7M4CLF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan Most frequent locator attributed to this token: PM95

Receiver-side FT8 activity involving 7M4CLF, decoded by SO8OO in southeastern Poland. 62 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-16.

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 62 FT8 messages attributed to 7M4CLF as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -1 dB; no usual signal pattern is inferred.

Overview

62
Messages attributed
1
UTC dates decoded
4
Active 15-min windows
-1 dB
Estimated median S/N

Bands

20m · 62
First attributed message: 2026-06-16
Last attributed message: 2026-06-16 18:36 UTC

Observed FT8 message patterns

Attributed sample
62 messages
Active dates
1 UTC dates
Estimated median S/N
-1 dB
Estimated 10th-90th percentile
-3 to +2 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 62.

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 7M4CLF in decoded directed-looking exchanges:

Most frequent locator attributed to 7M4CLF

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
PM95 · 9 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,693 km (approx.)
Last such locator decoded
2026-06-16 18:36 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 UTCBand7M4CLF S/NCounterpartCounterpart S/NMsgsCapture
08-05 19:24 20m - / -11 CR7BRV 0 / - 2 ✓ Closing fragment
08-05 19:14 20m - / -13 F4LZZ -14 / - 3 Partial capture
08-05 19:14 20m - / -13 PD1ADA -18 / - 2 Partial capture
08-05 19:11 20m - / - F4LZZ -6 / - 2 Partial capture
06-30 16:24 20m - / - IK2ZJR +2 / - 2 ✓ Closing fragment
06-30 16:23 20m - / - R3YK -10 / - 3 Partial capture
06-30 16:13 20m - / -9 4L1FL -6 / - 2 Partial capture
06-30 16:13 20m - / -16 E77FN -2 / - 2 Partial capture
06-30 16:12 20m - / 0 R3KCW -4 / - 3 ✓ Closing fragment
06-30 16:12 20m - / -13 RX3VF -8 / - 6 ✓ Closing fragment
06-30 16:09 20m - / -3 R7DX -13 / - 3 Partial capture
06-30 15:51 20m - / -4 R4AGO -14 / - 5 Partial capture
06-30 15:48 20m - / -12 F5URG -3 / - 7 Partial capture
06-30 15:45 20m - / -17 IZ8EYN -7 / - 3 Partial capture
06-27 03:17 40m - / - UA3WG -8 / - 3 Partial capture
06-26 19:56 20m - / - IZ5BLN -13 / - 2 Partial capture
06-26 19:54 20m - / -2 F5PGA +10 / - 2 Partial capture
06-26 19:39 20m - / - RM3TO 0 / - 2 Partial capture
06-26 19:39 20m - / - F5PGA +1 / - 4 Partial capture
06-26 18:54 80m - / -17 RV9FF -2 / - 6 ✓ Closing fragment
06-26 18:51 80m - / -14 RX6DA +7 / - 2 ✓ Closing fragment
06-26 18:46 80m - / -14 R6FS +16 / - 2 ✓ Closing fragment
06-26 18:34 80m - / -16 RW9WJ -9 / - 4 ✓ Closing fragment
06-26 17:43 20m - / - 9A5TW +10 / - 4 Partial capture
06-24 19:22 80m - / -11 R7CD +4 / - 2 ✓ Closing fragment
06-24 19:18 80m - / -14 R9SAP -12 / - 2 ✓ Closing fragment
06-24 18:38 20m - / - OE9GWV +6 / - 3 Partial capture
06-24 18:37 20m - / -5 IZ2SXZ -16 / - 2 Partial capture
06-24 18:20 40m - / -24 DK7ZT -16 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
173430 -17 2146  7M4CLF SV2AEL R-16
191430 -12 1563  7M4CLF JY5CG -20
144230 -16 1576  7M4CLF A71DA RR73
191115  -6 2585  7M4CLF F4LZZ JN09
191145 -15 2033  7M4CLF PD1ADA JO21
191145  -5 2585  7M4CLF F4LZZ JN09
191415 -20 2033  7M4CLF PD1ADA JO21
191415 -15 2325  7M4CLF F4LZZ R-13
191445 -16 2033  7M4CLF PD1ADA R-13
191445 -14 2325  7M4CLF F4LZZ R-13 (x2)
191615 -10 2650  7M4CLF 4X1ZQ 73
192415  +1  524  7M4CLF CR7BRV -11 (x2)
154930  -4  452  7M4CLF <...> +03
40m 
UTC    dB Audio  Message
181815 -22 1636  7M4CLF R4HIV R-07
182015 -14 1904  7M4CLF DK7ZT -24 (x2)
031700 -10 2160  7M4CLF UA3WG KO71 (x3)
80m 
UTC    dB Audio  Message
192245  +5 1285  7M4CLF R7CD RR73
183445 -10 1410  7M4CLF RW9WJ LO84 (x4)
184630 +17 2703  7M4CLF R6FS -14 (x2)
185130  +9 1734  7M4CLF RX6DA -14 (x2)
185430  -1  937  7M4CLF RV9FF LO87 (x6)

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