KR4DEA — 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 KR4DEA, decoded by SO8OO in southeastern Poland. 38 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-01.

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 38 FT8 messages attributed to KR4DEA as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (55%), followed by 20 m (39%) and 80 m (5%). Most decodes (100%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (71%); the estimated median was -18 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

80m · 2 40m · 21 20m · 15

First attributed message: 2026-06-09
Last attributed message: 2026-09-01 03:19 UTC

Observed FT8 message patterns

Attributed sample: 38 messages
Active dates: 9 UTC dates
Estimated median S/N: -18 dB
Estimated 10th-90th percentile: -24 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 27, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 8.

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 KR4DEA in decoded directed-looking exchanges:

PI4DX · Netherlands ×2 A71UN · Qatar ×2 EA8AO · Canary Islands EA8UP · Canary Islands R5DT · European Russia SP8AJK · Poland UA6CE · European Russia XQ1KK · Chile EA5FD · Spain F4MZI · France I0KMJ · Italy LZ2II · Bulgaria

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 KR4DEA

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 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,589 km (approx.)
Last such locator decoded: 2026-09-01 03:19 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	KR4DEA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-04 07:46	40m	- / -	PA4RFS	-15 / -	10	Partial capture
09-01 03:31	80m	- / +6	GM6URC	-6 / -	3	✓ Closing fragment
09-01 03:17	40m	- / -	F5PBG	+8 / -	4	Partial capture
09-01 03:16	40m	- / -	F6FHZ	-13 / -	3	Partial capture
09-01 03:16	40m	- / -15	IZ8EYN	0 / -	5	Partial capture
09-01 03:13	40m	- / -	UA3PY	-12 / -	5	Partial capture
09-01 03:13	40m	- / -17	UT5ECZ	-14 / -	2	✓ Closing fragment
09-01 03:05	40m	- / -	TC30AGU	0 / -	2	Partial capture
09-01 03:04	40m	- / -	F5PBG	0 / -	4	Partial capture
08-29 05:02	40m	- / -14	IK4DCW	+2 / -	5	Partial capture
08-29 04:58	80m	- / -	F5NKX	-17 / -	2	Partial capture
08-29 04:58	80m	- / -18	DK5WL	-6 / -	4	✓ Closing fragment
08-29 04:58	80m	- / -	PA3KUS	-12 / -	8	Partial capture
08-29 04:51	80m	- / -	DK5WL	+1 / -	3	Partial capture
08-29 04:47	80m	- / -16	EA3CUU	-20 / -	3	✓ Closing fragment
08-29 04:41	80m	- / -	DK5WL	-1 / -	3	Partial capture
08-29 04:40	80m	- / -16	OK1XV	+10 / -	9	✓ Closing fragment
08-29 04:39	80m	- / -9	CT3MD	-8 / -	6	✓ Closing fragment
08-29 04:39	80m	- / -20	F1PBZ	+4 / -	4	Partial capture
08-29 04:37	80m	- / -23	IK2LFF	-12 / -	3	✓ Closing fragment
08-29 04:35	80m	- / -	PA3KUS	-15 / -	6	Partial capture
08-29 04:25	40m	- / -15	IT9ACJ	-21 / -	3	Partial capture
08-29 04:24	40m	- / -	SV2BWY	-4 / -	2	Partial capture
08-29 04:17	40m	- / -17	S55DX	-1 / -	3	✓ Closing fragment
08-29 04:17	40m	- / -	UW5ZM	+4 / -	8	Partial capture
08-29 04:16	40m	- / -11	F4HQB	-12 / -	2	Partial capture
08-29 04:10	40m	- / -	UW5ZM	+5 / -	6	Partial capture
08-29 04:06	40m	- / -	DL6RS	-1 / -	2	Partial capture
08-29 04:01	40m	- / -	ON6DL	-12 / -	2	Partial capture
08-29 03:56	40m	- / -15	YO9FFX	-8 / -	3	✓ Closing fragment
08-29 03:41	40m	-22 / -	YO4NF	-23 / -14	3	✓ Closing observed
08-29 01:16	80m	- / -15	F5HNQ	-6 / -	3	✓ Closing fragment
08-29 01:12	80m	- / -18	F4GTB	+1 / -	7	✓ Closing fragment
08-29 01:07	40m	- / -10	S56KO	+13 / -	3	✓ Closing fragment
08-29 01:02	40m	- / -15	PC2J	+4 / -	2	✓ Closing fragment
08-29 00:57	40m	- / -13	US7KC	-18 / -	2	Partial capture
08-29 00:56	40m	- / -	DJ0MAB	+2 / -	4	Partial capture
08-29 00:55	40m	- / -11	UR1CCT	-2 / -	3	✓ Closing fragment
08-29 00:53	40m	- / -10	PA4PA	+5 / -	2	Partial capture
08-29 00:48	40m	- / -	DJ0MAB	+8 / -	2	Partial capture
08-29 00:47	40m	- / -11	PA4PA	0 / -	2	Partial capture
08-29 00:46	40m	- / -16	RZ6AKF	+7 / -	3	Partial capture
08-29 00:44	40m	- / -	DJ0MAB	+4 / -	3	Partial capture
08-29 00:43	40m	- / -	UW5ZM	+11 / -	3	Partial capture
08-29 00:40	40m	- / -	PC2J	-7 / -	2	Partial capture
08-28 23:42	40m	- / -10	EA5FD	-12 / -	5	✓ Closing fragment
08-28 23:41	40m	- / -	OE7HKJ	-4 / -	3	Partial capture
08-28 23:39	40m	- / -17	F4MZI	+2 / -	2	✓ Closing fragment
08-28 23:36	40m	- / -13	LZ2II	-5 / -	2	✓ Closing fragment
08-28 02:33	40m	- / -	TA2EE	-11 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
031830  +7 2844  KR4DEA F5PBG IN78 (x2)
031945  +0  762  KR4DEA IZ8EYN -13
031945 -24 1440  CQ KR4DEA EL88                        a1
074645 -12 1771  KR4DEA PA4RFS JO21 (x11)

80m

UTC    dB Audio  Message
045830 -15  982  KR4DEA PA3KUS JO21
045830 -18 2469  KR4DEA F5NKX IN99
045830  -7 1669  KR4DEA DK5WL JN39
045900 -12  982  KR4DEA PA3KUS JO21
045900  -4 1669  KR4DEA DK5WL R-18
045930  -6  982  KR4DEA PA3KUS JO21
045930  -1 1669  KR4DEA DK5WL 73
050000 -16 2469  KR4DEA F5NKX IN99
050030  -9  982  KR4DEA PA3KUS JO21 (x4)
033145  -7 1317  KR4DEA GM6URC +06 (x3)

20m

UTC    dB Audio  Message
030200 -21 1455  KR4DEA A71UN -10 (x2)
030415 -20 1960  KR4DEA R5DT RR73
040400 -10  745  KR4DEA SP8AJK -12
040400 -17 1136  KR4DEA A71UN -13
040430 -11  745  KR4DEA SP8AJK RR73
040430 -15 1076  KR4DEA A71UN -13 (x5)
223600  -1 2125  KR4DEA UA6CE RR73
021330  -6  857  KR4DEA XQ1KK -19 (x3)

10m

UTC    dB Audio  Message
194815 -12 2465  KR4DEA EA8AO -15 (x2)
182300 -10 1056  KR4DEA PI4DX -17 (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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