F4MZI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JO10

Receiver-side FT8 activity involving F4MZI, decoded by SO8OO in southeastern Poland. 3,850 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 54 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-11.

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 3,850 FT8 messages attributed to F4MZI as the transmitting token by decoded message structure across 54 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (48%), followed by 40 m (37%) and 80 m (15%). Most decodes (54%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

3,850

Messages attributed

UTC dates decoded

419

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 559 60m · 5 40m · 1,436 20m · 1,849 10m · 1

First attributed message: 2026-06-06
Last attributed message: 2026-09-11 22:17 UTC

Observed FT8 message patterns

Attributed sample: 3,850 messages
Active dates: 54 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -18 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 687, moderate (-15 to -9 dB) 1,292, strong (≥ -8 dB) 1,871.

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 F4MZI in decoded directed-looking exchanges:

DL1JEL · Fed. Rep. of Germany ×2 3A2MW · Monaco ×2 SV5BYP · Dodecanese ×2 9A9N · Croatia ×2 HI8J · Dominican Republic ×2 PC2J · Netherlands ×2 TN8GD · Republic of the Congo ×2 9A6NCC · Croatia ×2 IQ4JO · Italy ×2 IK2VFR/P · Italy ×2 EA1FCS · Spain ×2 I1WUA · Italy ×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 F4MZI

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: JO10 · 243 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,335 km (approx.)
Last such locator decoded: 2026-08-29 20:58 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	F4MZI S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-11 22:15	80m	- / -19	YL3NU	-20 / -	7	✓ Closing fragment
09-11 22:13	80m	- / -11	SP5EXA	+20 / -	10	✓ Closing fragment
09-11 22:11	80m	-19 / -3	EA1IOK	-20 / +6	4	✓ Full exchange observed
09-11 22:10	80m	- / -3	GX4RAF/P	-19 / -	2	Partial capture
09-11 22:07	80m	- / -	EA1IOK	-20 / -	4	Partial capture
09-11 22:06	80m	- / -12	EA5KT	-24 / -	2	✓ Closing fragment
09-10 19:11	40m	- / -11	5B4AMM	+9 / -	2	✓ Closing fragment
09-10 19:06	40m	-6 / -	K0DG	- / -11	2	Partial capture
09-10 15:52	40m	-13 / -	M0PEI	- / -6	7	✓ Closing fragment
09-10 15:47	40m	-14 / -	M7NJI	- / -15	7	✓ Closing fragment
09-10 15:41	40m	-10 / -	HB9GHJ	- / -	6	Partial capture
09-10 15:40	40m	-12 / -	F1HSY	- / -11	2	✓ Closing fragment
09-10 15:39	40m	-13 / -	M7EJN	- / -7	2	✓ Closing fragment
09-10 15:26	40m	-12 / -	IU8TIT	- / -25	8	Partial capture
09-10 15:06	40m	-15 / -	RZ6AKF	- / -4	8	Partial capture
09-10 15:05	40m	-9 / -6	9A6NCC	+1 / -6	4	✓ Full exchange observed
09-10 15:02	40m	-14 / -10	DB0IPA	+7 / -	3	✓ Closing observed
09-10 14:57	40m	-14 / -	MW7HZQ	- / +9	4	Partial capture
09-10 14:51	40m	-14 / -	SP5RT	- / -16	6	Partial capture
09-10 14:49	40m	-15 / -14	S55V	-8 / -	3	✓ Closing observed
09-10 14:44	40m	-14 / -18	YL3CW	-9 / -7	10	✓ Full exchange observed
09-10 14:41	40m	-14 / -	G8ILW	- / -10	2	Partial capture
09-10 14:39	40m	-16 / -	I2SIP	- / +10	2	✓ Closing fragment
09-10 14:32	40m	-15 / -	R4FFQ	- / -20	7	Partial capture
09-10 14:27	40m	-14 / -	R2ZCA	- / -19	4	Partial capture
09-10 14:19	40m	-17 / -	SP100PKP	- / -22	4	Partial capture
09-10 14:13	40m	-21 / -	SP9OJ	- / -13	3	Partial capture
09-10 14:04	40m	-17 / -	PD0NAH	- / -20	4	Partial capture
09-10 14:03	40m	-17 / -1	DD7EE	-8 / -	2	✓ Closing observed
09-10 13:58	40m	-14 / +7	IU5WQH	-22 / -2	5	✓ Full exchange observed
09-10 13:04	40m	- / -	DL3MIB	-4 / -	7	Partial capture
09-10 12:59	40m	- / -8	HA3IC	+6 / -	2	✓ Closing fragment
09-10 12:58	40m	- / -	DL3MIB	-1 / -	7	Partial capture
09-10 12:42	40m	- / -	DL3MIB	-8 / -	7	Partial capture
09-10 12:42	40m	- / -4	DM8BJF	+3 / -	2	✓ Closing fragment
09-10 12:26	40m	- / -11	R4CBF/P	+4 / -	2	Partial capture
09-10 12:23	40m	- / -16	9A170NT	-4 / -	5	Partial capture
09-10 12:18	40m	- / -	DL3MIB	+2 / -	7	Partial capture
09-10 11:54	40m	- / +1	DL3DUE	-8 / -	2	✓ Closing fragment
09-10 11:44	40m	- / +3	DM9YL	-8 / -	2	✓ Closing fragment
09-10 11:44	40m	- / -	DL3MIB	0 / -	7	Partial capture
09-10 11:24	40m	- / +9	DL1JEL	-1 / -	2	✓ Closing fragment
09-10 11:17	40m	- / 0	IV3VFP	-13 / -	2	✓ Closing fragment
09-10 11:03	40m	- / +5	DG4VN	-6 / -	2	✓ Closing fragment
09-10 10:41	40m	- / -18	DL8SBD	-18 / -	2	✓ Closing fragment
09-10 10:22	40m	- / +4	IZ4CCL	-6 / -	2	✓ Closing fragment
09-10 09:13	40m	- / -4	DG3AWF	-20 / -	2	✓ Closing fragment
09-10 08:31	40m	- / -10	DL1SO	0 / -	2	✓ Closing fragment
09-10 08:26	40m	- / -11	OE3ZIO	-12 / -	2	✓ Closing fragment
09-10 08:20	40m	- / -14	OE1HLB	-11 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
221515 +20 2602  F4MZI SP5EXA KO02
221545 -23 1725  F4MZI YL3NU KO27
221545 +21 2602  F4MZI SP5EXA KO02
221615 -22 1726  F4MZI YL3NU KO27
221615 +20 2602  F4MZI SP5EXA R-11 (x2)
221700 -16 2003  TF3VS F4MZI -02
221715 +19 2602  F4MZI SP5EXA R-11
221715 -18 1726  F4MZI YL3NU KO27
221745 +19 2602  F4MZI SP5EXA R-11
221745 -24 1726  F4MZI YL3NU KO27 (x2)
221815 +20 2602  F4MZI SP5EXA 73
221845 -21 1725  F4MZI YL3NU R-19 (x2)

