F4MSA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: IN97

Receiver-side FT8 activity involving F4MSA, decoded by SO8OO in southeastern Poland. 1,241 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 34 UTC dates in the available aggregate history. Observed between 2026-08-08 and 2026-10-10.

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 1,241 FT8 messages attributed to F4MSA as the transmitting token by decoded message structure across 34 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (84%), followed by 40 m (14%) and 10 m (2%). Most decodes (66%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -5 dB.

Overview

1,241

Messages attributed

UTC dates decoded

178

Active 15-min windows

-5 dB

Estimated median S/N

Bands

40m · 174 20m · 1,045 10m · 22

First attributed message: 2026-08-08
Last attributed message: 2026-10-10 08:02 UTC

Observed FT8 message patterns

Attributed sample: 1,241 messages
Active dates: 34 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -15 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 110, moderate (-15 to -9 dB) 289, strong (≥ -8 dB) 842.

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 F4MSA in decoded directed-looking exchanges:

PH7GD · Netherlands ×3 CT3MD · Madeira Islands ×2 7X2KF · Algeria ×2 9A4ZM · Croatia ×2 ES2AJ · Estonia ×2 F4HSB · France ×2 G0RVY · England ×2 G8IXM · England ×2 HA1BF · Hungary ×2 HS0ZOY · Thailand ×2 IK4TVP · Italy ×2 LZ2VQ · Bulgaria ×2

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 F4MSA

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: IN97 · 395 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,687 km (approx.)
Last such locator decoded: 2026-10-10 07:53 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	F4MSA S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-10 07:57	40m	-8 / -	G0LKL	- / +4	2	✓ Closing fragment
10-09 15:44	80m	- / -4	F4GVO	+1 / -	2	✓ Closing fragment
10-09 15:34	80m	- / -15	DL8TV	+5 / -	3	✓ Closing fragment
10-09 15:12	40m	-11 / -	G4BWQ	- / -8	2	✓ Closing fragment
10-09 15:11	40m	-11 / -15	SP5HQZ	-3 / -9	8	✓ Full exchange observed
10-09 15:08	40m	-12 / -	EA3BKG	- / -6	2	✓ Closing fragment
10-09 15:06	40m	-11 / +10	ON5HE	+1 / -	4	✓ Closing observed
10-09 15:00	40m	-10 / +5	G0RVY	-10 / -	5	✓ Full exchange observed
10-09 14:57	40m	- / +5	DL8TV	+6 / -	2	✓ Closing fragment
10-09 14:55	40m	-8 / -6	DJ1TU	+1 / +9	5	✓ Full exchange observed
10-07 14:59	40m	- / -20	DL3MIB	+8 / -	3	✓ Closing fragment
10-05 15:33	40m	-3 / +6	DK8MT	-6 / -6	4	✓ Full exchange observed
10-02 08:18	40m	-11 / -	KC2NJ	- / -25	3	Partial capture
10-01 14:53	40m	-4 / -	GW6OHV	- / +6	2	✓ Closing fragment
10-01 13:51	40m	- / -	SP6FME	-8 / -	2	Partial capture
09-30 16:04	40m	-5 / -	TA3NK	-10 / -14	3	✓ Closing observed
09-30 16:00	40m	-3 / +2	G0UDE	-17 / +8	2	Partial capture
09-30 15:59	40m	-5 / -	DF7QR	+4 / +8	3	✓ Closing observed
09-30 07:14	40m	- / -	ON4KEB	-2 / -	2	✓ Closing fragment
09-30 07:12	40m	- / +2	GJ0KYZ	-9 / -	2	✓ Closing fragment
09-30 07:09	40m	-8 / -	SP6AXW	- / -13	2	Partial capture
09-30 07:07	40m	-10 / -	F6FDY	- / -13	2	✓ Closing fragment
09-30 07:06	40m	-9 / -	OE8PIT	0 / -	3	✓ Closing observed
09-29 07:01	40m	-3 / -	ZL2CC	- / -	3	Partial capture
09-29 06:59	40m	-2 / -	HB9FMC	- / -3	2	✓ Closing fragment
09-29 06:57	40m	-4 / -	YV5YAM	- / -	3	Partial capture
09-29 06:56	40m	-4 / -	DL5KMR	- / -21	2	✓ Closing fragment
09-29 06:54	40m	-5 / -	KC4WQ	- / -25	2	Partial capture
09-29 06:54	40m	-8 / -	F8VNU	-17 / -3	3	✓ Closing observed
09-29 06:53	40m	-6 / -	ON2BER	- / -7	2	✓ Closing fragment
09-29 06:49	40m	+1 / -	G8IXM	- / -9	2	✓ Closing fragment
09-29 06:48	40m	-2 / -	R1ZDG	- / -25	2	✓ Closing fragment
09-26 04:35	40m	+2 / -	TN8GD	- / -21	3	Partial capture
09-26 04:29	40m	-3 / -	TN8GD	- / -21	3	Partial capture
09-23 16:01	40m	- / -6	DL2YCP	-11 / -	2	Partial capture
09-23 15:56	40m	-12 / -4	YL3CW	-11 / -2	4	✓ Full exchange observed
09-23 15:53	40m	-17 / -12	YO8RAW	+12 / -	3	✓ Closing observed
09-23 15:45	80m	- / -17	DK7ZT	+8 / -	2	✓ Closing fragment
09-23 15:29	40m	-7 / -	DF3IAL	-20 / -5	2	✓ Closing observed
09-23 15:27	40m	-8 / +4	F4PCM	-5 / -	3	✓ Full exchange observed
09-23 15:26	40m	-7 / -	SM7MDI	- / -14	3	✓ Closing fragment
09-23 15:24	40m	- / -7	DL0ERZ	-9 / -	3	✓ Closing fragment
09-23 14:01	40m	- / 0	PA7ZZ	-9 / -	3	✓ Closing fragment
09-20 15:04	40m	- / -	OE6TNO	+4 / -	9	Partial capture
09-16 09:01	40m	- / +4	IK4TVP	-19 / -	5	✓ Closing fragment
09-15 16:08	40m	- / -1	EI6JMB	-10 / -	2	✓ Closing fragment
09-13 15:00	40m	- / -14	IN3IZQ	-12 / -	2	✓ Closing fragment
09-13 14:51	40m	- / -7	DL6EL	+3 / -	3	✓ Closing fragment
09-13 14:48	40m	- / -4	F6BEC	-11 / -	3	✓ Closing fragment
09-12 08:48	40m	- / -12	OZ9FF	-5 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
151230  -4  976  F4MSA SP5HQZ R-12
151245 -10  977  G4BWQ F4MSA -08
151300  -2  976  F4MSA SP5HQZ R-12
151345 -12  977  G4BWQ F4MSA RR73
151415 -13  977  SP5HQZ F4MSA RR73
151430  -3  976  F4MSA SP5HQZ 73
152945  -7  977  M7KSV F4MSA RR73
075345  -9  377  CQ F4MSA IN97
075415  -6  377  G4HUE F4MSA +15
075545  -8  377  K8OCN F4MSA -25
075715  -6  377  G0LKL F4MSA +04 (x2)
075915  -8  377  SP6AXW F4MSA -09
080015  -9  377  KB3HGW F4MSA -25
080245 -10  377  YV5JLO F4MSA -20

