F5NMJ — 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: JN23

Receiver-side FT8 activity involving F5NMJ, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-10-13 and 2026-10-14.

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 22 FT8 messages attributed to F5NMJ as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -14 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

40m · 22

First attributed message: 2026-10-13
Last attributed message: 2026-10-14 16:10 UTC

Observed FT8 message patterns

Attributed sample: 22 messages
Active dates: 2 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -18 to -9 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 2.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with F5NMJ in decoded directed-looking exchanges:

HA1BF · Hungary IN3ADG · Italy M7UKV · England OH6FYP · Finland UR5QW · Ukraine UX5UO · Ukraine

Most frequent locator attributed to F5NMJ

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: JN23 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,462 km (approx.)
Last such locator decoded: 2026-10-14 16:10 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	F5NMJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-15 10:55	40m	- / -20	DJ0MAB	-21 / -	2	Partial capture
10-14 16:10	40m	-18 / -	YL3CW	- / -	2	Partial capture
10-14 16:05	40m	- / -	PE1NPS	-2 / -	2	Partial capture
10-14 10:44	40m	- / -22	HA1BF	-10 / -	4	✓ Closing fragment
10-14 10:36	40m	- / -	S53AK	-5 / -	4	Partial capture
10-14 10:12	40m	- / -	IK2ZJR	-15 / -	2	Partial capture
10-13 23:26	40m	-16 / -	UA9QFF	- / -	4	Partial capture
10-13 23:16	40m	-16 / -13	M7UKV	-16 / -4	4	✓ Full exchange observed
10-13 23:11	40m	-12 / -	UA9QFF	- / -	4	Partial capture
10-13 23:08	40m	-11 / -	SV3AUW	- / -	3	Partial capture
10-13 23:04	40m	-12 / -	OH6FYP	- / -6	5	✓ Closing fragment
10-13 22:59	40m	- / -	EA1IOK	-11 / -	4	Partial capture
10-11 23:31	40m	- / -	UR9QQ	-1 / -	3	Partial capture
10-11 23:28	40m	- / -12	UX5UO	-10 / -	6	✓ Closing fragment
10-11 23:23	40m	- / -15	F4MXT/P	-14 / -	2	Partial capture
09-28 08:36	40m	- / -18	F1PBZ	-15 / -	3	Partial capture
09-28 08:30	40m	- / -13	IN3ADG	-13 / -	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
103645  -2 1013  F5NMJ S53AK JN76 (x3)
104430 -15 1226  F5NMJ HA1BF -22 (x4)
160345 +12 2152  F5NMJ HA7TM JN97
160515  -3 2557  F5NMJ PE1NPS JO22 (x2)
161000 -19 2152  YL3CW F5NMJ JN23 (x2)
163500 -11  605  F5NMJ ON5ACO -02
105530 -20 1457  F5NMJ DJ0MAB -20 (x2)

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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