RA4CBN — 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: LO42

Receiver-side FT8 activity involving RA4CBN, decoded by SO8OO in southeastern Poland. 163 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-22.

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 163 FT8 messages attributed to RA4CBN as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (34%), followed by 80 m (29%) and 20 m (19%). Most decodes (62%) 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 -10 dB.

Overview

163

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

160m · 30 80m · 47 40m · 55 20m · 31

First attributed message: 2026-06-11
Last attributed message: 2026-10-22 15:03 UTC

Observed FT8 message patterns

Attributed sample: 163 messages
Active dates: 25 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -19 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 56, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 66.

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 RA4CBN in decoded directed-looking exchanges:

PI4DX · Netherlands R4WR · European Russia R80SAA · Asiatic Russia R8AC · Asiatic Russia R9CS/P · European Russia RA3RDN · European Russia RA3VX · European Russia RM5F · European Russia RU3FM · European Russia RU3VT · European Russia RU3X · European Russia UA3PTK · 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 RA4CBN

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: LO42 · 76 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,905 km (approx.)
Last such locator decoded: 2026-10-22 15:02 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	RA4CBN S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 15:02	40m	-19 / -5	R1QF/P	-14 / -5	4	✓ Full exchange observed
10-18 13:54	40m	- / +9	EX7CQ	-12 / -	2	✓ Closing fragment
10-18 13:44	40m	- / -4	RQ3M	-11 / -	3	✓ Closing fragment
10-18 13:43	40m	- / -7	LZ3SD	-8 / -	2	✓ Closing fragment
10-18 13:37	40m	- / -	OE6TNO	-3 / -	9	Partial capture
10-18 13:29	40m	- / -	R3WDW	-4 / -	3	✓ Closing fragment
10-16 16:19	160m	- / +1	RA3VX	-14 / -	3	✓ Closing fragment
10-16 16:19	160m	- / +1	RU3FM	-10 / -	3	✓ Closing fragment
10-15 14:57	160m	- / +5	R80SAA	-23 / -	2	✓ Closing fragment
10-14 16:23	160m	-16 / -	UA9LLE	- / -21	4	✓ Closing fragment
10-14 16:22	160m	-18 / -	R4WR	- / -10	2	✓ Closing fragment
10-14 16:21	160m	- / -1	RU3X	-11 / -	3	✓ Closing fragment
10-14 16:19	160m	-14 / -6	UA3PTK	-16 / -	3	✓ Closing observed
10-14 16:17	160m	-16 / +4	RA3LCI	-14 / -22	3	Partial capture
10-14 16:15	160m	-15 / -	R8AC	- / -15	3	✓ Closing fragment
10-14 16:10	160m	-13 / -	R9CS/P	-13 / -	8	✓ Closing observed
10-07 14:38	40m	-14 / -	RA1TR	-4 / -5	5	Partial capture
10-07 14:35	40m	-17 / -13	UA4WCS	-15 / -18	8	✓ Full exchange observed
10-07 14:34	40m	-16 / +6	EW7LZ	-10 / -	3	✓ Closing observed
10-07 14:29	40m	- / -4	RN6HGI	-4 / -	2	✓ Closing fragment
10-07 14:26	40m	-16 / -	RV3SBS	- / -12	2	Partial capture
10-07 14:21	40m	-18 / -	RD9M/3	- / -10	4	Partial capture
10-05 17:22	160m	- / -8	RU3VT	-22 / -	5	✓ Closing fragment
10-05 17:22	160m	- / -25	SV2AEL	+7 / -	5	Partial capture
10-03 14:37	80m	- / -1	RK3ZB	-8 / -	2	✓ Closing fragment
09-25 15:41	40m	- / -3	RD3FY	-6 / -	2	Partial capture
09-23 01:16	80m	+3 / 0	RA9FUE	-5 / +7	4	✓ Full exchange observed
09-23 01:13	80m	+3 / -1	R4KR	-6 / +2	5	✓ Full exchange observed
09-23 01:12	80m	+3 / -4	R7KKO	-7 / -19	4	✓ Full exchange observed
09-23 01:07	80m	0 / -	RI1FJZ	-18 / -10	9	✓ Closing observed
09-23 00:54	160m	- / -	F5RRS	-21 / -	3	Partial capture
09-23 00:53	160m	-10 / -9	PI4DX	+14 / -4	4	✓ Full exchange observed
09-23 00:44	160m	-6 / -1	RM5F	+8 / -	5	✓ Full exchange observed
09-19 16:06	40m	-2 / +7	RT4A/P	-6 / +4	3	✓ Full exchange observed
09-19 15:59	40m	-5 / -	RT4A/P	- / -	11	Partial capture
08-26 14:47	40m	-14 / -	UB6LLI	- / -9	2	✓ Closing fragment
08-26 14:44	40m	-13 / +5	R3WDW/P	-4 / -4	7	✓ Full exchange observed
08-25 14:53	40m	-16 / -	RL1I/P	- / -9	2	✓ Closing fragment
08-15 07:18	20m	-14 / -	R0SDM/P	- / -	2	Partial capture
08-15 06:00	20m	-18 / -	R0SDM/P	- / -	3	Partial capture
08-15 05:33	20m	-9 / -	R0SDM/P	- / -	3	Partial capture
08-15 05:20	20m	-10 / -	R0SDM/P	- / -	2	Partial capture
08-12 18:20	80m	-12 / -1	R4NBV	-14 / +8	5	✓ Full exchange observed
08-12 18:20	80m	-14 / -2	R6BH	-11 / -1	10	Partial capture
08-12 18:18	80m	-7 / -	R4CBQ	- / -6	2	✓ Closing fragment
08-12 18:16	80m	-5 / -15	JG3TRB	-12 / -19	9	✓ Full exchange observed
08-12 18:15	80m	-6 / -5	RA3TSK	-18 / -	4	✓ Closing observed
08-12 18:13	80m	-3 / 0	RU4SS	-11 / +9	5	✓ Full exchange observed
08-12 18:12	80m	0 / +10	R8CKD	-16 / -2	5	✓ Full exchange observed
08-12 18:11	80m	0 / -20	SV2AEL	+7 / -9	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
134100  -3 1037  RA4CBN OE6TNO JN77 (x2)
134330  -8  624  RA4CBN LZ3SD R-07 (x2)
134430 -13 2184  RA4CBN RQ3M KO97 (x3)
134630  -6 2370  RA4CBN IQ4JO JN63
134945 -17 1037  BG0FQU RA4CBN R-11
135430 -11 1716  RA4CBN EX7CQ +09 (x2)
150215 -17 2171  R1QF/P RA4CBN LO42
150230 -14 2499  RA4CBN R1QF/P -05
150245 -18 2171  R1QF/P RA4CBN R-05 (x2)

