DK4RL — FT8 activity observed at SO8OO

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. 121 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-09-19.

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 121 FT8 messages attributed to DK4RL as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (63%), followed by 60 m (26%) and 80 m (12%). Most decodes (68%) fell within the six-hour window 04:00-10:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -6 dB.

Overview

121

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 14 60m · 31 40m · 76

First attributed message: 2026-08-26
Last attributed message: 2026-09-19 15:32 UTC

Observed FT8 message patterns

Attributed sample: 121 messages
Active dates: 3 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -14 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 39, strong (≥ -8 dB) 75.

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 ZL2BX · New Zealand CT7AUT · Portugal DJ8TX · Fed. Rep. of Germany DK9EU · Fed. Rep. of Germany DL3MIB · Fed. Rep. of Germany DL6ZOG · Fed. Rep. of Germany EI6JMB · Ireland F4BYA · France F5RRS · France F6FHZ · France GW6OHV · Wales

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 · 61 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 642 km (approx.)
Last such locator decoded: 2026-09-19 15:31 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
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
08-26 05:30	80m	-10 / -	DO1OAS	-9 / -	2	✓ Closing observed
08-26 05:29	80m	-5 / -16	DL1UDO	-18 / -	6	✓ Full exchange observed
08-26 05:21	60m	-10 / -2	DJ1NE	-16 / -	5	✓ Full exchange observed
08-26 05:19	60m	-8 / +4	DL1UDO	-12 / -	5	✓ Full exchange observed
08-26 05:18	60m	-10 / +1	DD6ZV	+4 / +5	5	✓ Full exchange observed
08-26 05:17	60m	-12 / -	EA6BH	- / -	2	Partial capture
08-26 05:15	60m	-6 / -	ON7KEI	-23 / +2	4	✓ Closing observed
08-26 05:13	60m	-8 / -6	DL2RPN	-3 / -	5	✓ Full exchange observed
08-26 05:12	60m	-14 / -	F5LMJ	- / -1	2	✓ Closing fragment
08-26 05:10	60m	-9 / -	G3SHK	- / +7	4	✓ Closing fragment
08-26 04:45	40m	+8 / -	AF3G	- / -	2	Partial capture
08-26 04:43	40m	- / -	F1IQH	-7 / -	3	Partial capture
08-26 04:40	40m	+15 / -4	UT5MB	+10 / -	3	✓ Closing observed
08-26 04:39	40m	+14 / -3	LZ2VQ	0 / -19	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
052045 -10 1529  DK4RL DL1UDO 73
052100  -4  745  CQ DK4RL JO61 (x2)
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)

40m

UTC    dB Audio  Message
152315  +1  308  CQ DK4RL JO61 (x3)
152515  +2 1964  DK4RL DL6ZOG JO52
152530 +10  464  DL6ZOG DK4RL -07
152545  +3 1964  DK4RL DL6ZOG R+08
152600  +8  464  DL6ZOG DK4RL RR73
152615  -2 1964  DK4RL DL6ZOG 73
152630  +6  464  CQ DK4RL JO61 (x4)
152845  +7  464  DJ8TX DK4RL -19 (x2)
153000 -14 1157  DK4RL RU3FM KO94

20m

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

80m

UTC    dB Audio  Message
053130  -7  717  DL1UDO DK4RL RR73
053145 -17 1300  DK4RL DL1UDO 73
053200 -12  716  CQ DK4RL JO61                         a1 (x2)
053300  -7  716  DO7RMS DK4RL +15
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

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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