RU3OZ — 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: KO91

Receiver-side FT8 activity involving RU3OZ, decoded by SO8OO in southeastern Poland. 1,215 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 63 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-11-06.

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 1,215 FT8 messages attributed to RU3OZ as the transmitting token by decoded message structure across 63 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (37%), followed by 40 m (35%) and 80 m (15%). Most decodes (74%) 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 -9.9 dB.

Overview

1,215

Messages attributed

UTC dates decoded

177

Active 15-min windows

-9.9 dB

Estimated median S/N

Bands

160m · 451 80m · 186 60m · 1 40m · 421 20m · 25 10m · 131

First attributed message: 2026-06-12
Last attributed message: 2026-11-06 03:50 UTC

Observed FT8 message patterns

Attributed sample: 1,215 messages
Active dates: 63 UTC dates
Estimated median S/N: -9.9 dB
Estimated 10th-90th percentile: -20 to +4.3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 298, moderate (-15 to -9 dB) 359, strong (≥ -8 dB) 558.

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 RU3OZ in decoded directed-looking exchanges:

R3YK · European Russia ×2 RU4CK · European Russia ×2 UB1Q · European Russia ×2 G5GDX · England ×2 R9OOF · Asiatic Russia ×2 RI1FJZ · Franz Josef Land ×2 TN8GD · Republic of the Congo ×2 E75C · Bosnia-Herzegovina ×2 DL7RAY · Fed. Rep. of Germany LU3CM · Argentina LU3DOY · Argentina PP2JP · Brazil

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 RU3OZ

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: KO91 · 644 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,221 km (approx.)
Last such locator decoded: 2026-11-06 03:50 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	RU3OZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 16:19	40m	- / -13	R4PFY	-24 / -	2	Partial capture
11-05 16:15	40m	-10 / +1	RD3FY	-2 / 0	7	✓ Full exchange observed
11-02 03:55	40m	- / +4	TC2TR	-7 / -	2	✓ Closing fragment
11-01 16:41	160m	-16 / -	R3YK	- / -18	7	✓ Closing fragment
10-30 19:53	160m	-17 / -	RX9JY	- / -6	3	✓ Closing fragment
10-30 19:49	160m	-20 / -	JA3USA	- / -	2	Partial capture
10-30 19:12	160m	-20 / -	VK3NX	- / -	2	Partial capture
10-30 18:47	160m	-15 / -3	SV9GPV	0 / -9	5	✓ Full exchange observed
10-30 18:43	160m	-22 / -	JE6KYA	- / -19	6	✓ Closing fragment
10-30 18:40	160m	-13 / -	RA6MQ/P	- / -16	3	Partial capture
10-30 18:37	160m	-20 / -	UN8DSW	- / -10	2	Partial capture
10-30 18:29	160m	-16 / -	UN8DSW	- / -	7	Partial capture
10-30 17:59	160m	- / -13	RK1N	-9 / -	2	✓ Closing fragment
10-30 17:48	80m	-9 / -17	RA4NCC	-15 / -12	4	✓ Full exchange observed
10-30 17:47	80m	-8 / -	RV9XV	- / -13	2	✓ Closing fragment
10-30 17:46	80m	-14 / -	R6AO	- / -4	2	✓ Closing fragment
10-28 17:47	160m	- / -16	LZ1FBI	0 / -	2	✓ Closing fragment
10-28 17:16	40m	-15 / -	RT8T	- / -10	3	✓ Closing fragment
10-27 03:30	40m	0 / -	TL8GD	- / -13	6	✓ Closing fragment
10-27 03:21	40m	-2 / +4	F5MXH	-2 / -12	8	✓ Full exchange observed
10-27 03:18	40m	-3 / -	LU5VV	- / -15	5	✓ Closing fragment
10-27 03:14	40m	-1 / -	LU5VV	- / -	2	Partial capture
10-27 02:49	80m	-6 / -	RA6MQ/P	- / -	2	Partial capture
10-27 02:42	160m	-1 / -	RL6ZK	-10 / +7	5	✓ Full exchange observed
10-26 17:46	160m	-24 / -	R9FAI	- / -25	2	✓ Closing fragment
10-26 16:30	80m	-10 / -	SP9TBT/5	- / -	4	Partial capture
10-25 17:17	80m	-19 / -	UA3SCU	- / -7	3	Partial capture
10-25 17:10	80m	- / -10	DG3YEV	+1 / -	3	✓ Closing fragment
10-25 17:07	160m	-14 / -	OH3NXW	+2 / -8	3	✓ Closing observed
10-25 17:02	160m	-11 / -11	YO8RAW	-6 / -18	8	✓ Full exchange observed
10-25 16:41	160m	-16 / +7	RA3QM	-8 / -2	6	✓ Full exchange observed
10-25 16:39	160m	-16 / -	R6FFB	- / +3	4	✓ Closing fragment
10-24 18:53	40m	- / -6	R6DZR	+2 / -	2	Partial capture
10-24 18:49	160m	-10 / -	DK7TX	- / -	3	Partial capture
10-24 18:44	160m	-10 / -	RW3ZR	-10 / +9	7	✓ Closing observed
10-24 18:03	160m	-20 / -	R4NBV	- / -2	2	Partial capture
10-23 18:50	80m	0 / -10	R6DJR	-5 / -	4	✓ Closing observed
10-22 19:11	160m	-13 / -	EX7DY	- / -22	6	✓ Closing fragment
10-22 19:03	160m	-24 / 0	RU3SD	-4 / +8	5	✓ Full exchange observed
10-22 18:56	160m	-24 / -	R6DAZ	- / -	2	Partial capture
10-22 18:51	160m	-20 / -	RW6AU	- / -21	5	Partial capture
10-21 17:46	160m	-18 / -	PC0A	- / -	2	Partial capture
10-21 17:44	160m	-18 / 0	OH4TQ	+7 / -8	6	✓ Full exchange observed
10-21 17:43	160m	-24 / -	RK6MC	-4 / -	2	✓ Closing observed
10-21 17:42	160m	-20 / 0	RA4CFX	-14 / -	4	✓ Full exchange observed
10-21 14:07	160m	- / -5	R7MR	-8 / -	3	✓ Closing fragment
10-20 20:11	40m	+9 / -5	JF2XGF	-2 / -6	3	✓ Full exchange observed
10-20 20:09	40m	-2 / -	JE1FQV	- / -9	2	✓ Closing fragment
10-20 20:05	40m	-4 / -	TA2VUZ	- / -10	3	✓ Closing fragment
10-20 01:28	40m	- / -4	F5OYA/P	-12 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
191230 -17 1881  VK3NX RU3OZ KO91 (x2)
194915 -24 1881  JA3USA RU3OZ KO91 (x2)
195345 -19 1881  RX9JY RU3OZ KO91 (x3)
164115 -15 1629  R3YK RU3OZ KO91 (x7)
035045  -1 2092  LY7M RU3OZ KO91

