F4MUZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN12

Receiver-side FT8 activity involving F4MUZ, decoded by SO8OO in southeastern Poland. 60 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-12 and 2026-07-26.

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 60 FT8 messages attributed to F4MUZ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (98%), followed by 40 m (2%). Several six-hour UTC windows tied for the largest share (50%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

60
Messages attributed
4
UTC dates decoded
12
Active 15-min windows
-8 dB
Estimated median S/N

Bands

40m · 1 20m · 59
First attributed message: 2026-07-12
Last attributed message: 2026-07-26 12:43 UTC

Observed FT8 message patterns

Attributed sample
60 messages
Active dates
4 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-12 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 31.

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 F4MUZ 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 F4MUZ

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
JN12 · 29 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,659 km (approx.)
Last such locator decoded
2026-07-26 12:43 UTC

Other locator fields attributed to this token: JN03 (6).

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 UTCBandF4MUZ S/NCounterpartCounterpart S/NMsgsCapture
07-26 19:10 20m - / -11 EA4T -8 / - 3 ✓ Closing fragment
07-26 19:03 20m - / - M7GYP -17 / - 2 Partial capture
07-26 12:42 20m -10 / - SP9DAT - / - 2 Partial capture
07-26 12:38 20m -7 / - EA8DOY - / - 3 Partial capture
07-26 12:36 20m - / -16 G7SQC -22 / - 2 Partial capture
07-26 12:21 20m -8 / - DK7JR - / -2 2 ✓ Closing fragment
07-26 06:36 20m -11 / - RA6OY +4 / -16 8 Partial capture
07-26 06:33 20m - / - OD5KU -2 / - 7 Partial capture
07-26 06:24 20m -10 / - UR5TOB - / -16 2 Partial capture
07-26 05:46 40m - / - LZ3CB -16 / - 2 Partial capture
07-26 05:35 40m - / -14 DJ0MA -6 / - 3 Partial capture
07-26 05:35 40m - / - PE1NPS -13 / - 3 Partial capture
07-26 05:30 40m - / - ON5HE -11 / - 3 ✓ Closing fragment
07-26 05:25 40m - / - SP1TJ -3 / - 2 Partial capture
07-26 05:21 40m - / -9 DJ0MAB -2 / - 3 ✓ Closing fragment
07-25 19:29 40m - / -24 SP9MRP -3 / - 9 ✓ Closing fragment
07-25 19:19 40m - / - ON7DE -22 / - 2 Partial capture
07-25 19:19 40m - / - R6FX -12 / - 2 Partial capture
07-25 19:04 20m - / -19 TA2ANK -4 / - 2 ✓ Closing fragment
07-25 05:47 20m -9 / - GM0GDD - / - 3 Partial capture
07-25 05:46 20m - / - YO5EEE -7 / - 12 Partial capture
07-25 05:41 20m -8 / - VK2GQR - / -24 5 Partial capture
07-25 05:37 20m -8 / - GM0GDD - / - 2 Partial capture
07-25 05:31 20m - / - SM6KKX -12 / - 2 Partial capture
07-25 05:25 20m -11 / - Z62NS - / - 5 ✓ Closing fragment
07-25 05:05 40m - / -11 S58MU -3 / - 3 ✓ Closing fragment
07-25 05:03 40m - / +2 DL3MIB -8 / - 3 ✓ Closing fragment
07-25 04:45 40m - / -16 DA1ST -7 / - 2 Partial capture
07-25 04:42 40m - / - 9A4ZM -6 / - 2 Partial capture
07-24 20:13 40m - / -14 PD0LH -18 / - 4 ✓ Closing fragment
07-24 20:12 40m - / -15 PD3AN -21 / - 2 Partial capture
07-24 20:08 40m - / -23 UR5ZHJ -8 / - 4 ✓ Closing fragment
07-24 20:07 40m - / - HG8LXL -6 / - 4 Partial capture
07-24 20:07 40m - / - PI4DX +5 / - 4 Partial capture
07-24 20:00 40m - / - DK6MR -18 / - 2 Partial capture
07-24 19:56 40m - / -15 DG0JW -4 / - 3 ✓ Closing fragment
07-24 19:52 40m - / -11 OE1TKS +5 / - 2 ✓ Closing fragment
07-23 20:31 40m - / -9 PA7D -18 / - 3 ✓ Closing fragment
07-23 20:27 40m - / - DL2VN -14 / - 2 Partial capture
07-23 20:22 40m - / - DF3IS +1 / - 2 Partial capture
07-23 20:12 40m - / - DL7DL -10 / - 2 Partial capture
07-23 20:11 40m - / -1 ON6SAT -11 / - 3 ✓ Closing fragment
07-23 20:07 40m - / - DL7DL -11 / - 2 Partial capture
07-23 20:07 40m - / -16 RN6MA +4 / - 2 Partial capture
07-23 20:06 40m - / - PD0LBY -18 / - 2 Partial capture
07-23 20:05 40m - / - SP9UPH -24 / - 2 Partial capture
07-12 19:58 20m -5 / - YO9HP - / -11 7 ✓ Closing fragment
07-12 19:54 20m -1 / -2 UR3HC -9 / - 6 ✓ Closing observed
07-12 19:52 20m -6 / -8 EA5W -12 / 0 11 ✓ Full exchange observed
07-10 19:47 40m - / - F4BJR -16 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
122200 -10  431  DK7JR F4MUZ RR73
122230 -10  431  YO7CKQ/P F4MUZ +03
123600 -21 1681  F4MUZ G7SQC -16 (x2)
123845  -8  377  EA8DOY F4MUZ JN12 (x3)
124245 -12  376  SP9DAT F4MUZ JN12 (x2)
190015  -7 2724  F4MUZ PD9FLX JO22
190315 -16 1841  F4MUZ M7GYP IO93 (x2)
191015  -8 1376  F4MUZ EA4T -11 (x3)
40m 
UTC    dB Audio  Message
052200  -1  538  F4MUZ DJ0MAB R-09 (x2)
052530  -3  540  F4MUZ SP1TJ JO74 (x2)
053030 -11  792  F4MUZ ON5HE JO20 (x3)
053530 -15 2360  F4MUZ PE1NPS JO22
053530  -6 2792  F4MUZ DJ0MA JN59
053600 -13 2361  F4MUZ PE1NPS JO22
053600  -9 2792  F4MUZ DJ0MA -14
053630 -11 2360  F4MUZ PE1NPS JO22
053700  -4 2812  F4MUZ DJ0MA -11
054600 -17 1985  F4MUZ LZ3CB KN32 (x2)

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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