ON5CDG — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving ON5CDG, decoded by SO8OO in southeastern Poland. 414 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-30.

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 414 FT8 messages attributed to ON5CDG as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (51%), followed by 10 m (26%) and 20 m (17%). Most decodes (76%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.2 dB.

Overview

414

Messages attributed

UTC dates decoded

Active 15-min windows

-10.2 dB

Estimated median S/N

Bands

80m · 23 40m · 213 20m · 69 10m · 109

First attributed message: 2026-06-11
Last attributed message: 2026-08-30 18:41 UTC

Observed FT8 message patterns

Attributed sample: 414 messages
Active dates: 14 UTC dates
Estimated median S/N: -10.2 dB
Estimated 10th-90th percentile: -20 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 100, moderate (-15 to -9 dB) 159, strong (≥ -8 dB) 155.

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 ON5CDG in decoded directed-looking exchanges:

E70SZ · Bosnia-Herzegovina ×2 EA5JKM · Spain IK1RQX · Italy S57WO · Slovenia SP0LPR · Poland UX7QV · Ukraine 9A6NTK · Croatia BU2FW · Taiwan KO1K · United States R2ZDO · European Russia RY3PAG · European Russia TA6MMI · Asiatic Turkey

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 ON5CDG

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 · 259 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,335 km (approx.)
Last such locator decoded: 2026-08-30 18:41 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	ON5CDG S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 18:28	40m	- / -1	PD2RAL	-7 / -	3	✓ Closing fragment
08-25 19:47	40m	-8 / -	OS4K	- / -5	2	✓ Closing fragment
08-23 17:37	20m	-3 / -	IU6UBB	- / -	2	Partial capture
08-23 17:19	40m	-18 / -	S56LKP	- / -	2	Partial capture
08-23 17:00	40m	-16 / -	R1530IG	- / -	2	Partial capture
08-23 16:59	40m	-14 / -	II7MGXX	- / -	2	Partial capture
08-23 16:57	40m	-16 / -	DG4ST	- / -	2	✓ Closing fragment
08-23 16:55	40m	-17 / -	M0PTN	- / -8	3	✓ Closing fragment
08-23 16:52	40m	-19 / -	EI9KF	- / -4	4	✓ Closing fragment
08-23 16:49	40m	-17 / -	M9LDX	- / -	2	✓ Closing fragment
08-20 19:57	40m	-10 / -	G0WTZ	- / -	3	Partial capture
08-18 19:25	40m	-16 / -8	UT6HN	-8 / -	2	Partial capture
08-18 19:25	40m	- / -16	OL900CO	-8 / -	3	Partial capture
08-18 19:00	40m	- / -8	DL6CHF	-4 / -	2	✓ Closing fragment
08-18 17:48	40m	- / -	DL9KM	-18 / -	6	Partial capture
08-18 17:46	40m	- / -8	S57NCP	-9 / -	3	✓ Closing fragment
08-18 17:25	40m	- / -11	HA1DUQ	-18 / -	2	✓ Closing fragment
08-18 17:16	40m	- / -17	RZ6ALZ	-22 / -	2	✓ Closing fragment
08-18 17:12	40m	- / -11	SQ8AQN	-8 / -	2	✓ Closing fragment
08-18 17:10	40m	- / -3	DL9OE	-5 / -	2	✓ Closing fragment
08-18 16:56	40m	- / +4	HA1RJ	0 / -	2	✓ Closing fragment
08-18 14:53	20m	- / -	QSY	-16 / -	2	Partial capture
08-17 23:29	40m	-11 / -	W3UCA	- / -17	2	Partial capture
08-17 23:15	40m	- / -3	IZ0MIT	-8 / -	2	✓ Closing fragment
08-17 23:08	40m	-14 / -	WP4TNV	- / -11	2	Partial capture
08-17 23:04	40m	-12 / -15	UA4CCH	-22 / -2	5	✓ Full exchange observed
08-17 22:57	40m	-13 / -	N1SK	- / -	3	Partial capture
08-17 22:52	40m	-8 / -	EA3DNC	- / -	2	✓ Closing fragment
08-17 22:49	40m	-11 / +6	DL6EL	-5 / -	5	✓ Full exchange observed
08-17 22:24	40m	- / -13	DL2VAH	-7 / -	3	✓ Closing fragment
08-17 22:06	40m	- / -9	S56KO	0 / -	4	✓ Closing fragment
08-17 21:53	40m	- / -9	F1HFP	-11 / -	2	✓ Closing fragment
08-17 21:51	40m	- / -5	S58Z	-4 / -	2	✓ Closing fragment
08-17 20:39	40m	- / -3	DK0ACI	-6 / -	2	✓ Closing fragment
08-17 19:08	20m	+4 / -	R2BRD	- / -9	4	Partial capture
08-17 19:05	20m	+3 / -	N1SK	- / -12	3	Partial capture
08-17 19:02	20m	+4 / -	KO1K	- / -9	3	✓ Closing fragment
08-17 19:00	20m	+1 / -	NP4TX	- / -	3	Partial capture
08-17 18:58	20m	+3 / -	5P1KZX	- / -	3	Partial capture
08-17 18:57	20m	+4 / -	LZ1DIO	- / -	2	Partial capture
08-17 18:55	20m	+4 / -	BU2FW	- / -16	3	✓ Closing fragment
08-17 18:52	20m	+2 / -	R6DZJ	- / -	2	Partial capture
08-17 18:48	20m	-2 / -	A93MO	- / -	2	Partial capture
08-17 18:46	20m	-4 / -	YL2KF	- / +9	3	✓ Closing fragment
08-17 18:43	20m	0 / -18	TA6MMI	-9 / -8	9	✓ Full exchange observed
08-17 18:42	20m	-3 / -	UA9QFF	- / -16	3	✓ Closing fragment
08-17 18:40	20m	-1 / -	RY3PAG	- / -7	3	✓ Closing fragment
08-17 18:39	20m	-1 / -	R9WXK	- / -	2	Partial capture
08-15 21:28	40m	-5 / -	RX3ASQ	- / -	2	Partial capture
08-15 21:25	40m	+2 / -	4X5JK	- / -12	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
194715  -7  696  CQ ON5CDG JO10
194745  -6  695  OS4K ON5CDG R-05 (x2)
194845  -8  695  CQ ON5CDG JO10 (x4)
182845  -5 1263  ON5CDG PD2RAL -01 (x3)
183700 -11  703  CQ ON5CDG JO10                        a1 (x2)
183745 -11 1641  ON5CDG ON5ACO +06
184100 -10  704  CQ ON5CDG JO10 (x2)

