KD3CDS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN30

Receiver-side FT8 activity involving KD3CDS, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-31 and 2026-09-21.

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 50 FT8 messages attributed to KD3CDS as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (98%), followed by 20 m (2%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 49 20m · 1

First attributed message: 2026-08-31
Last attributed message: 2026-09-21 02:34 UTC

Observed FT8 message patterns

Attributed sample: 50 messages
Active dates: 2 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -14 to -6 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 26, strong (≥ -8 dB) 24.

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 KD3CDS in decoded directed-looking exchanges:

DK7ZT · Fed. Rep. of Germany I1RJP · Italy KE9EUV · United States KF8EBV · United States MI7XHT · Northern Ireland N9KO · United States OH1MRE · Finland PI4DX · Netherlands SP5EXA · Poland UT9NA · Ukraine W9MDM · United States W9ZPL · United States

Most frequent locator attributed to KD3CDS

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: FN30 · 12 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,990 km (approx.)
Last such locator decoded: 2026-09-21 02:20 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	KD3CDS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 02:27	40m	-10 / -10	MI7XHT	-5 / -6	8	✓ Full exchange observed
09-21 02:22	40m	-14 / -	KR4LQH	- / +8	2	Partial capture
09-21 02:17	40m	- / -	IW9FRA	-2 / -	11	Partial capture
09-21 02:13	40m	-10 / -	KF8EBV	- / +6	2	✓ Closing fragment
09-21 02:11	40m	- / -14	UA6FM	+12 / -	6	Partial capture
09-21 02:11	40m	-9 / -	OH1MRE	- / -13	3	✓ Closing fragment
09-21 02:09	40m	-10 / -	UT9NA	- / -6	2	✓ Closing fragment
09-21 01:49	40m	- / -17	R7FG	-1 / -	3	Partial capture
09-21 01:48	40m	-8 / -	KE9EUV	- / -1	2	✓ Closing fragment
09-21 01:46	40m	-8 / +1	EB3JT	-1 / 0	8	Partial capture
09-21 01:45	40m	-8 / -	PI4DX	- / -6	2	✓ Closing fragment
09-21 01:41	40m	- / -	EB3JT	-2 / -	3	Partial capture
09-21 01:35	40m	-7 / -	WN8J	- / -8	4	✓ Closing fragment
09-21 01:31	40m	-6 / -	W9MDM	- / +5	3	✓ Closing fragment
09-21 01:31	40m	- / -	MI7XHT	-7 / -	3	Partial capture
09-21 01:30	40m	-10 / -	I1RJP	- / -22	2	✓ Closing fragment
09-20 01:56	40m	- / -	F5PBG	-11 / -	2	Partial capture
09-20 01:55	40m	- / -	MI7XHT	-8 / -	3	Partial capture
09-20 01:43	40m	- / -	IW9FRA	-14 / -	8	Partial capture
09-20 01:40	40m	- / -	F5PBG	-6 / -	3	Partial capture
09-20 01:33	40m	- / -	F5PBG	-6 / -	2	Partial capture
09-20 01:33	40m	- / -7	ON1DGN	-5 / -	4	Partial capture
08-31 16:15	20m	- / -18	RX6DY	+10 / -	3	Partial capture
08-27 21:53	40m	- / -	LB7ZG	+7 / -	2	Partial capture
08-27 21:50	40m	- / -	SV1DKR	-8 / -	2	Partial capture
08-27 21:49	40m	- / -21	DK7ZT	-6 / -	2	✓ Closing fragment
08-27 21:49	40m	- / -	EA3ENB	-8 / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
022100  -1  770  KD3CDS IW9FRA JM68 (x4)
022245 -14  594  KR4LQH KD3CDS +08 (x2)
022615 -15  594  PY5DC KD3CDS R-25
022700  -6 2479  KD3CDS MI7XHT IO64 (x2)
022915 -14  594  MI7XHT KD3CDS -06
023100  -5 2480  KD3CDS MI7XHT R-10
023145  -9  594  MI7XHT KD3CDS RR73 (x4)

20m

UTC    dB Audio  Message
180200 -21 1868  KD3CDS F1PPH JN25
161430 -15 1028  F5ADE KD3CDS FN30
161545 +10 1888  KD3CDS RX6DY -18 (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.

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