OZ0A — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Denmark Most frequent locator attributed to this token: JO55

Receiver-side FT8 activity involving OZ0A, decoded by SO8OO in southeastern Poland. 1,725 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 64 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-13.

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 1,725 FT8 messages attributed to OZ0A as the transmitting token by decoded message structure across 64 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (30%), followed by 40 m (24%) and 80 m (19%). Most decodes (79%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was -4 dB.

Overview

1,725

Messages attributed

UTC dates decoded

271

Active 15-min windows

-4 dB

Estimated median S/N

Bands

160m · 310 80m · 335 60m · 511 40m · 415 20m · 14 10m · 140

First attributed message: 2026-06-06
Last attributed message: 2026-10-13 19:32 UTC

Observed FT8 message patterns

Attributed sample: 1,725 messages
Active dates: 64 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -13 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 94, moderate (-15 to -9 dB) 336, strong (≥ -8 dB) 1,295.

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 OZ0A in decoded directed-looking exchanges:

GB8VJ · England ×3 RK6OQ · European Russia ×3 OH5KNL · Finland ×3 R3KLE · European Russia ×2 SV2CLJ · Greece ×2 F1PBZ · France ×2 PA3EWP · Netherlands ×2 UT4WT · Ukraine ×2 8S7DL · Sweden ×2 DL9KM · Fed. Rep. of Germany ×2 EC5M · Spain ×2 G4YAN · England ×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 OZ0A

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: JO55 · 810 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 953 km (approx.)
Last such locator decoded: 2026-10-13 19:32 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	OZ0A S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-13 19:33	160m	- / -	LA9JKA	-10 / -	4	Partial capture
10-13 19:32	160m	-1 / -8	HA5AO	0 / +1	4	✓ Full exchange observed
10-13 19:26	160m	-3 / -	DG4BZ	- / -15	3	Partial capture
10-13 19:25	160m	-2 / -20	RA5AD	-8 / +2	5	✓ Full exchange observed
10-13 19:17	160m	-14 / -	RA5AD	- / -	4	Partial capture
10-13 19:14	160m	-13 / -	UT4WT	+2 / -	4	✓ Closing observed
10-13 19:13	160m	-3 / -	SQ2BXI	-10 / -2	4	✓ Closing observed
10-13 18:36	60m	-2 / +1	OO7P	+5 / -	5	✓ Full exchange observed
10-13 18:36	60m	-9 / -13	DL1JEL	+8 / +10	6	✓ Full exchange observed
10-11 04:06	160m	-2 / -	9T0MD	- / -	3	Partial capture
10-11 03:57	160m	-5 / -	9T0MD	- / -	8	Partial capture
10-10 19:43	160m	+6 / -	F4JUQ	- / -15	2	Partial capture
10-10 19:36	160m	+6 / -	TA4EE	- / -	2	Partial capture
10-10 19:34	160m	+1 / -	OZ1ITS	- / -14	3	✓ Closing fragment
10-10 19:32	160m	+3 / +8	OZ3AEV	-12 / +1	5	✓ Full exchange observed
10-10 19:24	160m	-2 / -20	II5GG	-5 / -1	11	Partial capture
10-10 19:16	80m	- / -5	F4GGK	0 / -	3	✓ Closing fragment
10-10 18:46	80m	-8 / -13	UZ5ZU	+6 / -5	5	✓ Full exchange observed
10-10 18:42	80m	-11 / -9	SQ8AZT	-6 / -4	6	✓ Full exchange observed
10-10 18:25	160m	-5 / -8	IU1CIW	0 / -	5	✓ Full exchange observed
10-10 18:21	160m	-4 / -15	OM2WW	-3 / -6	4	Partial capture
10-09 19:04	160m	-2 / -	9H1ES	- / -	2	Partial capture
10-09 17:20	80m	- / -5	HA/DO1SWC	-8 / -	3	Partial capture
10-09 17:16	80m	-10 / -	RW9QA	- / -	2	Partial capture
10-08 15:07	160m	-15 / -1	OM3SX	+17 / -	5	✓ Full exchange observed
10-06 17:34	40m	-14 / -	G4YLJ	- / -	2	✓ Closing fragment
10-06 17:31	40m	- / -	LY4Q	-5 / -	3	Partial capture
10-06 17:28	40m	-8 / -	EU4U	+13 / -1	3	✓ Closing observed
10-06 17:26	80m	-6 / -	YO5OAI	+9 / -9	4	✓ Closing observed
10-06 17:24	80m	+4 / -7	ON6PL	+3 / +3	3	Partial capture
10-06 17:22	80m	-6 / -6	9A5E	+10 / +4	5	✓ Full exchange observed
10-05 13:50	40m	-3 / -	<...>	- / -	3	Partial capture
10-04 15:53	40m	- / -2	G3VCQ	-5 / -	2	Partial capture
10-04 15:53	40m	- / 0	F5BWS	-6 / -	2	✓ Closing fragment
10-04 15:49	80m	-12 / -12	DO4SO	+2 / -	3	Partial capture
10-04 15:46	80m	-17 / -	SP7JLH	- / -	2	Partial capture
10-03 17:52	40m	- / -14	YU65AEC	+2 / -	2	Partial capture
10-03 17:50	40m	-8 / +5	RV3YN	-4 / +8	5	✓ Full exchange observed
10-03 16:28	10m	- / +6	EA7TS	-8 / -	2	✓ Closing fragment
10-02 20:07	60m	+1 / +1	DH4PAP	-2 / +5	5	✓ Full exchange observed
10-02 20:06	60m	-8 / -	4Z5KU	-18 / -16	4	✓ Closing observed
10-02 20:03	60m	0 / -11	DD4U	-7 / -19	6	✓ Full exchange observed
10-02 20:02	60m	-8 / +7	HB9XQH	-4 / -5	5	✓ Full exchange observed
10-02 19:49	160m	+6 / -	SP9GCZ	- / -	2	Partial capture
10-02 19:46	160m	-7 / -	UA3PTK	- / -	2	Partial capture
10-02 19:31	40m	- / 0	ON7VZ	-4 / -	2	Partial capture
10-02 18:47	40m	-7 / -	HA5LB	- / -12	2	Partial capture
10-02 18:45	40m	-7 / -9	ON5LC	-8 / -	3	Partial capture
10-02 18:43	40m	-11 / -	LZ73TRC	- / +4	2	Partial capture
10-02 18:41	40m	-10 / -9	DL1RBV	-12 / -17	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
135045  -3 2944  <...> OZ0A JO55 (x3)
135215 -21 1372  DL/PA2RO OZ0A JO55
172830 -10 2722  EU4U OZ0A R-01
172845 +13 2721  OZ0A EU4U RR73
172900  -5 2722  EU4U OZ0A 73
173145  -8 1385  OZ0A LY4Q KO24 (x3)
173300 -13 1584  OZ0A EU6UE RR73
173430 -16 1257  G4YLJ OZ0A JO55 (x2)
185645 -14 1039  OZ0A G0VXM -06
193930 -14 1340  OZ0A G4GDS R-03

