S55KZ — 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: Slovenia Most frequent locator attributed to this token: JN76

Receiver-side FT8 activity involving S55KZ, decoded by SO8OO in southeastern Poland. 95 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-30 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 95 FT8 messages attributed to S55KZ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (76%), followed by 40 m (24%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (95%); the estimated median was +2 dB.

Overview

95
Messages attributed
4
UTC dates decoded
10
Active 15-min windows
+2 dB
Estimated median S/N

Bands

80m · 72 40m · 23
First attributed message: 2026-06-30
Last attributed message: 2026-11-05 04:00 UTC

Observed FT8 message patterns

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

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 90.

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 S55KZ 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 S55KZ

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
JN76 · 47 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
631 km (approx.)
Last such locator decoded
2026-11-05 04:00 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 UTCBandS55KZ S/NCounterpartCounterpart S/NMsgsCapture
11-05 03:59 40m +7 / - NV1U - / - 3 Partial capture
11-05 03:51 40m - / -6 TC2TR -11 / - 2 ✓ Closing fragment
11-04 04:30 40m - / -18 UI6O -12 / - 2 Partial capture
11-04 04:28 40m - / -14 M0OXO -5 / - 3 ✓ Closing fragment
11-04 04:21 40m - / -19 F1PBZ +4 / - 2 Partial capture
11-01 06:13 40m +1 / - IU3MAG - / - 5 Partial capture
11-01 06:12 40m +2 / - EA4HTI - / -12 2 ✓ Closing fragment
11-01 06:10 40m +3 / - YO2CK - / -5 3 ✓ Closing fragment
11-01 06:08 80m +6 / - IQ4JO - / -13 3 Partial capture
11-01 06:06 80m +5 / - OM2KI +18 / - 3 ✓ Closing observed
11-01 06:05 80m +11 / -5 SQ2RAD -8 / - 3 ✓ Closing observed
11-01 06:03 80m +8 / 0 IU5LQC -4 / -2 5 ✓ Full exchange observed
11-01 06:02 80m - / -12 SQ6ELK +8 / - 2 ✓ Closing fragment
10-31 06:03 80m -4 / - 6W/IK2HKT - / - 3 Partial capture
10-31 05:54 80m +2 / - CT2HEX - / -8 2 ✓ Closing fragment
10-31 05:52 80m +3 / -1 DL2HT -2 / -3 5 ✓ Full exchange observed
10-31 05:49 80m +8 / - DO1NAE - / - 5 Partial capture
10-31 05:47 80m +11 / -2 PA2PF -22 / -8 4 ✓ Full exchange observed
10-31 05:44 80m +10 / - DL3OCF - / - 5 Partial capture
10-31 05:41 80m -6 / -7 G4VYC -14 / -4 5 ✓ Full exchange observed
10-31 05:39 80m +10 / -4 DL4GCJ +10 / -1 4 ✓ Full exchange observed
10-31 05:38 80m +8 / - EA4IPN - / -12 3 ✓ Closing fragment
10-31 05:36 80m -1 / +4 ON8WR -2 / -9 5 ✓ Full exchange observed
10-31 05:35 80m +3 / - CT7AUT - / -10 3 ✓ Closing fragment
10-31 05:33 80m -4 / +9 SQ9PCH 0 / -3 4 ✓ Full exchange observed
10-31 05:32 80m -6 / +6 DL6NDN +2 / +1 5 ✓ Full exchange observed
10-31 05:30 80m +8 / +1 SM5CBM +6 / -4 5 ✓ Full exchange observed
10-31 05:28 80m -2 / - DA6OOM - / -13 3 ✓ Closing fragment
10-31 05:24 80m +4 / +7 9A5MP -16 / 0 14 ✓ Full exchange observed
10-31 05:23 80m +2 / - YU65AEC -2 / +2 3 Partial capture
10-31 05:22 80m -5 / - LZ3HI -18 / -6 4 ✓ Full exchange observed
10-31 05:20 80m +1 / +2 F4EWK +4 / -5 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
061400  +1 2446  IU3MAG S55KZ JN76 (x3)
042100  +1  738  S55KZ F1PBZ -19 (x2)
042845  -5 1678  S55KZ M0OXO -14 (x3)
043045  -8 1038  S55KZ UI6O -18 (x2)
035145 -12 1971  S55KZ TC2TR -06 (x2)
035900  +1 2040  NV1U S55KZ JN76 (x3)
80m 
UTC    dB Audio  Message
060300  +8 1957  S55KZ SQ6ELK RR73
060345 +10 2722  IU5LQC S55KZ JN76
060400  -4 2722  S55KZ IU5LQC +00
060415  +8 2722  IU5LQC S55KZ R-02
060430  -5 2721  S55KZ IU5LQC RR73
060445  +5 2722  IU5LQC S55KZ 73
060530 -11 1071  S55KZ SQ2RAD -05 (x2)
060615 +11 1072  SQ2RAD S55KZ 73
060645  +5 1285  OM2KI S55KZ JN76
060700 +18 1285  S55KZ OM2KI +17 (x2)
060815  +9 2316  IQ4JO S55KZ JN76 (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