R8CBB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: MO09

Receiver-side FT8 activity involving R8CBB, decoded by SO8OO in southeastern Poland. 318 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 16 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-13.

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 318 FT8 messages attributed to R8CBB as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (75%), followed by 40 m (25%). Most decodes (87%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -1.1 dB.

Overview

318

Messages attributed

UTC dates decoded

Active 15-min windows

-1.1 dB

Estimated median S/N

Bands

40m · 80 20m · 238

First attributed message: 2026-06-06
Last attributed message: 2026-09-13 00:03 UTC

Observed FT8 message patterns

Attributed sample: 318 messages
Active dates: 16 UTC dates
Estimated median S/N: -1.1 dB
Estimated 10th-90th percentile: -12 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 76, strong (≥ -8 dB) 235.

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 R8CBB in decoded directed-looking exchanges:

PW8BR · Brazil ×3 R6ZEJ · European Russia ×2 CN2DX · Morocco CX6TU · Uruguay E77FN · Bosnia-Herzegovina EA8UP · Canary Islands EX8ABC · Kyrgyzstan F1PBZ · France F4LNM · France G3YQA · England HS0ZOY · Thailand IZ5SIH · Italy

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 R8CBB

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: MO09 · 146 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,684 km (approx.)
Last such locator decoded: 2026-08-23 19:25 UTC

Other locator fields attributed to this token: MO06 (43).

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	R8CBB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 00:01	40m	-14 / -	VU2SW	- / -	4	Partial capture
09-13 00:00	40m	-13 / -12	PW8BR	-8 / -	3	✓ Closing observed
08-27 02:16	20m	- / -19	R9CP	-7 / -	3	Partial capture
08-27 02:13	20m	- / -	KE4EB	-4 / -	4	Partial capture
08-27 02:09	20m	- / -4	K5RCR	-15 / -	3	✓ Closing fragment
08-27 02:03	20m	- / -5	XQ3MCC	-12 / -	4	✓ Closing fragment
08-25 00:44	40m	- / -12	CT7AUT	-6 / -	2	✓ Closing fragment
08-25 00:40	40m	-9 / -4	CT2HEX	-5 / -5	3	✓ Full exchange observed
08-24 20:28	40m	-10 / -	JH5LCN	- / -	2	✓ Closing fragment
08-24 20:26	40m	-12 / -	VK6BAD	- / -	2	Partial capture
08-24 20:22	40m	-13 / -	VK6BAD	- / -	3	Partial capture
08-24 20:21	40m	-12 / -8	R7ZY	+5 / -	4	✓ Closing observed
08-24 20:12	40m	-8 / -	BD6KDG	- / -13	2	✓ Closing fragment
08-24 20:11	40m	-11 / -	UA0LQE	- / -16	2	Partial capture
08-24 20:09	40m	- / -	RK6MC	-2 / -	2	Partial capture
08-24 20:06	40m	-7 / -	YE4FNN	-6 / -	2	✓ Closing observed
08-24 20:03	40m	-5 / -11	RD7O	-2 / -1	6	✓ Full exchange observed
08-24 20:00	40m	-6 / -	BD6KDG	- / -18	4	Partial capture
08-24 19:56	40m	-6 / -	F6FHZ	-9 / -6	3	✓ Closing observed
08-24 19:54	40m	-6 / -	G1WFJ	-10 / -15	3	✓ Closing observed
08-24 19:52	40m	-8 / -10	DK3ME	+6 / -6	5	✓ Full exchange observed
08-24 19:50	40m	- / +9	UA3DPM	-1 / -	3	✓ Closing fragment
08-24 19:50	40m	-9 / -21	DL8LE	+14 / -	7	✓ Closing observed
08-24 19:47	40m	-7 / -6	IV3FSG	+9 / -	4	Partial capture
08-23 19:25	40m	-10 / -	JE1POK	- / -	2	Partial capture
08-23 19:23	40m	-9 / +9	4X5JK	-10 / -10	5	✓ Full exchange observed
08-23 18:55	40m	-9 / -5	R4HHN	+2 / -	2	Partial capture
08-23 18:55	40m	- / -	R3TAF	-11 / -	3	Partial capture
08-23 18:53	40m	-11 / -6	RU3T	-4 / -	5	✓ Full exchange observed
08-23 18:49	20m	-16 / -22	IZ8EYN	0 / -16	6	Partial capture
08-23 18:47	20m	-20 / -15	PA0GSP	-3 / -	3	✓ Closing observed
08-14 07:25	20m	- / 0	UA3YAJ	-18 / -	3	✓ Closing fragment
08-14 07:21	20m	- / -23	E77FN	-8 / -	4	✓ Closing fragment
08-14 07:10	20m	- / 0	UA3ZMQ	-22 / -	4	✓ Closing fragment
08-14 07:09	20m	- / -12	F4LNM	-3 / -	3	✓ Closing fragment
08-09 11:12	20m	-12 / -	LB4PI	- / -	2	Partial capture
08-07 23:47	20m	- / -15	W4PSK	-2 / -	2	Partial capture
07-26 08:53	20m	- / -	DL2JB	+6 / -	4	Partial capture
07-26 04:18	20m	- / -13	PW8BR	-7 / -	5	✓ Closing fragment
07-25 17:14	20m	- / -	RA3ZAL	-9 / -	3	✓ Closing fragment
07-25 17:13	20m	- / -10	ON4ASV	+7 / -	3	✓ Closing fragment
07-25 13:59	20m	- / -8	R3PLA	-10 / -	4	✓ Closing fragment
07-24 21:15	20m	-13 / -12	CX6TU	-14 / -	2	✓ Closing observed
07-24 21:10	20m	-11 / -14	HS0ZOY	-10 / -	2	✓ Closing observed
07-24 17:41	20m	- / -7	EA8UP	-9 / -	5	✓ Closing fragment
07-21 20:04	20m	- / -9	CN2DX	+3 / -	2	✓ Closing fragment
07-21 15:08	20m	- / -3	RD3TBQ	+12 / -	3	✓ Closing fragment
07-21 15:01	20m	- / -12	G3YQA	+4 / -	2	✓ Closing fragment
07-21 09:51	20m	- / -8	UA3TEK	-8 / -	4	✓ Closing fragment
07-21 09:46	20m	- / -13	UB4FGK	-15 / -	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
203115  -8 2539  CQ R8CBB MO06
004030  -6  738  R8CBB CT2HEX -04
004045  -9 2540  CT2HEX R8CBB R-05
004100  -4  737  R8CBB CT2HEX RR73
004430  -3 1470  R8CBB CT7AUT -12 (x2)
225230  -9 1761  R8CBB EG26PDA -18
235800 -13 2545  JY5IB R8CBB MO06
000015  -7  683  R8CBB PW8BR -12 (x2)
000100 -13 2546  PW8BR R8CBB 73
000130 -14 2545  VU2SW R8CBB MO06 (x4)

20m

UTC    dB Audio  Message
020345 -11  878  R8CBB XQ3MCC FF46 (x3)
020945 -14 2231  R8CBB K5RCR EN80 (x3)
021345  -4 2554  R8CBB KE4EB FM17 (x4)
021645  -5 2557  R8CBB R9CP -19 (x3)
015215 -24 1396  R8CBB KC2NDA FN21
015345 -13 2541  R8CBB KJ4HI RR73

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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