DK4RL — 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: JO61

Receiver-side FT8 activity involving DK4RL, decoded by SO8OO in southeastern Poland. 193 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-11-07.

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 193 FT8 messages attributed to DK4RL as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 60 m (18%) and 80 m (10%). Most decodes (58%) fell within the six-hour window 11:00-17:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (60%); the estimated median was -7 dB.

Overview

193

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

80m · 19 60m · 34 40m · 140

First attributed message: 2026-08-26
Last attributed message: 2026-11-07 15:44 UTC

Observed FT8 message patterns

Attributed sample: 193 messages
Active dates: 7 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -14 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 65, strong (≥ -8 dB) 116.

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 DK4RL in decoded directed-looking exchanges:

DL1UDO · Fed. Rep. of Germany ×2 CR7BUJ · Portugal ZL2BX · New Zealand CT7AUT · Portugal DA0M · Fed. Rep. of Germany DB2GM · Fed. Rep. of Germany DC9GT · Fed. Rep. of Germany DD1OO · Fed. Rep. of Germany DH1HF · Fed. Rep. of Germany DJ3HW · Fed. Rep. of Germany DJ8TX · Fed. Rep. of Germany DK5FN · Fed. Rep. of Germany

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 DK4RL

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: JO61 · 92 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 642 km (approx.)
Last such locator decoded: 2026-11-07 15:43 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	DK4RL S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-07 14:14	40m	-8 / -20	UA3GDJ	-5 / -	4	✓ Closing observed
11-07 14:11	40m	-6 / 0	DD1OO	-2 / -	6	✓ Full exchange observed
11-01 11:54	40m	-8 / -	DL1AG	- / -1	2	✓ Closing fragment
11-01 11:53	40m	-8 / +7	OK1DXR	+1 / -	5	✓ Full exchange observed
11-01 11:50	40m	-10 / -	ON4JL	-18 / +7	3	Partial capture
11-01 11:45	40m	-14 / -	PE1BOL	- / -7	2	✓ Closing fragment
11-01 11:43	40m	-18 / +1	DL5DQZ	+2 / -	4	✓ Full exchange observed
11-01 11:41	40m	-11 / -	DA0M	-10 / -3	4	✓ Closing observed
11-01 11:41	40m	-14 / +3	DM5ME	-8 / +1	5	✓ Full exchange observed
11-01 11:39	40m	-12 / -12	IN3LHF	-16 / -5	3	✓ Full exchange observed
11-01 11:38	40m	-10 / -	ON1DGN	- / -	2	✓ Closing fragment
11-01 11:23	40m	-5 / -6	F1PBZ	-15 / +7	5	✓ Full exchange observed
11-01 11:17	40m	- / +6	IU2THY	0 / -	3	Partial capture
11-01 11:17	40m	- / -	ON3PDM	-10 / -	2	Partial capture
10-17 12:15	10m	- / -3	CR7BUJ	-8 / -	2	✓ Closing fragment
10-17 12:11	40m	-8 / -	SP8WB	- / -	3	Partial capture
10-17 12:09	40m	-6 / -	DC9GT	- / -18	2	✓ Closing fragment
10-17 12:07	40m	-8 / -	DJ3HW	-14 / +8	6	✓ Full exchange observed
10-17 12:06	40m	- / +1	DL6EL	-12 / -	6	Partial capture
10-17 12:06	40m	-2 / -	PD4RJ	- / +2	2	✓ Closing fragment
10-17 12:06	40m	0 / +10	DK0KG	-18 / -4	5	Partial capture
10-17 12:01	40m	-6 / -	DH1HF	- / -7	2	✓ Closing fragment
10-17 12:00	40m	-7 / -	PH9OY	- / -3	2	✓ Closing fragment
10-17 11:24	10m	- / -15	SX37VER	-4 / -	2	Partial capture
10-10 16:00	40m	+1 / -	DK5FN	- / -9	2	✓ Closing fragment
10-10 15:58	40m	+2 / -7	F1IQH	-8 / -11	4	✓ Full exchange observed
10-10 15:57	40m	+5 / -	DM3BN	+2 / -6	3	✓ Closing observed
10-10 15:56	40m	0 / +4	DB2GM	0 / -10	5	✓ Full exchange observed
09-19 15:30	60m	-5 / -	5Q1X	- / -2	3	Partial capture
09-19 15:28	40m	+4 / -	DJ8TX	- / -19	2	✓ Closing fragment
09-19 15:25	40m	+9 / +8	DL6ZOG	+1 / -7	5	✓ Full exchange observed
09-19 15:22	40m	+4 / -	3Z100PKP	- / -	2	Partial capture
09-19 15:19	40m	+3 / -	F6FHZ	- / -18	4	✓ Closing fragment
09-19 15:16	40m	+6 / -	GW6OHV	- / -16	4	✓ Closing fragment
09-19 15:15	40m	+2 / 0	EI6JMB	-11 / -7	3	✓ Full exchange observed
09-19 15:14	40m	+6 / -	II4IANT	- / -	2	Partial capture
09-19 15:10	40m	+8 / -	SN100PKP	- / +4	6	Partial capture
09-11 09:25	40m	-10 / -9	SP7VCL	-2 / +10	6	✓ Full exchange observed
09-11 09:24	40m	-12 / -	DK9EU	- / -1	2	✓ Closing fragment
09-11 09:22	40m	-10 / -12	IK4TVP	-20 / +1	3	Partial capture
09-11 09:21	40m	-14 / -8	DL3MIB	-5 / -	7	✓ Full exchange observed
09-11 09:21	40m	-13 / -	F4BYA	-6 / -	3	✓ Closing observed
09-11 09:20	40m	- / -	OK3MB	-19 / -	2	Partial capture
09-11 08:57	40m	-17 / -3	HG0NPJ	+4 / -1	5	✓ Full exchange observed
09-11 08:49	40m	-16 / -16	F5RRS	-5 / -2	6	✓ Full exchange observed
09-11 08:47	40m	-12 / -4	OZ9FF	-7 / -	6	✓ Full exchange observed
08-26 05:48	20m	- / +9	ZL2BX	-8 / -	2	✓ Closing fragment
08-26 05:37	40m	+1 / -	MW7TTA	- / -19	4	✓ Closing fragment
08-26 05:34	80m	-6 / +5	DO2NM	-10 / -	4	✓ Full exchange observed
08-26 05:33	80m	-8 / -3	DO7RMS	-8 / -	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
052145 -17  870  DK4RL DJ1NE JN39
052200  -9  745  DJ1NE DK4RL +12
052215 -15  870  DK4RL DJ1NE R-02
052230 -10  745  DJ1NE DK4RL RR73
052245 -16  870  DK4RL DJ1NE 73
052300  -7  745  CQ DK4RL JO61 (x3)
052530  -8  745  ZL4OL DK4RL JO61
153030  -3  945  5Q1X DK4RL JO61 (x3)
154145 -17  235  CQ DK4RL JO61 (x2)
154400  -9 2178  DJ1PQ DK4RL -14

80m

UTC    dB Audio  Message
053315  -9 1103  DK4RL DO7RMS R-03
053330  -9  717  DO7RMS DK4RL RR73
053345  -6 1103  DK4RL DO7RMS 73
053400 -11  716  CQ DK4RL JO61 (x2)
053445 -10  717  DK4RL DO2NM JO50
053500  -6  717  DO2NM DK4RL +20
053515 -10  717  DK4RL DO2NM R+05
053530  -6  716  DO2NM DK4RL RR73
053630  -8  716  CQ DK4RL JO61 (x6)

40m

UTC    dB Audio  Message
115415  -7 2580  DL1AG DK4RL -01 (x2)
141130  -1  700  DK4RL DD1OO JN49
141145  +5  701  CQ DK4RL JO61
141200  -1  700  DK4RL DD1OO JN49
141215  -1 2092  DD1OO DK4RL +14
141230  -2  700  DK4RL DD1OO R+00
141245 -10 2092  DD1OO DK4RL RR73
141300  -3  700  DK4RL DD1OO 73
141345  -9 2092  CQ DK4RL JO61
141400  -7 2092  DK4RL UA3GDJ KO92 (x2)
141430 -18 2209  DK4RL PA3GHJ +02
141445  -8 2092  UA3GDJ DK4RL RR73
141500  -4 2092  DK4RL UA3GDJ 73

10m

UTC    dB Audio  Message
112400  -7 1373  DK4RL SX37VER -15 (x2)
121515  -7 1167  DK4RL CR7BUJ -03 (x2)

20m

UTC    dB Audio  Message
054845  -7  635  DK4RL ZL2BX +09 (x2)

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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