ON7CFX — 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: JO20

Receiver-side FT8 activity involving ON7CFX, decoded by SO8OO in southeastern Poland. 71 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-11-02.

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 71 FT8 messages attributed to ON7CFX as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (97%), followed by 80 m (1%) and 20 m (1%). Several six-hour UTC windows tied for the largest share (92%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (90%); the estimated median was +3 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+3 dB

Estimated median S/N

Bands

80m · 1 40m · 69 20m · 1

First attributed message: 2026-06-13
Last attributed message: 2026-11-02 19:22 UTC

Observed FT8 message patterns

Attributed sample: 71 messages
Active dates: 7 UTC dates
Estimated median S/N: +3 dB
Estimated 10th-90th percentile: -8 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 64.

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 ON7CFX in decoded directed-looking exchanges:

EA1ARJ · Spain HS0ZOY · Thailand JG3LGD · Japan ON3ANY · Belgium ON8LX · Belgium SP7TF · Poland UR4LG · Ukraine UX5UW · Ukraine YL2TM · Latvia YO6GLT · Romania ON4CFC · Belgium

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 ON7CFX

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: JO20 · 46 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,194 km (approx.)
Last such locator decoded: 2026-11-02 19:22 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	ON7CFX S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-28 19:13	40m	+4 / -	UX5UW	- / +10	2	✓ Closing fragment
10-28 19:00	40m	+3 / -	R4FDK	-2 / -18	5	Partial capture
10-28 18:53	40m	+10 / -	EA1ARJ	- / +5	2	✓ Closing fragment
10-28 18:45	40m	+5 / -	SP7TF	- / -4	2	✓ Closing fragment
10-28 18:43	40m	+5 / -	EA4IFO	- / -15	2	Partial capture
10-28 18:42	40m	- / -	IU5HIU	-1 / -	11	Partial capture
10-28 18:40	40m	- / -	IK0CHU	+2 / -	3	Partial capture
10-28 17:33	80m	- / -	SP4WJ	-2 / -	7	Partial capture
10-28 17:29	40m	- / -	IK0CHU	0 / -	2	Partial capture
10-28 17:28	40m	- / -	US0QV	-4 / -	2	Partial capture
10-28 17:26	40m	- / -	ON4CFC	+3 / -	3	Partial capture
10-28 17:25	80m	- / -	SP4WJ	-4 / -	11	Partial capture
10-28 17:24	80m	- / -	DO9SAM	+10 / -	5	Partial capture
10-28 17:23	80m	- / -	SP8ISO	-11 / -	5	Partial capture
10-28 17:22	80m	- / -	PA7ZZ	-12 / -	2	Partial capture
10-23 08:52	40m	-12 / +3	ON3ANY	-14 / +8	5	✓ Full exchange observed
10-19 07:26	40m	-14 / 0	ON8LX	-14 / -9	5	✓ Full exchange observed
10-12 18:09	40m	- / -11	UA4FEN	-6 / -	2	Partial capture
10-12 18:05	40m	0 / -	JG3LGD	- / -24	5	✓ Closing fragment
10-10 18:30	40m	+12 / -	HS0ZOY	- / -13	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
190545  +2  535  CQ ON7CFX JO20 (x4)
190845  +4  534  UR4LG ON7CFX RR73
190945  +4  534  CQ ON7CFX JO20 (x4)
191200  -4  535  ON7CFX PA2WDR -18
191215 +10  534  CQ ON7CFX JO20 (x2)
191315  +4  534  UX5UW ON7CFX +10 (x2)
192215  -8  359  JG3LGD ON7CFX JO20

80m

UTC    dB Audio  Message
172700  -4 3033  ON7CFX SP4WJ KO03 (x15)

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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