RC3KK — 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: European Russia Most frequent locator attributed to this token: KO90

Receiver-side FT8 activity involving RC3KK, decoded by SO8OO in southeastern Poland. 41 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-11-01.

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 41 FT8 messages attributed to RC3KK as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (85%), followed by 80 m (7%) and 10 m (7%). Several six-hour UTC windows tied for the largest share (93%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 3 40m · 35 10m · 3

First attributed message: 2026-06-15
Last attributed message: 2026-11-01 02:40 UTC

Observed FT8 message patterns

Attributed sample: 41 messages
Active dates: 5 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -15 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 14.

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 RC3KK in decoded directed-looking exchanges:

DA0M · Fed. Rep. of Germany EA4HTI · Spain HB9EFK · Switzerland PY1USK · Brazil PY2UTY · Brazil TA1MB · European Turkey TA3XEE · Asiatic Turkey S51SLO · Slovenia

Most frequent locator attributed to RC3KK

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: KO90 · 20 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,223 km (approx.)
Last such locator decoded: 2026-11-01 02:40 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	RC3KK S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 02:39	40m	-12 / -	9Y4C	- / -	2	Partial capture
11-01 02:33	40m	-9 / -	HB9EFK	- / -1	3	✓ Closing fragment
11-01 02:29	40m	-16 / -	9Y4C	- / -	2	Partial capture
11-01 02:24	40m	-15 / -	TA1MB	- / -7	2	✓ Closing fragment
11-01 02:21	40m	-13 / -	PY1USK	- / -	3	✓ Closing fragment
11-01 02:19	40m	-11 / -	WA4FU	- / -	2	Partial capture
11-01 02:18	40m	-8 / -	PY2UTY	- / -19	2	✓ Closing fragment
11-01 02:15	40m	-13 / -	DA0M	- / -14	3	✓ Closing fragment
11-01 02:14	40m	-13 / -	EA4HTI	-17 / -14	4	✓ Closing observed
10-27 03:28	80m	+10 / 0	S51SLO	-2 / -5	5	✓ Full exchange observed
10-27 03:26	40m	+9 / -	KM4SXE	- / -	2	Partial capture
10-27 03:24	40m	-4 / -	K1JAK	- / -	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
022115 -13  887  PY1USK RC3KK KO90 (x3)
022415 -16  887  TA1MB RC3KK -07 (x2)
022545 -15  887  WA4FU RC3KK KO90
022645 -12  886  LW2HAH RC3KK KO90
022815  -8  887  RT4A/P RC3KK R-15
022915 -17  887  9Y4C RC3KK KO90 (x2)
023330  -7  594  HB9EFK RC3KK KO90 (x3)
023945 -13  594  9Y4C RC3KK KO90 (x2)

80m

UTC    dB Audio  Message
032830  +8  526  S51SLO RC3KK KO90
032845  -4 1453  RC3KK S51SLO +00
032900 +11  526  S51SLO RC3KK R-05
032915  +1 1453  RC3KK S51SLO RR73
032930 +10  526  S51SLO RC3KK 73

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

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