RA3SI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO04

Receiver-side FT8 activity involving RA3SI, decoded by SO8OO in southeastern Poland. 570 related FT8 messages, 156 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 32 UTC dates. Heard between 2026-05-19 and 2026-08-17.

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

570

Related messages

156

CQ messages

UTC dates heard

-10 dB

Mean decoder S/N

Bands

80m 20m 40m 10m 160m

First seen: 2026-05-19
Last seen: 2026-08-17 16:53 UTC

Frequent QSO partners observed at SO8OO

Stations RA3SI worked most often, as logged from our receiver:

UB0SMX/P · Asiatic Russia ×3 R95WTA · European Russia ×2 RU3OW · European Russia ×2 VU2FR · India ×2 RI0SP · European Russia ×2 DK5WL · Fed. Rep. of Germany TJ1GD/P · Cameroon UE7DR · European Russia IV3FSG · Italy DK6AH · Fed. Rep. of Germany ON1DGN · Belgium UA3POG · European Russia

Activity Heatmap

Locator transmitted by RA3SI

Approximate centre of LO04, decoded 2026-08-17 19:11 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	RA3SI S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-17 19:10	20m	0 / -	EA8UP	- / -	2	Partial capture
08-17 18:52	80m	- / -	UB3LBU	-8 / -	2	Partial capture
08-17 18:50	80m	-4 / -	RA3LCI	-20 / +7	4	✓ Closing observed
08-17 18:47	80m	-5 / -	<...>	- / -6	3	Partial capture
08-17 05:25	20m	-10 / -	<...>	- / +6	5	Partial capture
08-16 18:20	80m	-13 / -11	DL7ANC/LH	-1 / -24	18	Partial capture
08-16 18:15	40m	-17 / -	<...>	- / -9	3	Partial capture
08-16 17:39	40m	- / -12	RW3ZC	-8 / -	2	✓ Closing fragment
08-16 17:16	40m	-17 / -8	DB8BT	-22 / -17	5	✓ Full exchange observed
08-16 17:11	40m	- / -	R2APC	-16 / -	2	Partial capture
08-16 17:06	40m	- / -	UC6D	-14 / -	2	Partial capture
08-16 17:03	40m	-18 / -	UA9FMT	- / +7	2	✓ Closing fragment
08-16 17:01	40m	-17 / -	R4HHN	- / -	3	✓ Closing fragment
08-16 16:50	40m	- / +5	R7LC	-14 / -	2	✓ Closing fragment
08-16 16:25	20m	- / -10	DK9NP	-17 / -	4	✓ Closing fragment
08-16 16:22	20m	-20 / -	F4BYA/P	- / -9	2	Partial capture
08-16 16:09	20m	-20 / -13	PD3LKN	-22 / -10	5	✓ Full exchange observed
08-16 16:07	20m	-20 / -	PA1GLD	- / -4	3	✓ Closing fragment
08-16 16:05	20m	- / -10	PD4DX	-11 / -	4	✓ Closing fragment
08-16 15:50	20m	- / -	PA3EMR	-17 / -	2	✓ Closing fragment
08-16 15:45	20m	-21 / +4	ON1DGN	-18 / -11	4	✓ Full exchange observed
08-16 15:16	20m	- / -8	RV9CX	-12 / -	2	✓ Closing fragment
08-15 19:33	80m	+1 / -	RC0AT/P	- / -11	3	Partial capture
08-15 19:17	80m	-12 / -	<...>	- / -7	3	Partial capture
08-15 19:12	80m	-4 / +4	R1BED	-12 / -	4	✓ Closing observed
08-15 19:10	80m	-2 / -	R50RKZ	+4 / -	4	✓ Closing observed
08-12 18:38	80m	-4 / -	RV3SBS/P	- / +8	3	✓ Closing fragment
08-09 18:29	80m	-12 / -16	IV3FSG	+6 / -9	4	✓ Full exchange observed
08-09 18:25	80m	-10 / +3	R2SBI	-4 / -	5	✓ Full exchange observed
08-09 18:23	80m	-10 / -	UB8CQC/P	- / -11	3	✓ Closing fragment
08-09 18:21	80m	-10 / +9	R3GO	+2 / -	4	✓ Full exchange observed
08-09 18:18	80m	-10 / -	R8LDJ	- / -17	6	✓ Closing fragment
08-09 18:14	80m	-8 / -6	RC6OD	+12 / -	3	✓ Closing observed
08-09 18:11	80m	-10 / +8	R2HB	+1 / -	5	✓ Full exchange observed
08-09 18:09	80m	-9 / -	RY4D	+1 / -	5	✓ Full exchange observed
08-09 18:06	80m	-6 / -5	UA9FFV	-11 / +5	5	✓ Full exchange observed
08-09 18:05	80m	-9 / +3	R4SCQ	-18 / +8	5	✓ Full exchange observed
08-09 17:00	20m	-23 / -	<...>	- / -	3	Partial capture
08-09 16:58	20m	- / -8	IK8TPB	-9 / -	3	Partial capture
08-08 17:17	20m	- / -	S58S	-11 / -	3	Partial capture
08-08 17:15	20m	-2 / -	BH2WTV	- / 0	2	✓ Closing fragment
08-08 17:12	20m	-6 / -10	F5OYA/P	-19 / -3	6	✓ Full exchange observed
08-08 17:08	20m	-2 / -	BG5JGG	- / -4	2	✓ Closing fragment
08-08 17:07	20m	+1 / -	UA0LQE	- / +2	2	✓ Closing fragment
08-08 16:56	20m	+6 / -	<...>	- / -	10	Partial capture
08-01 19:27	20m	+6 / -	ZX3P	- / -	12	Partial capture
08-01 19:23	20m	+9 / -	JA1HOX	- / +1	3	✓ Closing fragment
08-01 19:22	20m	+8 / -	BI1HJR	- / -9	2	✓ Closing fragment
08-01 19:20	20m	+10 / -	RA0ZIH	- / +10	2	✓ Closing fragment
08-01 19:18	20m	+6 / -	PY2GZ	- / -1	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
163730 -24 1421  CQ RA3SI LO04 (x7)
052530  -6 1741  <...> RA3SI LO04 (x4)
052815 -16 2091  RA3SI RA0QK/8 -01
052830  -9 1933  <...> RA3SI R+06
191045  +2  851  EA8UP RA3SI LO04 (x2)

