RZ6CO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LN04

Receiver-side FT8 activity involving RZ6CO, decoded by SO8OO in southeastern Poland. 2,390 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 90 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-08.

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 2,390 FT8 messages attributed to RZ6CO as the transmitting token by decoded message structure across 90 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (36%), followed by 40 m (24%) and 80 m (20%). Most decodes (68%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

2,390

Messages attributed

UTC dates decoded

449

Active 15-min windows

-9 dB

Estimated median S/N

Bands

160m · 389 80m · 485 40m · 567 20m · 853 10m · 96

First attributed message: 2026-06-07
Last attributed message: 2026-09-08 15:08 UTC

Observed FT8 message patterns

Attributed sample: 2,390 messages
Active dates: 90 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -19 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 528, moderate (-15 to -9 dB) 701, strong (≥ -8 dB) 1,161.

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 RZ6CO in decoded directed-looking exchanges:

R9CS/P · Asiatic Russia ×8 TA3XEE · Asiatic Turkey ×5 RN3DDW/P · European Russia ×5 RA3VMK/P · European Russia ×3 R1BNG/P · European Russia ×3 RA3ZOM · European Russia ×3 R2SN · European Russia ×2 R2EA/P · European Russia ×2 R2FEA · Kaliningrad ×2 RA6ZA · European Russia ×2 R3HX · European Russia ×2 R3GO · European Russia ×2

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 RZ6CO

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: LN04 · 424 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,566 km (approx.)
Last such locator decoded: 2026-09-08 02:28 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	RZ6CO S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 15:07	40m	-10 / -	R6OV	- / -4	2	✓ Closing fragment
09-08 02:27	40m	-24 / -	YN8ZAC	- / -	2	Partial capture
09-08 02:22	40m	-21 / -	9Y4C	- / -	2	Partial capture
09-07 20:07	160m	-6 / -	RD0L	- / -	6	Partial capture
09-07 20:04	160m	-2 / -	RC0AT/P	- / -14	6	✓ Closing fragment
09-07 20:02	160m	-2 / -	RD0L	- / -	4	Partial capture
09-07 19:57	160m	-9 / -	RC0AT/P	- / -	2	Partial capture
09-07 19:40	160m	-8 / -	RC0AT/P	- / -	4	Partial capture
09-07 19:36	160m	-7 / -	RC0AT/P	- / -	4	Partial capture
09-07 19:30	160m	-6 / -	RC0AT/P	- / -	7	Partial capture
09-07 19:26	160m	-4 / -	RC0AT/P	- / -	3	Partial capture
09-07 19:23	160m	+1 / -	RD0L	- / -	5	Partial capture
09-07 19:21	160m	-8 / -	RC0AT/P	- / -	2	Partial capture
09-07 02:43	160m	-6 / 0	RY6O	-6 / -4	5	✓ Full exchange observed
09-07 02:38	160m	-7 / -	RY6O	- / -7	6	Partial capture
09-06 19:35	160m	-6 / -	R9CS/P	- / -5	4	✓ Closing fragment
09-06 19:25	80m	-2 / -	R1BQW	- / -12	2	✓ Closing fragment
09-06 19:14	160m	-10 / -	R9CS/P	- / 0	18	Partial capture
09-06 19:02	160m	-8 / -	R9CS/P	- / -6	14	Partial capture
09-06 18:10	160m	-11 / -8	R2SN	-11 / -	4	✓ Closing observed
09-06 18:09	160m	-7 / -10	S59A	+12 / -11	6	✓ Full exchange observed
09-06 18:08	160m	-5 / -	RA3RGQ	-24 / -10	5	✓ Closing observed
09-06 18:06	160m	-4 / -	RV6HE	- / -8	5	✓ Closing fragment
09-06 18:05	160m	-2 / -	RA3RGQ	- / -	2	Partial capture
09-06 16:28	160m	-14 / -	RD9U	- / -	3	Partial capture
09-06 16:23	160m	-15 / -8	UF3T	-13 / +2	4	✓ Full exchange observed
09-06 15:59	40m	-7 / -	RT8T	- / -11	2	Partial capture
09-06 15:57	40m	-8 / 0	RN4AQ	0 / -1	4	✓ Full exchange observed
09-06 15:55	40m	-8 / +4	RK3YWA	-8 / -7	5	✓ Full exchange observed
09-05 18:14	80m	-14 / -	UF6V/UA5D	-10 / -8	4	Partial capture
09-05 17:18	160m	-6 / -	BD4UJ	- / -22	5	Partial capture
09-05 17:11	160m	-4 / -	RV9WB	- / -16	2	✓ Closing fragment
09-05 17:10	160m	-7 / -	R9CS/P	-13 / 0	4	✓ Full exchange observed
09-05 16:56	40m	-3 / -	RA2FGK	- / -13	9	Partial capture
09-05 16:54	40m	-5 / -	UB3WAF	-8 / -8	5	✓ Full exchange observed
09-05 16:53	40m	-2 / -	R3NE	- / -16	2	✓ Closing fragment
09-05 16:26	80m	-4 / -	R3KLE	-8 / -2	4	✓ Full exchange observed
09-05 15:46	80m	-10 / -	RA3GK	- / -4	3	Partial capture
09-05 01:30	80m	-7 / -9	DO3KTY	+15 / -12	10	✓ Full exchange observed
09-05 01:29	80m	-9 / -22	TF3VS	+2 / -	4	✓ Closing observed
09-05 01:27	80m	-2 / -	R3OR	- / -5	2	Partial capture
09-05 01:24	80m	0 / -	TF3VS	- / -12	5	Partial capture
09-04 18:47	160m	-6 / -	UA6AUA	- / -9	14	Partial capture
09-04 18:31	160m	-6 / -	RI1FJL	- / -	2	Partial capture
09-04 18:26	40m	-7 / -	R2UD	- / -3	3	Partial capture
09-04 18:25	40m	-6 / -	R3ZCS	- / -12	2	Partial capture
09-04 18:24	40m	-8 / -	R6ZGS	- / 0	2	✓ Closing fragment
09-04 18:18	160m	-2 / -	UA0ACG	- / -5	4	✓ Closing fragment
09-04 18:06	80m	+1 / -	RX3VF	- / -12	3	✓ Closing fragment
09-04 18:02	80m	-9 / -	R1TET	-9 / -16	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
155700  -8 2250  RZ6CO RK3YWA 73
155730 -11 2045  RN4AQ RZ6CO -01
155745  -1  372  RZ6CO RN4AQ R+00
155800  -5 2044  RN4AQ RZ6CO RR73
155815  +0  372  RZ6CO RN4AQ 73
155830  -9 2044  RN3RHQ RZ6CO -08
155900 -10 2044  RT8T RZ6CO -11 (x2)
022245 -21 1803  9Y4C RZ6CO LN04 (x2)
022745 -24 1601  YN8ZAC RZ6CO LN04 (x2)
150715  -8 1987  R6OV RZ6CO -04
150745 -12 1987  UB9USV RZ6CO RR73
150845 -11 1987  R6OV RZ6CO RR73

