DA1JK — 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: Fed. Rep. of Germany Most frequent locator attributed to this token: JN48

Receiver-side FT8 activity involving DA1JK, decoded by SO8OO in southeastern Poland. 211 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 32 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-11-05.

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 211 FT8 messages attributed to DA1JK as the transmitting token by decoded message structure across 32 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (48%), followed by 40 m (47%) and 10 m (4%). Most decodes (83%) fell within the six-hour window 06:00-12:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.1 dB.

Overview

211

Messages attributed

UTC dates decoded

Active 15-min windows

-9.1 dB

Estimated median S/N

Bands

80m · 1 40m · 100 20m · 102 10m · 8

First attributed message: 2026-06-12
Last attributed message: 2026-11-05 07:45 UTC

Observed FT8 message patterns

Attributed sample: 211 messages
Active dates: 32 UTC dates
Estimated median S/N: -9.1 dB
Estimated 10th-90th percentile: -18 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 36, moderate (-15 to -9 dB) 74, strong (≥ -8 dB) 101.

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 DA1JK in decoded directed-looking exchanges:

DG2SAT · Fed. Rep. of Germany AI6US · United States ES3BH · Estonia F5HNQ · France G7WAQ · England IU5TPM · Italy LA1PHA · Norway LB4PI · Norway NF3R · United States UA4FEN · European Russia DD1OO · Fed. Rep. of Germany DF1KG · Fed. Rep. of Germany

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 DA1JK

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: JN48 · 132 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 941 km (approx.)
Last such locator decoded: 2026-11-05 07:45 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	DA1JK S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 07:44	40m	-5 / -	ON3MOH/P	- / -	3	Partial capture
11-04 10:52	40m	- / -9	S53AK	-9 / -	4	✓ Closing fragment
11-04 10:51	40m	-16 / -	<...>	- / -6	3	✓ Closing fragment
10-29 07:23	40m	-2 / -	EA1CUB	- / -16	3	✓ Closing fragment
10-29 07:16	40m	- / -10	DD1OO	0 / -	7	✓ Closing fragment
10-24 06:59	40m	-2 / -	F4CQS	- / -	2	Partial capture
10-21 06:39	80m	- / -	DL1UDO	-8 / -	4	Partial capture
10-21 06:35	80m	- / -19	DL1FLW	-4 / -	3	✓ Closing fragment
10-21 06:35	80m	- / -23	DL2VN	-2 / -	6	✓ Closing fragment
10-09 06:23	40m	- / -11	DM8ITZ	+5 / -	2	✓ Closing fragment
10-09 06:17	40m	- / -6	OH3CYT	-7 / -	2	✓ Closing fragment
10-08 11:24	40m	- / -14	SQ2RAD	-20 / -	2	Partial capture
10-08 06:33	40m	-8 / -	OA4ENG	- / -	2	Partial capture
10-08 06:30	40m	-1 / -	SQ5ANT	- / -19	5	✓ Closing fragment
10-08 06:24	40m	-8 / -	OA4ENG	- / -	2	Partial capture
10-08 06:23	40m	-8 / -	IZ0MYH	- / -21	2	Partial capture
10-08 06:21	40m	+2 / -3	SQ2RAD	-14 / -30	3	Partial capture
10-08 06:18	40m	+1 / -	OA4ENG	- / -	3	Partial capture
10-07 11:53	40m	- / -8	SQ8AZT	-24 / -	2	✓ Closing fragment
10-06 09:12	40m	- / +1	S55OO	0 / -	5	Partial capture
10-06 09:11	40m	- / -1	IN3IBW	-7 / -	2	✓ Closing fragment
10-03 06:04	60m	- / -6	DK7UY	+4 / -	6	✓ Closing fragment
10-03 06:04	60m	- / -12	F5RRS	+5 / -	6	✓ Closing fragment
10-03 06:04	60m	- / -	PI4TX	-12 / -	3	Partial capture
10-03 05:37	80m	- / -12	OK1AY	+2 / -	4	✓ Closing fragment
09-29 17:47	60m	- / -	DL1IP	-7 / -	5	Partial capture
09-29 08:07	40m	-10 / -	EB3JT	- / -16	2	Partial capture
09-29 08:03	40m	-6 / -	M6INJ	- / -13	2	✓ Closing fragment
09-29 08:02	40m	- / -7	DM3XD	-14 / -	2	Partial capture
09-19 06:30	60m	- / -	PE1NPS	-17 / -	3	Partial capture
09-17 06:35	40m	-7 / -	IK4TVP	-10 / -30	4	✓ Full exchange observed
09-17 06:35	40m	-10 / -	US2YW	+11 / +3	3	Partial capture
09-17 06:32	40m	-9 / -	F6ASP	- / -12	5	✓ Closing fragment
09-16 14:13	40m	-16 / -	ON1DGN	- / -21	2	✓ Closing fragment
09-16 14:12	40m	- / -	S51PV	-12 / -	7	Partial capture
09-16 14:10	40m	-14 / -5	HA7TM	+12 / 0	5	✓ Full exchange observed
09-16 06:16	60m	- / -10	9A7BB	+3 / -	2	✓ Closing fragment
09-09 14:07	40m	- / 0	DL7UKM	+2 / -	4	✓ Closing fragment
09-09 14:00	40m	-12 / -	OE8PIT	-6 / -3	2	✓ Closing observed
09-07 06:20	60m	- / -17	DD6ZV	+2 / -	4	✓ Closing fragment
09-01 06:13	60m	- / -13	F1TXI	-19 / -	5	✓ Closing fragment
09-01 06:04	60m	- / -13	ON7KEI	-19 / -	3	✓ Closing fragment
08-31 07:10	40m	-8 / -	EA1AEC	- / -5	2	✓ Closing fragment
08-31 07:05	40m	-7 / -	EA8UP	- / -	4	Partial capture
08-31 06:59	40m	-7 / -16	OT4N	-16 / -10	7	✓ Full exchange observed
08-31 06:57	40m	-8 / -	EB5IVB	- / -	2	Partial capture
08-30 14:45	20m	-10 / -	RI1FJL	- / -6	5	Partial capture
08-30 14:36	20m	-11 / -	BH6LIG	- / -	2	Partial capture
08-30 14:33	20m	-9 / -	ES3BH	- / -9	3	✓ Closing fragment
08-27 11:34	20m	+11 / -	RI1FJL	- / -	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
072330  +1 2672  EA1CUB DA1JK JN48 (x3)
110915  -5  346  DA1JK PF40EUDXF +05
111100  -9  392  PI40EUDXF DA1JK JN48
105145 -18  222  <...> DA1JK JN48
105200  -8 2084  DA1JK S53AK JN76 (x2)
105245 -18  222  <...> DA1JK -06
105300 -11 2084  DA1JK S53AK R-09
105315 -13  222  <...> DA1JK RR73
105330 -11 2084  DA1JK S53AK 73
074430  -7 2669  ON3MOH/P DA1JK JN48 (x3)

