DK9CK — 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: JO30

Receiver-side FT8 activity involving DK9CK, decoded by SO8OO in southeastern Poland. 361 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 20 UTC dates in the available aggregate history. Observed between 2026-07-08 and 2026-10-10.

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 361 FT8 messages attributed to DK9CK as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (43%), followed by 40 m (40%) and 60 m (15%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

361

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 157 60m · 54 40m · 143 20m · 7

First attributed message: 2026-07-08
Last attributed message: 2026-10-10 21:34 UTC

Observed FT8 message patterns

Attributed sample: 361 messages
Active dates: 20 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -19 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 72, moderate (-15 to -9 dB) 103, strong (≥ -8 dB) 186.

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 DK9CK in decoded directed-looking exchanges:

IZ8PPI · Italy ×2 BH8FSI · China CN8WK · Morocco EA8AID · Canary Islands G4ATX · England C5R · The Gambia DJ0MAB · Fed. Rep. of Germany DL7ACA · Fed. Rep. of Germany IU8RFW · Italy JA4DLF · Japan K1SM · United States K2TQC · United States

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 DK9CK

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: JO30 · 204 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,053 km (approx.)
Last such locator decoded: 2026-10-10 21:33 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	DK9CK S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-10 21:33	80m	+3 / -	SQ8AZT	- / -5	3	✓ Closing fragment
10-10 21:31	80m	-1 / -	UF4S	- / -	3	Partial capture
10-10 21:29	80m	-4 / -9	G4FHL	+6 / -3	4	✓ Full exchange observed
10-10 21:25	80m	-4 / -	EA5FDA	-16 / -13	5	✓ Closing observed
10-10 21:05	80m	-2 / -15	V51WH	-14 / -18	15	✓ Full exchange observed
10-10 21:01	80m	-10 / -	F4IVG	-6 / -6	3	✓ Closing observed
10-07 21:33	80m	-8 / -4	9A3AUH	+2 / -6	6	✓ Full exchange observed
10-07 21:33	80m	-4 / +10	DJ3ZF	-3 / -7	5	✓ Full exchange observed
10-07 21:32	80m	-5 / -7	I8OHQ	+1 / -11	5	✓ Full exchange observed
10-07 21:23	60m	-22 / -	J48S	- / -	2	Partial capture
10-05 21:51	40m	-2 / -	WV2B	- / -	4	Partial capture
10-05 21:45	40m	-1 / -	WV2B	- / -	4	Partial capture
10-05 21:43	40m	-3 / -	KO4TST	- / -22	3	✓ Closing fragment
10-05 21:39	40m	-2 / -	K2TQC	- / -	2	✓ Closing fragment
10-05 21:34	40m	-7 / -	PS7RW	- / -10	6	✓ Closing fragment
10-05 21:31	40m	-10 / -	NF3R	- / -	3	✓ Closing fragment
10-05 21:26	40m	-8 / -	VP8A	- / -	6	Partial capture
10-05 21:24	40m	-5 / -	JA4DLF	- / -16	3	✓ Closing fragment
10-05 21:16	40m	-4 / -9	UN0GY	-15 / -8	7	Partial capture
10-05 21:13	40m	-13 / -	J48S	- / -18	2	Partial capture
10-05 21:10	40m	-12 / -	IZ8PPI	- / -8	2	✓ Closing fragment
10-05 21:05	40m	-5 / -	TJ1GD	- / -8	2	Partial capture
10-01 21:42	160m	- / -19	G4ATX	+6 / -	2	✓ Closing fragment
10-01 21:28	80m	-4 / -	F4NGR	- / -5	6	Partial capture
10-01 21:24	80m	-7 / -10	SM7TZK	0 / -13	6	✓ Full exchange observed
10-01 21:21	80m	-3 / -	SQ2RAD	- / -	3	Partial capture
10-01 21:19	80m	-4 / -	TF4M	- / -13	2	Partial capture
10-01 21:07	40m	-4 / -10	IU8RFW	-6 / -13	6	✓ Full exchange observed
10-01 21:06	40m	-6 / -	LY4Q	- / -14	2	✓ Closing fragment
10-01 21:04	40m	-1 / -	SV3CEZ	- / -5	3	✓ Closing fragment
09-30 20:31	60m	-16 / -20	DL1WU	-15 / -	5	✓ Closing observed
09-30 20:30	60m	-18 / -4	M0LOW	-8 / -	3	✓ Closing observed
09-30 20:28	60m	- / -17	DJ1TU	-3 / -	3	✓ Closing fragment
09-30 20:28	60m	-16 / -	G7RTI	-8 / -	2	✓ Closing observed
09-28 20:48	80m	-4 / -	R6NA	- / -	3	Partial capture
09-28 20:44	80m	-5 / -	ER4KAA	- / -	7	Partial capture
09-25 12:54	10m	- / -5	CN8WK	+8 / -	2	✓ Closing fragment
09-24 18:51	60m	-17 / -	DL2VN	- / -	2	Partial capture
09-24 18:49	60m	- / -2	SP6U	-12 / -	2	Partial capture
09-24 18:45	60m	-19 / -7	GI4SNA	0 / -	3	✓ Closing observed
09-24 18:43	60m	-17 / -	SP6U	- / -	2	Partial capture
09-24 18:40	60m	-14 / -12	IK4CBO	-1 / +8	6	✓ Full exchange observed
09-24 18:39	60m	-16 / -12	F5RMK	-5 / -	5	✓ Full exchange observed
09-23 20:28	60m	- / -26	TF3VG	-15 / -	3	✓ Closing fragment
09-23 09:21	10m	- / -14	BH8FSI	-20 / -	2	✓ Closing fragment
09-19 21:16	80m	-1 / -	EW8AAC	- / -	4	Partial capture
09-19 21:13	80m	-7 / +1	LZ2XA	+11 / -4	5	✓ Full exchange observed
09-19 19:22	80m	-6 / -	V51WH	- / -	4	Partial capture
09-19 19:18	80m	-11 / -	V51WH	- / -	3	Partial capture
09-19 19:03	80m	-7 / -	V51WH	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
212545  -5 2005  EA5FDA DK9CK JO30 (x3)
212700 -16  956  DK9CK EA5FDA RR73
212715  -1 2005  EA5FDA DK9CK 73
212930  +9 2363  DK9CK G4FHL -09
212945  -5 2005  G4FHL DK9CK R-03
213000  +4 2364  DK9CK G4FHL RR73
213015  -2 2005  G4FHL DK9CK 73
213145  +2 2135  UF4S DK9CK JO30 (x3)
213345  +1 2135  SQ8AZT DK9CK JO30 (x3)

