OZ7KJ — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving OZ7KJ, decoded by SO8OO in southeastern Poland. 77 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-21 and 2026-09-06.

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 77 FT8 messages attributed to OZ7KJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (52%), followed by 10 m (22%) and 20 m (16%). Most decodes (51%) fell within the six-hour window 10:00-16:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -7 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

80m · 8 40m · 40 20m · 12 10m · 17

First attributed message: 2026-06-21
Last attributed message: 2026-09-06 12:34 UTC

Observed FT8 message patterns

Attributed sample: 77 messages
Active dates: 4 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -20 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 47.

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 OZ7KJ in decoded directed-looking exchanges:

EA3AGF · Spain F1PBZ · France K8DFD · United States PE0F · Netherlands RW0SR · Asiatic Russia UA4FEN · European Russia

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 OZ7KJ

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 · 10 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,118 km (approx.)
Last such locator decoded: 2026-08-15 13:02 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	OZ7KJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 12:33	40m	-10 / -	R1943OD	- / -22	2	Partial capture
09-06 12:12	40m	-15 / -	OZ7KJ/P	- / -5	3	Partial capture
09-06 06:39	80m	-5 / +10	OZ7KJ/P	0 / -	4	Partial capture
09-06 06:27	40m	-2 / -	OZ7KJ/P	- / -9	3	Partial capture
09-06 06:21	40m	-6 / -	IK0XBU/P	- / +1	3	Partial capture
09-06 06:10	40m	-4 / -	OZ7KJ/P	- / -6	4	Partial capture
09-06 05:22	40m	+2 / -	OZ7KJ/P	- / -15	2	Partial capture
09-06 05:11	40m	+2 / -	OZ7KJ/P	- / -17	2	Partial capture
09-06 04:34	40m	-4 / -	OZ7KJ/P	- / -1	4	Partial capture
09-06 00:42	40m	+1 / -	OZ7KJ/P	- / -15	3	Partial capture
09-05 20:53	80m	-4 / -	OZ7KJ/P	+5 / +9	2	Partial capture
09-05 16:49	80m	+2 / -	OZ7KJ/P	- / -23	3	Partial capture
09-05 16:35	40m	+2 / -	OZ7KJ/P	- / -15	4	Partial capture
09-05 16:28	40m	+4 / -	OZ7KJ/P	- / -5	2	Partial capture
09-05 15:42	80m	+1 / -5	SP5DFK/QRP	0 / -3	2	Partial capture
09-05 15:20	40m	0 / -	OZ7KJ/P	- / -9	2	Partial capture
08-15 13:50	20m	- / -6	EA3AGF	-20 / -	2	✓ Closing fragment
08-15 13:36	20m	- / -24	PE0F	-7 / -	9	✓ Closing fragment
08-15 13:27	20m	- / -16	RW0SR	-4 / -	2	✓ Closing fragment
08-15 13:00	20m	- / -10	F1PBZ	0 / -	4	✓ Closing fragment
08-15 12:57	20m	-15 / -	K8DFD	- / -16	2	✓ Closing fragment
08-15 12:53	20m	- / +1	UA4FEN	-6 / -	2	✓ Closing fragment
08-15 12:46	20m	-15 / -	NS9I	- / -20	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
061245  -4 2204  OZ7KJ/P OZ7KJ -12 (x3)
062145  -8 2204  IK0XBU/P OZ7KJ +01 (x3)
062745  -3 2204  OZ7KJ/P OZ7KJ -09 (x7)
123345  -9 1761  R1943OD OZ7KJ -22 (x2)

80m

UTC    dB Audio  Message
154230  +1 1228  SP5DFK/QRP OZ7KJ -03
154245  +0 1226  OZ7KJ SP5DFK/QRP R-05
164900  +2 1228  OZ7KJ/P OZ7KJ -23 (x4)
205345  +5 1164  OZ7KJ OZ7KJ/P R+12
063915  -4 1460  OZ7KJ/P OZ7KJ +11 (x3)
064030  +0 1127  OZ7KJ OZ7KJ/P R+10

20m

UTC    dB Audio  Message
130230 -16 2220  CQ OZ7KJ JO46
131930 -22 2221  UR4LG OZ7KJ -06
132745  -3 2842  OZ7KJ RW0SR R-16 (x2)
133615 -13 2221  OZ7KJ PE0F JO21 (x9)
135045 -22 1477  OZ7KJ EA3AGF R-06 (x2)

10m

UTC    dB Audio  Message
122430 -21 1436  OZ7KJ F8AXO R-13

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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