W4SEM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States

Receiver-side FT8 activity involving W4SEM, decoded by SO8OO in southeastern Poland. 29 indexed activity records, involving 40m, 20m. Heard between 2026-06-04 and 2026-08-20.

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.

Overview

29
Indexed activity rows
0
CQ messages
10
Indexed UTC dates
-
Directional S/N pending

Bands

40m 20m
First indexed activity: 2026-06-04
Last indexed activity: 2026-08-20 21:33 UTC

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with W4SEM in decoded directed-looking exchanges:

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 UTCBandW4SEM S/NCounterpartCounterpart S/NMsgsCapture
08-20 23:33 20m - / -14 OK2CNI -10 / - 2 ✓ Closing fragment
08-16 22:47 20m - / -15 HB9TIH -14 / - 2 Partial capture
08-14 22:34 20m - / -15 SV5BYP -20 / - 2 ✓ Closing fragment
07-19 23:53 20m - / -12 4Z5PG -2 / - 4 ✓ Closing fragment
07-09 03:52 40m - / -18 5P1KZX -4 / - 2 Partial capture
07-09 03:30 40m - / -6 EA7LIC -18 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
112530  -6  789  W4SEM GJ0KYZ RR73
003245 -13  982  W4SEM PD1AC -16
235300  +2 2713  W4SEM 4Z5PG -12 (x4)
012800 -22 1485  W4SEM A71UN -14
223445 -17 1879  W4SEM SV5BYP -15 (x2)
224700 -15 1431  W4SEM HB9TIH JN36 (x2)
233300 -11 2419  W4SEM OK2CNI -14 (x2)
40m 
UTC    dB Audio  Message
033045 -18 1760  W4SEM EA7LIC -06 (x2)
034945  -7 2826  W4SEM 5P1KZX -18 (x3)

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