R4CQ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO31

Receiver-side FT8 activity involving R4CQ, decoded by SO8OO in southeastern Poland. 41 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-08 and 2026-09-20.

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 R4CQ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Most decodes (100%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

40m · 41

First attributed message: 2026-09-08
Last attributed message: 2026-09-20 19:01 UTC

Observed FT8 message patterns

Attributed sample: 41 messages
Active dates: 4 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -15 to +2 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 R4CQ in decoded directed-looking exchanges:

EU6KA · Belarus EW8HP · Belarus G8KHF · England JG4AKL · Japan LZ1ZM · Bulgaria OZ9FF · Denmark R2HE · European Russia R3IX · European Russia R3MDA · European Russia R4CI · European Russia R6FMK · European Russia RL3FA · European Russia

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 R4CQ

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 · 17 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,774 km (approx.)
Last such locator decoded: 2026-09-20 18:49 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	R4CQ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 19:14	40m	- / -17	UC6W	-18 / -	2	✓ Closing fragment
09-20 19:06	40m	- / -7	EW8CW	+1 / -	2	Partial capture
09-20 19:04	40m	- / -10	RL3FA	+4 / -	3	✓ Closing fragment
09-20 18:54	40m	- / -10	G8KHF	-1 / -	2	✓ Closing fragment
09-20 18:52	40m	- / -5	RX7KIR	+2 / -	2	✓ Closing fragment
09-18 05:27	40m	- / -21	TA3NK	-12 / -	6	Partial capture
09-18 05:25	40m	- / -3	EU6KA	-4 / -	2	✓ Closing fragment
09-17 14:33	40m	-11 / -2	RZ7KR	+1 / -	5	✓ Closing observed
09-17 14:16	40m	-12 / -	EW6MP	- / -	2	Partial capture
09-17 14:14	40m	-12 / -	UN2NC	- / -8	2	✓ Closing fragment
09-17 14:11	40m	- / -2	UA3GDJ	+5 / -	3	✓ Closing fragment
09-10 15:49	40m	+2 / -	YO8RQP	- / -	5	✓ Closing fragment
09-10 15:35	40m	-9 / -	RY9W	- / -18	3	Partial capture
09-10 15:31	40m	-11 / -5	OZ9FF	+1 / -19	8	✓ Full exchange observed
09-10 15:29	40m	-12 / -7	R2HE	-4 / -	3	✓ Closing observed
09-10 15:25	40m	-13 / -	UB9USV	- / -15	2	Partial capture
09-10 15:23	40m	-16 / -9	RU1QD	-16 / -8	7	✓ Full exchange observed
09-10 15:19	40m	-14 / -	UB3ZKO	-14 / -16	3	✓ Closing observed
09-10 15:17	40m	+1 / -	JG4AKL	-10 / -10	5	✓ Closing observed
09-08 14:46	40m	-12 / -	R8FH	- / +3	2	Partial capture
09-08 14:44	40m	- / -3	EW8HP	-5 / -	2	✓ Closing fragment
09-08 14:16	40m	- / -	R6FMK	-8 / -	2	✓ Closing fragment
09-08 14:15	40m	- / -1	R4CI	-18 / -	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
184100  -9 2545  R4CQ R3MDA RR73
184945  +3  730  UA9KBC R4CQ LO31
185230  +1  853  R4CQ RX7KIR -05 (x2)
185430  -1  650  R4CQ G8KHF -10 (x2)
190115  +0  727  RZ9AO R4CQ 73
190445  +7 2028  R4CQ RL3FA KO85 (x3)
190615  -1 1291  R4CQ DK5DW JN68
190645  +7 2699  R4CQ EW8CW R-07 (x2)
191415 -20  952  R4CQ UC6W -17 (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.

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