ON5KDX — 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 ON5KDX, decoded by SO8OO in southeastern Poland. 27 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-20 and 2026-08-27.

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 27 FT8 messages attributed to ON5KDX as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (93%), followed by 40 m (7%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (96%); the estimated median was -24 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-24 dB

Estimated median S/N

Bands

80m · 25 40m · 2

First attributed message: 2026-08-20
Last attributed message: 2026-08-27 04:13 UTC

Observed FT8 message patterns

Attributed sample: 27 messages
Active dates: 4 UTC dates
Estimated median S/N: -24 dB
Estimated 10th-90th percentile: -24 to -18 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 26, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 0.

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 ON5KDX in decoded directed-looking exchanges:

CT7AUT · Portugal DL5NDD · Fed. Rep. of Germany PA2RO · Netherlands DL5EBS · Fed. Rep. of Germany ON7GB · Belgium 9A4ZM · Croatia DL1UDO · Fed. Rep. of Germany DO1OAS · Fed. Rep. of Germany DO1THG · Fed. Rep. of Germany DO9BAU · Fed. Rep. of Germany EA3AKY · Spain HG8LXL · Hungary

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 ON5KDX

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 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,194 km (approx.)
Last such locator decoded: 2026-08-27 04:13 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	ON5KDX S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 05:22	80m	- / -	DL1UDO	-8 / -	3	✓ Closing fragment
08-30 05:19	80m	- / -16	DO1OAS	-13 / -	2	✓ Closing fragment
08-30 05:13	80m	- / -	DO1THG	-22 / -	2	✓ Closing fragment
08-22 05:56	40m	- / -16	DL5NDD	-4 / -	4	✓ Closing fragment
08-22 05:54	40m	- / -2	PA2RO	-6 / -	2	✓ Closing fragment
08-20 03:43	80m	-24 / -7	EA3AKY	-10 / 0	5	✓ Full exchange observed
08-20 03:39	80m	-24 / -18	9A4ZM	-5 / -	5	✓ Closing observed
08-20 03:39	80m	-24 / -10	SP9UPH	+14 / +3	7	✓ Full exchange observed
08-20 03:38	80m	-24 / -16	SP9IZV	+6 / -2	6	✓ Full exchange observed
08-20 03:35	80m	- / -13	SP3HGD	-15 / -	4	✓ Closing fragment
08-20 03:32	80m	- / -18	HG8LXL	-5 / -	3	✓ Closing fragment
08-20 03:30	80m	- / -	DL1UDO	-7 / -	3	Partial capture
08-20 03:29	80m	- / -	HG8LXL	+2 / -	2	Partial capture
08-20 03:27	80m	-24 / -16	UR1CCT	+7 / +2	4	✓ Full exchange observed
08-20 03:25	80m	- / -10	OE5DML	-4 / -	5	✓ Closing fragment
08-20 03:25	80m	-24 / -15	DO9BAU	+4 / +2	6	✓ Full exchange observed
08-20 03:24	80m	-24 / -8	IQ4JO	-6 / +7	5	✓ Full exchange observed
08-20 03:11	80m	-24 / -	VE9JMC	- / -	3	Partial capture
08-18 20:32	60m	- / -	DL5DQZ	+1 / -	4	Partial capture
08-18 20:30	60m	- / -	SN1A	-4 / -	2	Partial capture
08-18 20:27	60m	- / -	9A4ZM	+6 / -	2	Partial capture
08-18 20:27	60m	- / -9	ON7GB	+4 / -	10	✓ Closing fragment
08-18 20:25	60m	- / -4	DL5EBS	-3 / -	5	✓ Closing fragment
08-17 09:32	20m	- / +6	CT7AUT	-6 / -	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
034345  -9  506  ON5KDX EA3AKY R-07
034400 -24 1708  EA3AKY ON5KDX RR73
034415  -9  506  ON5KDX EA3AKY 73
034600 -24 1708  CQ ON5KDX JO20 (x2)
034800 -24 2341  YO6LM ON5KDX JO20
050845 -19 1179  ON5KDX OZ1HYM -17
041300 -16  801  CT2HEX ON5KDX JO20
051330 -24 1754  ON5KDX DO1THG JO43 (x2)
051930 -13 1754  ON5KDX DO1OAS -16 (x2)
052230  -9  901  ON5KDX DL1UDO JO31 (x3)

40m

UTC    dB Audio  Message
055430  -4 1151  ON5KDX PA2RO R-02 (x2)
055600  -5 2088  ON5KDX DL5NDD JN58 (x3)
055700  -5  741  ON5KDX DD7EE JO41
055730  -3 2088  ON5KDX DL5NDD 73
055745 -18 1799  CQ ON5KDX JO20
053445  -9  790  KJ5PTH ON5KDX JO20

60m

UTC    dB Audio  Message
202815  +8  935  ON5KDX 9A4ZM JN86
202845  +4  535  ON5KDX ON7GB R-09 (x4)
203045  -9 1330  ON5KDX SN1A JO73
203045  +2  330  ON5KDX ON7GB 73 (x2)
203130  +1 1330  ON5KDX SN1A JO73
203145  +5  330  ON5KDX ON7GB 73 (x2)
203245  +1 1013  ON5KDX DL5DQZ JO61 (x4)

20m

UTC    dB Audio  Message
093200  -3 1507  ON5KDX CT7AUT +06 (x2)

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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