DL8SDC — 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 DL8SDC, decoded by SO8OO in southeastern Poland. 71 FT8 messages attributed to this token as transmitter, on 160m, 40m, 20m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-10 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 71 FT8 messages attributed to DL8SDC as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (56%), followed by 10 m (27%) and 40 m (15%). Most decodes (72%) fell within the six-hour window 10:00-16:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was -1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

160m · 1 40m · 11 20m · 40 10m · 19

First attributed message: 2026-06-10
Last attributed message: 2026-09-20 18:22 UTC

Observed FT8 message patterns

Attributed sample: 71 messages
Active dates: 10 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -13 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 53.

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 DL8SDC in decoded directed-looking exchanges:

EX7CQ · Kyrgyzstan OZ5AGJ · Denmark UR9QQ · Ukraine LA9GX · Norway OK1DXR · Czech Republic OM3SX · Slovak Republic 9M2HUS · West Malaysia F5RRS · France R4FDW · European Russia VK3HA · Australia YC1SNI · Indonesia

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 DL8SDC

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 · 54 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 941 km (approx.)
Last such locator decoded: 2026-09-20 18:22 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	DL8SDC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 17:27	160m	- / -14	OK1DXR	-3 / -	5	✓ Closing fragment
09-17 17:27	160m	- / -8	OM3SX	+10 / -	3	✓ Closing fragment
09-17 17:24	160m	- / -9	LA9GX	-10 / -	2	✓ Closing fragment
08-31 06:41	40m	-10 / -	OA4ENG	- / -	3	Partial capture
08-27 07:26	20m	+5 / -	AH6WP	- / -	4	Partial capture
08-27 07:19	20m	-5 / -	R4FDW	- / -14	2	✓ Closing fragment
08-27 07:17	20m	-13 / -15	F5RRS	+10 / -19	4	✓ Full exchange observed
08-15 17:07	20m	- / -6	F5NNN	-22 / -	2	Partial capture
07-14 14:33	20m	-12 / -	VK2LAW	- / -19	4	Partial capture
07-14 14:21	20m	+2 / -	YC1SNI	- / -13	2	✓ Closing fragment
07-14 14:17	20m	0 / -	9M2HUS	- / -18	5	✓ Closing fragment
07-14 14:07	20m	+5 / -	9W8ZZK	- / -	12	Partial capture
07-14 13:42	20m	+2 / -	T22TT	- / -	8	Partial capture
07-05 10:37	10m	+4 / -	II7WWA	- / -	2	Partial capture
07-05 10:36	10m	-4 / -	II9WWA	- / -	2	Partial capture
07-05 10:27	10m	-9 / -	II9WWA	- / -	2	Partial capture
07-05 10:18	10m	+8 / -	UR9QQ	- / +8	2	✓ Closing fragment
07-05 10:17	10m	- / -	PD9FLX	+6 / -	2	Partial capture
07-05 10:16	10m	-6 / -	OZ5AGJ	- / -2	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
172415  -8  855  DL8SDC LA9GX -09 (x2)
172745  +3 2543  DL8SDC SQ9PBV JN99
172745 +11 2302  DL8SDC OM3SX KN08
172745  +3 1295  DL8SDC OK1DXR JO60
172815 +11 2302  DL8SDC OM3SX R-08
172815  +0 1295  DL8SDC OK1DXR JO60
172845  +9 2302  DL8SDC OM3SX 73
172845  -8 1295  DL8SDC OK1DXR JO60 (x3)
182230  -8 2598  4X1UF DL8SDC JN48

10m

UTC    dB Audio  Message
101700  -8 2707  CQ DL8SDC JN48                        a1 (x2)
101745  +2 2677  DL8SDC PD9FLX JO22
101800  +5 2707  CQ DL8SDC JN48
101815  +9 2677  DL8SDC PD9FLX JO22
101830  +8 2706  UR9QQ DL8SDC +08 (x2)
102100  -1 2707  Z61DX DL8SDC JN48
102730 -15 1557  II9WWA DL8SDC JN48 (x4)
103730  +2 2366  II7WWA DL8SDC JN48 (x2)
073530 -19 1770  DL8SDC EX7CQ RR73

40m

UTC    dB Audio  Message
063715 -19 2419  OA4ENG DL8SDC JN48 (x4)
064515 -10 2741  NF3R DL8SDC JN48
161145 +17 2945  MI7XHT DL8SDC JN48

20m

UTC    dB Audio  Message
143430 -10 1913  VK2LAW DL8SDC R-19
143645 -24 1914  DL8SDC DM3TW -11
170730 -21 1917  DL8SDC F5NNN IN94 (x2)
071700  -6 2986  VK3HA DL8SDC 73
071715 +11 1904  DL8SDC F5RRS JN36
071730 -13 2986  F5RRS DL8SDC -19
071745 +10 1904  DL8SDC F5RRS R-15 (x2)
071930 -10 2987  R4FDW DL8SDC R-14 (x2)
072615  +6 3053  AH6WP DL8SDC JN48 (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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