W4KCM — 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: United States Most frequent locator attributed to this token: EM95

Receiver-side FT8 activity involving W4KCM, decoded by SO8OO in southeastern Poland. 135 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-11-05.

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 135 FT8 messages attributed to W4KCM as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (64%), followed by 40 m (30%) and 20 m (6%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

135
Messages attributed
22
UTC dates decoded
32
Active 15-min windows
-16 dB
Estimated median S/N

Bands

80m · 87 40m · 40 20m · 8
First attributed message: 2026-06-10
Last attributed message: 2026-11-05 03:14 UTC

Observed FT8 message patterns

Attributed sample
135 messages
Active dates
22 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-24 to -9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 69, moderate (-15 to -9 dB) 55, strong (≥ -8 dB) 11.

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 W4KCM in decoded directed-looking exchanges:

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to W4KCM

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
EM95 · 50 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,876 km (approx.)
Last such locator decoded
2026-11-05 03:13 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 UTCBandW4KCM S/NCounterpartCounterpart S/NMsgsCapture
11-05 03:13 80m -16 / - K4GFX - / - 2 ✓ Closing fragment
11-05 03:12 80m - / - DL9KM -6 / - 5 Partial capture
11-05 03:12 80m - / - SP7ENW -2 / - 2 Partial capture
11-05 03:11 80m -10 / - W4MAA - / -10 3 ✓ Closing fragment
11-05 03:08 80m - / - F5MXH +6 / - 3 Partial capture
11-05 03:07 80m -18 / - N3FMC - / -17 2 ✓ Closing fragment
11-05 03:05 80m -11 / - AC2FA - / -13 4 ✓ Closing fragment
11-05 03:05 80m - / - EA4D -18 / - 6 Partial capture
11-05 03:04 80m - / -15 OK1HEH +7 / - 2 Partial capture
11-05 03:03 80m -15 / - K8DTF - / -12 3 Partial capture
11-05 03:03 80m - / - RA2FCF -2 / - 2 Partial capture
11-05 03:02 80m - / - F4EGM 0 / - 2 Partial capture
11-05 03:02 80m - / -12 GB1RBL -22 / - 2 Partial capture
11-05 03:01 80m - / - G0AZH -18 / - 5 Partial capture
11-05 03:01 80m -16 / - KW8CW - / -8 3 ✓ Closing fragment
11-05 03:01 80m - / - ON4MAP -20 / - 4 Partial capture
11-05 03:00 80m - / - IU2THY +10 / - 3 Partial capture
10-31 03:14 80m - / - PA3KUS -5 / - 6 Partial capture
10-31 02:32 80m - / - PA3KUS -6 / - 5 Partial capture
10-21 03:23 40m - / - IU8RFW -12 / - 2 Partial capture
10-16 02:27 40m - / - EA3DNC -12 / - 4 Partial capture
10-16 02:27 40m - / - SV5AZK -23 / - 3 Partial capture
09-25 02:40 80m - / +6 VA3MO -18 / - 4 Partial capture
09-25 02:40 80m - / -16 DO1ID +4 / - 3 Partial capture
09-25 02:40 80m - / - EA5TE 0 / - 2 Partial capture
09-25 02:38 80m -9 / - W4WHQ -19 / +4 4 ✓ Closing observed
09-25 02:38 80m - / - IN3WZS +6 / - 20 Partial capture
09-25 02:37 80m -11 / - N0BUZ - / -13 2 ✓ Closing fragment
09-25 02:37 80m - / -14 DO1ID +4 / - 2 Partial capture
09-18 02:29 80m - / - SM5DIC +5 / - 5 Partial capture
09-17 02:29 40m -23 / - VE6DDD - / - 4 Partial capture
09-16 02:06 40m -13 / - K5CT - / -10 4 Partial capture
09-13 03:44 80m - / -10 ON1JP -16 / - 4 Partial capture
09-13 03:42 80m - / - PA3KUS -2 / - 5 Partial capture
09-13 03:25 40m -18 / - W6K - / -22 6 Partial capture
09-13 03:19 40m - / -17 RK6OZ 0 / - 3 Partial capture
09-13 03:18 40m -8 / 0 D44TWO -2 / -13 6 ✓ Full exchange observed
09-10 01:42 40m -7 / - WB2DRS - / -20 4 ✓ Closing fragment
09-10 01:40 40m -11 / - KE9END - / -13 3 ✓ Closing fragment
09-05 02:38 80m - / - F5PBG +1 / - 4 Partial capture
08-31 04:08 80m - / -16 DO1ID 0 / - 3 Partial capture
08-31 04:07 80m -14 / - J88IH - / -22 4 Partial capture
08-31 04:03 80m - / - F5MXH -16 / - 3 Partial capture
08-31 04:03 80m - / - IK5CHL -5 / - 3 Partial capture
08-31 03:47 80m - / - IK5CHL -4 / - 3 Partial capture
08-31 03:46 80m - / - LZ2VQ -9 / - 3 Partial capture
08-31 02:52 80m -16 / - J88IH - / -22 2 Partial capture
08-31 02:41 80m - / -6 ON3ANY +2 / - 4 Partial capture
08-31 02:39 80m - / - DO1NAE -8 / - 9 Partial capture
08-31 02:38 80m -16 / - KY4WI - / +2 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
030900  +7  692  W4KCM F5MXH JN07 (x2)
030945 -11  692  K8DTF W4KCM RR73
031115  -8  757  W4MAA W4KCM EM95 (x2)
031200  -4 2200  W4KCM SP7ENW JO91
031215 -10  757  W4MAA W4KCM 73
031230  -1 2200  W4KCM SP7ENW JO91
031230 -11 1751  W4KCM DL9KM JN68 (x2)
031330 -16  757  K4GFX W4KCM EM95
031330  -4 1751  W4KCM DL9KM JN68 (x2)
031430 -15  757  K4GFX W4KCM 73
031430  -4 1751  W4KCM DL9KM JN68
40m 
UTC    dB Audio  Message
022930 -24 1642  VE6DDD W4KCM EM95 (x3)
025500 -18 1867  W4KCM C5R RR73
022700 -21 1735  W4KCM SV5AZK KM46 (x2)
022730 -16  863  W4KCM EA3DNC JN01
022800 -24 1736  W4KCM SV5AZK KM46
022800 -15  864  W4KCM EA3DNC JN01 (x3)
032300 -18 1166  XE2SSB W4KCM 73
032315 -14 1794  W4KCM IU8RFW JN70 (x2)
030245  -5  748  W4KCM MM7SXM RR73
20m 
UTC    dB Audio  Message
021345  -3  572  8Q7PR W4KCM EM95 (x4)
021545 -10  777  RU6UR W4KCM EM95 (x4)
051645 +20  776  W4KCM RC6OG KN98 (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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