OZ/DF4ZL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Denmark Most frequent locator attributed to this token: JN75

Receiver-side FT8 activity involving OZ/DF4ZL, decoded by SO8OO in southeastern Poland. 235 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 6 UTC dates in the available aggregate history. Observed between 2026-09-12 and 2026-09-17.

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 235 FT8 messages attributed to OZ/DF4ZL as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 60 m (31%) and 80 m (10%). Most decodes (58%) 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 (73%); the estimated median was -5 dB.

Overview

235

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 23 60m · 73 40m · 139

First attributed message: 2026-09-12
Last attributed message: 2026-09-17 06:11 UTC

Observed FT8 message patterns

Attributed sample: 235 messages
Active dates: 6 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -13 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 54, strong (≥ -8 dB) 172.

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 OZ/DF4ZL in decoded directed-looking exchanges:

AO77R · Spain ×3 Z335MK · North Macedonia ×3 8N7I6O · Japan TM73FT · 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 OZ/DF4ZL

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: JN75 · 4 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 708 km (approx.)
Last such locator decoded: 2026-09-16 07:27 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	OZ/DF4ZL S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 06:53	40m	- / -	YO6MP	-2 / -	2	Partial capture
09-17 06:39	40m	- / -	HA7TM	+2 / -	3	Partial capture
09-17 06:33	40m	- / -	HA7TM	+6 / -	2	Partial capture
09-17 06:29	40m	- / -	DA1ST	-6 / -	3	Partial capture
09-17 06:23	40m	- / -	HA7TM	+3 / -	3	Partial capture
09-17 06:12	40m	- / -	HA7TM	+3 / -	3	Partial capture
09-17 06:06	40m	- / -7	IW8FDU	-15 / -	3	Partial capture
09-17 05:56	40m	- / -	HA7TM	+2 / -	2	Partial capture
09-17 05:53	60m	- / +3	F6EQZ	-7 / -	3	Partial capture
09-17 05:38	40m	-20 / -	HA5KN	- / 0	2	Partial capture
09-17 05:37	40m	-12 / -	AO77R	-19 / -	3	✓ Closing observed
09-17 05:21	40m	-22 / -	M3EIR	- / -25	2	Partial capture
09-17 04:56	40m	- / -	DL3EL	-2 / -	2	Partial capture
09-17 04:25	60m	- / -14	XE2X	-6 / -	2	Partial capture
09-16 22:10	60m	- / -3	HB9RB	-10 / -	2	Partial capture
09-16 21:50	60m	- / -13	9A4ZM	-10 / -	4	Partial capture
09-16 21:16	40m	- / -	TM73FT	-1 / -	10	✓ Closing fragment
09-16 20:49	40m	- / -	TM73FT	-7 / -	10	Partial capture
09-16 20:46	40m	-2 / -	BG7BVP	- / +1	2	Partial capture
09-16 19:55	60m	- / -	SP2GRP	0 / -	3	Partial capture
09-16 19:51	60m	- / -20	ON5PU	+2 / -	2	Partial capture
09-16 19:16	60m	- / -	DK2CC	-10 / -	2	Partial capture
09-16 19:13	60m	- / -	G4ZFJ	-1 / -	2	Partial capture
09-16 19:05	60m	- / +9	IK4CBO	-12 / -	2	Partial capture
09-16 18:57	60m	- / +2	DM2HW	-14 / -	8	Partial capture
09-16 18:55	60m	- / -2	SP5CJQ	-8 / -	2	Partial capture
09-16 18:53	60m	- / -	IK4CBO	-10 / -	2	Partial capture
09-16 18:45	60m	- / -1	S57X	-5 / -	3	Partial capture
09-16 18:42	60m	- / -4	PE1BTV	-14 / -	2	Partial capture
09-16 18:39	60m	- / -15	HA0GZ	0 / -	3	Partial capture
09-16 18:32	60m	- / -	OE1PMD	+2 / -	3	Partial capture
09-16 18:06	60m	- / -4	SP4NDY	+9 / -	2	Partial capture
09-16 18:00	60m	- / -13	HA7UL	-8 / -	2	Partial capture
09-16 17:58	60m	- / -5	LY7Z	-3 / -	11	Partial capture
09-16 17:50	60m	-7 / -	<...>	-6 / -	10	✓ Closing fragment
09-16 17:50	60m	-5 / -	OZ1SMB	+6 / -24	3	Partial capture
09-16 17:49	60m	-5 / -	SM0EJR	-9 / -	3	Partial capture
09-16 17:47	60m	-10 / -	<...>	-12 / -	3	✓ Closing fragment
09-16 17:44	60m	-2 / -	DG7AK	- / -11	2	Partial capture
09-16 17:42	60m	-1 / -	<...>	-6 / -	3	✓ Closing fragment
09-16 17:42	60m	- / +8	DG3TF	-4 / -	3	Partial capture
09-16 17:38	60m	- / -	<...>	-9 / -	2	✓ Closing fragment
09-16 17:36	60m	- / -5	DK4RH	-18 / -	7	Partial capture
09-16 17:34	60m	- / -	OK1BN	+3 / -	6	Partial capture
09-16 17:33	60m	-8 / -3	HF5A	+8 / -	3	Partial capture
09-16 17:30	60m	-6 / -	<...>	0 / -	8	✓ Closing fragment
09-16 17:29	60m	-7 / +6	OK1BN	+4 / -	3	Partial capture
09-16 17:24	60m	-5 / -1	PE1NPS	-9 / -	6	Partial capture
09-16 17:24	60m	- / -	DM2HW	-12 / -	3	Partial capture
09-16 17:24	60m	-6 / -	<...>	-7 / -	8	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
202215  -2 1838  OZ/DF4ZL DJ1OJ R+08
205800 -11  735  CT3IQ OZ/DF4ZL R-19
215015  -9 1773  OZ/DF4ZL 9A4ZM JN86 (x4)
221015 -10 1935  OZ/DF4ZL HB9RB JN37 (x2)
033045 -21 1763  OZ/DF4ZL K2MTG R-17
042515  -7 2770  OZ/DF4ZL XE2X -14 (x2)
055330  -8 1379  OZ/DF4ZL F6EQZ JN19 (x3)
173545 -15 1878  OZ/DF4ZL OH3CD R+01

40m

UTC    dB Audio  Message
061245  +4 1420  OZ/DF4ZL HA7TM JN97 (x5)
062945  -4 1420  OZ/DF4ZL DA1ST JO41 (x3)
063345  +6 1420  OZ/DF4ZL HA7TM JN97 (x5)
065345  -1 1200  OZ/DF4ZL YO6MP KN25 (x2)

80m

UTC    dB Audio  Message
000015  -5  959  OZ/DF4ZL PA3KUS JO21 (x15)

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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