ON3URT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JO10

Receiver-side FT8 activity involving ON3URT, decoded by SO8OO in southeastern Poland. 812 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-09-01.

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 812 FT8 messages attributed to ON3URT as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (54%), followed by 20 m (45%) and 40 m (1%). Most decodes (58%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

812

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 442 40m · 6 20m · 364

First attributed message: 2026-06-14
Last attributed message: 2026-09-01 05:27 UTC

Observed FT8 message patterns

Attributed sample: 812 messages
Active dates: 11 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -13 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 342, strong (≥ -8 dB) 446.

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 ON3URT in decoded directed-looking exchanges:

F1PBZ · France ×3 F1IQH · France ×2 IK4LZH · Italy ×2 DL9KM · Fed. Rep. of Germany ×2 EA4RKC · Spain KY4E · United States GM4KHE · Scotland F1ODM · France DL7ACA · Fed. Rep. of Germany G4UJS · England G1MUC · England RX3ARG · 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 ON3URT

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: JO10 · 574 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,335 km (approx.)
Last such locator decoded: 2026-09-01 05:27 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	ON3URT S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-01 05:40	80m	- / -	SM7GIB	-2 / -	5	Partial capture
09-01 05:19	80m	-15 / -6	DL2RPN	-8 / -11	4	✓ Full exchange observed
09-01 05:17	80m	-14 / -	M7AVT	- / -25	2	Partial capture
09-01 04:45	80m	-13 / +10	DO1FZL	+2 / +6	7	✓ Full exchange observed
09-01 04:39	80m	-8 / +7	DO1SJF	-3 / -	5	✓ Full exchange observed
09-01 04:31	80m	-7 / +6	DM2AB	-6 / -16	4	✓ Full exchange observed
09-01 04:30	80m	-18 / -12	IK4UXA	+9 / -	4	✓ Full exchange observed
09-01 04:29	80m	-12 / -	F5LMJ	- / +2	2	✓ Closing fragment
09-01 04:27	80m	-9 / -4	DO7BE	-18 / -5	6	✓ Full exchange observed
09-01 04:16	80m	-8 / -	OO0O	- / -3	2	✓ Closing fragment
09-01 04:14	80m	-6 / -	IV3DSG	-2 / +7	5	✓ Full exchange observed
09-01 04:05	80m	-7 / -	EA3RO	- / -22	8	Partial capture
09-01 04:04	80m	-4 / +1	DL7ZF	-7 / -4	4	✓ Full exchange observed
09-01 04:03	80m	-4 / +6	DJ2PW	-6 / +6	4	✓ Full exchange observed
09-01 03:59	80m	-2 / -	DL9KM	-6 / -2	4	✓ Closing observed
09-01 03:58	80m	-2 / -	CT2HEX	- / -9	2	✓ Closing fragment
09-01 03:56	80m	-1 / -3	SP9YGD	+14 / +4	5	✓ Full exchange observed
09-01 03:51	80m	-2 / -	SP9YGD	+12 / +4	8	Partial capture
09-01 03:50	80m	-3 / -	EA5HM	- / -	3	✓ Closing fragment
08-31 17:34	40m	- / -6	G4YAN	-8 / -	5	✓ Closing fragment
08-31 17:31	40m	- / -24	E70SZ	+6 / -	6	Partial capture
08-31 17:29	40m	- / -20	SP9BGL	+5 / -	4	✓ Closing fragment
08-31 17:26	40m	- / -7	SN1A	+1 / -	3	✓ Closing fragment
08-31 17:25	40m	- / -13	PD4RJ	-14 / -	3	✓ Closing fragment
08-31 17:17	40m	- / -19	F4JUG	-14 / -	2	✓ Closing fragment
08-31 17:09	40m	- / +2	DL1NRC	-2 / -	2	✓ Closing fragment
08-31 17:07	40m	- / -5	F1PBZ	-10 / -	2	✓ Closing fragment
08-31 16:47	40m	- / -10	DH8YAU	-8 / -	3	✓ Closing fragment
08-31 16:45	40m	- / -2	DH5NC	+3 / -	3	✓ Closing fragment
08-31 16:42	40m	- / -7	F1IQH	-8 / -	3	✓ Closing fragment
08-29 06:25	20m	-11 / -	HA7TM/P	-7 / -2	4	Partial capture
08-29 05:31	20m	- / -24	R7OV	-4 / -	4	✓ Closing fragment
08-23 08:53	20m	+6 / -	UR5WCS	- / -	2	Partial capture
07-19 17:05	20m	- / -	R4CBQ	-6 / -	3	Partial capture
07-19 16:54	20m	-9 / -	M7KSV	-15 / -3	2	Partial capture
07-19 16:51	20m	-9 / 0	F4LER	-10 / -20	6	Partial capture
07-19 16:44	20m	- / +3	PE9E	-8 / -	2	✓ Closing fragment
07-19 16:32	20m	-8 / -	F4MGP	-24 / -4	3	✓ Closing observed
07-19 16:27	20m	-13 / -	RW3DDZ	- / -7	2	Partial capture
07-19 16:23	20m	-8 / -	LB7LJ	- / -6	4	✓ Closing fragment
07-19 15:49	20m	- / -9	EA5IXH	-8 / -	2	✓ Closing fragment
07-19 15:33	20m	-11 / -	SV1MNF	- / -23	4	Partial capture
07-19 14:53	20m	-8 / -6	UT7EZZ	+2 / -	5	✓ Full exchange observed
07-19 14:26	20m	-8 / -	UA6AR	- / -13	2	Partial capture
07-19 14:18	20m	-8 / -	UA6AR	- / -13	7	Partial capture
07-19 13:52	20m	-10 / -11	DL7DO	-7 / -8	5	✓ Full exchange observed
07-19 11:53	20m	-10 / -	US5WAN	- / -20	6	Partial capture
07-19 11:48	20m	-13 / -	US5WAN	- / -20	3	Partial capture
07-19 11:39	20m	-9 / -	DL5DQZ	- / -	2	✓ Closing fragment
07-19 11:24	20m	- / -	SM5MEK	-12 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
051800 -13  232  M7AVT ON3URT -25
051900 -16  233  CQ ON3URT JO10                        a1
051915  -7 1871  ON3URT DL2RPN JO62
051930 -15  233  DL2RPN ON3URT -11
051945 -11 1871  ON3URT DL2RPN R-06 (x2)
052100 -16  233  CQ ON3URT JO10                        a1 (x4)
054015  -8 1764  ON3URT SM7GIB JO65 (x5)

40m

UTC    dB Audio  Message
173015  +0 1595  ON3URT SP9BGL R-20 (x2)
173115  +3  463  ON3URT E70SZ JN84 (x6)
173445  -6  614  ON3URT G4YAN JO02
173445 -19  842  ON3URT M0VPW IO94
173515 -10  614  ON3URT G4YAN JO02 (x4)
174345  -9  464  ON3URT EB1ESK IN82

20m

UTC    dB Audio  Message
170645  -7  322  ON3URT R4CBQ LO32
085230  +0  293  CQ ON3URT JO10
085330 +13  293  UR5WCS ON3URT +13 (x2)
053115  -2  289  ON3URT R7OV KN87 (x4)
055330 -14  288  CQ ON3URT JO10
060645  +6 2777  ON3URT F1PBZ -15
062430  -8  288  CQ ON3URT JO10                        a1
062515 -14  964  ON3URT HA7TM/P JN97 (x2)
062600 -11  288  HA7TM/P ON3URT -02
062615  -2  964  ON3URT HA7TM/P JN97

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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