ON4CVL — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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

Receiver-side FT8 activity involving ON4CVL, decoded by SO8OO in southeastern Poland. 303 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 49 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-10-22.

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 303 FT8 messages attributed to ON4CVL as the transmitting token by decoded message structure across 49 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (42%), followed by 20 m (39%) and 40 m (16%). The busiest six-hour window was 02:00-08:00 UTC, containing 47% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13.9 dB.

Overview

303

Messages attributed

UTC dates decoded

Active 15-min windows

-13.9 dB

Estimated median S/N

Bands

160m · 1 80m · 128 40m · 49 20m · 119 10m · 6

First attributed message: 2026-06-12
Last attributed message: 2026-10-22 07:18 UTC

Observed FT8 message patterns

Attributed sample: 303 messages
Active dates: 49 UTC dates
Estimated median S/N: -13.9 dB
Estimated 10th-90th percentile: -23 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 126, moderate (-15 to -9 dB) 86, strong (≥ -8 dB) 91.

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 ON4CVL in decoded directed-looking exchanges:

SQ9M · Poland ×2 DO6MFD · Fed. Rep. of Germany ×2 7Q6UJ · Malawi PI4DX · Netherlands AO5FSB · Spain CR5VP · Portugal CT1END/P · Portugal EA5JQE · Spain EA5KAI · Spain EA7R · Spain EB3JT · Spain EC3A · Spain

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 ON4CVL

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 · 141 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,335 km (approx.)
Last such locator decoded: 2026-10-22 07:18 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	ON4CVL S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 07:13	80m	-24 / +3	DO1OAS	-16 / -16	5	✓ Full exchange observed
10-22 06:57	80m	-19 / -	ON6CQ	- / -	7	Partial capture
10-22 06:54	80m	- / -	OK2CNI	+8 / -	4	Partial capture
10-21 05:51	40m	-18 / -	ON3ANY	- / -	3	Partial capture
10-20 20:17	40m	-14 / -18	R7ZY	+4 / -6	7	✓ Full exchange observed
10-20 20:01	40m	-13 / -	OS7P	- / -	5	Partial capture
10-17 21:22	160m	-23 / -11	PI4DX	+8 / -	3	✓ Closing observed
10-17 18:08	40m	-15 / -8	PI9TP/J	0 / -5	2	Partial capture
10-17 14:21	40m	- / -2	HB9HJI	-15 / -	3	Partial capture
10-17 07:36	80m	- / +7	ON3ANY	-21 / -	2	✓ Closing fragment
10-17 06:24	80m	-18 / -	ON8LX	- / -	5	Partial capture
10-16 07:13	80m	-20 / -	GM6URC	- / -11	2	✓ Closing fragment
10-15 19:17	40m	- / -11	HB9TLL	-9 / -	3	✓ Closing fragment
10-15 13:00	40m	- / -4	DG1HBA	-11 / -	2	✓ Closing fragment
10-14 16:50	40m	-14 / -	F4HSB	- / -4	2	✓ Closing fragment
10-14 16:18	40m	-14 / -7	F1DOA	-11 / -	2	Partial capture
10-13 15:57	40m	-22 / -	OH7ML	- / -	5	Partial capture
10-13 14:51	40m	- / 0	PA1GUZ	-7 / -	2	✓ Closing fragment
10-03 03:09	40m	-16 / -	K2TTA	- / -18	5	✓ Closing fragment
10-03 03:00	80m	- / -17	R3ICU	-6 / -	3	Partial capture
10-03 02:47	80m	- / -	DK8HC	+4 / -	5	Partial capture
10-03 02:47	80m	-14 / -12	R3ICU	-3 / -20	15	Partial capture
10-03 02:45	80m	-18 / -18	SX2LGT	-7 / -5	7	✓ Full exchange observed
10-01 19:03	80m	- / -	SP5DFK	-6 / -	2	Partial capture
10-01 19:00	80m	-12 / -	ON7KEI	-10 / -	2	✓ Closing observed
10-01 18:36	80m	-14 / -	YT2ZE	- / -	2	Partial capture
10-01 18:34	80m	-8 / -17	OE6GBG	-1 / -13	5	✓ Full exchange observed
10-01 18:33	80m	-16 / -16	CT7AUT	-20 / -17	4	✓ Full exchange observed
10-01 18:29	80m	-6 / -	DO6MFD	-13 / +2	3	✓ Closing observed
09-30 05:20	80m	-24 / -	DO7TTR	- / -7	2	✓ Closing fragment
09-23 19:11	40m	- / -5	SM7TZK	-8 / -	2	✓ Closing fragment
09-17 20:10	80m	-13 / -8	II8IHBC	-6 / -13	2	Partial capture
09-17 20:07	80m	-18 / 0	DO1JMA	-24 / -15	5	✓ Full exchange observed
09-17 20:04	80m	-15 / -	DO1RWM	-17 / 0	4	✓ Closing observed
09-17 19:56	80m	-16 / -	G0TSM/P	- / -18	2	Partial capture
09-17 19:47	80m	+4 / +9	PA0RDT	-24 / -6	2	Partial capture
09-17 19:38	80m	-14 / -	SO100PKP	- / -	2	Partial capture
09-17 19:38	80m	- / -10	DF7NO	+2 / -	8	✓ Closing fragment
09-17 19:36	80m	-17 / -10	EH3ST	-17 / -2	3	Partial capture
09-09 19:18	80m	- / -5	HB9DGZ	+4 / -	2	Partial capture
09-09 19:14	80m	-14 / -1	SN40KZE	+5 / +5	3	Partial capture
09-09 19:11	80m	-13 / -4	IN3WZS	-4 / -12	6	✓ Full exchange observed
09-09 19:10	80m	- / -3	OZ1GC	-6 / -	2	✓ Closing fragment
09-09 19:07	80m	-13 / -	OZ7CL	- / -15	3	✓ Closing fragment
09-09 19:05	80m	-10 / -1	SQ100PKP	+15 / +2	3	Partial capture
09-04 17:47	40m	-12 / -	EA3ACQ	- / -	4	Partial capture
09-04 17:37	40m	- / -4	DG0OFT	0 / -	2	✓ Closing fragment
09-04 17:34	40m	-18 / -	EG3PDA	- / -15	2	Partial capture
09-04 06:52	40m	- / -13	DB3EH	-12 / -	2	✓ Closing fragment
09-03 09:12	40m	- / -1	PD9DX	-16 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
065730 -15 1961  ON6CQ ON4CVL JO10 (x6)
071230 -23 1679  CQ ON4CVL JO10
071345 -17 1679  ON4CVL DO1OAS R+03
071400 -24 1679  DO1OAS ON4CVL -16
071415 -16 1679  ON4CVL DO1OAS R+03
071430 -24 1678  DO1OAS ON4CVL RR73
071445 -14 1679  ON4CVL DO1OAS 73
071500 -24 1678  ON6CQ ON4CVL -04
071700 -22 1696  CQ ON4CVL JO10 (x2)

