OZ5YN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Denmark Most frequent locator attributed to this token: JO46

Receiver-side FT8 activity involving OZ5YN, decoded by SO8OO in southeastern Poland. 47 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-14 and 2026-08-23.

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 47 FT8 messages attributed to OZ5YN as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (72%), followed by 20 m (26%) and 40 m (2%). Most decodes (83%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -4 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 34 40m · 1 20m · 12

First attributed message: 2026-07-14
Last attributed message: 2026-08-23 16:23 UTC

Observed FT8 message patterns

Attributed sample: 47 messages
Active dates: 6 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -15 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 33.

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 OZ5YN in decoded directed-looking exchanges:

IW9FRA · Sicily ×2 HF0S · Poland M9LCB · England ON4AOI · Belgium PD4RJ · Netherlands OZ9FF · Denmark SV2AEL · Greece DK0ACI · Fed. Rep. of Germany DL4RAQ · Fed. Rep. of Germany DO2RG · Fed. Rep. of Germany DO6LE · Fed. Rep. of Germany F4ESO · France

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 OZ5YN

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: JO46 · 13 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,118 km (approx.)
Last such locator decoded: 2026-08-23 16:22 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	OZ5YN S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 16:22	20m	-8 / -10	ON4AOI	+2 / -4	4	✓ Full exchange observed
08-23 16:20	20m	-17 / -8	EN35UKR	+2 / 0	3	Partial capture
08-23 15:47	20m	-9 / -6	PD4RJ	-16 / -5	6	✓ Full exchange observed
08-18 20:19	80m	- / -19	HA1DUQ	+2 / -	4	Partial capture
08-18 20:12	80m	0 / -5	LY8O	+4 / -2	6	✓ Full exchange observed
08-18 20:10	80m	0 / +7	F4ESO	-10 / +6	5	✓ Full exchange observed
08-07 21:31	80m	+2 / -6	DL4RAQ	+4 / -1	4	✓ Full exchange observed
08-07 21:29	80m	-5 / -12	IW9FRA	-12 / -15	5	✓ Full exchange observed
08-07 21:23	80m	- / 0	DK0ACI	-4 / -	2	✓ Closing fragment
08-07 21:17	80m	- / -11	G8OO	-9 / -	5	✓ Closing fragment
08-07 21:06	80m	-1 / -	DO2RG	+2 / -	9	✓ Closing observed
08-07 21:06	80m	-2 / -	LB6MJ	-6 / +8	4	✓ Full exchange observed
08-07 21:03	80m	-4 / -7	DO6LE	0 / +7	4	✓ Full exchange observed
08-07 21:00	80m	-4 / +4	SP7NC	+12 / +7	6	✓ Full exchange observed
08-07 20:59	80m	-5 / -1	ON5AM	-9 / +5	3	Partial capture
08-07 20:57	80m	-4 / -	TF4M	- / -7	2	Partial capture
08-07 20:56	80m	-3 / -13	YO1BRANCUSI	+3 / -6	3	✓ Full exchange observed
08-07 20:55	80m	- / -	US3LX	+3 / -	4	Partial capture
08-07 20:53	80m	-4 / -17	UA4FKT	+5 / +4	4	Partial capture
08-07 20:52	80m	-5 / -12	OH5KNL	0 / -	3	✓ Closing observed
08-06 18:48	40m	- / -7	OZ9FF	-7 / -	2	✓ Closing fragment
08-06 18:37	40m	-12 / -	UA4FKT	-1 / +4	3	Partial capture
08-06 18:36	40m	- / -16	SV2AEL	-7 / -	2	✓ Closing fragment
08-06 18:23	80m	-14 / -	DO1SJF	- / -8	3	Partial capture
08-06 18:21	80m	- / -9	SP3NGH	-3 / -	3	✓ Closing fragment
07-28 18:20	20m	- / -3	M9LCB	-15 / -	2	✓ Closing fragment
07-22 12:50	20m	- / -7	PA2PS	-16 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
101100  -7 2391  OZ5YN OO26TRUDO -05
150315  -2  892  OZ5YN GU0UVH RRR
154700  -9 1427  PD4RJ OZ5YN JO46
154715 -16 1427  OZ5YN PD4RJ -06
154730  -6 1427  PD4RJ OZ5YN R-05 (x4)
162015 -17 1876  EN35UKR OZ5YN JO46
162030  +2 1876  OZ5YN EN35UKR -08
162045 -17 1876  EN35UKR OZ5YN R+00
162245 -10  537  ON4AOI OZ5YN JO46
162300  +5  536  OZ5YN ON4AOI -10
162315  -6  537  ON4AOI OZ5YN R-04
162330  -2  536  OZ5YN ON4AOI RR73

80m

UTC    dB Audio  Message
201030 -12 1789  OZ5YN F4ESO +07
201045  -2 1790  F4ESO OZ5YN R+06
201100  -9 1789  OZ5YN F4ESO RR73
201115  +0 1790  F4ESO OZ5YN 73
201215  +2  952  LY8O OZ5YN JO46 (x2)
201300  +5  953  OZ5YN LY8O -05
201315  -2  952  LY8O OZ5YN R-02
201330  +3  953  OZ5YN LY8O RR73
201345  +2  952  LY8O OZ5YN 73
201415  +0 2330  EI4KF OZ5YN JO46
201930  +2 1938  OZ5YN HA1DUQ -19 (x4)

40m

UTC    dB Audio  Message
183600  -7 2545  OZ5YN SV2AEL -16 (x2)
183700  -1 2543  OZ5YN UA4FKT LO23 (x2)
183745 -12 2543  UA4FKT OZ5YN +04
184815  -8 2312  OZ5YN OZ9FF -07 (x2)
185545 -14 2534  OZ5YN F1PBZ -14

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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