DL7SB — 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: JO54

Receiver-side FT8 activity involving DL7SB, decoded by SO8OO in southeastern Poland. 32 FT8 messages attributed to this token as transmitter, on 80m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-02 and 2026-10-30.

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 32 FT8 messages attributed to DL7SB as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was -1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

80m · 32

First attributed message: 2026-07-02
Last attributed message: 2026-10-30 20:16 UTC

Observed FT8 message patterns

Attributed sample: 32 messages
Active dates: 5 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -9 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 27.

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 DL7SB in decoded directed-looking exchanges:

IU3MAG · Italy ×2 DK1XAM · Fed. Rep. of Germany DK7ZT · Fed. Rep. of Germany LY8O · Lithuania OM5JG · Slovak Republic DK6WS · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany DM5JBN · Fed. Rep. of Germany DO4EB · Fed. Rep. of Germany DO9SAM · Fed. Rep. of Germany G4DZE · England OK1UOZ · Czech Republic

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 DL7SB

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: JO54 · 12 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 892 km (approx.)
Last such locator decoded: 2026-10-30 20:15 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	DL7SB S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-30 20:15	80m	-1 / -5	OK1UOZ	+9 / +2	5	✓ Full exchange observed
10-30 20:13	80m	+6 / -	F4DUZ	- / -	2	Partial capture
10-30 16:53	80m	+4 / -1	DO9SAM	+17 / -	4	✓ Closing observed
10-30 16:51	80m	+6 / -	PG9S	- / -13	2	✓ Closing fragment
10-30 16:49	80m	0 / -1	G4DZE	-10 / +2	4	✓ Full exchange observed
10-30 16:36	80m	+4 / -11	DO4EB	+6 / -	3	✓ Closing observed
09-27 09:15	40m	- / -	DK7UY	-13 / -	2	Partial capture
09-27 09:15	40m	- / -	DL6UM	-10 / -	6	Partial capture
09-04 18:50	80m	- / -	UA4FKT	+9 / -	3	Partial capture
09-04 18:48	80m	-6 / -1	DK0KG	-6 / -4	4	Partial capture
09-04 18:47	80m	-1 / -	DB100FT	-1 / +1	3	Partial capture
08-17 19:35	80m	-4 / -16	DM5JBN	+4 / -	3	✓ Closing observed
08-17 19:31	80m	-7 / 0	RA2FU	-19 / -11	6	✓ Full exchange observed
08-17 19:28	80m	0 / -	IU3MAG	+6 / -	2	✓ Closing observed
08-16 18:56	60m	- / -1	DK7ZT	-18 / -	3	✓ Closing fragment
08-16 18:55	60m	- / +1	DK1XAM	-12 / -	3	✓ Closing fragment
08-16 18:53	60m	- / -5	LY8O	-4 / -	4	✓ Closing fragment
08-16 18:52	60m	- / -11	OM5JG	+2 / -	2	✓ Closing fragment
08-16 10:15	20m	- / -6	IU3MAG	-10 / -	2	✓ Closing fragment
08-15 18:40	80m	+1 / -	LA1SDX	- / -	2	Partial capture
08-15 18:35	80m	-8 / -2	DL9KM	-10 / -4	6	✓ Full exchange observed
08-15 18:35	80m	- / -12	R3DFS	-6 / -	2	Partial capture
08-15 18:34	80m	-9 / -	DL0YLM/LH	- / -4	2	Partial capture
08-15 18:32	80m	+4 / -20	RU3T	+1 / -2	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
165045  +1  385  G4DZE DL7SB 73
165145  +1  385  PG9S DL7SB -13 (x2)
165300 +16  386  DL7SB DO9SAM JO61 (x2)
165345  +4  385  DO9SAM DL7SB RR73
165400 +17  386  DL7SB DO9SAM 73
201300  +5 1391  F4DUZ DL7SB JO54 (x2)
201545  -3 2726  OK1UOZ DL7SB JO54
201600 +11 2726  DL7SB OK1UOZ -05
201615  -1 2726  OK1UOZ DL7SB R+02
201630  +7 2726  DL7SB OK1UOZ RR73
201645  +2 2726  OK1UOZ DL7SB 73
212530  -5 2200  DL7SB DK6WS RR73

40m

UTC    dB Audio  Message
091515 -10  579  DL7SB DL6UM JO60
091515 -14 2538  DL7SB DK7UY JO44
091545 -12  579  DL7SB DL6UM JO60
091615 -12 2538  DL7SB DK7UY JO44
091645 -13  579  DL7SB DL6UM JO60 (x4)

60m

UTC    dB Audio  Message
185245  +2 1200  DL7SB OM5JG -11 (x2)
185345  +2 1833  DL7SB LY8O KO25 (x4)
185515 -11  725  DL7SB DK1XAM JO42 (x3)
185645 -18 1900  DL7SB DK7ZT -01 (x3)

20m

UTC    dB Audio  Message
101515  -9 2459  DL7SB IU3MAG -06 (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.

CW

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

Explore CW reception at SO8OO

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