RU3XX — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO84

Receiver-side FT8 activity involving RU3XX, decoded by SO8OO in southeastern Poland. 209 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-10-27.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 209 FT8 messages attributed to RU3XX as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (31%), followed by 80 m (29%) and 20 m (22%). Most decodes (91%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

209

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

160m · 38 80m · 60 40m · 65 20m · 45 10m · 1

First attributed message: 2026-06-12
Last attributed message: 2026-10-27 18:23 UTC

Observed FT8 message patterns

Attributed sample: 209 messages
Active dates: 11 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -19 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 44, moderate (-15 to -9 dB) 96, strong (≥ -8 dB) 69.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with RU3XX in decoded directed-looking exchanges:

R2DYC · European Russia ×2 PI4DX · Netherlands R3MDR · European Russia RA3LCI · European Russia RA3RDN · European Russia RA4Y · European Russia RA6FC · European Russia RA6MQ/P · European Russia RC1TF · European Russia RY3K · European Russia BU2FW · Taiwan D2ACE · Angola

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to RU3XX

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: KO84 · 6 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,150 km (approx.)
Last such locator decoded: 2026-08-09 19:34 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

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	RU3XX S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-27 18:19	160m	-18 / -	RA6FC	- / -9	2	✓ Closing fragment
10-27 18:16	160m	- / -15	PI4DX	0 / -	2	✓ Closing fragment
10-27 18:15	160m	-22 / -3	RA6MQ/P	-7 / +2	3	✓ Full exchange observed
10-27 17:47	40m	-10 / -	ZL1VAH	- / -18	4	Partial capture
10-27 17:46	40m	-13 / -	VJ6X	- / -19	2	Partial capture
10-23 16:32	40m	-8 / -	R4CR	- / -12	2	✓ Closing fragment
10-23 16:31	40m	-8 / -	RT3K	- / -5	2	✓ Closing fragment
10-23 16:30	40m	-10 / -	EP2AES	- / -21	2	✓ Closing fragment
08-30 13:38	40m	-12 / +2	UA3XFO	-20 / +8	4	✓ Full exchange observed
08-27 19:33	160m	-14 / +9	RA4Y	-13 / -1	4	✓ Full exchange observed
08-27 19:15	40m	0 / -	RZ5D	-7 / -	2	✓ Closing observed
08-27 19:14	40m	-11 / -6	EW8DG	-9 / -10	3	✓ Full exchange observed
08-27 19:09	40m	-1 / -	EA9AA	- / -16	2	Partial capture
08-27 18:41	40m	-8 / -	RX3VF	- / -5	2	✓ Closing fragment
08-27 18:38	40m	-10 / -13	UK8OM	0 / -2	7	✓ Full exchange observed
08-25 17:51	160m	-18 / +1	RC1TF	-14 / -11	4	✓ Full exchange observed
08-25 17:49	160m	-18 / -	<...>	- / 0	2	Partial capture
08-25 17:46	80m	-15 / -1	RD6OX	+4 / -10	4	✓ Full exchange observed
08-25 17:43	80m	-10 / -3	OK1FRG	+13 / -15	5	✓ Full exchange observed
08-25 17:42	80m	-12 / +2	R7LB	-6 / -1	5	✓ Full exchange observed
08-25 17:40	80m	-14 / -11	RA6YDX	-4 / -13	4	✓ Full exchange observed
08-25 17:37	80m	-9 / -	UA3IDQ	- / -20	4	✓ Closing fragment
08-25 17:33	80m	-6 / -7	R6ML	-9 / -8	5	✓ Full exchange observed
08-25 17:32	80m	- / -10	R4HHN	-13 / -	2	Partial capture
08-25 17:31	80m	- / -7	UA3ZQN	0 / -	3	✓ Closing fragment
08-25 17:30	80m	-1 / -10	RN6AK	+2 / -	2	✓ Closing observed
08-25 15:40	40m	- / -11	F4FSY	-24 / -	2	Partial capture
08-25 15:39	40m	-6 / -	UN0PA	- / -5	2	✓ Closing fragment
08-25 15:37	40m	-10 / -	ZL1RPC/P	- / -21	2	Partial capture
08-25 15:36	40m	-12 / -1	LZ2SPD	-6 / -4	5	✓ Full exchange observed
08-25 15:33	40m	-12 / +1	RU5X	-4 / +4	4	✓ Full exchange observed
08-25 15:31	40m	-9 / +2	RC5Z	-6 / -	3	✓ Closing observed
08-12 19:15	80m	-9 / -3	R2FEA	+11 / -6	5	✓ Full exchange observed
08-12 19:13	80m	-13 / -	LX1NO	- / -16	3	Partial capture
08-12 17:55	20m	-9 / -	R6DJR	- / -9	2	✓ Closing fragment
08-12 17:53	20m	-9 / -	BU2FW	- / -21	2	✓ Closing fragment
08-12 17:52	20m	-12 / -	BI4XDT	- / -8	2	Partial capture
08-12 17:51	20m	-15 / -	F5IXN	- / -18	2	✓ Closing fragment
08-12 17:49	20m	-9 / -11	R7GA	-8 / -11	3	✓ Full exchange observed
08-12 17:48	20m	-6 / -8	D2ACE	-6 / -7	4	✓ Full exchange observed
08-12 17:43	20m	-13 / -	RD0L	- / -16	2	✓ Closing fragment
08-12 17:39	20m	-10 / -	9J2FI	- / -14	6	Partial capture
08-09 19:37	160m	-18 / -	OH0ERF	- / -18	4	Partial capture
08-09 19:33	160m	-15 / +1	RY3K	+14 / -1	4	✓ Full exchange observed
08-09 19:25	160m	-16 / -	R3MDR	- / -15	2	✓ Closing fragment
08-09 19:23	80m	-7 / -10	RL2F	0 / -16	5	✓ Full exchange observed
08-09 19:22	80m	-9 / -	R2DYC	+1 / -20	3	✓ Closing observed
08-09 19:21	80m	-8 / -	RQ3D	- / -12	2	✓ Closing fragment
08-09 19:18	80m	-10 / -	RL2Y	- / +1	4	Partial capture
08-09 19:10	40m	-22 / -	YM7KK	- / -12	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
193330 -16 1181  RA4Y RU3XX -01
193515 -15 1802  RU3XX RA4Y R+09
193530 -11 1230  RA4Y RU3XX RR73
193545 -11 1802  RU3XX RA4Y 73
180945 -20 1884  EI4DQ RU3XX -24
181115 -21 1198  RW6MZ RU3XX -20
181500 -22 1263  RA6MQ/P RU3XX +02
181515  -8 2024  RU3XX RA6MQ/P R-03 (x2)
181615  +3 1135  RU3XX PI4DX R-15 (x2)
181900 -19 1209  RA3RDN RU3XX 73
181930 -16 1208  RA6FC RU3XX -09 (x2)
182345 -24 1203  RW6MZ RU3XX -15

