ON3UI — 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: JN29

Receiver-side FT8 activity involving ON3UI, decoded by SO8OO in southeastern Poland. 48 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-03.

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 48 FT8 messages attributed to ON3UI as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (52%), followed by 20 m (25%) and 40 m (15%). Most decodes (60%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (83%); the estimated median was -20 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-20 dB

Estimated median S/N

Bands

80m · 25 40m · 7 20m · 12 10m · 4

First attributed message: 2026-06-06
Last attributed message: 2026-10-03 23:42 UTC

Observed FT8 message patterns

Attributed sample: 48 messages
Active dates: 6 UTC dates
Estimated median S/N: -20 dB
Estimated 10th-90th percentile: -24 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 5.

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 ON3UI in decoded directed-looking exchanges:

DK4RH · Fed. Rep. of Germany K1RH · United States PC2F · Netherlands SP6FME · Poland DK9PH · Fed. Rep. of Germany DL1UDO · Fed. Rep. of Germany DO1OAS · Fed. Rep. of Germany F5RAV · France ON4MAP · Belgium PC2J · Netherlands PE2JMR · Netherlands UR1CCT · Ukraine

Most frequent locator attributed to ON3UI

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: JN29 · 28 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,206 km (approx.)
Last such locator decoded: 2026-10-03 23:42 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	ON3UI S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-03 23:16	80m	- / -17	UR1CCT	+13 / -	2	✓ Closing fragment
10-03 23:10	80m	-20 / -16	F5RAV	-3 / -17	3	✓ Full exchange observed
10-03 23:06	80m	- / -9	PE2JMR	-1 / -	3	✓ Closing fragment
10-03 23:01	80m	-24 / -24	DL1UDO	-2 / +9	5	✓ Full exchange observed
10-03 22:53	80m	- / -12	ON4MAP	-2 / -	3	✓ Closing fragment
10-03 22:48	80m	-19 / -2	M0MLS	-4 / -9	2	Partial capture
10-03 22:42	80m	-20 / -25	DK9PH	+14 / -7	5	✓ Full exchange observed
10-03 22:38	80m	-20 / -	DO1OAS	-6 / -4	4	✓ Closing observed
10-03 22:37	80m	-24 / -18	PC2J	-9 / -	3	✓ Closing observed
10-03 22:27	40m	- / -18	K1RH	-15 / -	2	✓ Closing fragment
09-11 16:32	40m	- / -16	S51PV	-10 / -	4	Partial capture
09-11 16:26	40m	- / -13	DK4RH	-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
230230 -24 1557  DL1UDO ON3UI RR73
230245  +2 1109  ON3UI DL1UDO 73
230645  -1  658  ON3UI PE2JMR JO33 (x3)
231030 -16 2113  F5RAV ON3UI -17
231045  -3 1639  ON3UI F5RAV R-16
231100 -24 2113  F5RAV ON3UI RR73
231245 +18  564  ON3UI UR1CCT KN69 (x3)
233530 -23 2113  CQ ON3UI JN29 (x4)

40m

UTC    dB Audio  Message
162500 -21 1034  PC2F ON3UI RR73
162530 -19 1034  CQ ON3UI JN29
162645  -4 1033  ON3UI DK4RH R-13
162715  -8 2189  ON3UI S51PV JN76
162715  -7 1033  ON3UI DK4RH 73
163030 -18 1034  DK5EO ON3UI +03
163215 -11 2194  ON3UI S51PV R-16 (x2)
163300 -19 2188  PC1K ON3UI +05
163315 -11 2194  ON3UI S51PV R-16 (x2)
163500 -19 2188  CQ ON3UI JN29
222715 -16 2079  ON3UI K1RH -18 (x2)
223015 -20 1591  ON3UI N2PKN FM29

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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