F4NJZ — 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: JN25

Receiver-side FT8 activity involving F4NJZ, decoded by SO8OO in southeastern Poland. 2,074 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 65 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-13.

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 2,074 FT8 messages attributed to F4NJZ as the transmitting token by decoded message structure across 65 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (50%), followed by 20 m (30%) and 10 m (21%). The busiest six-hour window was 16:00-22:00 UTC, containing 38% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.5 dB.

Overview

2,074
Messages attributed
65
UTC dates decoded
288
Active 15-min windows
-9.5 dB
Estimated median S/N

Bands

40m · 1,030 20m · 618 10m · 426
First attributed message: 2026-06-09
Last attributed message: 2026-10-13 18:57 UTC

Observed FT8 message patterns

Attributed sample
2,074 messages
Active dates
65 UTC dates
Estimated median S/N
-9.5 dB
Estimated 10th-90th percentile
-18 to -1.5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 383, moderate (-15 to -9 dB) 786, strong (≥ -8 dB) 905.

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 F4NJZ 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 F4NJZ

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
JN25 · 1,549 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,346 km (approx.)
Last such locator decoded
2026-10-13 18:56 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 UTCBandF4NJZ S/NCounterpartCounterpart S/NMsgsCapture
10-17 23:51 40m - / - RZ4FWA -13 / - 3 Partial capture
10-13 18:55 40m - / - R2ASY -5 / - 5 Partial capture
10-13 18:48 40m - / - M9XPN -4 / - 3 Partial capture
10-13 18:42 40m - / - R2ASY -4 / - 4 Partial capture
10-13 18:42 40m - / -13 YO4NF +10 / - 2 Partial capture
10-13 18:41 40m - / - DL2FBG -17 / - 2 Partial capture
10-13 18:41 40m - / - S51PV -10 / - 4 Partial capture
10-13 18:40 40m - / - DL9GCW +6 / - 2 Partial capture
10-13 18:21 40m - / - SM7MDI -15 / - 3 Partial capture
10-13 18:19 40m - / - M0IEP -8 / - 4 Partial capture
10-13 18:18 40m - / +2 ON3ZEP -19 / - 2 Partial capture
10-13 18:18 40m - / -13 YO4NF +3 / - 2 Partial capture
10-13 18:16 40m - / - YO3GJE -18 / - 3 Partial capture
10-13 18:15 40m - / - DL9KM -9 / - 6 Partial capture
10-13 18:15 40m - / +3 ON3ZEP -20 / - 2 Partial capture
10-13 18:15 40m - / - R2ASY +2 / - 2 Partial capture
10-13 18:12 40m - / - RW1CW -14 / - 2 Partial capture
10-13 18:00 40m - / - R2ASY 0 / - 2 Partial capture
10-13 17:47 40m - / - RW1CW -12 / - 2 Partial capture
10-13 17:43 40m - / - M0IEP -10 / - 5 Partial capture
10-13 17:42 40m - / -20 R1AI 0 / - 6 Partial capture
10-13 17:42 40m - / - RW1CW -12 / - 3 Partial capture
10-13 17:38 40m - / - R2ASY +5 / - 4 Partial capture
10-13 17:32 40m -8 / -17 RA4CPA -8 / - 2 ✓ Closing observed
10-13 17:31 40m - / - M9XPN -4 / - 2 Partial capture
10-13 17:29 40m - / - R3DHP +6 / - 2 Partial capture
10-13 17:27 40m - / - DC6MT -10 / - 2 Partial capture
10-13 17:24 40m - / - ON7AN +6 / - 2 Partial capture
10-13 17:23 40m - / - R2ASY 0 / - 2 Partial capture
10-13 17:22 40m - / - DH5BM +3 / - 7 Partial capture
10-12 10:39 40m - / - PC2F -12 / - 2 Partial capture
10-12 10:32 40m - / - S53AK -4 / - 4 Partial capture
10-12 10:28 40m - / - DL9KM -11 / - 7 Partial capture
10-11 19:38 40m -13 / - SQ4INW - / -10 3 ✓ Closing fragment
10-09 04:56 40m -9 / - US3EW - / -20 10 Partial capture
10-09 04:49 40m +2 / - US3EW - / -20 2 Partial capture
10-09 04:17 40m - / - RV6F -18 / - 3 Partial capture
10-09 04:05 40m - / - RZ4FWA -14 / - 3 Partial capture
10-09 04:00 40m - / -14 R4IK -6 / - 2 Partial capture
10-09 03:47 40m -4 / - AA4NP - / - 3 Partial capture
10-09 03:37 40m -3 / - ND9M - / - 11 Partial capture
10-09 03:35 40m 0 / - UD8S - / - 4 Partial capture
10-09 03:33 40m -5 / - RZ6ALZ -15 / - 3 ✓ Closing observed
10-09 03:27 40m 0 / - LY1NM - / -14 2 ✓ Closing fragment
10-08 15:00 40m - / - SP9FF -14 / - 3 Partial capture
10-08 04:31 40m - / -19 YO4NF -10 / - 2 Partial capture
10-08 04:27 40m - / -14 SV8NAJ -13 / - 14 ✓ Closing fragment
10-04 22:40 40m -12 / - WH8JKI - / -19 12 Partial capture
10-04 22:39 40m - / - RZ4FWA -14 / - 3 Partial capture
10-04 21:37 40m -5 / - IW9GTD -18 / -10 4 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
185400  -6 2539  CQ F4NJZ JN25 (x3)
185515  -4 2794  F4NJZ R2ASY KO85
185530  -5 2539  CQ F4NJZ JN25
185545  -5 2794  F4NJZ R2ASY KO85
185600  -8 2539  CQ F4NJZ JN25
185615  -4 2794  F4NJZ R2ASY KO85
185630  -7 2539  CQ F4NJZ JN25
185645  -6 2794  F4NJZ R2ASY KO85 (x2)
185730  +0 2540  SQ2BXI F4NJZ RR73
235145 -12 1773  F4NJZ RZ4FWA LO23 (x3)
10m 
UTC    dB Audio  Message
112800 -12 2505  DL3NGN F4NJZ 73
133045 -20 2028  F4NJZ I8JPO JM88
085430  -7 2788  CQ F4NJZ JN25 (x2)
142445  -4  418  F4NJZ 4Z5AY KM72 (x11)
80m 
UTC    dB Audio  Message
193630 -23 1302  F4NJZ F5RMK RR73
194600 -11 1113  F4NJZ DK7ZT -12 (x2)
211500  -5 2403  F4NJZ DK6WS -20 (x2)
211600 -18  700  F4NJZ EA1IOK IN62 (x3)
20m 
UTC    dB Audio  Message
175615  -1 2446  DG8MPI F4NJZ R-19
180045  +1 2911  F4NJZ DG8MPI -04
180100  +4 2448  DG8MPI F4NJZ JN25
180115  +3 2911  F4NJZ DG8MPI -04
180130 +12 2448  DG8MPI F4NJZ JN25
180145  +6 2910  F4NJZ DG8MPI -04
180200 +10 2448  R6LMH F4NJZ JN25
180215  +8 2910  F4NJZ DG8MPI -04
180230  -1 2448  R6LMH F4NJZ JN25 (x2)
180315  +4 2910  F4NJZ DG8MPI -04
180330  +2 2447  R6LMH F4NJZ JN25
180345 +10 2910  F4NJZ DG8MPI -04 (x3)

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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