20m

UTC    dB Audio  Message
190530  +5  771  N1SK ON5CDG JO10 (x3)
190830  +6  771  R2BRD ON5CDG JO10 (x4)
145300 -17  906  ON5CDG QSY (x2)
145500 -15  906  ON5CDG MI7RDK IO74
173530  +2 1284  UA4POO ON5CDG JO10
173700  -2 1284  IU6UBB ON5CDG JO10 (x2)
161830  -5 1287  ON5CDG R7OV R-12
162100 -10 2195  ON5CDG BI4XDT PM01

80m

UTC    dB Audio  Message
211215  -7  562  DO6THI ON5CDG JO10
211230 -14 1501  ON5CDG DO6THI -16
211245 -11  562  DO6THI ON5CDG R-14 (x4)
211445  -5  562  DO7RMA ON5CDG JO10
211500  -4 1804  ON5CDG DO7RMA -02
211515 -10  562  DO7RMA ON5CDG R+00
211530  +0 1804  ON5CDG DO7RMA RR73
211545  -4  562  DO7RMA ON5CDG 73
211615  -7  562  DO2PY ON5CDG JO10
211630 -15  829  ON5CDG DO2PY -10
211645  -9  562  DO2PY ON5CDG R-08
211700 -10  829  ON5CDG DO2PY RR73

10m

UTC    dB Audio  Message
163430 -20 1719  CQ ON5CDG JO10 (x4)
164100 -20 1719  UX7QV ON5CDG RR73
164200 -22 1719  CQ ON5CDG JO10 (x3)
164315  -9 2054  ON5CDG PD9FLX JO22
164330 -20 1719  CQ ON5CDG JO10 (x4)
164815 -22 1823  ON5CDG ON7DE JO20
162945 -12  935  ON5CDG R6DWD -16

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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