KN4UDS — 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: United States Most frequent locator attributed to this token: EM60

Receiver-side FT8 activity involving KN4UDS, decoded by SO8OO in southeastern Poland. 39 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-20.

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 39 FT8 messages attributed to KN4UDS as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -13 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

20m · 39

First attributed message: 2026-06-10
Last attributed message: 2026-08-20 05:09 UTC

Observed FT8 message patterns

Attributed sample: 39 messages
Active dates: 2 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -18 to -10 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 32, 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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with KN4UDS in decoded directed-looking exchanges:

4X5MZ · Israel DL3MIB · Fed. Rep. of Germany EA5ISM · Spain

Most frequent locator attributed to KN4UDS

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: EM60 · 7 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,661 km (approx.)
Last such locator decoded: 2026-08-20 05:09 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	KN4UDS S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-20 05:20	20m	- / -19	DL3MIB	+17 / -	5	✓ Closing fragment
08-20 05:19	20m	- / -7	F5RAV	-20 / -	2	Partial capture
08-20 05:16	20m	- / -7	IK2SAR	-21 / -	2	Partial capture
08-20 05:14	20m	- / -6	F5RAV	-14 / -	5	Partial capture
08-20 05:14	20m	- / -25	OD5ET	+7 / -	3	Partial capture
08-20 05:09	20m	-21 / -	LZ3BS	- / -	2	Partial capture
08-20 05:00	20m	- / -13	4X5MZ	-13 / -	5	✓ Closing fragment
08-20 04:58	20m	- / -11	EA5ISM	-9 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
051515  +7  686  KN4UDS OD5ET -25
051515 -11 1426  KN4UDS F5RAV JN09
051545  +7  686  KN4UDS OD5ET -25
051615 -22 1884  KN4UDS IK2SAR -07
051615 -14 1425  KN4UDS F5RAV R-06
051645 -20 1884  KN4UDS IK2SAR -07
051645 -17 1426  KN4UDS F5RAV R-06 (x3)
052015 +17 1111  KN4UDS DL3MIB JN57
052045 -20 1426  KN4UDS F5RAV R-07
052045 +12 1111  KN4UDS DL3MIB JN57 (x4)

CW

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

Explore CW reception at SO8OO

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