RC6ZU — 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: KN98

Receiver-side FT8 activity involving RC6ZU, decoded by SO8OO in southeastern Poland. 478 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 33 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-10-23.

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 478 FT8 messages attributed to RC6ZU as the transmitting token by decoded message structure across 33 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (57%), followed by 40 m (39%) and 10 m (3%). Several six-hour UTC windows tied for the largest share (71%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -6 dB.

Overview

478

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 272 40m · 187 20m · 6 10m · 13

First attributed message: 2026-06-17
Last attributed message: 2026-10-23 13:38 UTC

Observed FT8 message patterns

Attributed sample: 478 messages
Active dates: 33 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -15 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 47, moderate (-15 to -9 dB) 141, strong (≥ -8 dB) 290.

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 RC6ZU in decoded directed-looking exchanges:

ON4MAP · Belgium ×6 R9UBE · Asiatic Russia ×2 F1IQH · France ×2 UK8FCM · Uzbekistan ×2 DO5PY · Fed. Rep. of Germany ×2 EA5HM · Spain ×2 R9CS/P · Asiatic Russia ×2 YO8XFU · Romania ×2 RM3TO · European Russia RW1C · European Russia UB5MBA · European Russia SV9MBH · Crete

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 RC6ZU

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: KN98 · 196 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,257 km (approx.)
Last such locator decoded: 2026-10-23 13:38 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	RC6ZU S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 13:33	40m	- / -12	OE6TNO	-1 / -	3	✓ Closing fragment
10-22 14:24	40m	-16 / -12	UA3DTS	-16 / -2	5	✓ Full exchange observed
10-22 14:22	40m	-16 / -3	RV6ALM	-14 / -2	6	✓ Full exchange observed
10-22 14:20	40m	-17 / -	RV3GZ	-12 / -	3	✓ Closing observed
10-22 14:19	40m	- / -3	RA3LBW	-6 / -	2	✓ Closing fragment
10-18 02:03	80m	-14 / -	S79VU	- / -18	3	Partial capture
10-18 02:01	80m	- / -	F4FPR	-4 / -	4	Partial capture
10-18 01:59	80m	-8 / -7	F5MXH	+10 / -11	5	✓ Full exchange observed
10-18 01:52	80m	- / -12	DG5PW	-9 / -	3	✓ Closing fragment
10-18 01:49	80m	-18 / +1	UA3UCV	+1 / +5	5	✓ Full exchange observed
10-18 01:46	80m	- / -4	UA3ADE	+16 / -	2	✓ Closing fragment
10-18 01:44	80m	-17 / -13	R4FDD	+3 / -	3	✓ Closing observed
10-16 15:37	80m	-16 / -	RZ4M	-10 / -12	3	Partial capture
10-16 15:36	80m	-19 / -7	RC6OG	0 / -	4	✓ Closing observed
10-16 15:36	80m	-14 / -5	RA6MQ	-11 / -7	2	Partial capture
10-16 15:35	80m	-13 / -2	R3HH	+6 / -10	4	✓ Full exchange observed
10-13 01:20	80m	- / -3	F1PBZ	+6 / -	2	✓ Closing fragment
10-13 01:14	80m	-13 / -13	ON8FAB	-8 / -	3	✓ Closing observed
10-13 01:13	80m	-16 / -11	RW9MZ	-16 / -13	4	✓ Full exchange observed
10-13 01:11	80m	-8 / -12	CT7AUT	-10 / -	3	✓ Closing observed
10-13 01:08	80m	-14 / -	GM6URC	- / -16	3	✓ Closing fragment
10-13 01:07	80m	-18 / -14	RN7A	-17 / -	3	✓ Closing observed
10-13 01:05	80m	-16 / -12	EC3A	+2 / -11	6	✓ Full exchange observed
10-13 01:04	80m	- / -	DL4DP	-6 / -	2	Partial capture
10-13 01:03	80m	-17 / -25	PI4DX	+14 / -14	5	✓ Full exchange observed
10-11 15:31	40m	- / -	S55A	-4 / -	2	Partial capture
10-11 15:28	40m	-12 / -	UG4I	-8 / -9	3	✓ Closing observed
10-11 15:28	40m	-15 / -	UB3BDB	- / -12	2	✓ Closing fragment
10-11 15:28	40m	- / -	EA3HMM	-2 / -	4	Partial capture
10-11 15:21	40m	- / -9	HG7HU	+6 / -	3	Partial capture
10-11 15:21	40m	-15 / -	R4PHH	- / -6	2	✓ Closing fragment
10-11 15:15	40m	-12 / -	OM6APJ	-2 / -17	2	Partial capture
10-10 02:32	80m	+1 / -15	EI4JFB	-15 / -16	6	✓ Full exchange observed
10-10 02:32	80m	- / -	G3TKT	-22 / -	4	Partial capture
10-08 15:20	80m	-15 / -	OM2WW	- / -19	2	Partial capture
10-08 15:19	80m	-10 / -	R9UBP	- / -24	2	Partial capture
10-08 15:16	80m	-10 / -	EV1R	+18 / +4	3	✓ Full exchange observed
10-08 15:14	80m	-14 / -	RA4FUT	- / +7	2	✓ Closing fragment
10-08 15:12	80m	-4 / -	R6ZB	-8 / +4	3	✓ Closing observed
10-08 15:11	80m	-5 / -2	YO4BXX	-4 / +1	4	✓ Full exchange observed
10-08 02:18	80m	-6 / +1	RA3M	-8 / -4	4	✓ Full exchange observed
10-08 02:17	80m	-12 / -	R9CB	- / -5	2	✓ Closing fragment
10-08 02:11	80m	-6 / 0	YO8XFU	-5 / 0	5	✓ Full exchange observed
10-08 02:06	80m	-5 / -	IZ8XXE	+9 / -9	3	✓ Closing observed
10-08 02:04	80m	-5 / -14	IU3WIX	-16 / -23	5	Partial capture
10-08 02:03	80m	-6 / -15	S55X	+2 / -10	3	✓ Full exchange observed
10-08 02:02	80m	-5 / -	DO6MFD	- / -8	2	✓ Closing fragment
10-08 01:57	80m	-8 / -16	CT2GQA	-19 / -12	5	✓ Full exchange observed
10-08 01:55	80m	-8 / -	US1EA	-6 / +1	4	✓ Full exchange observed
10-08 01:53	80m	-12 / +8	RD4CAF	-9 / +2	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
142315 -16 2284  RV6ALM RC6ZU -02
142330 -17 1699  RC6ZU RV6ALM R-03
142345 -16 2283  RV6ALM RC6ZU RR73
142400 -15 1698  RC6ZU RV6ALM 73
142415 -20 2283  CQ RC6ZU KN98                         a1
142430 -12 1181  RC6ZU UA3DTS KO95
142445 -17 2283  UA3DTS RC6ZU -02
142500 -16 1181  RC6ZU UA3DTS R-12
142515 -14 2283  UA3DTS RC6ZU RR73
142530 -19 1181  RC6ZU UA3DTS 73
133330  +0  570  RC6ZU OE6TNO JN77 (x3)
133800 -11  570  CQ RC6ZU KN98 (x2)

