RV4CK — 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: LO31

Receiver-side FT8 activity involving RV4CK, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-10-23.

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 30 FT8 messages attributed to RV4CK 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 (63%), followed by 20 m (37%). Several six-hour UTC windows tied for the largest share (63%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

40m · 19 20m · 11

First attributed message: 2026-06-12
Last attributed message: 2026-10-23 17:18 UTC

Observed FT8 message patterns

Attributed sample: 30 messages
Active dates: 5 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -20 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 2.

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 RV4CK in decoded directed-looking exchanges:

EU4BE · Belarus R80SAA · Asiatic Russia R8AIF · Asiatic Russia RC6OT · European Russia RK6OU · European Russia RZ3DAB · European Russia SV3SIM · Greece UC6W · European Russia

Most frequent locator attributed to RV4CK

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: LO31 · 19 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,774 km (approx.)
Last such locator decoded: 2026-10-23 17:17 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	RV4CK S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 17:17	40m	-18 / -	R8AIF	- / -4	3	✓ Closing fragment
10-23 17:15	40m	-18 / -19	LB8TG	-15 / -	7	Partial capture
10-23 17:12	40m	-10 / -	YD1EQN	- / -	3	Partial capture
10-23 17:09	40m	-9 / -	UC6W	- / -15	3	✓ Closing fragment
10-23 17:07	40m	-12 / -	EU4BE	- / +1	3	✓ Closing fragment
10-23 16:59	40m	- / -10	DL2FM	-13 / -	2	Partial capture
10-23 16:56	40m	-12 / -	RC6OT	-12 / -	2	✓ Closing observed
10-11 14:59	40m	- / -2	EU4BE	-9 / -	6	Partial capture
10-11 14:55	40m	- / -3	R80SAA	+2 / -	2	✓ Closing fragment
10-11 14:48	40m	- / -13	RZ3DAB	-17 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
171000  -8 2688  UC6W RV4CK R-15 (x2)
171215  -7 2687  YD1EQN RV4CK LO31 (x3)
171515 -20 2180  LB8TG RV4CK LO31
171530 -15 1332  RV4CK LB8TG -19
171545 -17 2180  LB8TG RV4CK LO31 (x2)
171630 -18 1332  RV4CK LB8TG -18
171700 -20 2227  R8AIF RV4CK LO31
171700 -13 1332  RV4CK LB8TG -18
171730 -16 2227  R8AIF RV4CK R-04
171730 -13 1332  RV4CK LB8TG -18
171800 -18 2227  R8AIF RV4CK 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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