160m

UTC    dB Audio  Message
200230  +1 1496  RD0L RZ6CO LN04 (x3)
200415  -2 1496  RC0AT/P RZ6CO LN04 (x6)
200730  -8 1497  RD0L RZ6CO LN04 (x6)

80m

UTC    dB Audio  Message
154600 -11 2008  RA3GK RZ6CO -04 (x3)
162645  -2 1552  R3KLE RZ6CO -02
162700 -10 2058  RZ6CO R3KLE R+13
162715  -6 1552  R3KLE RZ6CO RR73
162730  -6 2058  RZ6CO R3KLE 73
181430  +7 1852  R1943OD RZ6CO -08
181445 -10  919  RZ6CO UF6V/UA5D R+16
181630 -13 1852  UF6V/UA5D RZ6CO -08 (x3)
032200  -9 1911  LU1FP RZ6CO LN04
192515  -3 1702  R1BQW RZ6CO -12 (x2)

20m

UTC    dB Audio  Message
043730  -1 2166  RZ6CO RL4R R-02 (x2)
070030 -10 1777  R4QB RZ6CO -12 (x2)
070115  -3 1021  RZ6CO R4QB 73
070345 -12 1778  ER1WK/QRP RZ6CO -16
070830  -4 1504  RZ6CO ER1CW R-14 (x2)
071030  +0 1978  RZ6CO R3KF 73
071100  +5 2088  RZ6CO RM6OG R-02 (x2)
071300 +17 1119  RZ6CO RO6OP R-07
071315  -5 1977  RO6OP RZ6CO RR73
071330 +12 1119  RZ6CO RO6OP 73
071400  -2 1977  RA3VMD RZ6CO -09

10m

UTC    dB Audio  Message
154930 -16 1313  RZ6CO RA6ATZ KN96 (x2)
160215 -15 1378  RZ6CO R3GO R-11
161330  -5 1977  RZ6CO R3OR R-04 (x2)
161400  -4 1772  RZ6CO R7DX KN84 (x2)
183400  -8  294  RZ6CO UA1WFH 73
183600  +3  538  RZ6CO RN3DN R-13
092430 -16 1902  RZ6CO DN9SGE JO42
093145 -22 1792  R7RAG RZ6CO RR73
060400 -20 1804  RZ6CO RT6Z 73
060430 -17 1038  RZ6CO RC7LX RR73
070245 -21 2110  R5MA RZ6CO RR73
070315 -22 2109  RA4FW RZ6CO -11

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.

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