R9CB — 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: Asiatic Russia Most frequent locator attributed to this token: LO97

Receiver-side FT8 activity involving R9CB, decoded by SO8OO in southeastern Poland. 2,187 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 103 UTC dates in the available aggregate history. Observed between 2026-06-07 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 2,187 FT8 messages attributed to R9CB as the transmitting token by decoded message structure across 103 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (46%), followed by 20 m (36%) and 40 m (18%). Most decodes (86%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.1 dB.

Overview

2,187

Messages attributed

103

UTC dates decoded

378

Active 15-min windows

-10.1 dB

Estimated median S/N

Bands

80m · 1,002 40m · 402 20m · 783

First attributed message: 2026-06-07
Last attributed message: 2026-10-23 03:23 UTC

Observed FT8 message patterns

Attributed sample: 2,187 messages
Active dates: 103 UTC dates
Estimated median S/N: -10.1 dB
Estimated 10th-90th percentile: -21 to +2.1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 617, moderate (-15 to -9 dB) 617, strong (≥ -8 dB) 953.

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 R9CB in decoded directed-looking exchanges:

R5AV · European Russia ×4 9A3K · Croatia ×3 R50RKZ · European Russia ×2 8S2C · Sweden ×2 G1CEC · England ×2 II5GG · Italy ×2 LZ1GC · Bulgaria ×2 ON8WR · Belgium ×2 R1QF/P · European Russia ×2 R4UA · European Russia ×2 R80SAA · Asiatic Russia ×2 UA9SY · Asiatic Russia ×2

