3Z100LKK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO93

Receiver-side FT8 activity involving 3Z100LKK, decoded by SO8OO in southeastern Poland. 1,253 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-07-12 and 2026-09-06.

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 1,253 FT8 messages attributed to 3Z100LKK as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (87%), followed by 80 m (13%). Most decodes (69%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -6 dB.

Overview

1,253
Messages attributed
8
UTC dates decoded
73
Active 15-min windows
-6 dB
Estimated median S/N

Bands

80m · 159 40m · 1,094
First attributed message: 2026-07-12
Last attributed message: 2026-09-06 17:26 UTC

Observed FT8 message patterns

Attributed sample
1,253 messages
Active dates
8 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-13 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 91, moderate (-15 to -9 dB) 259, strong (≥ -8 dB) 903.

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 3Z100LKK 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 3Z100LKK

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
JO93 · 2 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
440 km (approx.)
Last such locator decoded
2026-08-28 17:59 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 UTCBand3Z100LKK S/NCounterpartCounterpart S/NMsgsCapture
09-07 06:47 40m - / -24 DH8WC -11 / - 2 Partial capture
09-07 05:45 40m - / -14 SV5BYP -12 / - 3 Partial capture
09-06 17:26 40m +2 / - <...> -14 / - 2 ✓ Closing fragment
09-06 17:25 40m +3 / - EA3HLM -12 / -12 4 Partial capture
09-06 17:24 40m +3 / - LB4HK - / - 2 ✓ Closing fragment
09-06 17:23 40m +3 / -16 EA3HKY -13 / -8 4 Partial capture
09-06 17:22 40m 0 / - <...> +8 / - 4 ✓ Closing fragment
09-06 17:21 40m 0 / -13 RN6AK +8 / +4 5 Partial capture
09-06 17:16 40m -3 / -11 OZ3FON -6 / -5 3 Partial capture
09-06 17:15 40m - / - HA9OA +5 / - 9 Partial capture
09-06 17:12 40m -2 / - <...> -4 / - 13 ✓ Closing fragment
09-06 17:12 40m - / - HA9OA +4 / - 3 Partial capture
09-06 17:11 40m +2 / +6 SP5SJL +5 / +6 2 Partial capture
09-06 17:09 40m -5 / - SP5RZL - / +1 2 Partial capture
09-06 17:08 40m -6 / -1 DL7UKM 0 / +4 4 ✓ Full exchange observed
09-06 17:06 40m -7 / -12 R8CKD +2 / -4 3 Partial capture
09-06 17:05 40m -6 / - EW2GI - / +6 2 Partial capture
09-06 17:04 40m -6 / - <...> -4 / - 7 ✓ Closing fragment
09-06 17:04 40m -4 / -11 DL1ASL -14 / -12 2 Partial capture
09-06 08:39 40m - / -1 OK1ACE +2 / - 6 Partial capture
09-06 08:12 40m -14 / -2 OM0MR -16 / -7 3 Partial capture
09-06 08:12 40m -10 / - <...> -8 / - 4 ✓ Closing fragment
09-06 08:10 40m -12 / - SP5DUJ - / -17 2 Partial capture
09-06 08:07 40m -12 / +7 SQ9OUM -8 / 0 3 Partial capture
09-06 08:06 40m -17 / +9 OK1ACE +5 / +3 3 Partial capture
