KD1AB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM16

Receiver-side FT8 activity involving KD1AB, decoded by SO8OO in southeastern Poland. 27 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-09-09.

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 KD1AB as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 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

40m · 27

First attributed message: 2026-09-05
Last attributed message: 2026-09-09 23:46 UTC

Observed FT8 message patterns

Attributed sample: 27 messages
Active dates: 3 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -20 to -11 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 16, 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 KD1AB in decoded directed-looking exchanges:

TK5K · Corsica AC9HP · United States DL3MIB · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany EX7CQ · Kyrgyzstan F5MSE · France HB9EFK · Switzerland OK1WCF · Czech Republic RN6HK · European Russia SP7NC · Poland US1CR · Ukraine YO6LM · Romania

Most frequent locator attributed to KD1AB

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: FM16 · 3 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,551 km (approx.)
Last such locator decoded: 2026-09-09 23:41 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	KD1AB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-09 23:45	40m	-16 / -	DL9KM	- / -14	2	✓ Closing fragment
09-09 23:44	40m	-18 / -	AC9HP	- / -24	2	✓ Closing fragment
09-09 23:44	40m	- / -	IW9FRA	-10 / -	6	Partial capture
09-09 23:43	40m	-19 / -3	F5MSE	-2 / -	3	✓ Closing observed
09-09 23:41	40m	-18 / -	YO6LM	- / -14	4	✓ Closing fragment
09-09 23:38	40m	-18 / -2	HB9EFK	-20 / -8	6	✓ Full exchange observed
09-05 23:58	40m	-12 / -	SP7NC	- / -16	5	✓ Closing fragment
09-05 23:57	40m	-14 / -	US1CR	- / -20	2	✓ Closing fragment
09-05 23:56	40m	-12 / -	DL3MIB	- / -13	2	✓ Closing fragment
09-05 23:55	40m	-12 / -14	RN6HK	+2 / -10	6	✓ Full exchange observed
09-05 23:53	40m	-12 / -15	EX7CQ	+2 / -14	7	✓ Full exchange observed
09-05 23:48	40m	- / +4	DH8GV	-3 / -	4	Partial capture
09-05 23:48	40m	- / -	F5PBG	-4 / -	2	Partial capture
09-05 23:48	40m	- / -	UR4QWW	-3 / -	7	Partial capture
07-19 23:14	20m	- / -2	TK5K	-4 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
234230 -19 1580  YO6LM KD1AB R-14 (x2)
234315  -1 1131  KD1AB F5MSE -03 (x2)
234400 -19 1581  F5MSE KD1AB 73
234415  -7  954  KD1AB IW9FRA JM68
234430 -20 1580  AC9HP KD1AB -24
234445 -11  954  KD1AB IW9FRA JM68
234500 -16 1580  AC9HP KD1AB RR73
234515  -9  955  KD1AB IW9FRA JM68
234530 -18 1580  DL9KM KD1AB -14
234545 -12  954  KD1AB IW9FRA JM68
234600 -15 1580  DL9KM KD1AB RR73
234615 -10  955  KD1AB IW9FRA JM68 (x2)

20m

UTC    dB Audio  Message
231400  -4  301  KD1AB TK5K -02 (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.

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