W4KAM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM85

Receiver-side FT8 activity involving W4KAM, decoded by SO8OO in southeastern Poland. 23 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-24 and 2026-08-26.

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 23 FT8 messages attributed to W4KAM 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 (78%), followed by 20 m (22%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.

Overview

23
Messages attributed
2
UTC dates decoded
4
Active 15-min windows
-15 dB
Estimated median S/N

Bands

40m · 18 20m · 5
First attributed message: 2026-08-24
Last attributed message: 2026-08-26 00:14 UTC

Observed FT8 message patterns

Attributed sample
23 messages
Active dates
2 UTC dates
Estimated median S/N
-15 dB
Estimated 10th-90th percentile
-17 to -10 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 1.

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 W4KAM in decoded directed-looking exchanges:

Most frequent locator attributed to W4KAM

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
EM85 · 10 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,995 km (approx.)
Last such locator decoded
2026-08-26 00:12 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 UTCBandW4KAM S/NCounterpartCounterpart S/NMsgsCapture
08-26 00:12 20m -11 / - UT2PC - / -4 3 ✓ Closing fragment
08-24 03:43 40m -15 / - TN8GD - / - 2 Partial capture
08-24 03:43 40m -16 / -22 US0QV 0 / -17 6 ✓ Full exchange observed
08-24 03:42 40m -16 / -7 DL3OCF -8 / -14 4 ✓ Full exchange observed
08-24 03:39 40m -15 / -12 TA2FE +1 / - 6 ✓ Closing observed
08-24 03:34 40m -18 / -19 F8TRT +3 / -18 8 ✓ Full exchange observed
08-24 03:33 40m - / - DL9KM -8 / - 2 Partial capture
08-24 03:17 40m -16 / - RA2FCF - / -11 2 Partial capture
08-24 03:13 40m - / -9 F5MNW +3 / - 4 ✓ Closing fragment
08-24 03:12 40m - / -20 YO4GIY -10 / - 4 ✓ Closing fragment
08-24 03:03 40m - / -20 G4RYE -9 / - 5 Partial capture
08-24 02:58 40m - / - G4RYE -7 / - 4 Partial capture
08-24 02:57 40m - / - S52UF -12 / - 2 Partial capture
08-24 02:56 40m - / -23 UA6BGM +2 / - 4 ✓ Closing fragment
08-24 02:55 40m - / -6 OZ1KZX -22 / - 2 ✓ Closing fragment
08-24 02:52 40m - / - EB1LA -2 / - 3 Partial capture
08-24 02:51 40m - / - IZ8DBJ -3 / - 3 Partial capture
08-24 02:49 40m - / -17 UT5ECZ -1 / - 2 ✓ Closing fragment
08-24 02:49 40m - / - F4BYA +2 / - 4 Partial capture
08-24 02:42 40m - / -14 RZ6L -5 / - 2 ✓ Closing fragment
08-21 04:30 40m - / -8 EA1RFF -4 / - 2 ✓ Closing fragment
08-21 04:29 40m - / -18 YO6LM 0 / - 2 Partial capture
06-30 01:34 40m - / -4 II0WWA -20 / - 2 Partial capture
06-30 01:30 40m - / -12 YO9IAB -9 / - 3 ✓ Closing fragment
06-30 01:17 40m - / - YO9IAB -10 / - 2 Partial capture
06-30 00:52 40m - / -9 EG4WWA -21 / - 2 Partial capture
06-25 01:52 40m - / - 9A2KO -13 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
001115  -7  959  AJ7GF W4KAM EM85
001200 -10  959  UT2PC W4KAM EM85 (x3)
001400 -13  959  VA3MBT W4KAM R-04
40m 
UTC    dB Audio  Message
034100  -1 1433  W4KAM TA2FE RR73 (x2)
034145 -15 2178  TA2FE W4KAM 73
034200  -8  372  W4KAM DL3OCF -07
034215 -17 2178  DL3OCF W4KAM R-14
034230  -8  372  W4KAM DL3OCF RR73
034245 -15 2178  DL3OCF W4KAM 73
034300  -1 2178  W4KAM US0QV KN77
034315 -15 2178  TN8GD W4KAM EM85
034330  -1 2178  W4KAM US0QV KN77
034345 -15 2178  US0QV W4KAM -17
034400  +1 2176  W4KAM US0QV R-22
034415 -16 2178  US0QV W4KAM RR73
034430  -1 2177  W4KAM US0QV 73
034515 -15 2178  TN8GD W4KAM EM85

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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