DH3SBB — 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 DH3SBB, decoded by SO8OO in southeastern Poland. 309 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-11.

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 309 FT8 messages attributed to DH3SBB 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 (50%), followed by 40 m (30%) and 80 m (15%). Most decodes (83%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

309

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 46 60m · 9 40m · 94 20m · 156 10m · 4

First attributed message: 2026-06-06
Last attributed message: 2026-10-11 00:34 UTC

Observed FT8 message patterns

Attributed sample: 309 messages
Active dates: 22 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -19 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 107, moderate (-15 to -9 dB) 106, strong (≥ -8 dB) 96.

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 DH3SBB in decoded directed-looking exchanges:

DL7PIA · Fed. Rep. of Germany ×7 RI1FJL · Franz Josef Land ×2 RX9WM · Asiatic Russia W7PIA · United States DL2VN · Fed. Rep. of Germany G0AZH · England DO3LZ · Fed. Rep. of Germany DO8JB · Fed. Rep. of Germany EI4JFB · Ireland F1IQH · France F4BND · France F4GUC · France

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 DH3SBB

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 · 236 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 941 km (approx.)
Last such locator decoded: 2026-10-11 00:20 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	DH3SBB S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 22:54	40m	- / +4	ON1JP	-16 / -	4	Partial capture
10-11 00:19	80m	-18 / -	9H6C	- / -	3	Partial capture
10-11 00:16	80m	- / -15	F1PBZ	+10 / -	2	Partial capture
10-11 00:10	80m	-17 / -	F4GUC	-7 / -16	6	✓ Closing observed
10-11 00:03	80m	-22 / -22	DO3BOX	-16 / -13	2	Partial capture
10-11 00:01	80m	-19 / -	EI4JFB	- / -13	2	✓ Closing fragment
10-10 23:44	80m	- / -	DL7PIA	0 / -	2	✓ Closing fragment
10-10 10:13	40m	- / -	DL7PIA	-14 / -	2	✓ Closing fragment
10-10 10:00	40m	-19 / -	DL7PIA	-16 / -	16	Partial capture
10-09 12:01	40m	-16 / -	DL7PIA	-4 / -	4	✓ Full exchange observed
10-08 21:43	80m	-16 / -	DL7PIA	+4 / +4	6	✓ Full exchange observed
10-08 21:41	80m	-21 / -17	F1IQH	-5 / -	3	✓ Closing observed
10-08 21:38	80m	- / -12	DO3LZ	+1 / -	3	✓ Closing fragment
10-08 21:36	80m	- / -18	DO8JB	-3 / -	3	✓ Closing fragment
10-08 18:52	80m	- / -	DL7PIA	+1 / -	2	✓ Closing fragment
10-07 08:15	40m	- / -	DF1KG	-17 / -	2	Partial capture
10-07 08:09	40m	-14 / -	DL7PIA	-12 / -	12	✓ Full exchange observed
10-06 21:52	80m	- / -	DL7PIA	-4 / -	2	✓ Closing fragment
10-04 19:58	60m	-3 / -	SV1FJR	- / -	4	Partial capture
10-04 19:41	60m	-12 / 0	OS4K	-23 / -17	2	Partial capture
10-04 19:40	60m	-15 / -17	G0AZH	-2 / -12	6	✓ Full exchange observed
10-04 19:39	60m	- / -6	DL2VN	-9 / -	3	✓ Closing fragment
09-04 20:49	40m	-5 / -	RI1FJL	- / +2	6	✓ Closing fragment
09-02 23:12	80m	0 / -11	SM7TZK	+6 / -	7	Partial capture
09-02 23:07	80m	+4 / -	<...>	- / -6	2	Partial capture
09-02 23:02	80m	-15 / -	F5RMK	- / -15	7	✓ Closing fragment
08-30 23:09	40m	- / -4	RX9WM	-11 / -	2	✓ Closing fragment
08-30 22:54	40m	- / -15	TC30AUG	+2 / -	4	Partial capture
08-30 21:57	80m	- / -	DO5RRS	-5 / -	8	Partial capture
08-30 21:50	80m	-16 / -20	UA4FKT	+13 / +1	6	✓ Full exchange observed
08-30 21:47	80m	-17 / -10	F4BND	-16 / -11	9	✓ Full exchange observed
08-30 14:27	20m	0 / -	RI1FJL	-6 / -	4	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
100415 -19 1427  DL7PIA DH3SBB JN48 (x5)
101000 -14 1307  DH3SBB DL7PIA +29 (x5)
224045 -20 1098  DH3SBB W7PIA RR73
225415 -15  778  DH3SBB ON1JP +04 (x4)

80m

UTC    dB Audio  Message
001515 -15 1258  CQ DH3SBB JN48 (x2)
001600  +9 2554  DH3SBB F1PBZ -15
001615 -15 1259  CQ DH3SBB JN48
001630 +12 2554  DH3SBB F1PBZ -15
001645 -13 1259  CQ DH3SBB JN48 (x5)
001915 -17 1501  9H6C DH3SBB JN48 (x3)
002930  -9 1380  DH3SBB 9H6C -07
003445 -12 1501  9H6C DH3SBB R-18

60m

UTC    dB Audio  Message
194015  -7 1220  DH3SBB DL2VN R-06
194045  -1  568  DH3SBB G0AZH IO83
194045  -5 1220  DH3SBB DL2VN 73
194115 -23 1778  DH3SBB OS4K +00
194115  -3  567  DH3SBB G0AZH IO83
194130 -16 1290  G0AZH DH3SBB -12
194145  -1  568  DH3SBB G0AZH R-17
194200 -14 1290  G0AZH DH3SBB RR73
194215  -1  567  DH3SBB G0AZH 73
194230 -12 1290  OS4K DH3SBB R-17
195800  -4 1112  SV1FJR DH3SBB JN48 (x4)
200000  -4 1112  F1IQH DH3SBB JN48

20m

UTC    dB Audio  Message
142745  +3 1014  RI1FJL DH3SBB JN48 (x2)
142830  -6  420  DH3SBB RI1FJL RR73
142845  -3 1014  RI1FJL DH3SBB 73

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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