KR4DWD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EL88

Receiver-side FT8 activity involving KR4DWD, decoded by SO8OO in southeastern Poland. 1,367 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 16 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-26.

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 1,367 FT8 messages attributed to KR4DWD as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (90%), followed by 40 m (9%) and 80 m (0%). Most decodes (97%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

1,367

Messages attributed

UTC dates decoded

100

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 5 40m · 125 20m · 1,237

First attributed message: 2026-06-07
Last attributed message: 2026-08-26 01:00 UTC

Observed FT8 message patterns

Attributed sample: 1,367 messages
Active dates: 16 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -19 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 353, moderate (-15 to -9 dB) 499, strong (≥ -8 dB) 515.

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 KR4DWD in decoded directed-looking exchanges:

W5DOC · United States ×6 KJ5MRD · United States ×2 SP7NC · Poland ×2 UR5HMF · Ukraine ×2 ES2AJ · Estonia ×2 N0BF · United States ×2 OH1LA · Finland ×2 DB3EH · Fed. Rep. of Germany ×2 IK4LZH · Italy ×2 PA5HR · Netherlands ×2 YO8RSL · Romania ×2 UR4LRG · Ukraine

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 KR4DWD

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: EL88 · 598 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,589 km (approx.)
Last such locator decoded: 2026-08-26 01:00 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	KR4DWD S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-26 00:59	20m	-18 / -	PD0DDA	- / -25	2	Partial capture
08-26 00:58	20m	-16 / -	WB2RRF	- / -5	2	✓ Closing fragment
08-26 00:49	20m	-18 / -	9Y4DG	- / -18	2	Partial capture
08-26 00:43	20m	-15 / +4	N2LQH	-9 / +4	6	✓ Full exchange observed
08-26 00:39	20m	-16 / -	N4OPI	- / +1	2	✓ Closing fragment
08-26 00:31	20m	-13 / -	KS0MIK	- / -16	2	✓ Closing fragment
08-26 00:30	20m	-15 / -	KC9MU	- / +7	2	✓ Closing fragment
08-26 00:25	20m	-12 / -	WA2HIP	- / -15	2	✓ Closing fragment
08-23 01:24	40m	-15 / -	HC1DAZ	- / -	2	✓ Closing fragment
08-23 01:18	40m	- / -	RD7O	+12 / -	2	Partial capture
08-23 01:14	40m	- / +6	PD0IFI	0 / -	2	✓ Closing fragment
08-23 01:09	40m	-13 / -	K4JGC	- / +7	2	Partial capture
08-23 01:06	40m	-18 / -	KJ5MRD	- / -	2	✓ Closing fragment
08-23 01:06	40m	- / -	RD7O	-5 / -	3	Partial capture
08-23 00:59	40m	- / -	UB3KGW	0 / -	3	Partial capture
08-23 00:55	40m	- / -16	IZ7RJT	-14 / -	6	Partial capture
08-23 00:54	40m	-19 / -	N8DRJ	- / 0	2	✓ Closing fragment
08-23 00:53	40m	- / -	RD7O	-3 / -	5	Partial capture
08-23 00:51	40m	- / -	DL6LG	-10 / -	3	Partial capture
08-23 00:49	40m	-21 / +4	PD0IFI	+2 / -15	12	Partial capture
