F1MBL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN18

Receiver-side FT8 activity involving F1MBL, decoded by SO8OO in southeastern Poland. 941 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-31.

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 941 FT8 messages attributed to F1MBL as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (87%), followed by 40 m (11%) and 10 m (1%). The busiest six-hour window was 16:00-22:00 UTC, containing 47% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15.1 dB.

Overview

941
Messages attributed
36
UTC dates decoded
208
Active 15-min windows
-15.1 dB
Estimated median S/N

Bands

40m · 107 20m · 823 10m · 11
First attributed message: 2026-06-06
Last attributed message: 2026-08-31 08:16 UTC

Observed FT8 message patterns

Attributed sample
941 messages
Active dates
36 UTC dates
Estimated median S/N
-15.1 dB
Estimated 10th-90th percentile
-23 to -6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 466, moderate (-15 to -9 dB) 297, strong (≥ -8 dB) 178.

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 F1MBL 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 F1MBL

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
JN18 · 480 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,370 km (approx.)
Last such locator decoded
2026-08-31 08:15 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 UTCBandF1MBL S/NCounterpartCounterpart S/NMsgsCapture
08-31 08:33 20m - / -20 IZ0AIO 0 / - 4 ✓ Closing fragment
08-31 08:16 20m -16 / -21 IK6CGO -2 / - 3 ✓ Closing observed
08-30 12:50 20m -4 / -13 RU3BL +2 / - 3 ✓ Closing observed
08-30 12:40 20m -6 / - LY2BSW - / -3 2 ✓ Closing fragment
08-30 12:07 20m -2 / - SP7FID - / -4 2 Partial capture
08-30 09:05 20m -2 / - DF1DN - / -8 2 ✓ Closing fragment
08-29 09:53 20m - / -9 CT3MD +3 / - 5 Partial capture
08-29 09:49 20m - / - EA1FAW -1 / - 2 ✓ Closing fragment
08-29 08:12 20m - / -6 AO5FSB +12 / - 2 ✓ Closing fragment
08-28 19:14 20m -9 / - SQ9SF - / -1 3 ✓ Closing fragment
08-28 16:29 20m -10 / - HA7UL - / - 3 ✓ Closing fragment
08-28 09:31 10m - / -9 F6DJL -17 / - 2 ✓ Closing fragment
08-25 14:26 20m -10 / - II7MGLE - / +1 2 Partial capture
08-25 07:46 20m -7 / - YU4NMT - / 0 3 ✓ Closing fragment
08-25 07:20 20m -9 / -1 IK4LZH 0 / - 4 ✓ Full exchange observed
08-25 07:16 20m - / +2 EA7BEI +10 / - 2 ✓ Closing fragment
08-22 09:45 20m -10 / -9 PD0PMF +5 / - 3 ✓ Closing observed
08-21 13:00 10m - / - DN9CHV -8 / - 2 Partial capture
08-21 13:00 10m - / -6 DL2CZ -6 / - 2 ✓ Closing fragment
08-21 12:39 10m - / +5 DN9MJK -17 / - 2 ✓ Closing fragment
08-21 12:32 20m - / - DL2BU -1 / - 2 Partial capture
08-21 12:25 20m - / -7 ON4LDU -5 / - 3 ✓ Closing fragment
08-21 12:25 20m - / -3 OZ/DL1JGR -16 / - 8 Partial capture
08-21 12:12 20m - / +2 DL3EBJ -6 / - 2 ✓ Closing fragment