80m

UTC    dB Audio  Message
174230 -11 1523  R7LB RU3XX -01 (x2)
174315  -5 1912  RU3XX R7LB R+02
174330 -10 1523  R7LB RU3XX RR73
174345  -8 1912  RU3XX R7LB 73
174345 +11 2524  RU3XX OK1FRG JN79
174400  -8 1522  OK1FRG RU3XX -15
174415 +16 2524  RU3XX OK1FRG R-03
174430 -11 1522  OK1FRG RU3XX RR73
174445 +13 2524  RU3XX OK1FRG 73
174615 -18 1522  RD6OX RU3XX -10
174630  +4 1820  RU3XX RD6OX R-01
174645 -12 1522  RD6OX RU3XX RR73
174700  +5 1820  RU3XX RD6OX 73
180500  -7 1689  GI4SNA RU3XX -15

40m

UTC    dB Audio  Message
155300  -9 1672  UA6XDA RU3XX -16
163030 -15 1547  EP2AES RU3XX -21 (x2)
163130  -8 1546  RT3K RU3XX R-05 (x2)
163230  -6 1545  R4CR RU3XX R-12 (x2)
163445 -14 1561  YD1EQN RU3XX -19
174615  -9 1103  VJ6X RU3XX -19 (x2)
174745 -13 1816  ZL1VAH RU3XX -18 (x4)
175445 -12 2133  VJ6X RU3XX -19

20m

UTC    dB Audio  Message
174930  -9 2370  R7GA RU3XX -11
174945  -8 2370  RU3XX R7GA R-11 (x2)
175100 -19 2369  F5IXN RU3XX -18 (x2)
175230 -16 2370  BI4XDT RU3XX -08 (x2)
175330  -9 2369  BU2FW RU3XX -21 (x2)
175430 -12 2368  YO9CX RU3XX R-16
175500 -11 2368  R6DJR RU3XX R-09 (x2)
175700 -12 2367  N1API RU3XX RR73
175900 -10 2367  A71DA RU3XX -11
132130  +1  481  RU3XX RR73; EB5FKD <...> -08

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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