DG3SBJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN48

Receiver-side FT8 activity involving DG3SBJ, decoded by SO8OO in southeastern Poland. 135 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-20.

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 135 FT8 messages attributed to DG3SBJ as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (91%), followed by 20 m (7%) and 80 m (2%). Several six-hour UTC windows tied for the largest share (56%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

135

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

80m · 3 40m · 123 20m · 9

First attributed message: 2026-06-07
Last attributed message: 2026-09-20 08:39 UTC

Observed FT8 message patterns

Attributed sample: 135 messages
Active dates: 19 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -19 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 55, moderate (-15 to -9 dB) 72, 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 DG3SBJ in decoded directed-looking exchanges:

PD3LKN · Netherlands RY7G · European Russia 9A3AUH · Croatia DF0AWG · Fed. Rep. of Germany DF0PDF · Fed. Rep. of Germany DL7HS · Fed. Rep. of Germany DL9DAJ · Fed. Rep. of Germany DP3E · Fed. Rep. of Germany HA1RJ · Hungary OK7TB · Czech Republic OZ1BWX · Denmark PD5PMA · Netherlands

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 DG3SBJ

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 · 99 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 941 km (approx.)
Last such locator decoded: 2026-09-20 08:38 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	DG3SBJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 08:38	40m	-16 / -4	DF0PDF	0 / -	6	✓ Full exchange observed
09-09 08:48	40m	- / +6	SN100PKP	+2 / -	2	Partial capture
09-08 14:17	40m	-16 / -	HF100PKP	- / -10	3	Partial capture
09-08 14:14	40m	-16 / -	SO100PKP	- / -6	4	Partial capture
09-08 14:11	40m	-17 / -	UA3UBV/1	- / -	4	Partial capture
09-08 08:59	40m	-18 / -	EM90ZMV	- / -	5	Partial capture
09-07 14:47	40m	-15 / +3	HF100PKP	-11 / -3	6	Partial capture
09-07 08:55	40m	-18 / -	OZ1BWX	- / -15	2	✓ Closing fragment
09-07 08:51	40m	-20 / -	DL7HS	- / -	2	✓ Closing fragment
09-06 08:45	40m	-14 / +9	DL8NW	-1 / +4	3	Partial capture
09-05 08:24	40m	-17 / -	DK1FIN	- / -	3	Partial capture
09-04 15:21	40m	-10 / +2	HA1RJ	+14 / +7	9	✓ Full exchange observed
09-04 15:21	40m	-13 / -	PD5DSL	- / -	2	Partial capture
09-04 15:18	40m	-12 / -	PD5PMA	- / -14	4	✓ Closing fragment
09-04 15:17	40m	-15 / -	PD5DSL	- / -	3	Partial capture
09-04 15:07	40m	-13 / -	<...>	- / -	5	Partial capture
09-04 14:46	40m	-14 / -	<...>	- / -3	4	Partial capture
09-04 08:01	40m	- / -14	9A3AUH	-13 / -	3	✓ Closing fragment
09-03 16:04	80m	-12 / -17	DL0HAM	+4 / -13	4	✓ Full exchange observed
09-03 15:28	40m	-14 / -	DL9DAJ	-19 / +1	3	✓ Closing observed
09-03 14:42	40m	-15 / -	F1UNR	- / -9	4	Partial capture
09-03 14:37	40m	-14 / -	SO100PKP	- / -7	3	Partial capture
09-03 14:28	40m	-14 / -	PD3JVR	- / -	2	Partial capture
09-03 08:17	40m	-12 / -	DL1SVI	- / -	2	Partial capture
09-02 07:44	40m	-14 / -2	DF0AWG	+2 / -	6	✓ Full exchange observed
09-02 07:39	40m	-13 / -	II7MGBT	- / +2	2	Partial capture
09-01 08:41	40m	-21 / -	DL7GAL	- / -16	3	Partial capture
07-25 08:17	40m	- / +2	OK7TB	-12 / -	5	✓ Closing fragment
07-11 08:15	20m	-17 / -15	PD3LKN	-19 / -	2	✓ Closing observed
07-10 07:38	20m	-16 / -	5N0YEN	- / -	2	Partial capture
07-10 07:32	20m	-15 / -	RY7G	- / -	2	✓ Closing fragment
07-02 08:41	40m	- / -7	SQ1MNG	-17 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
141715 -18 2062  <HF100PKP> DG3SBJ JN48 (x2)
141800  -7 2239  DG3SBJ SQ5WBW/P -19
141815 -14 2062  HF100PKP DG3SBJ R-10
084815 -17 2059  SP100PKP DG3SBJ JN48
084830  +3  928  DG3SBJ SN100PKP +06 (x2)
081815 -14 2006  CQ DG3SBJ JN48                        a1
081915  -9 2005  OM8AMF DG3SBJ +01
083800 -17 2006  DF0PDF DG3SBJ JN48 (x2)
083845  -1 2428  DG3SBJ DF0PDF -04
083900 -14 2006  DF0PDF DG3SBJ R+17
083915  +0 2428  DG3SBJ DF0PDF RR73
083930 -19 2006  DF0PDF DG3SBJ 73

80m

UTC    dB Audio  Message
155400 -16  967  CQ DG3SBJ JN48
160445 -14  967  DL0HAM DG3SBJ JN48
160500  +7 1589  DG3SBJ DL0HAM -17
160515 -10  967  DL0HAM DG3SBJ R-13
160530  +0 1589  DG3SBJ DL0HAM RR73

20m

UTC    dB Audio  Message
080545 -15 1132  CQ DG3SBJ JN48 (x2)
073215 -17 1134  RY7G DG3SBJ RR73 (x2)
073330  -8  335  DG3SBJ TM40TFR -07
073830 -14 1135  5N0YEN DG3SBJ JN48 (x3)
081345 -14 1134  PD0SOT DG3SBJ JN48
081530 -19 1135  DG3SBJ PD3LKN R-15
081545 -17 1134  PD3LKN DG3SBJ RR73
085530 -10 1581  DG3SBJ KD4AP -13

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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