40m

UTC    dB Audio  Message
033315  -4 2208  TL8GD RU3OZ 73
171600 -18 2209  RT8T RU3OZ KO91 (x3)
035530  -5 2063  RU3OZ TC2TR +04 (x2)
161530  -9 2126  RD3FY RU3OZ KO91
161545  -2 3012  RU3OZ RD3FY +01 (x3)
161700 -10 2126  RD3FY RU3OZ R+00
161715  -4 3012  RU3OZ RD3FY RR73
161730 -10 2126  RD3FY RU3OZ 73
161915 -23 2060  RU3OZ R4PFY -13 (x2)

80m

UTC    dB Audio  Message
163115 -11 2276  SP9TBT/5 RU3OZ KO91 (x2)
163215 -17 2277  <UA9JTJ/4> RU3OZ KO91
024915 -10 2175  RA6MQ/P RU3OZ KO91
025015  -1 2175  R3TY RU3OZ KO91
025115  -1 2177  RA6MQ/P RU3OZ KO91
174245 -16 1890  PE50SCOUT RU3OZ KO91
174600 -14 1890  R6AO RU3OZ R-04 (x2)
174700 -10 1890  RV9XV RU3OZ R-13 (x2)
174800  -5 1890  RA4NCC RU3OZ -12
174815 -12  261  RU3OZ RA4NCC R-17
174830 -13 1890  RA4NCC RU3OZ RR73
174845 -18  261  RU3OZ RA4NCC 73

60m

UTC    dB Audio  Message
175600  -8  883  RU3OZ ES0RY -07 (x2)
175700  +5  804  RU3OZ G4ZFJ JO01
175715 -15 1758  G4ZFJ RU3OZ -11
175730  +0  803  RU3OZ G4ZFJ R-13 (x2)
175800 -13 1901  RU3OZ DK7ZT -16 (x2)

10m

UTC    dB Audio  Message
190100  -5 1145  PY5NBX RU3OZ R-15
190215  -1 1145  PY4BSC RU3OZ KO91
190315  -3 1144  PU6PSK RU3OZ KO91
190430  -2 1189  PY2ABL RU3OZ KO91 (x2)
190745 -10 1188  PY4BSC RU3OZ R-18 (x4)
191000 -12 1687  LU3CM RU3OZ KO91 (x3)
191200 -21 1687  PY3XD RU3OZ KO91 (x2)
141415 -16 1299  RU3OZ OZ/KD0NDU -09

20m

UTC    dB Audio  Message
123245 -15  737  RI0FA RU3OZ KO91 (x2)

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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