RA4CA — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving RA4CA, decoded by SO8OO in southeastern Poland. 455 related FT8 messages, observed on 160m, 80m, 40m, 20m, 10m, across 69 UTC dates. Heard between 2026-05-25 and 2026-08-23.

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

455

Related messages

CQ messages

UTC dates heard

-8 dB

Mean decoder S/N

Bands

80m 20m 40m 10m 160m

First seen: 2026-05-25
Last seen: 2026-08-23 16:38 UTC

Frequent QSO partners observed at SO8OO

Stations RA4CA worked most often, as logged from our receiver:

R9CS/P · European Russia ×5 RA4HL · European Russia ×3 R6ZEJ · European Russia ×2 R50RKZ · European Russia ×2 US1EA · Ukraine ×2 R2AKN · European Russia ×2 R6OIZ · European Russia ×2 RT2P · European Russia ×2 UE6RU · European Russia ×2 R6FMK · European Russia ×2 R95WTA · Asiatic Russia ×2 UA9ZZ · Asiatic Russia ×2

Activity Heatmap

Locator transmitted by RA4CA

Approximate centre of LO31, decoded 2026-08-23 17:40 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	RA4CA S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 17:37	80m	-2 / -	R1530IG	- / 0	7	Partial capture
08-22 23:25	80m	-9 / -11	II7MGML	+1 / -19	4	Partial capture
08-21 19:03	80m	-6 / 0	UF4S/P	-11 / +2	14	✓ Full exchange observed
08-21 18:46	80m	-14 / -	UF4S/P	- / -	9	Partial capture
08-21 06:40	20m	-9 / -11	US1EA	-5 / -7	4	✓ Full exchange observed
08-21 06:08	20m	- / +7	II7MGML	0 / -	2	Partial capture
08-21 06:05	20m	-16 / -	<...>	- / -	2	Partial capture
08-21 06:01	20m	- / -	EA2DDE	-2 / -	2	Partial capture
08-20 14:57	20m	-10 / -	R9FDE/P	- / -	2	Partial capture
08-20 08:14	20m	- / -14	R6DOB/M	+1 / -	3	Partial capture
08-20 07:24	20m	-8 / -	<...>	- / -7	5	Partial capture
08-20 05:32	20m	+1 / -	R3PLN/P	- / -7	6	✓ Closing fragment
08-20 05:29	20m	-2 / -	<...>	- / -14	4	Partial capture
08-18 14:12	10m	- / -14	DK7UY	-9 / -	3	✓ Closing fragment
08-17 20:34	160m	-12 / -	DB100FT	- / -	2	Partial capture
08-16 18:34	160m	-11 / -8	RA6ATZ	-17 / +2	5	✓ Full exchange observed
08-16 18:00	80m	-10 / -	R9CS/P	-2 / -1	4	✓ Full exchange observed
08-16 15:05	20m	-4 / -	MD0CCE	- / -	3	Partial capture
08-16 15:04	20m	-5 / -	EW4DX	- / -3	2	Partial capture
08-15 16:00	40m	-16 / -	RC0AT/P	- / -6	3	Partial capture
08-15 15:54	40m	-13 / -	RC0AT/P	- / -	4	Partial capture
08-14 20:50	160m	-2 / -7	R4NBV	-18 / +5	5	✓ Full exchange observed
08-14 20:40	80m	-5 / +8	R3WDW/P	-8 / -20	5	✓ Full exchange observed
08-14 20:31	160m	-10 / -	<...>	- / +3	2	Partial capture
08-14 18:23	80m	-12 / -	<...>	- / -	3	Partial capture
08-14 10:39	10m	- / -11	<...>	-10 / -	2	Partial capture
08-13 20:50	80m	-6 / -	HG25CCS	- / -	4	Partial capture
08-13 20:41	160m	+2 / -	<...>	- / +2	2	Partial capture
08-13 19:27	80m	-15 / -2	R4AFR	-16 / +1	3	✓ Full exchange observed
08-12 20:38	80m	-11 / -	JE6WOQ	- / -16	5	✓ Closing fragment
08-12 16:26	80m	-15 / -	RI0FA	- / -2	5	✓ Closing fragment
08-11 18:31	10m	-17 / -	UD6AWU	- / -8	2	Partial capture
08-11 17:56	10m	- / -10	RC6OX	+6 / -	2	✓ Closing fragment
08-11 15:55	20m	-14 / -	<...>	- / -8	2	Partial capture
08-11 05:43	10m	- / -11	EA6BH	0 / -	2	Partial capture
08-10 20:57	80m	-9 / +3	RV3X	0 / +8	6	✓ Full exchange observed
08-10 20:54	80m	-6 / -	RA6FYL	- / -	2	Partial capture
08-10 20:50	80m	-4 / -6	TF4M	-15 / -	6	Partial capture
08-10 19:48	80m	-9 / -	JA1ILA	- / -9	2	Partial capture
08-10 19:47	80m	-10 / -	UB8CQC/P	- / -	3	Partial capture
08-10 19:31	80m	- / +3	RU3NCW	-4 / -	2	✓ Closing fragment
08-10 19:08	80m	-12 / -	R50RKZ	- / -	3	Partial capture
08-08 18:36	40m	- / -6	IK6GPZ	-11 / -	7	✓ Closing fragment
08-07 18:44	80m	+1 / -	<...>	- / -	4	Partial capture
08-07 18:12	80m	-1 / -	<...>	- / -	27	Partial capture
08-07 17:43	80m	-13 / -	AP5ARS	- / -	16	Partial capture
08-07 01:13	80m	-2 / -4	RA3PGR	-4 / 0	5	✓ Full exchange observed
08-07 01:08	80m	-4 / 0	UB8F	+1 / +9	5	✓ Full exchange observed
08-07 00:57	40m	-10 / -	T46W	- / -	3	Partial capture
08-07 00:50	80m	-8 / 0	RA3PGR	-8 / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
190915  -5  939  UF4S/P RA4CA R-13
191100 +10  869  RA4CA RR73; PE1NPS <...> -16
232515  -8 1014  II7MGML RA4CA LO31 (x2)
232600  +1 1001  RA4CA II7MGML -11
232615 -10  908  II7MGML RA4CA R-19
173730  +1  888  R1530IG RA4CA LO31 (x7)
183845  +1 1209  RA4CA II7MGXX -12
183900  -8  888  II7MGBT RA4CA R-12