10m

UTC    dB Audio  Message
085915  -2 1689  DA1JK DG2SAT JN48 (x3)
145830 -21 1262  LU2EI DA1JK JN48

80m

UTC    dB Audio  Message
055030 -19  688  DA1JK DO5AX JO52
063515  -4  933  DA1JK DL2VN JO51
063515  -4 1584  DA1JK DL1FLW JO61
063545  -2  933  DA1JK DL2VN JO51
063545  -5 1584  DA1JK DL1FLW R-19
063615  -1  933  DA1JK DL2VN JO51
063615  -3 1584  DA1JK DL1FLW 73
063645  -4  933  DA1JK DL2VN R-23 (x3)
063915 -10 1450  DA1JK DL1UDO JO31 (x4)
075115 -17 1304  DA1JK DD7EE RR73

60m

UTC    dB Audio  Message
060400  +7  967  DA1JK F5RRS JN36
060400  +2  266  DA1JK DK7UY JO44
060430  +5  967  DA1JK F5RRS JN36
060430  +0  266  DA1JK DK7UY JO44
060500 -13 2280  DA1JK PI4TX JO22
060500  +5  967  DA1JK F5RRS JN36
060500  +1  266  DA1JK DK7UY JO44
060530 -10 2281  DA1JK PI4TX JO22
060530  +5  967  DA1JK F5RRS JN36
060530  +3  266  DA1JK DK7UY JO44
060630  +3  967  DA1JK F5RRS R-12 (x2)
060730  +7  319  DA1JK DK7UY R-06 (x2)
062615 -22 1781  DA1JK ON7DE 73

20m

UTC    dB Audio  Message
113615  +6  326  RI1FJL DA1JK JN48 (x3)
082800 -15  520  CQ DX DA1JK JN48
083045  -7  520  DA1JK DH2YBG JO43
143315  -8  708  ES3BH DA1JK JN48 (x3)
143615 -11  709  BH6LIG DA1JK JN48 (x2)
144545 -18  219  RI1FJL DA1JK R-06 (x5)

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.

CW

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

Explore CW reception at SO8OO

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