80m

UTC    dB Audio  Message
020000  -9  548  F5MXH RC6ZU -11
020015 +10  547  RC6ZU F5MXH R-07
020030  -8  547  F5MXH RC6ZU RR73
020045  +8  547  RC6ZU F5MXH 73
020100  -6  548  CQ RC6ZU KN98
020115  -5  548  RC6ZU F4FPR IN88
020130  -8  548  CQ RC6ZU KN98
020145  -2  548  RC6ZU F4FPR IN88
020200  -6  548  CQ RC6ZU KN98
020215  -4  548  RC6ZU F4FPR IN88
020245  -2 1422  RC6ZU ON4MAP JO20
020245  -7  548  RC6ZU F4FPR IN88
020300  -9  547  S79VU RC6ZU KN98 (x3)

10m

UTC    dB Audio  Message
082645 -18 1008  CQ RC6ZU KN98
082915 -17 1003  UB5MBA RC6ZU RR73
082945 -11 1002  RA3LCX RC6ZU +00
083115 -16  998  HA7XL RC6ZU +01
083315 -11  996  RM3TO RC6ZU -07 (x2)
083415 -12  994  R3CE RC6ZU +02
083545 -17  993  RW1C RC6ZU R+00 (x2)
083645 -12  989  R3BV RC6ZU +03
110400  -1 2313  RC6ZU SV2AEL KN10 (x2)

20m

UTC    dB Audio  Message
134130  -4 2670  RC6ZU DL1R JN58 (x2)
134245  -9  504  R9UBE RC6ZU RR73
134300  +4 2670  RC6ZU DL1R JN58
134345  -6  504  PE9JAN RC6ZU -12
134400 -14 2572  RC6ZU PE9JAN R-10
134545 -10  507  CQ RC6ZU KN98
135130 -22 1502  RC6ZU SV9MBH KM25
135130  -6  506  RC6ZU R2GFD KO92 (x2)
135215 -11  506  SV9MBH RC6ZU RR73
135230  -6  505  RC6ZU R2GFD KO92
135245 -13  506  CQ RC6ZU KN98                         a1
135300  -3  505  RC6ZU R2GFD KO92 (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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