40m

UTC    dB Audio  Message
155015 -14 1035  M7NJI F4MZI RR73
155215 -17 1034  SP9UOP F4MZI RR73
155245 -14 1035  M0PEI F4MZI -06 (x7)
155600 -10 2584  F4MZI DG6MA JN48
185915 -14 1139  K0DG F4MZI -11 (x3)
191100  +9 1986  F4MZI 5B4AMM R-11 (x2)

20m

UTC    dB Audio  Message
090800 -14  836  EA3FYO F4MZI -03 (x5)
091130 -10  836  RA2FGK F4MZI -06 (x6)
091430  -7  836  F4LQJ F4MZI -07 (x3)
113230  -7  836  II7MGFG F4MZI -06

60m

UTC    dB Audio  Message
223830  -7 1436  F4MZI DK5WL 73
224100  -9 1233  F4MZI F5RMK R-09 (x2)
201630 -13 1140  SP7AH F4MZI JO10 (x2)
201715  +9 1538  F4MZI SP7AH -03
201730 -14 1140  SP7AH F4MZI R-13
201745  +4 1538  F4MZI SP7AH RRR
201800 -14 1140  SP7AH F4MZI 73
203800 -14 2033  OK7PJ F4MZI +16
203945  +7 1961  F4MZI OK7PJ R-03 (x5)

10m

UTC    dB Audio  Message
103615  +4  721  F4MZI E70SZ JN84 (x3)
105445 -23 1668  F4MZI EA3ISZ R-13
110915  -9  719  F4MZI ON6YP JO10
110915  -8 2192  F4MZI S51PV/QRP R-03
111045  -8  719  F4MZI ON6YP JO10
112115 -19 1314  F4MZI IS0AAS JM49
112415  +3  719  F4MZI LZ2VQ KN23 (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.

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