160m

UTC    dB Audio  Message
192530  -5 1742  RA5AD OZ0A R+02
192545  -6 1742  OZ0A RA5AD RR73
192600  +4 1742  RA5AD OZ0A 73
192645  +1 1407  DG4BZ OZ0A JO55 (x3)
193015  -3 1550  M3ZZF OZ0A JO55
193200  +0 1244  HA5AO OZ0A JO55
193215  +1 1244  OZ0A HA5AO -08
193230  -2 1244  HA5AO OZ0A R+01
193245  -1 1244  OZ0A HA5AO RR73
193345  -9 1464  OZ0A LA9JKA JP32 (x4)

60m

UTC    dB Audio  Message
200815  +4  485  DH4PAP OZ0A R+05
200830  +0  486  OZ0A DH4PAP RR73
200845  -2  485  DH4PAP OZ0A 73
175615  -5  979  GM4KGK OZ0A JO55
183615  -6 1051  DL1JEL OZ0A JO55
183645  -4 2659  OO7P OZ0A JO55
183700  +6 2659  OZ0A OO7P +01
183715  +0 2659  OO7P OZ0A R+16
183730  +4 2659  OZ0A OO7P RR73
183745  -2 2659  OO7P OZ0A 73
183815  -7 1051  DL1JEL OZ0A JO55
183830  +6 1051  OZ0A DL1JEL -13
183845 -11 1051  DL1JEL OZ0A R+10
183900  +9 1051  OZ0A DL1JEL RR73
183915 -12 1051  DL1JEL OZ0A 73

80m

UTC    dB Audio  Message
184330  -5 2456  OZ0A SQ8AZT RR73
184345 -12 2456  SQ8AZT OZ0A 73
184645 -14 3016  UZ5ZU OZ0A JO55
184700  +7 3017  OZ0A UZ5ZU -13
184715  -4 3016  UZ5ZU OZ0A R-05
184730  +5 3016  OZ0A UZ5ZU RR73
184745  -5 3016  UZ5ZU OZ0A 73
191130  -2 1601  OZ0A II5GG RR73
191445  -4 1727  OZ0A RW3YS RR73
191600  +0  355  OZ0A F4GGK -05 (x3)
191845 -21 1189  G0ORH OZ0A R+06
162200 -14 1105  OZ0A DC0GL RR73
162300 -23 1594  I4USC OZ0A JO55

10m

UTC    dB Audio  Message
170015  +2 1033  4Z5PT OZ0A R-04 (x2)
170730  +1  815  SP4MPH OZ0A JO55 (x3)
170930 -10 1586  OZ1BIN OZ0A JO55
171015 -11 2545  OZ0A DK8NX JN59
171030  -8 1586  DK8NX OZ0A +20 (x2)
190615 -14 1104  F4JVF OZ0A JO55
073200 -23 2033  OZ0A UN7PNF -21
103730 -20 1283  OZ0A EA8VJ RR73 (x2)
162800  -6 1227  OZ0A EA7TS +06 (x2)

20m

UTC    dB Audio  Message
192600 -21 1443  CR5VP OZ0A R-12 (x2)
075930 -12  508  OZ0A G7IGC RR73
080030  -5  508  OZ0A R2PX R-08 (x2)
181630 -21 1342  OZ0A PB1PCH RR73
171730  -3  557  OZ0A A61QQ -03 (x2)
192200 -11  787  HA2AI OZ0A JO55
181030  +1  823  OZ0A EG2FPA RR73
164145 -13 1275  OZ0A CR5VP -02
165530  -7 2989  OZ0A IU1SCB/IN3 -15
183545  -8 1077  BA3NZ OZ0A JO55
183615  -5 1168  9A5MP OZ0A JO55 (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.

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