F4FMB — 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: IN96

Receiver-side FT8 activity involving F4FMB, decoded by SO8OO in southeastern Poland. 61 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-29 and 2026-10-09.

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 61 FT8 messages attributed to F4FMB as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (44%), followed by 20 m (39%) and 80 m (16%). Several six-hour UTC windows tied for the largest share (84%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 10 40m · 27 20m · 24

First attributed message: 2026-06-29
Last attributed message: 2026-10-09 18:05 UTC

Observed FT8 message patterns

Attributed sample: 61 messages
Active dates: 7 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -12 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 43.

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 F4FMB in decoded directed-looking exchanges:

TM4GGR · France ×5 F1PBZ · France RI1FJL · Franz Josef Land SP1MGM · Poland YO6LM · Romania IK2ZJR · Italy JA4FKX · Japan OZ9FF · Denmark VJ6X · Australia

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 F4FMB

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: IN96 · 38 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,724 km (approx.)
Last such locator decoded: 2026-10-09 18:02 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 UTC	Band	F4FMB S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-09 18:04	80m	-9 / -	ON6CQ	- / -8	2	Partial capture
10-09 18:02	80m	-8 / -	TM4GGR	-12 / -	5	✓ Full exchange observed
10-09 17:36	60m	- / -	ON7GB	+3 / -	5	Partial capture
10-09 05:31	80m	-11 / -	TM4GGR	-18 / +10	4	✓ Closing observed
10-05 20:07	80m	- / -	EA1IOK	-10 / -	2	Partial capture
10-05 20:06	80m	- / -	DO8JB	-9 / -	4	Partial capture
10-05 20:04	80m	- / -4	TM4GGR	-12 / -	2	✓ Closing fragment
10-02 20:11	40m	-8 / -	JA4FKX	-24 / -7	3	✓ Closing observed
10-02 20:02	40m	-5 / -	JA4FKX	- / -8	3	Partial capture
10-02 19:57	40m	-4 / -	BI3UPU	- / -18	3	Partial capture
10-02 19:48	40m	+1 / -	VJ6X	- / -13	6	✓ Closing fragment
10-02 19:38	40m	-7 / -	VJ6X	- / -	7	Partial capture
10-02 17:03	40m	-9 / +4	TM4GGR	-10 / +2	6	✓ Full exchange observed
09-26 08:28	40m	- / +3	IK2ZJR	-15 / -	3	✓ Closing fragment
09-19 11:03	40m	- / -10	OZ9FF	-12 / -	2	✓ Closing fragment
08-27 17:38	20m	-3 / -	RI1FJL	- / -8	3	✓ Closing fragment
08-26 14:28	20m	+3 / -	RI1FJL	- / -	4	Partial capture
08-09 11:13	20m	- / -5	F1PBZ	-14 / -	2	✓ Closing fragment
08-09 11:09	20m	- / -	SP1MGM	-2 / -	2	✓ Closing fragment
08-09 11:04	20m	- / -10	YO6LM	-8 / -	2	✓ Closing fragment
08-09 11:01	20m	- / -	SP1MGM	-4 / -	4	Partial capture
08-09 10:53	20m	- / -24	SP1MGM	-13 / -	8	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
195045  +4 2439  VJ6X F4FMB IN96 (x3)
195745  -6 1962  BI3UPU F4FMB -18 (x3)
200230  -3 1943  JA4FKX F4FMB R-08 (x4)
201115 -24 1965  F4FMB JA4FKX RR73
201130  -5 1985  JA4FKX F4FMB 73
103745 -14 2119  F4FMB IZ3EAW JN55
103945  -7 2983  F4FMB F4BYA JN19
104045 -18 1854  F4FMB IZ3EAW JN55

80m

UTC    dB Audio  Message
200745 -12  559  F4FMB EA1IOK IN62
200915  -5  857  F4FMB DO8JB JO32 (x2)
052700 -14 1970  TM4GGR F4FMB IN96 (x3)
053215 -18 1461  F4FMB TM4GGR RR73
053230  -9 1462  TM4GGR F4FMB 73 (x2)
180300 -13 1455  F4FMB TM4GGR +23
180315  -6 1455  TM4GGR F4FMB R+13
180330 -12 1455  F4FMB TM4GGR RR73
180345  -5 1455  TM4GGR F4FMB 73
180445  -7 2110  ON6CQ F4FMB -08 (x2)

60m

UTC    dB Audio  Message
173645  +2 2043  F4FMB ON7GB JO21
173715 -21 1562  F4FMB TM4GGR RR73
173715  +3 2043  F4FMB ON7GB JO21 (x4)

20m

UTC    dB Audio  Message
110245  -1 2296  F4FMB SP1MGM JO73
110445 -12 2488  F4FMB YO6LM -10
110445 -16 2296  F4FMB DK3HV JO31
110545  -4 2488  F4FMB YO6LM RR73
110945  -5 2203  F4FMB SP1MGM JO73 (x2)
111315  -9 2429  F4FMB F1PBZ -05 (x2)
142845  +4 2032  RI1FJL F4FMB IN96 (x7)

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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