R4CBT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO22

Receiver-side FT8 activity involving R4CBT, decoded by SO8OO in southeastern Poland. 153 related FT8 messages, 17 CQ messages, observed on 40m, 20m, 10m, across 17 UTC dates. Heard between 2026-05-02 and 2026-07-20.

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

153

Related messages

CQ messages

UTC dates heard

-7 dB

Mean decoder S/N

Bands

20m 40m 10m

First seen: 2026-05-02
Last seen: 2026-07-20 16:12 UTC

Frequent QSO partners observed at SO8OO

Stations R4CBT worked most often, as logged from our receiver:

PD7RF · Netherlands JH5AVM · Japan R6ML · European Russia SV1EAG · Greece R2EC · European Russia DJ7XY · Fed. Rep. of Germany HA2AI · Hungary BI4MPH · China LX1NO · Luxembourg BH5HIE · China RK3AQ · European Russia F4CWQ · France

Activity Heatmap

Locator transmitted by R4CBT

Approximate centre of LO22, decoded 2026-07-12 17:37 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	R4CBT S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-20 18:11	20m	-6 / -8	EW1MN	-5 / -3	3	✓ Full exchange observed
07-20 18:08	20m	+4 / -	YB7FII	- / -15	3	✓ Closing fragment
07-20 18:06	20m	+4 / -	JG3LGD	- / -11	2	Partial capture
07-20 18:04	20m	0 / +2	DL6LAG	-12 / -	2	✓ Closing observed
07-20 18:01	20m	+1 / -	BI4MPH	- / -15	3	✓ Closing fragment
07-20 18:01	20m	0 / +3	IK4RVY	-12 / -	7	✓ Closing observed
07-20 17:27	20m	-4 / -	RL2F	- / -5	2	✓ Closing fragment
07-20 17:16	20m	-8 / -	BI4AEL	- / -14	2	✓ Closing fragment
07-20 17:14	20m	+1 / -4	F4CWQ	-5 / -14	5	✓ Full exchange observed
07-20 17:12	20m	-20 / -	BH4GUO	- / -12	2	Partial capture
07-20 17:11	20m	-16 / -	M9WHQ	- / -12	2	✓ Closing fragment
07-20 17:09	20m	-8 / -	UA0LQE	- / -14	2	Partial capture
07-20 17:05	20m	- / -10	IK4TVP	-19 / -	2	Partial capture
07-20 17:03	20m	-8 / -	DJ7XY	- / -9	2	✓ Closing fragment
07-19 16:35	20m	-8 / -	JH5AVM	- / -11	2	✓ Closing fragment
07-12 17:46	10m	- / -	DN9AD	-18 / -	4	Partial capture
07-12 17:44	10m	- / -13	R2EC	-8 / -	2	Partial capture
07-12 17:36	10m	- / -14	RA6MQ	-18 / -	3	Partial capture
07-11 18:07	40m	- / -13	RK6MC	-13 / -	4	✓ Closing fragment
07-11 18:05	40m	- / -4	R2EC	-6 / -	3	✓ Closing fragment
07-11 12:56	20m	-21 / -	BG5BNW	- / -11	2	✓ Closing fragment
07-11 11:56	20m	-18 / +1	PD7RF	-4 / -16	4	✓ Full exchange observed
07-10 18:02	20m	- / +8	LX1NO	-11 / -	5	✓ Closing fragment
07-08 17:17	40m	- / -3	RK3AQ	-12 / -	2	✓ Closing fragment
07-08 16:46	40m	- / -	R6ML	-12 / -	4	✓ Closing fragment
07-08 16:42	40m	- / -9	R6DYK	-16 / -	2	✓ Closing fragment
06-04 18:08	20m	- / -17	SV1EAG	+8 / -	2	✓ Closing fragment
06-04 18:07	20m	- / -8	BG4OOO	-14 / -	2	Partial capture
06-04 18:07	20m	- / -11	EA8UP	+5 / -	2	✓ Closing fragment
06-04 18:02	20m	- / -12	BG2ATH	-12 / -	2	✓ Closing fragment
05-27 17:47	20m	+16 / -	BH3FZG	- / -13	2	✓ Closing fragment
05-27 17:46	20m	+12 / -	BH4THI	- / -13	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
180400 -11 1532  R4CBT IK4RVY 73
180430 -12 1389  R4CBT DL6LAG R+02
180445  +0 1388  DL6LAG R4CBT RR73
180600 +11  667  CR7BRV R4CBT -10
180630  +3  477  JG3LGD R4CBT -11
180715  +7 2475  HA2AI R4CBT RR73
180800  +4 2453  JG3LGD R4CBT -08
180845  +1 2453  YB7FII R4CBT -15 (x3)
181130  -3 2378  EW1MN R4CBT -03
181245  -5 2378  R4CBT EW1MN R-08
181300  -8 2377  EW1MN R4CBT RR73
182700  -3 1812  JA8TRT R4CBT -09
182800  -5 2157  TA7TET R4CBT -07

10m

UTC    dB Audio  Message
173645 -15 2317  R4CBT RA6MQ -14
173700 -24 1751  CQ R4CBT LO22                         a1
173715 -20 2225  R4CBT RA6MQ -14 (x2)
173745  -8  582  R4CBT R6KA -07 (x2)
174400  -8 2415  R4CBT R2EC KO82 (x2)
174645 -16 1824  R4CBT DN9AD JO52 (x3)
174800 -23 1426  MM8WXA R4CBT -15
174815 -21 1824  R4CBT DN9AD JO52 (x2)
121545 -20 2274  R4CBT R7KM RR73

40m

UTC    dB Audio  Message
164700 -15  754  R4CBT R6ML LN17 (x3)
171700 -14 1537  R4CBT R7NO -10
171730 -13 2401  R4CBT RK3AQ R-03 (x2)
180415 -12 1443  R4CBT RK6MC KN97
180545  -5 2553  R4CBT R2EC KO82 (x3)
180745 -13  837  R4CBT R3MBV 73
180745 -16 1848  R4CBT RK6MC KN97 (x4)

Decoder S/N history by band

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