08-20 19:40 20m -11 / -17 EA8UP +9 / +9 12 ✓ Full exchange observed
08-20 19:27 20m -13 / - <...> - / +5 11 Partial capture
08-20 19:20 20m -6 / - S54NA - / +6 2 Partial capture
08-20 11:28 20m -10 / - VE3QK - / -7 2 Partial capture
08-20 08:18 20m - / -12 AO25FDM -4 / - 2 Partial capture
08-20 07:49 20m - / -7 HB9OAB -6 / - 2 ✓ Closing fragment
08-17 17:52 20m -10 / - R3PBR - / -14 2 Partial capture
08-02 15:40 20m -14 / - SH4UMN - / +1 3 ✓ Closing fragment
08-02 15:23 20m -21 / - YO8BFB - / -13 3 Partial capture
08-02 13:30 20m -23 / - SP7ROM - / -17 9 Partial capture
08-02 13:09 20m -18 / - RZ4FWA - / -9 3 ✓ Closing fragment
08-02 08:09 20m - / +1 OE5ENL -8 / - 7 Partial capture
08-02 08:08 20m -21 / - PA3AGN - / +10 2 ✓ Closing fragment
08-02 08:00 20m -20 / - PD0R -1 / -6 5 ✓ Closing observed
08-02 07:57 20m -18 / -13 PD3LKN -7 / +6 5 ✓ Full exchange observed
08-01 10:03 20m - / -18 CT1BFP -21 / - 3 Partial capture
08-01 09:42 20m -19 / -6 DF5DY -11 / 0 3 Partial capture
08-01 09:33 20m - / +6 G1UZL -20 / - 3 ✓ Closing fragment
08-01 09:07 20m -20 / - SQ8DIO - / -7 2 ✓ Closing fragment
07-31 21:24 20m -16 / - <...> - / -6 5 Partial capture
07-31 20:55 20m -15 / - BH3CFN - / -12 4 Partial capture
07-31 20:49 20m - / -8 G0VFB +2 / - 2 ✓ Closing fragment
07-31 20:44 20m - / -19 RZ4FWA -16 / - 6 Partial capture
07-31 12:15 20m -18 / - DL9KM -5 / -20 12 Partial capture
07-31 11:16 20m - / -14 F1PSX -8 / - 4 ✓ Closing fragment
07-31 09:02 20m - / -13 PD0ONS -18 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
125015  +3 1192  F1MBL RU3BL -13 (x2)
125100  -4 1191  RU3BL F1MBL 73
081215  -9 1387  CQ F1MBL JN18 (x2)
081300 -10 1387  DL9KM F1MBL -01
081500 -14 1429  CQ F1MBL JN18 (x2)
081615  +1 2566  F1MBL IK6CGO R-21
081630 -16 1429  IK6CGO F1MBL RR73
081645  -5 2566  F1MBL IK6CGO 73
083345  -1 2399  F1MBL IZ0AIO JN61 (x4)
10m 
UTC    dB Audio  Message
091900  +1  655  F1MBL ER1PL RR73
092600 -11 1144  F1MBL F6FDY 73
074300 -23 1500  CQ F1MBL JN18
123900 -20 1846  F1MBL DN9MJK R+05 (x2)
125300 -10 2153  F1MBL DO9PV R+02
125530 -11 1533  F1MBL DF8IJ JN48
130000  -7 1207  F1MBL DL2CZ R-06
130030  -8 2449  F1MBL DN9CHV JO31
130030  -5 1206  F1MBL DL2CZ 73
130100  -7 2448  F1MBL DN9CHV JO31
085630 -22 1423  F1MBL IU4PPL JN54
091430 -24 1408  F1MBL F6DJL JN38 (x3)
40m 
UTC    dB Audio  Message
064830 -24 1730  F1MBL IQ0VT JN62 (x2)
101030  +3 2771  F1MBL S57BTI JN75 (x3)
163930 -19 1433  F1MBL DL3FBI JO40 (x2)
191315  -9 1510  CQ F1MBL JN18
192215 -17 1510  UF4S F1MBL +07
192230  +1 1274  F1MBL UF4S R-10 (x2)
083800 -16 2178  F1MBL DL9ATW JO61 (x2)
202945 -19 1612  F1MBL RX3ASQ KO95
203245 -13 1812  F1MBL ED7SUN R-10

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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