F5MJN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN09

Receiver-side FT8 activity involving F5MJN, decoded by SO8OO in southeastern Poland. 1,992 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 25 UTC dates in the available aggregate history. Observed between 2026-08-01 and 2026-09-14.

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 1,992 FT8 messages attributed to F5MJN as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (42%), followed by 40 m (36%) and 80 m (22%). The busiest six-hour window was 19:00-01:00 UTC, containing 49% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -6 dB.

Overview

1,992
Messages attributed
25
UTC dates decoded
181
Active 15-min windows
-6 dB
Estimated median S/N

Bands

80m · 447 40m · 708 20m · 837
First attributed message: 2026-08-01
Last attributed message: 2026-09-14 22:23 UTC

Observed FT8 message patterns

Attributed sample
1,992 messages
Active dates
25 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-15 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 194, moderate (-15 to -9 dB) 585, strong (≥ -8 dB) 1,213.

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 F5MJN 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 F5MJN

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
JN09 · 1,293 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,491 km (approx.)
Last such locator decoded
2026-09-14 22:23 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 UTCBandF5MJN S/NCounterpartCounterpart S/NMsgsCapture
09-14 22:23 40m -7 / - TN8GD - / - 2 Partial capture
09-06 21:35 40m -5 / - VP2MAA - / - 2 Partial capture
09-05 22:53 40m -7 / -3 Z62NS 0 / - 4 ✓ Closing observed
09-05 22:50 40m -5 / -8 EX7CQ +6 / -16 3 ✓ Full exchange observed
09-02 07:43 40m - / - OE3FVU -7 / - 6 Partial capture
09-02 07:39 40m - / -20 OK1HEH -10 / - 5 ✓ Closing fragment
09-01 09:47 40m - / -13 HA3HZ -4 / - 2 ✓ Closing fragment
09-01 09:47 40m - / - PE9JAN -17 / - 4 Partial capture
08-31 10:56 20m +4 / - YO2MD - / -4 3 ✓ Closing fragment
08-31 10:55 20m +1 / -16 LA6RJA -4 / -12 5 ✓ Full exchange observed
08-31 10:52 20m +4 / - F5SFT - / - 5 Partial capture
08-30 18:22 20m - / -6 TA3GO +6 / - 2 ✓ Closing fragment
08-30 18:09 20m -2 / - <...> - / - 2 Partial capture
08-30 18:06 20m 0 / - K1QD - / - 2 Partial capture
08-30 17:50 20m +15 / - A61OK - / - 6 Partial capture
08-30 17:45 20m +8 / - BI4MPH - / - 8 Partial capture
08-30 17:39 20m +9 / - WA4FU - / - 11 Partial capture
08-30 17:36 20m +13 / - N3LH - / - 7 Partial capture
08-30 17:32 20m +9 / - WA4FU - / - 7 Partial capture
08-30 17:30 20m +12 / - YC2YIZ - / - 3 Partial capture
08-30 17:24 20m +4 / - OX3AH - / -14 8 ✓ Closing fragment
08-30 17:18 20m +7 / - YC2YIZ - / - 10 Partial capture
08-30 17:16 20m +4 / - EX7DY - / -12 2 Partial capture
08-30 09:28 20m +1 / - PY1SX - / -22 3 ✓ Closing fragment
08-30 09:25 20m +8 / - <...> - / - 7 Partial capture
08-26 17:04 20m 0 / - UB0SMX/P - / - 5 Partial capture
08-26 17:01 20m +6 / - 8Z1IT - / - 6 Partial capture
08-26 16:52 20m +7 / - 8Z1IT - / - 14 Partial capture
08-26 16:42 20m +5 / - <...> - / - 17 Partial capture
08-26 16:35 20m +11 / - TA3TCW - / -20 11 Partial capture
08-26 16:33 20m +10 / - <...> - / - 4 Partial capture
08-26 16:25 20m +16 / - 4X1ST - / -13 9 ✓ Closing fragment
08-26 16:21 20m +13 / - R8LDT -6 / -19 10 ✓ Closing observed
08-26 16:16 20m +6 / -5 CN8NS -13 / -3 3 Partial capture
08-26 16:09 20m +9 / - <...> - / - 13 Partial capture
08-26 16:07 20m +6 / - TA2EHI - / -14 3 ✓ Closing fragment
08-26 16:03 20m +9 / - UB8AHK - / - 7 Partial capture
08-26 16:00 20m +4 / - WV2B - / -13 3 ✓ Closing fragment
08-26 15:57 20m +14 / -10 BU2FW -24 / -16 5 ✓ Full exchange observed
08-26 15:52 20m +8 / - UA9JGS - / - 9 Partial capture
08-25 14:43 20m +8 / -11 R4FDP +18 / -2 5 ✓ Full exchange observed
08-25 14:42 40m - / - IK4LZH -7 / - 4 Partial capture
08-23 09:04 20m +8 / - K4A - / -18 2 ✓ Closing fragment
08-23 09:02 20m 0 / - ZV8R - / -14 2 ✓ Closing fragment
08-22 22:05 20m -12 / -3 9K2MP 0 / -10 7 ✓ Full exchange observed
08-22 19:55 20m +12 / - K2GSC - / - 3 Partial capture
08-22 19:52 20m +11 / - WA3AEP - / - 3 ✓ Closing fragment
08-22 19:51 20m +13 / -5 EA4D -6 / -13 5 ✓ Full exchange observed
08-22 19:45 20m - / - F4BYA -7 / - 3 Partial capture
08-22 19:42 20m - / -14 F1ODM -8 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
074600  -3 1802  F5MJN OE3FVU JN78
225030  +6 1338  F5MJN EX7CQ -08
225045  -5  620  EX7CQ F5MJN R-16
225100  +6 1339  F5MJN EX7CQ RR73
225145  -3  620  YV6BXN F5MJN JN09
225215  +3  620  PP2CS F5MJN JN09
225315  -7 1126  Z62NS F5MJN JN09
225400  +1 1405  F5MJN Z62NS -03 (x3)
213545  -5  585  VP2MAA F5MJN JN09 (x2)
222315  -3  530  TN8GD F5MJN JN09 (x2)
223200  -6 2271  F5MJN IS0LJG JN40
20m 
UTC    dB Audio  Message
182230 -11 2683  F5MJN OE9GWV JN47
105230  +2  435  F5SFT F5MJN JN09 (x5)
105500  +4  435  LA6RJA F5MJN JN09
105515  +0  903  F5MJN LA6RJA -16
105530  +3  435  LA6RJA F5MJN R-12
105545  -7  903  F5MJN LA6RJA RR73
105600  -3  435  LA6RJA F5MJN 73
105630  -1  435  YO2MD F5MJN JN09 (x3)
105900  -7  657  F5MJN CT1EDG RRR
80m 
UTC    dB Audio  Message
012230 -11 1201  F5MJN F4EWK -09
012245  -8  740  F4EWK F5MJN R-12
012245  -2 1500  F5MJN DL1UDO JO31
012300 -18 1201  F5MJN F4EWK RR73
012315  -2  740  F4EWK F5MJN 73
012345  -4  740  W9HT F5MJN JN09
012345 -22 1985  F5MJN MM0DXL IO75
012415  -5  740  W9HT F5MJN JN09
012415 -21 1984  F5MJN MM0DXL IO75
012445  -2  740  W9HT F5MJN JN09
012445 -22 1985  F5MJN MM0DXL IO75
012515  -2  740  W9HT F5MJN JN09 (x4)

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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