DL1SL — 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 DL1SL, decoded by SO8OO in southeastern Poland. 137 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-13.

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 137 FT8 messages attributed to DL1SL as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (33%), followed by 60 m (31%) and 10 m (20%). Several six-hour UTC windows tied for the largest share (55%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

137

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 15 60m · 43 40m · 6 20m · 45 10m · 28

First attributed message: 2026-06-07
Last attributed message: 2026-09-13 18:07 UTC

Observed FT8 message patterns

Attributed sample: 137 messages
Active dates: 11 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -18 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 25, moderate (-15 to -9 dB) 49, strong (≥ -8 dB) 63.

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 DL1SL in decoded directed-looking exchanges:

9A2WA · Croatia G4DBW · England LA1HW · Norway M9PXZ · England OZ5WT · Denmark PY2TOW · Brazil S56EPX · Slovenia DM2BM · Fed. Rep. of Germany F4HTA · France F5SFT · France JA9ELE · Japan PD9T · 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 DL1SL

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 · 62 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 941 km (approx.)
Last such locator decoded: 2026-09-13 18:06 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	DL1SL S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 18:06	60m	-4 / -6	LB1UK	-6 / -4	5	✓ Full exchange observed
09-13 18:05	60m	+1 / -	F6FHZ	- / -7	2	✓ Closing fragment
09-13 18:04	60m	+3 / 0	ON6AA	+2 / -5	5	✓ Full exchange observed
09-13 18:03	60m	-3 / -	OE5OEL	- / -	2	Partial capture
09-13 18:00	60m	-2 / -5	OZ9FF	-6 / -1	6	✓ Full exchange observed
09-13 17:58	60m	-2 / -12	SM2OTU	-12 / -10	5	✓ Full exchange observed
08-30 16:04	20m	-18 / -	DM2BM	- / -7	2	✓ Closing fragment
08-30 06:51	40m	-10 / -	AA3B	- / -	2	Partial capture
08-29 18:11	20m	-15 / -	AA3B	- / -	6	Partial capture
08-29 18:07	20m	-4 / -	JA9ELE	- / -15	6	✓ Closing fragment
08-29 18:05	20m	-12 / -	RI1FJL	- / -	2	✓ Closing fragment
08-29 17:20	60m	-8 / -4	SV2JAO	0 / -8	5	✓ Full exchange observed
08-25 09:43	20m	-16 / -	EA1/PE5X	- / -16	2	Partial capture
08-25 09:42	20m	-16 / -	MI0AIH	-2 / +2	2	Partial capture
08-25 09:15	40m	-18 / -	DK1XAM	- / -	2	✓ Closing fragment
08-25 08:45	20m	-13 / -	<...>	- / -	3	Partial capture
08-24 09:19	20m	-10 / -	PD9T	- / -10	3	✓ Closing fragment
08-24 09:13	20m	-6 / -	F5SFT	- / -11	4	✓ Closing fragment
08-24 09:11	20m	-6 / 0	F4HTA	-14 / -3	3	✓ Full exchange observed
08-23 03:30	60m	-7 / -6	IK4CBO	-13 / -10	6	✓ Full exchange observed
08-23 03:29	60m	-8 / -	OO0O	- / -10	3	✓ Closing fragment
08-23 03:28	60m	-6 / -	G1TZC	- / -8	3	✓ Closing fragment
08-23 03:26	60m	-6 / -	VE3FF	- / -11	4	✓ Closing fragment
08-23 03:23	60m	-11 / +3	YO3CWC	+1 / -2	6	✓ Full exchange observed
08-23 03:20	60m	-5 / -3	DD6ZV	-2 / -16	8	✓ Full exchange observed
08-23 03:20	60m	-3 / -13	G0AZH	+2 / -10	5	✓ Full exchange observed
08-23 03:17	80m	0 / -	DL1UDO	+2 / +1	4	✓ Closing observed
08-23 03:15	80m	-2 / -2	S52UF	+3 / 0	5	✓ Full exchange observed
08-23 03:14	80m	-2 / -11	DO9BAU	+13 / -9	6	✓ Full exchange observed
08-23 03:12	80m	-1 / -	TA3NE	+2 / -10	4	✓ Closing observed
08-23 03:04	40m	-13 / -	KV1J	- / -	2	Partial capture
08-23 03:00	80m	-4 / -	TF3VS	- / -	4	Partial capture
08-14 09:15	20m	-22 / -	OZ4HAM	- / -16	2	Partial capture
08-12 20:00	10m	-14 / +5	OZ5WT	-13 / 0	8	✓ Full exchange observed
08-12 19:58	10m	-15 / -	OZ2SPACE	- / -12	3	Partial capture
08-12 19:57	10m	-12 / -	9A2WA	- / -13	2	✓ Closing fragment
08-12 19:56	10m	-10 / -	G4DBW	- / -8	3	✓ Closing fragment
08-12 19:54	10m	-9 / -	LA1HW	-24 / -9	4	✓ Closing observed
08-12 19:51	10m	-12 / -3	M9PXZ	-11 / -2	6	✓ Full exchange observed
08-12 19:48	10m	-14 / -	9A60CBM	- / -22	3	Partial capture
06-29 18:15	10m	-18 / -	PY2TOW	- / -21	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
180230  -3 2433  OZ9FF DL1SL 73
180345  -2 2433  OE5OEL DL1SL JN48 (x2)
180430  -1  602  DL1SL ON6AA JO11
180445  +2 2433  ON6AA DL1SL -05
180500  +2  602  DL1SL ON6AA R+00
180515  +4 2433  ON6AA DL1SL RR73
180530  +5  602  DL1SL ON6AA 73
180545  +0 2433  F6FHZ DL1SL -07 (x2)
180645  +0 2433  LB1UK DL1SL JN48
180700  -5 2553  DL1SL LB1UK -06
180715  -1 2433  LB1UK DL1SL R-04
180730  -8 2553  DL1SL LB1UK RR73
180745 -10 2433  LB1UK DL1SL 73