80m

UTC    dB Audio  Message
154515  +9 1149  F4MSA DK7ZT -17 (x2)
163545 +11  491  F4MSA OE5DML JN78
153430  +3 2132  F4MSA DL8TV JN49 (x3)
154445  +1  303  F4MSA F4GVO -04 (x2)
155700 -24 1121  F4MSA IW2MLJ R-17

20m

UTC    dB Audio  Message
191530  +7  346  CQ F4MSA IN97
191700  -5  346  <...> F4MSA IN97 (x3)
192045  +2  346  WA4FU F4MSA IN97
192100 -14 1234  F4MSA WA4FU -07
192115  -2  346  WA4FU F4MSA R-07 (x4)
192345  +1  346  E74MW F4MSA IN97 (x3)
195400  -4  358  SV2ROG F4MSA -13 (x2)

10m

UTC    dB Audio  Message
105430 -17 1202  EA1IOK F4MSA -05
105715 -15  915  G4ZCN F4MSA +03
110245 -17 1117  SP3JHY F4MSA -04 (x2)
110445 -17 1117  US2YW F4MSA -16
110545 -20 1117  OE5OSP F4MSA -15
111045 -23 1193  UA3WDO F4MSA -16
111400 -21 1267  LY3PW F4MSA RR73
081415 -15 2115  F4MSA R6DWD -19
083300  -7  485  DL6RS F4MSA RR73
083600 -19 1021  GM0VGI F4MSA -10
212015  +3 2948  F4MSA DO1FDK JO41 (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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