ON4ADG — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving ON4ADG, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 60m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-29 and 2026-08-26.

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 50 FT8 messages attributed to ON4ADG as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (86%), followed by 60 m (14%). Most decodes (92%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

60m · 7 20m · 43

First attributed message: 2026-06-29
Last attributed message: 2026-08-26 21:43 UTC

Observed FT8 message patterns

Attributed sample: 50 messages
Active dates: 4 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -12 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 35.

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 ON4ADG in decoded directed-looking exchanges:

IQ4JO · Italy ×2 9A6NTK · Croatia CR7BRV · Portugal EB3DBR · Spain EG2FLB · Spain EI6JMB · Ireland F1ODM · France F1PBZ · France F5RRS · France IK4LZH · Italy JY5CG · Jordan LZ2VQ · Bulgaria

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 ON4ADG

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 · 35 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,335 km (approx.)
Last such locator decoded: 2026-08-26 21:43 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	ON4ADG S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-26 21:43	60m	- / -4	DL7FD	+3 / -	3	✓ Closing fragment
08-26 17:07	20m	0 / -	8Z1IT	- / -	2	Partial capture
08-17 19:06	60m	- / -5	DF0JEN	-8 / -	3	✓ Closing fragment
08-17 18:36	40m	- / -2	DL6EL	-1 / -	3	✓ Closing fragment
08-17 18:24	40m	- / -11	SP9UPH	-2 / -	3	✓ Closing fragment
08-08 21:48	40m	- / -16	RN6MA	-9 / -	3	✓ Closing fragment
08-08 21:16	60m	- / +5	GW4FRX	+8 / -	2	✓ Closing fragment
08-08 21:12	60m	- / -	DJ6MN	-6 / -	2	✓ Closing fragment
08-08 21:07	60m	-24 / -	F5RAV	-14 / -	4	✓ Closing observed
08-08 21:00	60m	- / -9	9A4ZM	-5 / -	3	✓ Closing fragment
08-08 21:00	60m	- / -7	<...>	-2 / -	2	Partial capture
08-08 20:53	60m	-11 / -	EH1SGG	-14 / -	2	✓ Closing observed
08-08 15:27	20m	-4 / -	EG2FLB	- / +7	3	✓ Closing fragment
08-08 15:21	20m	-6 / -	SV1EAG	- / -1	4	✓ Closing fragment
08-08 15:18	20m	-5 / -7	9A6NTK	+5 / +8	4	✓ Full exchange observed
08-08 15:16	20m	-6 / -	EB3DBR	- / +6	3	✓ Closing fragment
08-08 15:08	20m	- / -	RZ4FWA	-14 / -	3	✓ Closing fragment
08-08 15:03	20m	-2 / -20	LZ2VQ	-16 / -	4	✓ Closing observed
07-24 18:35	20m	- / -10	F1ODM	-5 / -	2	✓ Closing fragment
07-22 20:07	20m	- / -3	F5RRS	-14 / -	3	✓ Closing fragment
07-22 17:46	20m	- / -14	F1PBZ	-10 / -	2	✓ Closing fragment
07-22 17:38	20m	- / -17	JY5CG	-20 / -	3	✓ Closing fragment
07-22 17:31	20m	- / -21	JY5CG	-16 / -	2	Partial capture
07-20 21:57	40m	- / +10	HB9CNU	-14 / -	2	✓ Closing fragment
07-20 21:50	40m	- / -4	IQ4JO	+3 / -	3	✓ Closing fragment
07-20 21:47	40m	- / -5	DL9KM	-13 / -	3	✓ Closing fragment
07-20 15:02	40m	- / -18	SP9D	-12 / -	3	✓ Closing fragment
07-03 20:33	20m	- / -	IK4LZH	-8 / -	2	✓ Closing fragment
06-29 20:16	20m	-2 / -14	UB3KEH	-14 / -	4	✓ Closing observed
06-29 20:11	20m	- / -14	IQ4JO	+8 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
215445  -6 2021  ON4ADG TF3VS -19

60m

UTC    dB Audio  Message
210830 -15 1533  ON4ADG F5RAV 73
210915 -23 1885  GI4NKB ON4ADG -03
210945 -23 1885  CQ ON4ADG JO10                        a1
211200  -7  716  ON4ADG DJ6MN +18 (x2)
211600  +7  565  ON4ADG GW4FRX +05 (x2)
190600  -6  948  ON4ADG DF0JEN JO50 (x3)
214330 -19 2376  CQ ON4ADG JO10
214345  +4 2613  ON4ADG DL7FD JO62 (x3)
214845 -22 1534  ON4ADG DL3LD 73

20m

UTC    dB Audio  Message
152145 -10 2759  SV1EAG ON4ADG JO10 (x3)
152700  -5 2759  EG2FLB ON4ADG JO10 (x3)
165030  -3 1618  ON4ADG CT1BFP R-01
165945  +0  310  ZS6KVZ ON4ADG JO10
170045  +2  311  CQ ON4ADG JO10                        a1 (x4)
170745  +0  310  8Z1IT ON4ADG JO10 (x2)
170915  -7  310  CQ ON4ADG JO10

40m

UTC    dB Audio  Message
231115 -12  706  ON4ADG SQ3MQD 73
180200 -19 1549  ON4ADG DK9BF JO42
214800 -11 2290  ON4ADG RN6MA -16 (x3)
215030  -4 2785  ON4ADG F1PBZ -10
215730 -21 1852  ON4ADG RR73; SP2LPI <...> -12
182400  -3 2603  ON4ADG SP9UPH JO90 (x3)
183130 -24 1326  ON4ADG OE9GWV JN47
183600  +3 2151  ON4ADG DL6EL JN57 (x3)
184100 -15 2602  ON4ADG IN3IZQ 73

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee