DL4KSD — 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: JO71

Receiver-side FT8 activity involving DL4KSD, decoded by SO8OO in southeastern Poland. 3,632 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 68 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-22.

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 3,632 FT8 messages attributed to DL4KSD as the transmitting token by decoded message structure across 68 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (42%), followed by 60 m (30%) and 160 m (16%). Most decodes (89%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was -3 dB.

Overview

3,632

Messages attributed

UTC dates decoded

266

Active 15-min windows

-3 dB

Estimated median S/N

Bands

160m · 572 80m · 1,543 60m · 1,102 40m · 281 20m · 119 10m · 15

First attributed message: 2026-06-07
Last attributed message: 2026-10-22 15:33 UTC

Observed FT8 message patterns

Attributed sample: 3,632 messages
Active dates: 68 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -12.8 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 167, moderate (-15 to -9 dB) 671, strong (≥ -8 dB) 2,794.

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 DL4KSD in decoded directed-looking exchanges:

F1PBZ · France ×4 SP2LLP · Poland ×3 DL4BCY · Fed. Rep. of Germany ×2 IK4OLQ · Italy ×2 IS0JHQ · Sardinia ×2 M0IOY · England ×2 OH3NXW · Finland ×2 OZ2LP · Denmark ×2 RK1AS · European Russia ×2 SQ8NGI · Poland ×2 SV2JAO · Greece ×2 UB3IBG · European Russia ×2

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 DL4KSD

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: JO71 · 2,099 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 508 km (approx.)
Last such locator decoded: 2026-10-22 15:33 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	DL4KSD S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 15:28	40m	-5 / -	F1EUC	- / -7	7	✓ Closing fragment
10-22 15:27	40m	-7 / -4	OE6PVG	+3 / -8	3	Partial capture
10-22 15:24	40m	-10 / -20	R1AV	-5 / -9	12	✓ Full exchange observed
10-22 15:24	40m	- / -	RZ4FWA	-22 / -	3	Partial capture
10-22 15:20	40m	-7 / -12	R8CKV	-4 / -6	7	✓ Full exchange observed
10-22 15:17	40m	- / +4	DL9DAJ	-3 / -	3	✓ Closing fragment
10-22 15:11	40m	-9 / -	LB8TG	- / -	3	✓ Closing fragment
10-22 15:08	40m	-10 / -	PA3DRQ	- / -10	3	✓ Closing fragment
10-22 15:04	40m	-7 / 0	DH9DR	+8 / +2	6	✓ Full exchange observed
10-18 22:28	80m	-2 / -6	RA2FKD	+10 / +1	4	✓ Full exchange observed
10-18 22:25	80m	0 / -	EA3IJQ	- / -13	3	✓ Closing fragment
10-18 22:23	80m	-2 / -8	DC4CP	+10 / +1	4	✓ Full exchange observed
10-18 22:18	80m	-3 / -5	SP4TXI	+11 / -	3	✓ Closing observed
10-18 22:16	80m	-7 / -14	UA3IDQ	0 / -1	5	✓ Full exchange observed
10-18 22:15	80m	-10 / -	G0BAZ	- / -5	2	✓ Closing fragment
10-18 22:11	80m	-12 / -18	IU4UWH	-6 / +1	4	✓ Full exchange observed
10-18 22:03	60m	- / -5	LA9JKA	-13 / -	4	✓ Closing fragment
10-18 22:03	60m	-21 / -5	DK3WN	-14 / -	3	✓ Closing observed
10-18 21:58	60m	-18 / -1	OZ1MAX	-11 / -3	6	✓ Full exchange observed
10-18 21:54	60m	- / -	VE1YX	-10 / -	2	Partial capture
10-18 21:47	60m	- / -9	DL1MST	+2 / -	3	✓ Closing fragment
10-18 21:35	60m	- / -	VE1YX	-20 / -	2	Partial capture
10-18 21:04	40m	- / -	EA3BBA	+4 / -	2	✓ Closing fragment
10-18 20:46	40m	- / -1	EA2AGW	-10 / -	3	✓ Closing fragment
10-18 20:32	160m	-12 / -	IZ8FWN	- / -	2	Partial capture
10-18 17:59	160m	-14 / -16	OK1VKX	-4 / -13	4	✓ Full exchange observed
10-18 17:56	160m	-16 / -	E70SZ	- / -	2	Partial capture
10-18 17:52	160m	-14 / -	OH8GBO	- / -	2	✓ Closing fragment
10-18 17:49	160m	-12 / -	OZ2LP	- / -	2	✓ Closing fragment
10-18 17:47	160m	-10 / -5	SP3HCA	+1 / +1	6	✓ Full exchange observed
10-18 17:43	160m	-13 / -	UN0GY	- / -	7	Partial capture
10-18 17:42	160m	-11 / -	F5SOI	- / -	2	Partial capture
10-18 17:40	160m	-14 / -	OH7GGX	- / -	2	Partial capture
10-18 08:33	40m	-11 / -2	DL1RMY	-10 / -	3	✓ Closing observed
10-18 08:32	40m	-14 / -5	F1PBZ	-5 / -	4	✓ Closing observed
10-17 22:47	160m	-11 / -	SM7TZK	- / -22	20	Partial capture
10-17 22:45	160m	+4 / -	RA9YTI	- / -	2	Partial capture
10-17 22:44	160m	-2 / -	LA9JKA	- / -	2	Partial capture
10-17 22:42	160m	+1 / -	G4UJS	- / -15	4	✓ Closing fragment
10-17 22:41	160m	-1 / -19	UA7K	+4 / +3	5	✓ Full exchange observed
10-17 22:38	160m	-1 / -17	IS0JHQ	-7 / 0	7	✓ Full exchange observed
10-17 21:55	60m	- / -16	HA8BT	-17 / -	3	✓ Closing fragment
10-17 21:46	80m	0 / -	DO1OSE	- / -	2	Partial capture
10-17 21:43	80m	0 / -	F1IQH	- / -8	3	✓ Closing fragment
10-17 21:41	80m	+2 / -	HB3YBU	- / -	2	Partial capture
10-17 21:38	80m	+2 / -	UN0GY	- / -	2	Partial capture
10-17 21:35	80m	+1 / -7	DJ1TU	+2 / +3	4	✓ Full exchange observed
10-17 21:28	80m	+3 / -6	DA6OOM	-13 / -	6	✓ Closing observed
10-17 21:26	80m	+2 / -	IU8GUK	- / -13	2	Partial capture
10-17 21:21	80m	-3 / -	UN0GY	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
152715  -7 2707  OE6PVG DL4KSD -08
152730  +7 2706  DL4KSD OE6PVG R-04
152830  -4 2706  DL4KSD R1AV R-20
152845  -5 2707  F1EUC DL4KSD JO71
152900  -2 2706  DL4KSD R1AV R-20
152915  +1 2707  F1EUC DL4KSD R-07
152930  -3 2706  DL4KSD R1AV R-20
152945  -3 2707  F1EUC DL4KSD R-07
153000  -3 2706  DL4KSD R1AV R-20
153015  -8 2707  F1EUC DL4KSD 73 (x4)
153315  -9 2707  M7FSE DL4KSD JO71
153345 -10 2707  UC8S DL4KSD JO71

