US4LC — 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: Ukraine Most frequent locator attributed to this token: KO80

Receiver-side FT8 activity involving US4LC, decoded by SO8OO in southeastern Poland. 54 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-26 and 2026-10-07.

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 54 FT8 messages attributed to US4LC as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (93%), followed by 10 m (7%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (81%); the estimated median was -5 dB.

Overview

54
Messages attributed
6
UTC dates decoded
10
Active 15-min windows
-5 dB
Estimated median S/N

Bands

40m · 50 10m · 4
First attributed message: 2026-06-26
Last attributed message: 2026-10-07 04:20 UTC

Observed FT8 message patterns

Attributed sample
54 messages
Active dates
6 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-11 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 44.

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 US4LC 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 US4LC

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
KO80 · 32 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,082 km (approx.)
Last such locator decoded
2026-10-07 04:19 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 UTCBandUS4LC S/NCounterpartCounterpart S/NMsgsCapture
10-07 04:19 40m -6 / - ES1BH - / -23 4 ✓ Closing fragment
10-07 04:04 40m +1 / - DJ9BX - / +1 3 ✓ Closing fragment
10-06 19:55 40m - / -8 HA7TM +7 / - 2 ✓ Closing fragment
10-03 05:41 40m - / -12 UX2QX +5 / - 3 ✓ Closing fragment
10-03 05:38 40m - / -6 HA1BF +2 / - 2 ✓ Closing fragment
10-03 05:28 40m - / -21 ES2AJ +13 / - 4 Partial capture
09-19 04:30 40m -6 / - UY0HY - / - 2 Partial capture
09-19 04:25 40m - / -9 UT5MB +3 / - 3 ✓ Closing fragment
09-19 04:23 40m - / -14 YL2KF -9 / - 3 ✓ Closing fragment
09-16 04:11 40m -6 / - SP9CLQ - / - 2 Partial capture
09-16 03:58 40m -10 / -11 4L1FL 0 / -2 7 ✓ Full exchange observed
09-10 04:25 40m -3 / - UT2PC - / -7 3 ✓ Closing fragment
09-10 04:13 40m -2 / - UT7UJ -10 / -13 4 ✓ Closing observed
09-10 04:09 40m +1 / -11 LA8ENA -15 / -24 13 ✓ Full exchange observed
09-10 04:07 40m +3 / -10 YO4GIY -7 / -19 5 ✓ Full exchange observed
09-10 04:04 40m -2 / - UT7UJ - / - 3 Partial capture
09-10 04:01 40m -5 / -8 SV2KD -11 / - 3 Partial capture
09-10 03:58 40m -4 / - UT5EL - / - 3 Partial capture
09-10 03:53 40m -2 / - YO6BHN - / -8 3 ✓ Closing fragment
09-10 02:38 40m - / -3 RC9WC -18 / - 2 ✓ Closing fragment
08-13 06:30 10m - / -9 SV2CLJ -2 / - 2 ✓ Closing fragment
08-04 14:11 20m - / - DH2RL -16 / - 2 Partial capture
08-04 14:05 20m - / - DH2RL -12 / - 2 Partial capture
08-03 21:30 40m -14 / - XV9B - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
054200  +4  805  US4LC UX2QX 73
054900  -2  920  US4LC OZ6G RR73
185445 -16 2005  US4LC OM3TWM RR73
195545  +9 1003  US4LC HA7TM -08 (x2)
040430  -4  656  DJ9BX US4LC KO80 (x3)
041200  -8  986  CQ US4LC KO80 (x2)
041300 -11  986  UA9SY US4LC -17
041900  -6  629  ES1BH US4LC KO80 (x4)
10m 
UTC    dB Audio  Message
063030  +0  681  US4LC SV2CLJ -09 (x2)
20m 
UTC    dB Audio  Message
114945 -17 2417  US4LC IZ4JMA -21
140530  -9 1371  US4LC DH2RL JN68 (x4)

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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