KC9LBF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EN44

Receiver-side FT8 activity involving KC9LBF, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-16 and 2026-06-18.

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 5 FT8 messages attributed to KC9LBF as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -20 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-20 dB

Estimated median S/N

Bands

20m · 5

First attributed message: 2026-06-16
Last attributed message: 2026-06-18 05:49 UTC

Observed FT8 message patterns

Attributed sample: 5 messages
Active dates: 2 UTC dates
Estimated median S/N: -20 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with KC9LBF in decoded directed-looking exchanges:

IZ8VYU · Italy OZ5NJ · Denmark PI4DX · Netherlands DM5KM · Fed. Rep. of Germany EA6AJW · Balearic Islands F1MXE · France F1TXI · France F5UKW · France F8NHF · France HB10GBT · Switzerland HB9EFK · Switzerland M0CKX · England

Most frequent locator attributed to KC9LBF

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: EN44
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,671 km (approx.)
Last such locator decoded: 2026-06-18 05:42 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 UTC	Band	KC9LBF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 06:10	40m	- / -15	MI0NWA	-12 / -	2	✓ Closing fragment
09-17 05:52	40m	- / -16	F1MXE	-6 / -	2	✓ Closing fragment
09-17 05:49	40m	- / -18	DM5KM	+5 / -	3	✓ Closing fragment
09-10 05:25	40m	- / -11	HB9EFK	+6 / -	2	✓ Closing fragment
08-27 05:34	40m	- / -	M0KSE	-16 / -	2	Partial capture
08-27 05:30	40m	- / -13	M0CKX	-16 / -	2	✓ Closing fragment
08-26 05:30	40m	- / -13	PD0WL	-12 / -	3	Partial capture
08-26 05:28	40m	- / -8	F5UKW	+4 / -	4	✓ Closing fragment
08-26 05:26	40m	- / -18	PD4RJ	-20 / -	2	Partial capture
08-26 05:22	40m	- / -8	HB10GBT	-10 / -	2	✓ Closing fragment
08-26 05:21	40m	- / +2	EA6AJW	-20 / -	2	✓ Closing fragment
08-20 06:24	40m	- / -7	F1TXI	-6 / -	2	✓ Closing fragment
08-11 05:42	40m	- / -13	HB9CXZ	-22 / -	3	Partial capture
08-06 05:41	20m	- / -25	PI4DX	-16 / -	2	✓ Closing fragment
08-06 05:27	40m	- / -16	F8NHF	-18 / -	4	✓ Closing fragment
07-28 05:56	20m	- / -12	OZ5NJ	-4 / -	2	✓ Closing fragment
06-24 05:28	20m	- / -	EA1IOK	-14 / -	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
053030 -19 1976  KC9LBF M0CKX -13 (x2)
053415 -16  298  KC9LBF M0KSE IO83 (x2)
060430 -10  979  KC9LBF GJ0KYZ -14
052000  -6  329  KC9LBF IC8TEM JN70
052515  +6 2011  KC9LBF HB9EFK -11 (x2)
054930  +9  740  KC9LBF DM5KM -18 (x3)
055215  -4 2494  KC9LBF F1MXE -16 (x2)
061000 -12  929  KC9LBF MI0NWA -15 (x2)

20m

UTC    dB Audio  Message
052815 -12  556  KC9LBF EA1IOK IN62 (x2)
055600  -3  680  KC9LBF OZ5NJ -12 (x2)
054115 -17 2289  KC9LBF PI4DX -25 (x2)
054330 -17 1186  KC9LBF IZ8VYU 73

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