DK0BO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO31

Receiver-side FT8 activity involving DK0BO, decoded by SO8OO in southeastern Poland. 549 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-09-03.

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 549 FT8 messages attributed to DK0BO as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (55%), followed by 40 m (20%) and 10 m (15%). Most decodes (60%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was -1 dB.

Overview

549

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

80m · 52 40m · 112 20m · 301 10m · 84

First attributed message: 2026-06-14
Last attributed message: 2026-09-03 20:49 UTC

Observed FT8 message patterns

Attributed sample: 549 messages
Active dates: 22 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -10 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 87, strong (≥ -8 dB) 455.

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 DK0BO in decoded directed-looking exchanges:

9A2WA · Croatia ×2 CR5VP · Portugal DA6PP · Fed. Rep. of Germany DN9CHV · Fed. Rep. of Germany EA1IIF · Spain EI2HF · Ireland EW4VX · Belarus F5NNN · France HA3GX · Hungary SM7WVZ · Sweden 4X1UF · Israel 9M2HUS · West Malaysia

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 DK0BO

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: JO31 · 404 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-09-03 20:43 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	DK0BO S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-03 20:48	40m	+11 / -	CN8NS	- / +9	2	✓ Closing fragment
09-03 20:41	40m	+4 / -	RI1FJL	- / -	4	Partial capture
09-03 20:29	40m	+12 / -	RI1FJL	- / -	11	Partial capture
09-03 20:25	40m	+9 / -	RI1FJL	- / -	4	Partial capture
09-03 20:23	40m	+7 / -	DK8HC	- / -	3	Partial capture
09-03 20:18	40m	+11 / +7	G1SID	-6 / -2	2	Partial capture
09-03 20:15	40m	+8 / -	DF8RU	- / -	4	Partial capture
09-03 20:11	40m	+9 / 0	LA1KUA	+14 / -	6	✓ Full exchange observed
09-03 20:09	40m	+7 / -	F5RAV	- / -	3	Partial capture
09-03 20:00	40m	+8 / -	TT1GD	- / -	7	Partial capture
09-03 19:56	40m	+8 / -	OO0O	- / -	6	Partial capture
09-03 19:38	40m	+6 / -	3Z100PKP	- / +1	2	Partial capture
09-03 19:26	40m	+10 / -	RI1FJL	- / -7	42	Partial capture
09-03 19:23	40m	+8 / 0	F1IQH	-11 / +7	4	✓ Full exchange observed
09-03 19:20	40m	+4 / -	RI1FJL	- / -	2	Partial capture
09-03 19:11	40m	-3 / -	RI1FJL	- / -	6	Partial capture
09-01 17:48	80m	-12 / +1	DA6IT	-20 / -14	6	Partial capture
08-26 21:19	20m	-9 / +8	RI1FJL	-11 / -13	10	✓ Full exchange observed
08-24 19:13	20m	- / -	E70SZ	+7 / -	5	Partial capture
08-24 19:13	20m	- / -	RZ4FWA	+2 / -	3	Partial capture
08-22 18:28	20m	+3 / -	5P1KZX	- / -	4	Partial capture
08-22 18:24	20m	-3 / -	5P1KZX	- / -	2	Partial capture
08-22 18:16	20m	+2 / -	5P1KZX	- / -	4	Partial capture
08-22 18:02	20m	0 / -	5P1KZX	- / -	2	Partial capture
08-21 21:36	20m	-4 / -	XU7O	- / -	4	Partial capture
08-12 21:57	10m	-13 / -	F1RIQ	- / -	4	Partial capture
08-12 21:46	10m	-9 / -	EB2EMZ	- / 0	14	Partial capture
08-12 21:39	10m	-9 / -10	DA6PP	-19 / +4	7	✓ Full exchange observed
08-12 21:35	10m	-11 / -	SM7WVZ	- / -7	2	✓ Closing fragment
08-12 21:29	10m	-9 / -	EI2HF	- / -	7	✓ Closing fragment
08-12 21:22	10m	-5 / -	EW4VX	- / -	3	✓ Closing fragment
08-12 21:17	10m	-7 / -	CR5VP	-17 / -2	5	✓ Full exchange observed
08-12 21:11	10m	-4 / -	EA1IIF	- / -	12	✓ Closing fragment
08-12 21:05	10m	-8 / -16	DN9CHV	-4 / +2	4	✓ Full exchange observed
08-12 21:03	10m	-3 / -	F5NNN	- / -	3	✓ Closing fragment
08-12 20:56	10m	0 / -	9A2WA	- / +9	2	✓ Closing fragment
08-12 20:54	10m	0 / -	HA3GX	- / -	4	✓ Closing fragment
08-09 16:27	20m	-6 / -	YB7SKM	- / -	7	Partial capture
08-09 12:52	20m	-8 / -	A61QQ	- / +5	2	Partial capture
08-06 18:42	20m	-10 / -	LZ2VQ	- / -	4	✓ Closing fragment
08-06 17:12	20m	-6 / -	JH0BBA	- / -7	2	Partial capture
08-06 17:02	20m	-9 / -	YC1SNI	- / -	7	Partial capture
08-06 16:53	20m	-4 / -8	4X1UF	-14 / -5	4	✓ Full exchange observed
08-05 15:04	20m	- / -2	UT4QM	-4 / -	2	Partial capture
07-30 06:39	20m	- / -20	US1VS	-2 / -	2	✓ Closing fragment
07-29 23:58	20m	- / -9	KQ4RLN	-7 / -	3	✓ Closing fragment
07-27 14:52	20m	-5 / -	DS5USH	- / -11	10	Partial capture
07-27 14:46	20m	-4 / -	DS5USH	- / -	8	Partial capture
07-27 14:41	20m	-2 / -	VU2KPH	- / -16	8	✓ Closing fragment
07-27 14:14	20m	-5 / -	RL2F	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
203045 +13  317  RI1FJL DK0BO JO31 (x13)
204845 +12  362  CN8NS DK0BO R+09 (x2)

80m

UTC    dB Audio  Message
232430 +10  410  GM1TGY DK0BO R+06
232445  -1 1193  DK0BO GM1TGY RR73
232530  +0  410  DL1UDO DK0BO JO31
232545  +1 1401  DK0BO DL1UDO -05
232600  +6  410  DL1UDO DK0BO R+11
232615  -2 1401  DK0BO DL1UDO RR73
232630  +2  410  DL1UDO DK0BO 73
174845 -24  809  DK0BO DA6IT R+01
174900 -15  488  DA6IT DK0BO -14
174915 -17  809  DK0BO DA6IT R+01
174930  -9  488  DA6IT DK0BO -14
174945 -23  809  DK0BO DA6IT R+00 (x2)
175030  -8  488  CQ DK0BO JO31 (x2)

20m

UTC    dB Audio  Message
191445  +9 2070  DK0BO RZ4FWA LO23
191445  +5  512  DK0BO E70SZ JN84 (x3)
211915 -10  362  RI1FJL DK0BO JO31
211930 -12  526  DK0BO RI1FJL +08 (x2)
212015 -11  361  RI1FJL DK0BO JO31 (x3)
212230 -10  465  DK0BO RI1FJL +04
212245  -6  361  RI1FJL DK0BO JO31 (x3)
105730 -11  912  UT2PC DK0BO JO31

10m

UTC    dB Audio  Message
215145  -5  918  EB2EMZ DK0BO +00 (x4)
215345 -10  919  CQ DK0BO JO31 (x7)
215715 -13  919  F1RIQ DK0BO JO31 (x4)

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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