R8CA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: MO06

Receiver-side FT8 activity involving R8CA, decoded by SO8OO in southeastern Poland. 129 FT8 messages attributed to this token as transmitter, on 160m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-10 and 2026-09-17.

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 129 FT8 messages attributed to R8CA as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (47%), followed by 160 m (38%) and 40 m (15%). Most decodes (66%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

129

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

160m · 49 40m · 19 20m · 61

First attributed message: 2026-07-10
Last attributed message: 2026-09-17 17:59 UTC

Observed FT8 message patterns

Attributed sample: 129 messages
Active dates: 7 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -20 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 41, moderate (-15 to -9 dB) 37, strong (≥ -8 dB) 51.

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 R8CA in decoded directed-looking exchanges:

RU3DBT · European Russia ×2 DN9CHV · Fed. Rep. of Germany RI1FJZ · Franz Josef Land BG8HNC · China CE2EP · Chile EA5KDD · Spain EI3GGB · Ireland IZ1HJU · Italy KC2HRG · United States M1WLK · England M7WSY · England N1WI · United States

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 R8CA

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: MO06 · 81 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,670 km (approx.)
Last such locator decoded: 2026-09-17 17:58 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	R8CA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 17:58	160m	-12 / -	RD1A/7	- / -3	2	Partial capture
09-17 17:43	160m	-14 / -	RI1FJZ	- / -16	2	✓ Closing fragment
08-18 16:04	10m	- / -	DN9CHV	-16 / -	5	✓ Closing fragment
08-15 23:37	160m	-6 / -9	RU3DBT	-14 / -13	8	✓ Full exchange observed
08-15 23:01	160m	- / -	DL4KSD	-10 / -	2	Partial capture
08-15 22:59	160m	-11 / -	<...>	- / -16	2	Partial capture
07-26 18:35	40m	-6 / -	G6MTI	- / -15	2	✓ Closing fragment
07-26 18:33	40m	-8 / -	RL3QGD	-22 / -5	4	✓ Closing observed
07-26 18:31	40m	-7 / -	EW8ABG	- / -	2	Partial capture
07-26 18:26	40m	-7 / -	M7LBT	- / -11	5	✓ Closing fragment
07-26 18:11	40m	-16 / -	VK2NN	- / -21	2	✓ Closing fragment
07-26 16:59	40m	-12 / -	YD9CDU	- / -17	2	Partial capture
07-13 11:37	20m	-21 / -	KC2HRG	- / -19	2	✓ Closing fragment
07-13 11:34	20m	-18 / -	N1WI	- / -24	3	✓ Closing fragment
07-13 10:10	20m	- / -5	HB9TIH	-21 / -	5	Partial capture
07-11 22:11	20m	-16 / -	CE2EP	- / -7	2	✓ Closing fragment
07-11 22:08	20m	-16 / -	PD3CFG	- / -14	2	Partial capture
07-11 22:06	20m	-17 / -	LU7KCL	- / -	5	Partial capture
07-11 22:02	20m	-20 / -	PY1USK	- / -	2	✓ Closing fragment
07-11 22:01	20m	- / +4	EI3GGB	-4 / -	2	✓ Closing fragment
07-11 21:46	20m	-18 / -	IZ1HJU	- / -9	2	✓ Closing fragment
07-11 21:37	20m	-18 / -	<...>	- / -	11	Partial capture
07-11 15:07	20m	-6 / -	BG8HNC	- / -9	2	✓ Closing fragment
07-11 15:06	20m	-3 / -	VE2OPR	- / -14	3	✓ Closing fragment
07-11 15:02	20m	+2 / -	EA5KDD	- / -18	3	✓ Closing fragment
07-11 13:27	20m	-15 / -6	PD1GP	-20 / -17	6	✓ Full exchange observed
07-11 13:26	20m	-8 / -	9K2MP	- / -	2	Partial capture
07-11 13:18	20m	-22 / -	R1BGR	- / -11	2	✓ Closing fragment
07-11 13:17	20m	- / -3	PD0HLA	-7 / -	2	Partial capture
07-11 13:11	20m	-4 / -	M7WSY	- / -13	2	✓ Closing fragment
07-11 11:22	20m	- / -	EA5HEU	-12 / -	2	Partial capture
07-10 15:48	20m	-12 / -	M1WLK	- / -6	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
231315  -5 1468  CQ R8CA MO06 (x11)
174315 -11 1456  RI1FJZ R8CA R-16 (x2)
175845 -13 1385  <RD1A/7> R8CA MO06 (x2)

10m

UTC    dB Audio  Message
160430 -11 2093  R8CA DN9CHV JO31 (x5)
160900 -19 1526  R8CA PA1GLD JO21

40m

UTC    dB Audio  Message
182730  -7 1414  M7LBT R8CA 73 (x3)
183045  -5 1414  9A3TGY R8CA MO06
183130  -7 1414  EW8ABG R8CA MO06 (x2)
183230  -5 1414  CQ R8CA MO06
183245 -16 1039  R8CA DL6UM JO60
183300  -6 1414  RL3QGD R8CA -05 (x2)
183345 -22 1415  R8CA RL3QGD 73
183430  -9 1414  RL3QGD R8CA -07
183530  -6 1413  G6MTI R8CA -15
183545 -11  778  R8CA UA3SCU +17
183600  -7 1413  G6MTI R8CA RR73

20m

UTC    dB Audio  Message
101045 -19 1692  R8CA HB9TIH JN36
101100 -20 1503  CQ R8CA MO06
101145 -22 1693  R8CA HB9TIH JN36 (x4)
113330 -13 1556  TF3JB R8CA MO06
113400 -13 1556  R1BKC R8CA -06
113430 -16 1556  N1WI R8CA MO06 (x3)
113645 -15 2159  R8CA RL3K KO91
113745 -21 1556  KC2HRG R8CA R-19 (x2)
113930 -18 1853  R8CA F4HSB JN37

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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