09-06 08:04 40m -12 / - <...> -7 / - 7 ✓ Closing fragment
09-06 08:04 40m -16 / -20 DL9BUS -18 / -10 3 Partial capture
09-06 08:00 40m - / -13 SP6AMI +2 / - 5 Partial capture
09-06 07:56 40m - / -15 YO9FDG -11 / - 5 Partial capture
09-06 07:51 40m -7 / - <...> -6 / - 3 ✓ Closing fragment
09-06 07:50 40m +12 / - SP7ROM -4 / -3 2 Partial capture
09-06 07:49 40m -10 / - SQ5MZM - / - 2 Partial capture
09-06 07:48 40m - / - SP7T +2 / - 6 Partial capture
09-06 07:45 40m -7 / +3 SP2TMT -5 / -3 2 Partial capture
09-06 07:41 40m -4 / - <...> -7 / - 9 ✓ Closing fragment
09-06 07:41 40m - / -5 DG3AWF -14 / - 5 Partial capture
09-06 07:41 40m -7 / +9 SP2TMT -2 / +2 4 Partial capture
09-06 07:37 40m - / -3 SQ8CTR 0 / - 2 Partial capture
09-06 07:34 40m -2 / - <...> -6 / - 5 ✓ Closing fragment
09-06 07:30 40m -3 / - DG3AWF - / -12 5 Partial capture
09-06 07:24 40m -6 / - <...> +2 / - 4 ✓ Closing fragment
09-06 07:14 40m - / -20 DJ2DL -21 / - 3 Partial capture
09-06 07:13 40m - / -4 DL2BCY -16 / - 4 Partial capture
09-06 07:12 40m - / +1 SP8BJU -7 / - 2 Partial capture
09-06 07:10 40m - / - OM1AN +6 / - 2 Partial capture
09-06 07:10 40m -6 / - <...> -5 / - 10 ✓ Closing fragment
09-06 07:06 40m - / - UT5ED +4 / - 2 Partial capture
09-06 07:04 40m -2 / - <...> +2 / - 2 ✓ Closing fragment
09-06 07:02 40m -2 / - US1MM - / +10 2 Partial capture
09-06 07:00 40m -5 / -13 OE3CJB -1 / -4 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
172515  +3  752  R3BDI 3Z100LKK +00
172530 -12  751  3Z100LKK EA3HLM JN11
172545  +4  752  LB4HK 3Z100LKK RR73
172600 -13  751  3Z100LKK EA3HLM JN11
172615  +3  752  EA3HLM 3Z100LKK -12
172645  +2  752  <...> 3Z100LKK RR73
172700 -14  751  3Z100LKK <...> 73
191215  -7 1861  3Z100LKK RC1C R-12
054015 -10 1723  3Z100LKK ES6RMR KO27
054545 -11 1864  3Z100LKK SV5BYP KM46 (x3)
062415 -17 1727  3Z100LKK F5HIJ IN95
064700 -10 1722  3Z100LKK DH8WC R-24 (x2)
80m 
UTC    dB Audio  Message
042930  +4 1073  3Z100LKK UT1XU KO40
042945  +7 1073  CQ 3Z100LKK
043000  +2 1073  3Z100LKK UT1XU KO40
043015  +6 1073  UT1XU 3Z100LKK -17
043030  +2 1073  3Z100LKK UT1XU R-16
043115  -6 1073  CQ 3Z100LKK
043215  +3 1073  UR5TOC 3Z100LKK -16
043315  +0 1073  CQ 3Z100LKK
043330 -17 1074  3Z100LKK SP3PM JO72 (x2)
043845 +14 1073  3Z100LKK SP9TEX +04
043915 +12 1073  SP90K 3Z100LKK RR73
200615 -16 1216  3Z100LKK SP5SJL KO02 (x2)
042015 +11  587  3Z100LKK OK1XV JN79
20m 
UTC    dB Audio  Message
135345 -16  994  3Z100LKK PF1B JO22
140100 +10 1571  3Z100LKK G6ZRV JO02 (x4)
140445  -7 1575  3Z100LKK 9A5MTV -05
142700  -6 1052  3Z100LKK RU6FK -16 (x2)
145500  -3 2507  3Z100LKK <...> 73 (x3)
135330 -13  798  3Z100LKK TA1MB KN41
135800 -12 2454  3Z100LKK <F6ARS> 73
141200 -13 2268  3Z100LKK <...> 73 (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.

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