160m

UTC    dB Audio  Message
162245 -14 1092  R4WR RA4CBN RR73
162315 -15 1092  UA9LLE RA4CBN -21 (x4)
162600 -24 1600  RA4CBN RA3RDN 73
145700 -24 1619  RA4CBN R80SAA +05 (x2)
161900 -13  941  RA4CBN RU3FM KO94
161900 -13 1094  RA4CBN RA3VX LO06 (x3)
162030  -9  942  RA4CBN RU3FM R+01 (x2)
162400  -9  592  RA4CBN LZ3YY KN32

80m

UTC    dB Audio  Message
011315  +2  891  R7KKO RA4CBN 73
011330  -4  892  RA4CBN R4KR LO64
011345  +2  891  R4KR RA4CBN +02
011400  -6  891  RA4CBN R4KR R-01
011415  +4  891  R4KR RA4CBN RR73
011430  -8  892  RA4CBN R4KR 73
011445  +6  891  CQ RA4CBN LO42 (x2)
011600  -2  595  RA4CBN RA9FUE LO89
011615  +3  891  RA9FUE RA4CBN +07
011630  -8  595  RA4CBN RA9FUE R+00
011645  +3  891  RA9FUE RA4CBN RR73
143400 -19 1789  RA4CBN RO2E/P +13
143730  -8 1339  RA4CBN RK3ZB -01 (x2)

20m

UTC    dB Audio  Message
062230  -8 2044  RA4CBN DB7GE JN39
050115  -5 2903  R0SDM/P RA4CBN LO42 (x11)
071700 -14  857  CQ RA4CBN LO42
071830 -16  858  R0SDM/P RA4CBN LO42 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee