RU4I — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Locator transmitted in a decoded message: LO43

Receiver-side FT8 activity involving RU4I, decoded by SO8OO in southeastern Poland. 163 related FT8 messages, 5 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 22 UTC dates. Heard between 2026-05-23 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

163

Related messages

CQ messages

UTC dates heard

-9 dB

Mean decoder S/N

Bands

80m 20m 40m 10m 160m

First seen: 2026-05-23
Last seen: 2026-08-20 11:37 UTC

Frequent QSO partners observed at SO8OO

Stations RU4I worked most often, as logged from our receiver:

R50RKZ · European Russia ×3 R3ZBY · European Russia ×2 R95WTA · European Russia RN3H · European Russia UA9UFJ · Asiatic Russia R4FBJ · European Russia R6SS · European Russia RK3DSW · European Russia BA6IM · China UA1AQC · European Russia R6ZAJ · European Russia 7Q5MP · Malawi

Activity Heatmap

Locator transmitted by RU4I

Approximate centre of LO43, decoded 2026-07-31 02:21 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	RU4I S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-20 14:06	20m	+16 / -	PD0HLA	- / -9	2	✓ Closing fragment
08-20 14:03	20m	+13 / -	<...>	- / -15	4	Partial capture
08-20 14:00	20m	+12 / -	R0SV/P	- / -15	3	Partial capture
08-20 13:35	20m	+10 / +6	F4HSB	-9 / -16	8	Partial capture
08-20 13:34	20m	+6 / -	BD6IIC	- / -9	2	✓ Closing fragment
08-20 13:33	20m	+5 / -	R5AJ	- / -13	3	✓ Closing fragment
08-20 13:31	20m	+7 / -	OY1HJ	- / -10	3	✓ Closing fragment
08-20 13:28	20m	+7 / -	TK4QP	- / -4	3	Partial capture
08-20 13:27	20m	+9 / -	SP6AMI	- / -	2	✓ Closing fragment
08-20 13:24	20m	+2 / -	UA3WDO	- / -13	4	✓ Closing fragment
08-20 13:17	20m	-6 / -	JQ3DUE	- / -6	2	✓ Closing fragment
08-20 05:55	20m	+11 / -	UA3VVA	- / -11	5	✓ Closing fragment
08-20 05:54	20m	+6 / -	UB6OAK	- / -9	3	Partial capture
08-20 05:53	20m	+13 / -	R3PLN/P	- / -14	2	Partial capture
08-20 05:50	20m	+7 / +2	UI6O	-13 / -2	3	✓ Full exchange observed
08-20 05:49	20m	+8 / +2	RC6OG	-10 / +4	4	✓ Full exchange observed
08-20 05:47	20m	+10 / -	RC6OT	- / -14	3	✓ Closing fragment
08-19 18:50	160m	-21 / -	R3DFE/M	- / -17	4	Partial capture
08-19 14:16	20m	+5 / -	R6DOB/M	- / -9	3	Partial capture
08-19 14:10	20m	-2 / -	R3DFE/M	- / -17	2	Partial capture
08-19 14:08	20m	-7 / -	UA1AQC	- / -12	2	✓ Closing fragment
08-19 14:04	20m	-1 / -	<...>	- / -16	2	Partial capture
08-17 14:07	20m	+3 / -	OZ9FF	- / -17	3	✓ Closing fragment
08-17 14:06	20m	0 / -13	R3YAU	-8 / +1	6	✓ Full exchange observed
08-17 14:04	20m	+1 / -	ON3PVO	- / -7	3	✓ Closing fragment
08-17 12:26	20m	-6 / -	YO9CX	- / -9	2	✓ Closing fragment
08-17 12:23	20m	- / -20	MM0KQC	-20 / -	2	Partial capture
08-16 13:37	20m	-8 / -	UA9UFJ	- / -20	2	✓ Closing fragment
08-16 13:36	20m	-8 / -	UA3SNB	- / -13	2	Partial capture
08-16 13:29	20m	-10 / -	UB8AHK	- / -4	2	✓ Closing fragment
08-14 19:57	160m	-10 / -17	EU3A	+12 / +1	5	Partial capture
08-14 19:55	160m	-8 / -	RD9FC	- / -6	2	✓ Closing fragment
08-14 19:53	160m	-12 / -	R3TIT	- / -16	5	✓ Closing fragment
08-14 19:51	160m	-20 / -	UA3NFI	- / +1	2	✓ Closing fragment
08-14 19:48	160m	-15 / +10	R50RKZ	+16 / +6	6	✓ Full exchange observed
08-14 19:47	160m	-8 / -	R8CC	- / -2	2	✓ Closing fragment
08-14 19:46	160m	-6 / -	RO2E/M	- / -2	2	Partial capture
08-14 19:45	160m	-11 / -	UA3NFI	- / -5	2	Partial capture
08-14 19:40	160m	-10 / -	RX3T	-13 / -2	4	✓ Closing observed
08-14 19:39	160m	-13 / -	RA3TOS	- / -11	2	✓ Closing fragment
08-14 19:24	80m	-1 / -2	R6OG	+14 / +1	3	✓ Full exchange observed
08-14 19:22	80m	-11 / -7	UA3LM	+14 / -1	5	✓ Full exchange observed
08-14 19:21	80m	-7 / -3	RN3YN	-9 / -13	3	✓ Full exchange observed
08-14 19:19	80m	+3 / -	R50RKZ	+11 / -	3	✓ Closing observed
08-14 19:10	160m	-16 / -4	RM5F	-15 / +1	5	✓ Full exchange observed
08-14 19:08	160m	-16 / -	R2UZ/P	- / -3	2	Partial capture
08-14 19:05	160m	-17 / -	R2UZ/P	- / -3	2	Partial capture
08-14 19:03	160m	-16 / -	RO2E/M	- / -13	3	Partial capture
08-14 18:16	80m	-5 / -	R6DOB/7	- / -4	8	Partial capture
08-12 08:31	10m	- / -8	R6DWD	-3 / -	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
133600  +9 1334  F4HSB RU4I -16
133615  -9 1920  RU4I F4HSB R+06
133630 +11 1334  F4HSB RU4I -16
133645  -7 1920  RU4I F4HSB R+06 (x3)
140045 +11 2664  R0SV/P RU4I -15 (x3)
140345 +10 2752  <...> RU4I -15 (x4)
140645 +11 2753  PD0HLA RU4I R-09 (x2)

160m

UTC    dB Audio  Message
195415 -10  816  R3TIT RU4I -16 (x3)
195545  -8  816  RD9FC RU4I -06 (x2)
195730 -11  945  EU3A RU4I +01 (x2)
195845 +12 1193  RU4I EU3A R-17 (x3)
185045 -22 1428  R3DFE/M RU4I -17 (x4)
185315 -22 1428  UD8S RU4I R+00

40m

UTC    dB Audio  Message
022100 -12  578  8S7DL RU4I LO43 (x2)
171945 -19 1980  R0AJQ/P RU4I -14
165415 -15 1086  UB8CQC/P RU4I -13
165530 -23 1343  RU4I R2BIU R+00
165800 -18 1087  R4DB RU4I +05
165830 -19 1087  RC0AT RU4I -06
170100 -19 1087  UA4QK RU4I -15
170115 -12  841  RU4I RX6CC R+00
170315 -16  691  RU4I RC6OD R+00
170445 -21 1088  RA6AR RU4I -05
170615 -15 1088  UB8CQC/P RU4I -07
140300 -20 1995  RU4I R50RKZ R+16
145430 -10  888  RU4I HG3FMZ JN96
145530 -22 1737  RU4I RD7O R+02

80m

UTC    dB Audio  Message
191930 +10 2237  RU4I R50RKZ R+11
191945  +3 2130  R50RKZ RU4I RR73
192000 +12 2237  RU4I R50RKZ RR73
192030 -14 1531  RU4I R1WCK R-09
192115  -5 2130  RN3YN RU4I -13
192130  -9  664  RU4I RN3YN R-03
192145  -9 2130  RN3YN RU4I RR73
192215 -13 2130  UA3LM RU4I -01 (x2)
192300 +15 1214  RU4I UA3LM R-07
192315  -7 2130  UA3LM RU4I RR73
192330 +13 1214  RU4I UA3LM 73
192445  -1 1045  R6OG RU4I +01
192500 +13  442  RU4I R6OG R-02 (x2)

10m

UTC    dB Audio  Message
080815  +0 2841  RU4I RV3ZK R+02 (x2)
082930  -8  733  RU4I RZ6LY 73
083230 -11 1201  RU4I RA6BX R-12 (x2)
085100 -11  763  RU4I PD0OKP JO32 (x2)
085230 -12  880  RU4I <...> +05
143845 -11  735  RZ1AS RU4I -05
144230 -12  735  LU2MET RU4I RR73
144330 -13  735  IX1CVF RU4I RR73
144430 -11  735  R4FCK RU4I -11
144545 -10 1007  RU4I IZ4JMA R+17
083145  -3  746  RU4I R6DWD -08 (x2)

Decoder S/N history by band

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