08-23 00:49	40m	- / -	M0PEL	-9 / -	5	Partial capture
08-23 00:47	40m	- / -	RV6F	-15 / -	6	Partial capture
08-23 00:45	40m	-24 / -14	RD3FY	-16 / -24	3	Partial capture
08-23 00:45	40m	-23 / -14	RZ6AKF	+1 / -18	7	✓ Full exchange observed
08-23 00:44	40m	- / -	OH8LXT	-8 / -	2	Partial capture
08-23 00:43	40m	- / -14	DK0ACI	-1 / -	3	Partial capture
08-23 00:41	40m	- / -	PE1NPS	-8 / -	3	Partial capture
08-23 00:41	40m	-21 / -11	UA3GDJ	+6 / -	4	✓ Closing observed
08-23 00:35	40m	- / -15	RU3FA	+2 / -	4	✓ Closing fragment
08-23 00:35	40m	- / -	M0PEL	-10 / -	5	Partial capture
08-23 00:32	40m	- / -	RX3DCZ	0 / -	5	Partial capture
08-23 00:30	40m	-22 / -	KB3MTU	- / -	2	✓ Closing fragment
08-23 00:25	40m	-19 / -10	R2SL	+5 / -9	8	✓ Full exchange observed
08-23 00:24	40m	- / -	RX3DCZ	-1 / -	3	Partial capture
08-23 00:22	40m	-18 / -	TN8GD	- / -12	3	✓ Closing fragment
08-23 00:19	40m	- / -	EA5HM	-16 / -	4	Partial capture
08-23 00:19	40m	- / -	R8FB	+2 / -	2	Partial capture
08-23 00:18	40m	-13 / -12	RD3FY	0 / -24	8	Partial capture
08-23 00:17	40m	- / -	PE1NPS	-1 / -	4	Partial capture
08-23 00:16	40m	-11 / -	HI3RRR	- / +5	5	✓ Closing fragment
08-23 00:14	40m	- / -	PE1NPS	+4 / -	2	Partial capture
08-23 00:13	40m	-10 / -13	R2BQM	+3 / -15	3	Partial capture
08-23 00:10	40m	- / -9	UT3RO	+2 / -	6	✓ Closing fragment
08-23 00:07	40m	- / -12	DM2AB	0 / -	3	✓ Closing fragment
08-11 01:41	40m	- / -14	UT7IA	-10 / -	3	✓ Closing fragment
08-11 01:09	40m	- / -10	9A9TT	-18 / -	3	Partial capture
08-11 01:03	40m	- / -	SQ3LMR	-22 / -	5	Partial capture
08-11 00:56	40m	- / -	F8NHF	-11 / -	6	Partial capture
08-11 00:51	40m	- / -15	RN6MA	-22 / -	2	Partial capture
08-11 00:43	40m	- / -11	R5AV	-17 / -	6	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
004345 -24 1918  T45FCR KR4DWD R+09
004530 -15 2446  KR4DWD DL1LN JO54 (x3)
004645 -24 1919  CQ KR4DWD EL88
004700 -15 2446  KR4DWD DL1LN JO54 (x2)
004800 -19 2499  KR4DWD KB3CCJ EL88
005245 -24 1919  CQ KR4DWD EL88 (x2)
005400 +10 1919  KR4DWD DD6WF JO62 (x2)
005830  -8 1562  KR4DWD DL0KHZ JN48 (x2)
021645 -24 1797  KR4DWD K1SFA R-03

20m

UTC    dB Audio  Message
004900 -17 1915  9Y4DG KR4DWD R-18 (x2)
005100 -18 1913  N8QQS KR4DWD -13
005130 -18 1914  CQ KR4DWD EL88
005330 -18 2067  KF8BED KR4DWD EL88
005500 -17 2067  CQ KR4DWD EL88                        a1 (x5)
005800 -17 2067  WB2RRF KR4DWD -05 (x2)
005900 -20 2066  PD0DDA KR4DWD -25 (x2)
010000 -23 2066  CQ KR4DWD EL88                        a1

40m

UTC    dB Audio  Message
011445  +2  785  KR4DWD PD0IFI R+06 (x2)
011530 -13 2504  CQ KR4DWD EL88                        a1 (x4)
011815 +10 2505  KR4DWD RD7O KN98 (x2)
012400 -13 2503  HC1DAZ KR4DWD EL88 (x2)
012630 -15 2504  CQ KR4DWD EL88 (x2)
012745 -24 1361  KR4DWD RX3ASQ KO95
012745  -2 2503  KR4DWD R8FB LO87
013045 -15 2369  KR4DWD DL5CTE JO31

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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