80m

UTC    dB Audio  Message
222330 +10  632  DL4KSD DC4CP -08
222345  -7  633  DC4CP DL4KSD R+01
222400 +10  632  DL4KSD DC4CP RR73
222545  -1  505  EA3IJQ DL4KSD JO71 (x3)
222745  -3  564  SP9EVL DL4KSD JO71
222815  -1  692  RA2FKD DL4KSD JO71
222830 +11  692  DL4KSD RA2FKD -06
222845  -4  692  RA2FKD DL4KSD R+01
222900 +10  692  DL4KSD RA2FKD RR73
063415  -8 1268  DO8JB DL4KSD JO71
063445 -14 2150  CQ DL4KSD JO71 (x3)

160m

UTC    dB Audio  Message
180300 -15 1628  CQ DL4KSD JO71 (x9)
203115 -14 1827  RA0AF DL4KSD JO71
203215  -9 1827  IZ8FWN DL4KSD JO71 (x2)
232730  -9 1056  CQ DL4KSD JO71 (x3)

60m

UTC    dB Audio  Message
215445 -11  928  DL4KSD G0WZM RR73
215515  -9 1207  DL4KSD VE1YX FN74
215845  -8 1034  DL4KSD OZ1MAX -01
215900 -17 1035  OZ1MAX DL4KSD R-03
215915 -16 1034  DL4KSD OZ1MAX RR73 (x2)
220130 -19 1033  OZ1MAX DL4KSD 73
220145 -10 1034  DL4KSD OZ1MAX 73
220300 -21 1768  DK3WN DL4KSD JO71
220315 -17 1768  DL4KSD DK3WN -05
220345 -11 1655  DL4KSD LA9JKA -05
220345 -10 1768  DL4KSD DK3WN RR73
220445 -15 1656  DL4KSD LA9JKA -05 (x3)

10m

UTC    dB Audio  Message
154700 -16 1751  DL4KSD RW3DW RR73
202445  -9 1292  DL4KSD RT6Z -09 (x2)
204145  -3 2794  DL4KSD R6OD KN87
073430 -12 1795  DL4KSD PA3EVY +00 (x2)
073630 -20 2113  DL4KSD R6DWD -10
074730 -16  922  DL4KSD DO1FKM 73
082700 -16 2329  DL4KSD UN6LN +07 (x2)
152330 -24 1502  DL4KSD EA7R -05 (x2)
144200 -23 1637  DL4KSD C5R +00
144500 -24 1637  DL4KSD RR73; SA4JAJ <...> -14
145800 -24 1637  DL4KSD C5R +03

20m

UTC    dB Audio  Message
122700  -8 2663  DL4KSD PD1HBL JO21 (x2)
095815  +5 2187  DL4KSD F1ODM -06 (x2)
213215 -19 1983  DL4KSD KA8YGL -10
213945  -6 2565  DL4KSD WA1ZYX -19 (x5)
221745  +3  601  DL4KSD W1AW/2 -11
222645 -12 1813  DL4KSD KB3Z FN20 (x3)
225715  -5  541  DL4KSD S55P RR73

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

CW history is temporarily unavailable.

Explore CW reception at SO8OO

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