60m

UTC    dB Audio  Message
202800  -8  429  DK9CK G7RTI RR73
202815 -16 2278  G7RTI DK9CK 73
202830  -2 2067  DK9CK DJ1TU JN48 (x3)
203045  -8  330  DK9CK M0LOW -04
203100 -18 2341  DL1WU DK9CK JO30
203145  -9  331  DK9CK M0LOW RR73
203145 -17 2470  DK9CK DL1WU -20
203200 -18 2341  M0LOW DK9CK 73
203215 -16 2470  DK9CK DL1WU -20 (x2)
203330 -14 2341  DL1WU DK9CK 73
212345 -23 1829  J48S DK9CK JO30 (x2)

40m

UTC    dB Audio  Message
213630  -6 2278  PS7RW DK9CK 73 (x2)
213915  -7 2277  K2TQC DK9CK JO30 (x2)
214300  +4 2277  KO4TST DK9CK R-22 (x3)
214500  -7 2277  WV2B DK9CK JO30 (x8)

160m

UTC    dB Audio  Message
180015  -7  629  DK9CK DJ2TI -07
214200  +7  765  DK9CK G4ATX -19 (x2)

10m

UTC    dB Audio  Message
132030 -24 1594  DK9CK EA8AID RR73
092145 -16 2434  DK9CK BH8FSI -14 (x2)
125415  +8  717  DK9CK CN8WK -05 (x2)

20m

UTC    dB Audio  Message
204530 -22 1837  9J2FI DK9CK JO30 (x7)

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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