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 R9CB

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: LO97 · 1,429 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,551 km (approx.)
Last such locator decoded: 2026-10-23 03:23 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	R9CB S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 16:14	40m	- / -12	YE4FNN	-10 / -	2	✓ Closing fragment
10-23 03:18	80m	-9 / -	TK/DH7SB	- / -	3	Partial capture
10-23 03:15	80m	-14 / -	TK/DH7SB	- / -	2	Partial capture
10-23 03:07	80m	-6 / -	TK/DH7SB	- / -	2	Partial capture
10-23 02:56	80m	-8 / -2	UA9FMT	-2 / +3	5	✓ Full exchange observed
10-23 02:53	80m	-4 / -	WB6WUW	- / -	4	Partial capture
10-23 02:50	80m	-4 / -	OH3BYZ	- / -	2	Partial capture
10-23 02:36	80m	-11 / -	R2EA/P	- / -12	7	Partial capture
10-23 02:34	80m	-10 / 0	RN3YN	-3 / -8	4	✓ Full exchange observed
10-23 02:30	80m	-6 / -2	RA5AD	+4 / -2	8	✓ Full exchange observed
10-23 02:28	80m	-4 / -18	CT7AUT	-11 / -	5	✓ Closing observed
10-23 02:25	80m	-6 / -	7P8GE	- / -11	6	✓ Closing fragment
10-23 01:58	80m	-2 / -	7P8GE	- / -	2	Partial capture
10-23 01:55	80m	- / -	CT2HEX	-15 / -	3	Partial capture
10-23 01:53	80m	- / -	ON4MAP	-12 / -	4	Partial capture
10-23 01:49	80m	-12 / -11	SP6NIV	+12 / -11	4	✓ Full exchange observed
10-23 00:02	80m	-2 / -	D2UY	- / -	4	Partial capture
10-22 23:59	80m	-19 / -6	OM1TD	+2 / -	5	✓ Closing observed
10-22 23:55	80m	-8 / -	D2UY	- / -	4	Partial capture
10-22 16:47	80m	- / -	ER5AR	-13 / -	2	Partial capture
10-22 16:46	80m	-12 / -	RO2X	-3 / -	3	✓ Closing observed
10-22 16:45	80m	-12 / -	R1QF/P	-16 / +9	4	✓ Closing observed
10-22 16:41	40m	- / -1	RT2H	+6 / -	3	✓ Closing fragment
10-22 15:34	40m	-11 / -12	R1QF/P	0 / 0	3	✓ Full exchange observed
10-22 15:23	40m	-16 / -	BG4GNW	- / -	3	✓ Closing fragment
10-22 15:21	40m	-16 / -	BD3PPH	- / -12	2	✓ Closing fragment
10-22 15:20	40m	-13 / -4	RM1O	-7 / +6	4	✓ Full exchange observed
10-22 15:18	40m	-15 / -	BI1AFK	- / -4	3	✓ Closing fragment
10-22 03:30	40m	- / -20	TO4A	+7 / -	2	Partial capture
10-22 03:08	40m	-11 / -	TO4A	- / -	3	Partial capture
10-22 03:01	40m	-18 / -	PQ5TA	- / -	2	Partial capture
10-22 02:27	80m	+3 / -10	CT2HEX	-2 / -21	6	Partial capture
10-22 02:24	80m	+2 / -9	HB9IQM	+12 / -18	6	✓ Full exchange observed
10-22 02:19	80m	+3 / -	ON1JP	- / -25	3	Partial capture
10-22 02:13	80m	0 / -6	SN0EG	+14 / -	4	✓ Closing observed
10-22 02:07	80m	- / +5	UA3RBM	+2 / -	4	✓ Closing fragment
10-22 02:05	80m	0 / -	ON4MAP	-6 / -20	3	Partial capture
10-22 01:52	80m	-2 / -	9A60CBM	- / -	4	Partial capture
10-22 01:48	80m	-2 / -	DA125RH	- / -	7	Partial capture
10-21 14:56	40m	-12 / -	3W9A	- / -	4	Partial capture
10-21 03:17	40m	- / -13	EA6ABF	+2 / -	2	✓ Closing fragment
10-21 02:35	40m	- / -8	CT7BRV	-10 / -	2	✓ Closing fragment
10-21 02:15	80m	-5 / -	9A60CBM	- / -	4	Partial capture
10-21 02:13	80m	-5 / -	EA5JK	- / -	3	Partial capture
10-21 02:09	80m	-7 / -6	UA3YFL	+4 / +6	7	✓ Full exchange observed
10-21 02:05	80m	-5 / -12	ON4MAP	-1 / -25	9	Partial capture
10-21 01:59	80m	- / -5	R5AV	+14 / -	2	✓ Closing fragment
10-21 01:59	80m	-7 / -4	RW1AI	+2 / +3	4	✓ Full exchange observed
10-21 01:56	80m	-10 / -11	9A2G	+8 / -	7	✓ Closing observed
10-21 01:56	80m	-11 / -16	DL1MEV	+4 / -2	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
152445 -16 3107  BG4GNW R9CB RR73
152545 -14 3106  CQ R9CB LO97 (x3)
152715 -16 3107  R9OON R9CB +03
153145 -15 3107  R1QF/P R9CB LO97
153400  -1 2499  R9CB R1QF/P -12
153415 -11 3107  R1QF/P R9CB R+00
153430  +0 2498  R9CB R1QF/P RR73
164115 -17  743  R9CB SP5ALV R-01
164145  +7 2660  R9CB RT2H KO84 (x3)
161445 -10 2371  R9CB YE4FNN -12 (x2)

80m

UTC    dB Audio  Message
025730  -3 1512  R9CB UA9FMT 73
025945 -15 2307  CQ R9CB LO97 (x6)
030700  -6 1008  <TK/DH7SB> R9CB LO97 (x8)

20m

UTC    dB Audio  Message
034000  -8  948  FR5CB R9CB LO97 (x7)
034630 -17 2317  RI1ANC R9CB LO97 (x5)
114300 +13 2796  R9CB 9A170NT +09
114315 -20 3062  <...> R9CB R+08 (x2)

10m

UTC    dB Audio  Message
072215  +2 2213  R9CB 9A3K JN65 (x3)

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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