40m

UTC    dB Audio  Message
201530 -11 2309  CQ ON4CVL JO10 (x4)
201715  -1 2438  ON4CVL R7ZY KN98
201730 -12 2310  YL3ASK ON4CVL -24
201745  +0 2438  ON4CVL R7ZY KN98 (x2)
201830 -14 2309  R7ZY ON4CVL -06
201845  +6 2439  ON4CVL R7ZY R-18
201900 -15 2309  R7ZY ON4CVL RR73
201915  +7 2439  ON4CVL R7ZY 73
055100 -18 2318  ON3ANY ON4CVL JO10 (x3)

160m

UTC    dB Audio  Message
212215  +9 2122  ON4CVL PI4DX -11 (x2)
212300 -23 2122  PI4DX ON4CVL 73

20m

UTC    dB Audio  Message
074015  +9 2400  YO3RU ON4CVL JO10
074030  +5 2399  ON4CVL YO3RU -08
074045  +8 2400  YO3RU ON4CVL R+04
074100  +1 2398  ON4CVL YO3RU RR73
074115  +9 2393  YO3RU ON4CVL 73
105900  -4 1894  EA4ILV ON4CVL JO10 (x2)
145845 +12 2443  EA7R ON4CVL JO10 (x3)
150030  -3 2443  ON4CVL EA7R RR73
150045  +6 2446  EA7R ON4CVL 73
150145  +7 1370  EA5KAI ON4CVL JO10 (x3)

10m

UTC    dB Audio  Message
145300 -17 2228  ON4CVL 7Q6UJ +07 (x2)
175215 -19 1702  ON4CVL IU5TUG +02
184145  -8  968  ON4CVL CT3MD IM13 (x3)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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