20m

UTC    dB Audio  Message
180915  -6 2179  JA9ELE DL1SL 73 (x2)
181000 -11  747  DL1SL TC30AGU -05
181015  -6 2179  JA9ELE DL1SL R+02
181145 -14 2179  AA3B DL1SL JN48 (x6)
160245 -22 1678  CQ DL1SL JN48 (x2)
160415 -19 1677  DM2BM DL1SL -07 (x2)
160645 -17 1677  EP2AES DL1SL JN48

40m

UTC    dB Audio  Message
030445 -12 1339  KV1J DL1SL JN48 (x2)
091515 -19 1339  DK1XAM DL1SL JN48 (x2)
091800 -18 1540  DL1SL OE/DG7CF -02
065100 -11 2190  AA3B DL1SL JN48 (x2)

80m

UTC    dB Audio  Message
031430 +12 2403  DL1SL DO9BAU JO62
031445  -4 1303  DO9BAU DL1SL -09
031500 +13 2402  DL1SL DO9BAU R-11
031515  -1 1303  DO9BAU DL1SL RR73
031530  +1 1566  DL1SL S52UF JN76
031530 +13 2403  DL1SL DO9BAU 73
031545  -5 1303  S52UF DL1SL +00
031600  +3 1565  DL1SL S52UF R-02
031615  +1 1303  S52UF DL1SL RR73
031630  +4 1565  DL1SL S52UF 73
031700  -4 1304  DL1UDO DL1SL JN48 (x2)
031745  +2 1501  DL1SL DL1UDO RR73
031800  +4 1304  DL1UDO DL1SL 73
194200 -19 1654  VL4A DL1SL JN48

10m

UTC    dB Audio  Message
195630  -8 1844  G4DBW DL1SL R-08 (x2)
195730 -13 1844  9A2WA DL1SL -13 (x2)
195830 -17 1844  OZ2SPACE DL1SL JN48 (x3)
200045 -14 1844  OZ5WT DL1SL JN48 (x4)
200230 -13  869  DL1SL OZ5WT +05
200245 -18 1844  OZ5WT DL1SL R+00
200300 -13  869  DL1SL OZ5WT RR73
200315 -12 1844  OZ5WT DL1SL 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.

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