20m

UTC    dB Audio  Message
082115  -2 1096  <...> RA4CA R-07
145745 -12 1070  R9FDE/P RA4CA LO31 (x2)
060100  -2 1287  RA4CA EA2DDE IN92 (x2)
060545 -19 1268  <...> RA4CA LO31 (x2)
060830  +2 1069  RA4CA II7MGML +07 (x2)
060915 -14 1269  <...> RA4CA R-10
064015 -14  883  UA9YHA RA4CA R-07
064030  -2  884  RA4CA US1EA KN78
064045  -9  883  US1EA RA4CA -07
064100  -2  884  RA4CA US1EA R-11 (x2)

160m

UTC    dB Audio  Message
205045  -3  934  R4NBV RA4CA LO31
205100 -17 1947  RA4CA R4NBV -07
205115  +0  934  R4NBV RA4CA R+05
205130 -19 1948  RA4CA R4NBV RR73
205145  -3  934  R4NBV RA4CA 73
183415 -10  934  RA6ATZ RA4CA LO31
183430 -17 1595  RA4CA RA6ATZ -08
183445 -12  934  RA6ATZ RA4CA R+02
183500 -17 1595  RA4CA RA6ATZ RR73
183515 -12  934  RA6ATZ RA4CA 73
203415 -12 1356  DB100FT RA4CA LO31 (x2)
203715 -18 1356  <R3DFE/M> RA4CA LO31
203845 -12 1356  <...> RA4CA LO31 (x2)

10m

UTC    dB Audio  Message
054345  +0  986  RA4CA EA6BH -11
075845  -8 2777  RA4CA F4IDN IN97
080045 -18  938  RA4CA RU3NCW -05
080245 -21 1394  RA4CA F4IDN IN97
175615  +6 2566  RA4CA RC6OX -10 (x2)
183145 -18  939  UD6AWU RA4CA LO31 (x2)
103900  -9 1028  RA4CA <...> -11 (x2)
193745 -18 1044  <...> RA4CA LO31
055315 -17 1022  RA4CA R7TJ -07
141230  -6 2559  RA4CA DK7UY JO44 (x3)

40m

UTC    dB Audio  Message
182115 -19 1029  R0JBH/P RA4CA LO31
183645 -10 1419  RA4CA IK6GPZ JN62 (x7)
155430 -17 1085  RC0AT/P RA4CA LO31 (x7)

Decoder S/N history by band

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