KX4I — 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: EM63

Receiver-side FT8 activity involving KX4I, decoded by SO8OO in southeastern Poland. 43 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-11-06.

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 43 FT8 messages attributed to KX4I as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (98%), followed by 20 m (2%). 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 -14 dB.

Overview

43
Messages attributed
8
UTC dates decoded
9
Active 15-min windows
-14 dB
Estimated median S/N

Bands

80m · 42 20m · 1
First attributed message: 2026-08-25
Last attributed message: 2026-11-06 03:18 UTC

Observed FT8 message patterns

Attributed sample
43 messages
Active dates
8 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-24 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 12.

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 KX4I 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 KX4I

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
EM63 · 3 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,401 km (approx.)
Last such locator decoded
2026-10-21 05:04 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 UTCBandKX4I S/NCounterpartCounterpart S/NMsgsCapture
11-06 03:18 80m - / - UA4FKT +3 / - 2 Partial capture
11-06 03:18 80m -20 / - KC4RNF - / +3 2 ✓ Closing fragment
11-03 05:25 40m - / -9 HB9IRO -1 / - 3 Partial capture
10-23 06:49 80m - / - OZ1GYO -16 / - 2 Partial capture
10-23 06:49 80m - / - SP9EO +10 / - 2 Partial capture
10-23 06:49 80m - / - DL1MEV -12 / - 4 Partial capture
10-21 05:24 80m -18 / -11 9A3TGT +2 / - 3 ✓ Closing observed
10-21 05:22 80m - / - SP7ENW -8 / - 3 Partial capture
10-21 05:21 80m - / -15 YO7CFD +11 / - 5 Partial capture
10-21 05:20 80m -18 / -19 SP2QCW +3 / -19 7 ✓ Full exchange observed
10-21 05:18 80m -13 / -6 DL3OCF -1 / - 4 ✓ Closing observed
10-21 05:17 80m -14 / - DO1SJF +4 / -11 4 ✓ Closing observed
10-21 05:16 80m -8 / -3 F4EGM +2 / -14 4 ✓ Full exchange observed
10-21 05:16 80m -10 / -10 OK1FCR +24 / -12 6 ✓ Full exchange observed
10-21 05:15 80m - / - PA3KUS -8 / - 2 Partial capture
10-21 05:14 80m -7 / -8 OH2CLX 0 / - 6 ✓ Closing observed
10-21 05:13 80m - / - PA0MUS -7 / - 8 Partial capture
10-21 05:12 80m - / -11 9A60CBM +3 / - 6 ✓ Closing fragment
10-21 05:12 80m -13 / -5 F4FSY -1 / -13 4 Partial capture
10-21 05:11 80m - / -8 DL3OCF +5 / - 7 Partial capture
10-21 05:10 80m -16 / -3 DO1ID +4 / -16 6 ✓ Full exchange observed
10-21 05:08 80m -8 / -4 DL1VVQ -1 / - 5 ✓ Closing observed
10-21 05:08 80m - / - M0PNN -10 / - 4 Partial capture
10-21 05:08 80m -7 / -11 OM2GM 0 / -18 5 ✓ Full exchange observed
10-21 05:07 80m - / - DO9YU -18 / - 3 Partial capture
10-21 05:07 80m - / - F4EGM -2 / - 5 Partial capture
10-21 05:07 80m - / - PA3KUS -14 / - 6 Partial capture
10-21 05:06 80m - / - IK3VZO -8 / - 2 Partial capture
10-21 05:06 80m -11 / -10 IK4DCW 0 / -16 11 ✓ Full exchange observed
10-21 05:06 80m -9 / - CT2GQA - / -10 4 ✓ Closing fragment
10-21 05:06 80m - / -5 DL3OCF +6 / - 4 Partial capture
10-21 05:05 80m - / - DA6DN -1 / - 3 Partial capture
10-21 05:05 80m - / -4 DL1VVQ -2 / - 2 Partial capture
10-21 05:05 80m -6 / -5 DF0KK 0 / -17 5 ✓ Full exchange observed
10-21 05:05 80m -5 / - DL1MEV -5 / -18 6 Partial capture
10-16 04:59 80m - / -14 YU0U +7 / - 5 ✓ Closing fragment
10-16 04:54 80m - / - SP3T -9 / - 3 Partial capture
10-07 04:54 80m - / -12 AO5CV -17 / - 3 ✓ Closing fragment
10-07 04:53 80m - / - DO7TTR -9 / - 3 Partial capture
10-07 04:50 80m - / -15 HA7XL +15 / - 3 ✓ Closing fragment
10-07 04:49 80m - / -17 DO1ID +4 / - 5 Partial capture
10-07 04:49 80m - / -13 LY5A +4 / - 2 ✓ Closing fragment
10-06 05:17 40m - / - IU1WYC -4 / - 2 Partial capture
10-06 05:13 80m - / -12 DL3OCF +9 / - 3 Partial capture
10-06 05:13 80m - / - F5RAV -7 / - 3 Partial capture
10-06 05:13 80m - / - PA3KUS -6 / - 2 Partial capture
10-06 05:13 80m -22 / -5 F5RMK -5 / - 3 ✓ Closing observed
10-06 05:12 80m -16 / -15 SV2JAO -10 / -20 3 ✓ Full exchange observed
10-06 05:11 80m - / - SP9AU -3 / - 2 Partial capture
10-03 05:30 80m - / -8 DG0OBU -5 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
064900  -8 2357  KX4I DL1MEV JN58
064930 +11 1729  KX4I SP9EO JN99
064930 -15 2153  KX4I OZ1GYO JO65
064930 -10 2356  KX4I DL1MEV JN58
065000 +10 1729  KX4I SP9EO JN99
065000 -18 2154  KX4I OZ1GYO JO65
065000 -19 2358  KX4I DL1MEV JN58 (x2)
053030 -15  615  KX4I 6W/IK2HKT -14
053100  -6  615  KX4I RR73; KB8CR <...> -14
031800 -15 1013  KC4RNF KX4I +03 (x2)
031845  +3 1013  KX4I UA4FKT LO23 (x2)
032045 -24  940  KX4I PA3KUS JO21
40m 
UTC    dB Audio  Message
055200  -2 2000  KX4I G5TV IO93
051715  -4 2512  KX4I IU1WYC JN44
051745  +4 1086  KX4I LZ3BS KN22
051745  -4 2512  KX4I IU1WYC JN44
052515  -5 1355  KX4I HB9IRO -09 (x3)
20m 
UTC    dB Audio  Message
044145 -17 2506  F1DXP KX4I EM63
044330 -12 2792  KX4I F1DXP -02 (x3)

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee