R4CBF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO31

Receiver-side FT8 activity involving R4CBF, decoded by SO8OO in southeastern Poland. 360 related FT8 messages, 2 CQ messages, observed on 80m, 40m, 20m, 10m, across 35 UTC dates. Heard between 2026-06-04 and 2026-08-20.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

360

Related messages

CQ messages

UTC dates heard

-9 dB

Mean decoder S/N

Bands

80m 20m 40m 10m

First seen: 2026-06-04
Last seen: 2026-08-20 15:12 UTC

Frequent QSO partners observed at SO8OO

Stations R4CBF worked most often, as logged from our receiver:

RT6Z · European Russia ×2 UA1WCF · European Russia ×2 RA9SJG · Asiatic Russia ×2 R4CI · European Russia ×2 R4DB · European Russia ×2 R2SN · European Russia ×2 RN6LBT · European Russia ×2 UA3ADE · European Russia R3KFT · European Russia RV6AVU · European Russia RA3ZGT · European Russia UI5A · European Russia

Activity Heatmap

Locator transmitted by R4CBF

Approximate centre of LO31, decoded 2026-08-15 09:02 UTC. A transmitted locator is not proof of the operator's permanent location.

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	R4CBF S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-20 16:54	40m	- / -22	R3KHR	-4 / -	2	✓ Closing fragment
08-17 16:44	40m	- / -15	R3UCQ	-17 / -	2	✓ Closing fragment
08-16 18:28	80m	- / -17	R6ML	-7 / -	5	✓ Closing fragment
08-16 18:27	80m	- / -15	RA4FHO	-14 / -	2	✓ Closing fragment
08-15 13:31	20m	- / -	PD3LKN	-23 / -	5	Partial capture
08-11 17:22	80m	- / -10	UT7IF	-2 / -	2	✓ Closing fragment
08-07 18:10	80m	- / -	RG7O	+4 / -	2	Partial capture
08-07 18:03	80m	- / -9	RW3QW	+3 / -	4	✓ Closing fragment
08-07 17:12	40m	- / -16	RA3AJT	-14 / -	2	✓ Closing fragment
08-07 17:05	40m	- / -20	<...>	-16 / -	3	Partial capture
08-04 16:07	40m	- / -16	RD6OX	-7 / -	2	✓ Closing fragment
08-02 18:48	80m	-23 / -	SP8NR	- / -	2	Partial capture
08-02 18:39	80m	- / -	R4HLO	-15 / -	3	Partial capture
08-02 18:37	80m	- / -10	UA4HJ	+3 / -	2	Partial capture
08-02 18:33	80m	- / +6	R4HLO	-4 / -	2	Partial capture
08-02 18:10	80m	- / -21	R7CD	+12 / -	2	✓ Closing fragment
08-02 18:04	80m	- / -16	RX6DA	+10 / -	2	✓ Closing fragment
08-02 17:58	80m	- / -11	EW6CB	+3 / -	4	✓ Closing fragment
08-02 17:35	40m	- / -18	RZ6AKF	-8 / -	2	Partial capture
08-01 18:54	80m	- / -13	R4CI	-18 / -	7	✓ Closing fragment
08-01 18:34	40m	- / -14	R50RKZ	-9 / -	2	Partial capture
08-01 18:10	40m	- / -5	R4CI	-18 / -	2	✓ Closing fragment
08-01 17:56	40m	- / -12	R3DMX	-20 / -	2	✓ Closing fragment
07-31 18:25	80m	- / -20	RK6MC	+12 / -	3	✓ Closing fragment
07-31 18:21	80m	- / -18	UF3T	-10 / -	2	Partial capture
07-31 18:07	40m	- / -12	RV6AVU	-7 / -	2	✓ Closing fragment
07-31 17:57	40m	- / -	UA4AOC	-17 / -	2	✓ Closing fragment
07-31 17:52	40m	- / -19	UA3QNA	-10 / -	3	✓ Closing fragment
07-31 17:47	40m	- / -7	RN6LBT	-20 / -	4	✓ Closing fragment
07-30 18:00	80m	- / -16	RZ3ZY	-2 / -	2	✓ Closing fragment
07-30 16:22	40m	- / -1	UA3DPM	-17 / -	2	✓ Closing fragment
07-29 18:51	40m	- / -11	RN5AA	-9 / -	3	✓ Closing fragment
07-29 18:32	40m	- / -16	SQ9DJQ	-1 / -	3	Partial capture
07-29 16:28	40m	- / -7	UA6BCB	-18 / -	2	✓ Closing fragment
07-29 16:22	40m	- / -14	RK3ZB	-2 / -	2	✓ Closing fragment
07-29 16:05	40m	- / -	RU3X	-18 / -	2	Partial capture
07-29 15:49	40m	- / -	RA3ZGT	-9 / -	2	✓ Closing fragment
07-28 18:44	80m	- / -	R6ZEJ	+6 / -	4	Partial capture
07-28 18:43	80m	- / -7	R3RB	0 / -	2	✓ Closing fragment
07-28 18:42	80m	- / -11	RA9SJG	-8 / -	2	✓ Closing fragment
07-25 18:11	40m	- / -10	R2SN	-10 / -	3	✓ Closing fragment
07-25 12:49	20m	- / -22	EB3JT	-8 / -	2	Partial capture
07-25 09:48	20m	- / -3	IK4LZH	+4 / -	4	✓ Closing fragment
07-25 09:45	20m	- / -	DF3IS	-4 / -	2	Partial capture
07-25 09:15	20m	- / -17	OZ9FF	-14 / -	6	✓ Closing fragment
07-25 09:08	20m	- / -18	F4VVJ	-1 / -	3	Partial capture
07-22 17:07	40m	- / -	RA3ZGT	0 / -	5	Partial capture
07-22 14:14	20m	- / -16	R2PT	-15 / -	3	✓ Closing fragment
07-18 19:10	80m	- / -14	RT6Z	-6 / -	3	✓ Closing fragment
07-18 18:58	80m	- / -18	R2SDZ	+3 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
174915 -19 2126  R4CBF UA1WCF RR73
172615 -21 1815  R4CBF R4PFY LO45
143830 -16 2436  R4CBF R2SL -10
161700 -22 1433  R4CBF UD7G -16
170430 -14 2348  R4CBF RK3DWA/3 -20
170530 -16 2348  R4CBF <...> -20 (x3)
171215 -15 1380  R4CBF RA3AJT -16 (x2)
164430 -19 1850  R4CBF R3UCQ -15 (x2)
165415  -5 1539  R4CBF R3KHR -22 (x2)
171245 -11 2296  R4CBF R1QF -20

