LU5MM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Argentina Most frequent locator attributed to this token: FF56

Receiver-side FT8 activity involving LU5MM, decoded by SO8OO in southeastern Poland. 33 FT8 messages attributed to this token as transmitter, on 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-24.

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 33 FT8 messages attributed to LU5MM as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (100%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

20m · 33

First attributed message: 2026-06-07
Last attributed message: 2026-08-24 22:07 UTC

Observed FT8 message patterns

Attributed sample: 33 messages
Active dates: 7 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -19 to -12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 0.

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 LU5MM in decoded directed-looking exchanges:

C31KC · Andorra CT3MD · Madeira Islands DK8HC · Fed. Rep. of Germany EA6TU · Balearic Islands HL2MXR · Republic of Korea PA5VL · Netherlands SM3ULU · Sweden SV5BYP · Dodecanese UA6CE · European Russia 3Z6I · Poland EA7ALL · Spain RA9LT · Asiatic Russia

Most frequent locator attributed to LU5MM

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: FF56 · 14 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 12,838 km (approx.)
Last such locator decoded: 2026-08-22 20:12 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	LU5MM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-05 00:42	40m	- / -21	RX9WN	-1 / -	4	Partial capture
09-05 00:41	40m	- / -14	RA9LT	-5 / -	4	✓ Closing fragment
08-28 19:10	10m	- / -	OZ1BUR	-1 / -	4	Partial capture
08-24 22:08	20m	- / -	IU0PHS	-18 / -	4	Partial capture
08-24 22:08	20m	- / -	M0LAD	-17 / -	2	Partial capture
08-24 22:07	20m	-12 / -	HL2MXR	- / -14	2	✓ Closing fragment
08-24 22:02	20m	- / -	IU0PHS	-14 / -	4	Partial capture
08-22 20:26	20m	- / -	DL1R	+4 / -	2	Partial capture
08-22 20:13	20m	- / -	ON8BB	-6 / -	2	Partial capture
08-22 01:19	20m	-14 / -14	CT3MD	+3 / -25	7	✓ Full exchange observed
08-22 01:14	20m	-14 / -	CT3MD	- / -	2	Partial capture
08-14 22:56	20m	- / -15	SV5BYP	-20 / -	6	✓ Closing fragment
08-07 00:06	20m	- / -	9A4ZM	-6 / -	3	Partial capture
08-01 22:18	20m	-14 / -	EA6TU	-24 / -19	3	✓ Closing observed
07-30 17:47	10m	- / -	DL1TS	-4 / -	9	Partial capture
07-21 23:29	40m	- / -14	EA7ALL	-12 / -	3	✓ Closing fragment
07-05 22:47	20m	- / -11	YO4NF	-10 / -	2	Partial capture
06-30 00:10	40m	- / -13	3Z6I	+8 / -	2	Partial capture
06-24 22:42	20m	- / -12	C31KC	-14 / -	4	✓ Closing fragment
06-24 22:40	20m	- / -	IU5HIU	-4 / -	2	Partial capture
06-24 22:14	20m	-16 / -	UA6CE	-20 / -	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
001030 +10 2729  LU5MM 3Z6I -13 (x3)
232930 -12 2446  LU5MM EA7ALL IM88 (x3)
004145  -8 2324  LU5MM RA9LT MO27 (x2)
004245  -1 2386  LU5MM RX9WN -21
004245  -3 2324  LU5MM RA9LT R-14
004315  -1 2386  LU5MM RX9WN -21
004315  -5 2324  LU5MM RA9LT 73
004345  +0 2386  LU5MM RX9WN -21 (x2)

10m

UTC    dB Audio  Message
201330  -6 2590  LU5MM ZA/KN7L -04
174715  -8  565  LU5MM DL1TS JN58 (x2)
174815 -14 2365  LU5MM DN9OPA JN38
174815  -6  565  LU5MM DL1TS JN58 (x7)
191045  -2 2424  LU5MM OZ1BUR JO46 (x4)

20m

UTC    dB Audio  Message
202930  +3  562  LU5MM R7CA -10
220200  +7 2296  LU5MM DF4WC JN49
220230 -11 1917  LU5MM IU0PHS JN61 (x4)
220600 -23 2073  LU5MM DM8ET -15
220715 -13 2289  HL2MXR LU5MM -14 (x2)
220830 -17 2287  LU5MM M0LAD JO02
220830 -19 1917  LU5MM IU0PHS JN61
220900 -17 2287  LU5MM M0LAD JO02
220900 -13 1917  LU5MM IU0PHS JN61 (x3)

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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