KO4PRE — 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: FM18

Receiver-side FT8 activity involving KO4PRE, decoded by SO8OO in southeastern Poland. 909 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 58 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-31.

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 909 FT8 messages attributed to KO4PRE as the transmitting token by decoded message structure across 58 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (66%), followed by 40 m (20%) and 160 m (14%). Most decodes (100%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

909
Messages attributed
58
UTC dates decoded
178
Active 15-min windows
-13 dB
Estimated median S/N

Bands

160m · 129 80m · 601 40m · 179
First attributed message: 2026-06-08
Last attributed message: 2026-10-31 04:52 UTC

Observed FT8 message patterns

Attributed sample
909 messages
Active dates
58 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-22 to -4.9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 315, moderate (-15 to -9 dB) 366, strong (≥ -8 dB) 228.

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 KO4PRE 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 KO4PRE

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
FM18 · 511 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,390 km (approx.)
Last such locator decoded
2026-10-31 04:52 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 UTCBandKO4PRE S/NCounterpartCounterpart S/NMsgsCapture
11-05 04:51 160m - / -20 OM2DX +20 / - 2 ✓ Closing fragment
11-05 03:59 160m - / -9 5B4AMX -14 / - 2 ✓ Closing fragment
11-03 05:15 160m - / -20 F5GN -6 / - 4 ✓ Closing fragment
11-03 05:13 160m - / -11 SP9JZU +10 / - 4 ✓ Closing fragment
11-03 05:11 160m - / -14 4O7CC +7 / - 2 ✓ Closing fragment
11-02 04:01 160m - / -15 YU1EU +4 / - 2 Partial capture
11-02 02:59 160m - / -17 6W/IK2HKT -10 / - 2 Partial capture
11-01 03:50 80m - / -7 IK4TVP +9 / - 2 Partial capture
10-31 04:51 80m -15 / - UA9JTJ/4 - / - 3 Partial capture
10-28 03:37 80m - / - OM2WQ +21 / - 3 Partial capture
10-28 03:37 80m - / - R2WAF +8 / - 2 Partial capture
10-28 03:32 80m - / - R3RB -5 / - 8 Partial capture
10-28 03:28 80m -2 / -8 TC1TR +3 / -10 18 ✓ Full exchange observed
10-28 03:08 80m -9 / - W7DGM - / - 3 Partial capture
10-25 01:33 160m - / -15 F5UKW +8 / - 2 ✓ Closing fragment
10-24 03:09 80m - / - HB9BWE +8 / - 3 Partial capture
10-23 02:54 80m - / -18 RA4FP +1 / - 2 Partial capture
10-23 02:52 80m 0 / - R2EC - / - 4 Partial capture
10-21 03:24 80m - / -10 OK1HEH +4 / - 4 Partial capture
10-21 03:23 80m - / -12 IK4TVP +4 / - 4 Partial capture
10-21 03:21 80m - / -13 UR5SG +14 / - 2 Partial capture
10-21 03:21 80m - / - SP6NIV +4 / - 6 Partial capture
10-21 03:20 80m -5 / - EC6DX -5 / -14 7 ✓ Closing observed
10-21 02:51 160m - / -16 IK5UIM -1 / - 4 ✓ Closing fragment
10-21 02:50 160m - / - SV1EKI -11 / - 3 Partial capture
10-21 02:44 160m - / -24 HB0WR -8 / - 2 Partial capture
10-21 01:59 80m - / - DO7BE -2 / - 3 Partial capture
10-21 01:59 80m -6 / -14 TA4SSK -12 / -21 10 ✓ Full exchange observed
10-21 01:51 160m -20 / - 9H1ES - / - 3 Partial capture
10-18 04:07 80m - / 0 F4CTJ +6 / - 2 Partial capture
10-11 02:05 160m - / -20 HA7TM +20 / - 2 ✓ Closing fragment
10-07 03:35 160m - / -12 M5RJR +2 / - 12 ✓ Closing fragment
10-06 04:53 160m - / - DK5WL -1 / - 3 Partial capture
10-06 04:51 160m - / - HB9GNH -13 / - 5 Partial capture
10-06 04:51 160m -8 / -16 G1XOW +5 / -15 7 ✓ Full exchange observed
10-06 04:47 160m - / -26 DK5WL -12 / - 6 Partial capture
10-06 04:45 160m -5 / -12 F5LEN +2 / - 5 ✓ Closing observed
10-06 04:36 160m -10 / -11 HA8EV +12 / -11 4 ✓ Full exchange observed
10-06 04:35 160m -10 / -6 OK1PI +11 / -13 7 ✓ Full exchange observed
10-06 02:28 160m -10 / - WB5TUF - / -2 2 Partial capture
10-05 01:48 160m - / - 9A4ZM +11 / - 2 Partial capture
10-03 05:33 160m - / -21 HB9HFN -12 / - 4 ✓ Closing fragment
10-03 05:32 160m - / -9 EA6Y -12 / - 2 ✓ Closing fragment
10-03 05:23 160m - / -13 IK2TDM -14 / - 2 Partial capture
10-03 05:17 160m - / - LA5LJA -16 / - 2 Partial capture
10-03 05:16 160m - / - HB9HFN -10 / - 8 Partial capture
10-03 05:16 160m - / -15 IK2TDM -8 / - 4 Partial capture
10-03 04:58 160m - / - HB9HFN -7 / - 9 Partial capture
10-03 04:40 160m - / - DK3UA +6 / - 2 Partial capture
10-03 04:31 160m - / -20 OM3WBY +2 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
051300  +9 1207  KO4PRE SP9JZU JN99 (x4)
051500 +23 2970  KO4PRE SP3SLA JO83
051500  -1 1301  KO4PRE F5GN JN13 (x4)
052030  -2 1750  KO4PRE F6ECI JN05
035915 -13 2095  KO4PRE 5B4AMX -09 (x2)
045130 +18  270  KO4PRE OM2DX -20 (x2)
045300  -4  766  KO4PRE OH6NEQ KP21
80m 
UTC    dB Audio  Message
033700 +10 2434  KO4PRE R2WAF KO81
033700 +23 1959  KO4PRE OM2WQ JN88
033715 -10  819  TC1TR KO4PRE R-12
033730  -1 1853  KO4PRE R3RB LO03
033730  +7 2434  KO4PRE R2WAF KO81
033730 +22 1959  KO4PRE OM2WQ JN88
033745 -12  819  TC1TR KO4PRE R-12
033800 +19 1959  KO4PRE OM2WQ JN88
034000  -1 1853  KO4PRE R3RB LO03
045115 -14  885  UA9JTJ/4 KO4PRE FM18 (x3)
034830  +0 2254  KO4PRE TK/DH7SB -06
035000  +9 1418  KO4PRE IK4TVP -07 (x2)
40m 
UTC    dB Audio  Message
032830  -8  457  VE5PMG KO4PRE FM18 (x3)
033715 -21 2184  YN9ZDJ KO4PRE R-13 (x2)
020415 -24 1881  VE7UBA KO4PRE FM18 (x4)
020615 -21 1881  VP5/K5UR KO4PRE FM18 (x2)
004400 -16  932  HZ1IP KO4PRE FM18
004630 -14  932  VO1ACZ KO4PRE FM18
011845 -13  861  KF8EDQ KO4PRE FM18 (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

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