80m

UTC    dB Audio  Message
182615 -12 1430  DL7ANC/LH RA3SI R-24 (x4)
184715  -7  790  <...> RA3SI LO04 (x2)
184800  -6 1420  RA3SI LY/DG5KCB -03
184815  -3  790  <...> RA3SI R-06
184945  -4  790  RQ3D RA3SI RR73
185045  -1  790  RA3LCI RA3SI LO04 (x2)
185130 -20 1990  RA3SI RA3LCI RR73
185145  -5  790  RA3LCI RA3SI 73
185230  -7  996  RA3SI UB3LBU KO63 (x2)

40m

UTC    dB Audio  Message
172330 -20 1801  CQ RA3SI LO04 (x3)
172730 -24 1801  R2APC RA3SI +10
172830 -22 1801  RW3ZC RA3SI R-14
173330 -23 1800  CQ RA3SI LO04                         a1
173930 -10 1801  RA3SI UC6D KN95
173930  -8 2628  RA3SI RW3ZC -12 (x2)
174230 -19 1540  RA3SI R3KHR RR73
174700 -11  788  RA3SI DL7ANC/LH -13
181230  -7  896  RA3SI R0QBB/3 -07
181500 -18 1801  <...> RA3SI LO04 (x3)

160m

UTC    dB Audio  Message
203915  -7 1120  RA3SI UI5A R-01
203930  -9 2160  UI5A RA3SI RR73
203945  -8 1120  RA3SI UI5A 73
204100 -11 2160  UI5A RA3SI LO04
204130 -10 2160  <YR50NADIA> RA3SI LO04
204230 -10 2160  RA3TOS RA3SI R-13 (x2)
204315  -2 1896  RA3SI DK5WL JN39 (x2)
204400  -7 2160  DK5WL RA3SI -07
204415  -3 1896  RA3SI DK5WL R-17
204430 -14 2160  DK5WL RA3SI RR73
204445  -5 1896  RA3SI DK5WL 73
201145 -15 2030  RA3SI R2LAF/P -20 (x2)

10m

UTC    dB Audio  Message
083745 -12 1831  RA3SI E70SZ JN84 (x3)
084115  -5  552  RA3SI F5TMJ JN13
084130 -23 1829  CQ RA3SI LO04
084145  -2  552  RA3SI F5TMJ JN13
084200 -24 1829  F5TMJ RA3SI -07
084215  -1  552  RA3SI F5TMJ R-16 (x2)
084715  +2 1830  RA3SI F4PCM JN23 (x3)
152330  +2 1771  RA3SI R7DX KN84 (x3)

Decoder S/N history by band

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