragment
10-09 21:09 40m - / -15 RU4CK -4 / - 5 Partial capture
10-09 20:22 40m - / -23 UX2QX +3 / - 3 ✓ Closing fragment
10-09 20:11 40m -2 / - M6INJ - / -18 2 Partial capture
10-09 20:09 40m +1 / -14 G8OO -6 / -11 3 Partial capture
10-09 20:06 40m -2 / - SP5OKO - / -17 4 ✓ Closing fragment
10-09 19:58 40m - / -8 PG5FRL -4 / - 2 Partial capture
10-09 19:47 40m - / -16 PE1LDS -17 / - 2 Partial capture
10-09 19:39 40m - / -15 UR9QQ -4 / - 3 ✓ Closing fragment
10-09 19:31 40m - / -12 EA4IFN -14 / - 2 Partial capture
10-09 19:28 40m - / -14 UR5TOC -1 / - 3 ✓ Closing fragment
10-09 19:24 40m -2 / - SP9MOC - / -4 2 ✓ Closing fragment
10-09 19:22 40m -5 / - SP5TAB - / -17 2 Partial capture
10-09 19:21 40m -6 / - SP7TF - / -14 2 ✓ Closing fragment
10-09 19:19 40m -4 / - SQ3MQD - / -20 2 ✓ Closing fragment
10-09 19:15 40m -6 / - ON3URT -10 / -10 4 ✓ Closing observed
10-09 19:14 40m -2 / - M7KBB - / -16 2 ✓ Closing fragment
10-09 19:10 40m -9 / - PE1FBC -8 / -13 6 ✓ Closing observed
10-09 19:02 40m -8 / -5 F8MRQ -1 / -18 5 ✓ Full exchange observed
10-09 19:00 40m -10 / -12 YO4NF -5 / -11 3 Partial capture
10-09 18:55 40m - / - HB9MZI -14 / - 3 Partial capture
10-09 18:52 40m - / -18 UR9QQ -6 / - 6 Partial capture
10-09 18:49 40m - / -4 DK7ZT -3 / - 5 ✓ Closing fragment
10-09 18:49 40m - / +1 F4PAN +4 / - 4 ✓ Closing fragment
10-09 18:48 40m - / -15 EA5HM -4 / - 3 ✓ Closing fragment
10-09 18:46 40m - / -13 DL7FE -1 / - 2 Partial capture
10-09 18:41 40m - / -6 F8VNU -1 / - 4 ✓ Closing fragment
10-09 18:34 40m - / - LY3QR -5 / - 4 Partial capture
10-09 18:27 40m - / -13 PA7D -12 / - 2 Partial capture
10-09 18:15 40m - / 0 DH4PAP -5 / - 7 Partial capture
10-09 18:14 40m - / - CT7AUT -9 / - 3 Partial capture
10-09 18:13 40m -11 / - DL/AD2LX -12 / - 3 ✓ Closing observed
10-09 18:08 40m +5 / -3 DL9PN +12 / -14 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
083445 -15 1769  IU3UJX DL7FE JN49 (x2)
083515  -2  788  IU3UJX DK2FM -08
083545 -17 1770  IU3UJX DL7FE R-06
083545  +1  788  IU3UJX DK2FM -08 (x3)
083745  -9 1287  IU3UJX F4PAN JN26
084145 -16 1851  IU3UJX IZ5CMG JN53 (x3)
084415 -17 1279  IU3UJX IN3EZU JN56 (x2)
084530 -13  988  IU3UJX SP2GTI -21
084615  -8  788  IU3UJX DA1ST JO41
80m 
UTC    dB Audio  Message
172115  -8 2355  IU3UJX ON4CJU RR73
172145 -10 2355  IU3UJX TNX GL
172200  -9  717  CQ WWA IU3UJX (x2)
172245  +8  717  IU3UJX SQ5PIK -17
172300  -9  717  SQ5PIK IU3UJX R-12 (x2)
172345  +6  717  IU3UJX SQ5PIK RR73
172430  -8  717  SP5TAB IU3UJX -18 (x2)
172530  -5  717  CQ WWA IU3UJX (x2)
172615  -9 1450  IU3UJX SP5TAB KO02
172630 -10  717  CQ WWA IU3UJX
172645 -15 1450  IU3UJX SP5TAB KO02

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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