80m

UTC    dB Audio  Message
180400  +4 1296  R4CBF RW3QW RR73 (x2)
181030  +3 2390  R4CBF RG7O KN88 (x2)
181800  -5 1696  R4CBF R4CJN 73
172200  -1 1519  R4CBF UT7IF -10 (x2)
182715 -15 2534  R4CBF RA4FHO -15 (x2)
182845 -10 1481  R4CBF R6ML LN17 (x5)
183830  -6 2621  R4CBF RG7O KN88

20m

UTC    dB Audio  Message
094915  +1  463  R4CBF IK4LZH R-03 (x2)
100030  -3 1367  R4CBF HA1BF RR73
124900  -7 1591  R4CBF EB3JT JN01 (x2)
090215 -20 1598  R6AR R4CBF LO31
090245 -23 1599  R1BED R4CBF LO31
132030 -21 1605  SN4K R4CBF -05
133145 -21 1603  R4CBF PD3LKN JO22 (x5)
071530 -14 1026  R4CBF UA3SCU RR73
073600  -6  513  R4CBF RA3P -15

10m

UTC    dB Audio  Message
072900  +0 2398  R4CBF UE7DR -07 (x2)
073600  -4 2767  R4CBF RA7T -17
074100  -3 2395  R4CBF UE7DR RR73
075130  -9  617  R4CBF R6TA LN13 (x5)
080700 -11  237  R4CBF R6LKG LN07

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.