F4NJU — 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: France Most frequent locator attributed to this token: JN29

Receiver-side FT8 activity involving F4NJU, decoded by SO8OO in southeastern Poland. 735 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 39 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-05.

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 735 FT8 messages attributed to F4NJU as the transmitting token by decoded message structure across 39 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (48%), followed by 80 m (34%) and 40 m (18%). The busiest six-hour window was 18:00-00:00 UTC, containing 46% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

735
Messages attributed
39
UTC dates decoded
203
Active 15-min windows
-14 dB
Estimated median S/N

Bands

80m · 250 40m · 130 20m · 355
First attributed message: 2026-06-06
Last attributed message: 2026-11-05 05:54 UTC

Observed FT8 message patterns

Attributed sample
735 messages
Active dates
39 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-24 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 307, moderate (-15 to -9 dB) 240, strong (≥ -8 dB) 188.

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 F4NJU 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 F4NJU

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
JN29 · 530 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,206 km (approx.)
Last such locator decoded
2026-11-05 05:18 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 UTCBandF4NJU S/NCounterpartCounterpart S/NMsgsCapture
11-05 05:57 80m - / -15 DA6DE -14 / - 5 Partial capture
11-05 05:56 80m - / -14 DL0FAW 0 / - 2 ✓ Closing fragment
11-05 05:50 80m - / -16 PA5DX +1 / - 2 Partial capture
11-05 05:50 80m -24 / -15 DA6DE -10 / -15 10 Partial capture
11-05 05:45 80m - / -14 DK1MAX +9 / - 2 ✓ Closing fragment
11-05 04:52 80m - / -8 DG8DBW +1 / - 2 ✓ Closing fragment
11-05 04:49 80m - / -14 F4EQH +9 / - 2 ✓ Closing fragment
11-05 03:15 80m -24 / -18 SQ6ELK +7 / -12 5 ✓ Full exchange observed
11-05 03:11 80m -11 / - UT5ECZ - / - 3 Partial capture
11-04 22:26 80m - / - G4DBW +1 / - 2 Partial capture
11-04 22:25 80m - / -16 PA1AZ -5 / - 2 Partial capture
11-04 21:36 80m - / -10 DL6NDW +12 / - 3 Partial capture
11-04 20:39 80m - / -13 HB9TOC +6 / - 2 ✓ Closing fragment
11-04 20:37 80m - / 0 DF5JM -19 / - 2 ✓ Closing fragment
11-04 15:10 40m - / -15 IU0RER -10 / - 2 ✓ Closing fragment
11-04 15:03 40m - / -4 DL0ZZ -9 / - 2 ✓ Closing fragment
11-04 13:22 40m - / -6 DM5ME -12 / - 2 ✓ Closing fragment
11-04 13:19 40m - / -10 HB9SFL -14 / - 2 ✓ Closing fragment
11-04 10:41 40m - / -10 DL6FCK -8 / - 2 Partial capture
11-04 08:05 40m - / -10 IW3RWZ -15 / - 4 Partial capture
11-04 08:04 40m - / -16 DM9YL -8 / - 4 ✓ Closing fragment
11-04 06:34 40m - / -17 SP3IPA -6 / - 2 ✓ Closing fragment
11-04 05:53 80m - / -12 DA6DN +2 / - 3 Partial capture
11-04 05:49 80m -24 / - DO2MOG -9 / -14 3 ✓ Closing observed
11-04 04:10 80m -20 / - S55X - / - 2 Partial capture
11-04 03:29 80m -17 / - HB9ADP +5 / -7 3 ✓ Closing observed
11-04 02:11 80m -23 / - IZ2MHT - / - 3 ✓ Closing fragment
11-04 02:09 80m - / -22 DA6SL -4 / - 2 ✓ Closing fragment
11-04 02:06 80m -14 / - DA6SL - / - 2 Partial capture
11-04 02:04 80m - / -18 OK1AMF +4 / - 2 ✓ Closing fragment
11-04 02:03 80m - / -19 F5MXH +1 / - 3 ✓ Closing fragment
11-04 02:01 80m - / -14 T77RN -10 / - 2 ✓ Closing fragment
11-04 01:05 80m - / -24 ES3V +7 / - 5 ✓ Closing fragment
11-04 01:03 80m - / -19 IZ0MIT -5 / - 2 ✓ Closing fragment
11-04 01:00 80m - / - LZ1ZF -8 / - 2 Partial capture
11-04 00:54 80m -21 / -22 OM2WQ +11 / +10 4 ✓ Full exchange observed
11-04 00:14 80m - / -14 UX5UO +2 / - 6 ✓ Closing fragment
11-03 19:01 80m - / -9 F4MUM +3 / - 2 Partial capture
11-03 17:41 40m - / -25 OK1FED +15 / - 5 ✓ Closing fragment
11-03 17:21 80m - / -12 DL3KCW -14 / - 6 ✓ Closing fragment
11-03 17:18 80m - / -14 DK0RMR +12 / - 2 ✓ Closing fragment
11-03 16:14 40m - / -16 G8YPE -12 / - 3 ✓ Closing fragment
11-03 14:53 40m - / -18 OZ5NJ -8 / - 2 ✓ Closing fragment
11-03 14:43 40m - / -4 DD1JD -4 / - 2 ✓ Closing fragment
11-03 11:12 40m - / -7 DL6YJB -14 / - 2 ✓ Closing fragment
11-03 05:16 80m - / -23 GU4WRP -5 / - 2 ✓ Closing fragment
11-03 01:54 80m - / -18 RA7E -7 / - 4 Partial capture
11-02 22:30 80m - / -22 GM1TGY -12 / - 2 ✓ Closing fragment
11-02 21:59 80m - / -19 SP5BB +6 / - 2 ✓ Closing fragment
11-02 21:39 80m - / -25 DP75BAC -7 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
055115  +2 1226  F4NJU PA5DX -16
055130  -4  978  F4NJU DA6DE -15 (x6)
055445 -24  978  DA6DE F4NJU R-15
055645  -2 1384  F4NJU DL0FAW -14 (x2)
055730 -14  978  F4NJU DA6DE -15 (x5)
40m 
UTC    dB Audio  Message
103530 -12  591  F4NJU GJ0KYZ -06
104115 -10  425  F4NJU DL6FCK -10 (x2)
131945 -13 2338  F4NJU HB9SFL -10 (x2)
132145  -7  496  F4NJU F4JDS RR73
132245 -13  906  F4NJU DM5ME -06 (x2)
150345  -8 1365  F4NJU DL0ZZ -04 (x2)
151015  -9  424  F4NJU IU0RER -15 (x2)
161545 -13 2627  F4NJU DG2EM -13
163230  -6 2953  DL4DSA F4NJU JN29
051830 -15 2620  UR5XMM F4NJU JN29
20m 
UTC    dB Audio  Message
195645  -1 1526  F4NJU IU0TYC RR73
195645  +4 1987  F4NJU EA5JLN -09
195700 -23 1996  IU0TYC F4NJU 73
195745  +0 1985  F4NJU EA5JLN -09 (x3)
062745 -15 2441  LY5A F4NJU JN29
110130  +0 1242  F4NJU R6OP RR73
110545  -6 2259  E75W F4NJU R-01
111115  -6  521  AO5FSB F4NJU JN29
181830 -18 1473  IU1DXU F4NJU JN29
192700  -1  320  2E0TIV F4NJU JN29 (x2)
192745  -5  320  F4NJU 2E0TIV RR73
192800  -3  320  2E0TIV F4NJU 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.

CW

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

Explore CW reception at SO8OO

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