DL4HTK — 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: JO51

Receiver-side FT8 activity involving DL4HTK, decoded by SO8OO in southeastern Poland. 1,135 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 47 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-19.

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 1,135 FT8 messages attributed to DL4HTK as the transmitting token by decoded message structure across 47 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (63%), followed by 60 m (25%) and 40 m (8%). Most decodes (51%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

1,135

Messages attributed

UTC dates decoded

166

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 719 60m · 282 40m · 86 20m · 46 10m · 2

First attributed message: 2026-06-09
Last attributed message: 2026-10-19 04:04 UTC

Observed FT8 message patterns

Attributed sample: 1,135 messages
Active dates: 47 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -18 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 192, moderate (-15 to -9 dB) 349, strong (≥ -8 dB) 594.

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 DL4HTK in decoded directed-looking exchanges:

G6PWS · England ×3 LZ1EV · Bulgaria ×2 LZ2VQ · Bulgaria ×2 MM0KQC · Scotland ×2 SP9UPH · Poland ×2 DD4U · Fed. Rep. of Germany ×2 DG4BZ · Fed. Rep. of Germany ×2 EC3A · Spain ×2 F4GAJ · France ×2 F5MYK · France ×2 F5RAV · France ×2 IN3IZQ · Italy ×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 DL4HTK

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: JO51 · 596 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 779 km (approx.)
Last such locator decoded: 2026-10-19 04:03 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	DL4HTK S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-19 04:03	80m	-2 / -10	PA3GDL	-3 / -6	4	✓ Full exchange observed
10-19 03:30	60m	-14 / +3	F5MXH	-6 / +9	7	✓ Full exchange observed
10-19 03:29	60m	-8 / -19	EB1LA	-3 / -5	5	✓ Full exchange observed
10-19 03:27	60m	-10 / -	RZ4FWA	- / -	2	Partial capture
10-19 03:11	40m	- / -23	RZ6L	-1 / -	2	✓ Closing fragment
10-18 21:11	80m	- / -14	DO9POL	-7 / -	11	Partial capture
10-18 21:03	80m	-8 / -	TF4M	- / -	2	Partial capture
10-18 21:00	80m	-8 / -3	F4EWK	-12 / 0	5	✓ Full exchange observed
10-18 20:59	80m	0 / -	DO9POL	- / -	2	Partial capture
10-18 20:56	80m	- / -9	OK2AB	+2 / -	2	✓ Closing fragment
10-16 21:33	80m	-12 / -5	DM3ER	-10 / -	4	✓ Full exchange observed
10-16 21:25	80m	-8 / -13	R1CBW	-2 / -1	7	✓ Full exchange observed
10-16 21:22	80m	-5 / -	S55X	- / -	2	Partial capture
10-16 20:23	60m	-19 / -11	GM3CQD	-13 / -	3	✓ Closing observed
10-16 19:42	60m	-8 / -13	YL2SW	+5 / 0	5	✓ Full exchange observed
10-16 19:36	60m	-7 / -	DL9YNG	-12 / -20	4	✓ Closing observed
10-16 19:33	60m	-13 / -2	OH8JP	-7 / +1	5	✓ Full exchange observed
10-16 19:32	60m	- / -	DL9DBF	-8 / -	5	Partial capture
10-16 19:29	60m	-2 / -14	IZ4JMA	-4 / -3	5	✓ Full exchange observed
10-16 19:26	60m	-4 / -15	IN3IZQ	-9 / 0	5	✓ Full exchange observed
10-16 19:23	60m	-6 / -20	F6FEG	-14 / -10	4	✓ Full exchange observed
10-16 19:22	60m	-10 / -	EG46PPA	- / -	2	Partial capture
10-16 19:20	60m	-14 / -	K6VHF/HR9	- / -2	4	Partial capture
10-16 19:17	60m	-13 / -14	ON4DS	0 / +2	5	✓ Full exchange observed
10-13 03:59	80m	- / -18	YO4CPO	+4 / -	3	✓ Closing fragment
10-13 03:45	80m	-20 / -	IZ5FSO	- / -	2	✓ Closing fragment
10-13 03:40	80m	-18 / -	RA6Z	- / -1	3	✓ Closing fragment
10-13 03:35	80m	-16 / -11	CT2GQA	-8 / -	4	✓ Closing observed
10-13 03:32	80m	+1 / -3	F4HKP	-2 / +10	5	✓ Full exchange observed
10-13 03:29	80m	-1 / -	SV2HVX	- / 0	3	Partial capture
10-13 03:27	80m	- / -2	SV2HXV	-8 / -	5	Partial capture
10-13 03:24	80m	-2 / -11	E75FM	+4 / -4	8	✓ Full exchange observed
10-13 03:24	80m	-8 / -13	MM3JFM	-18 / -8	5	✓ Full exchange observed
10-13 03:21	80m	-5 / -3	IK4TVP	+9 / -	4	✓ Full exchange observed
10-13 03:19	80m	-6 / -	SV1EAG	- / -3	3	✓ Closing fragment
10-13 03:14	80m	-10 / -16	R3KLE	-8 / -8	4	✓ Full exchange observed
10-13 03:12	80m	-7 / -	UA3IDQ	- / -17	3	✓ Closing fragment
10-13 03:09	80m	-5 / -2	DL/AD2LX	+2 / -1	2	Partial capture
10-13 03:07	80m	-5 / -3	9A9TT	+10 / +9	7	✓ Full exchange observed
10-10 04:21	80m	-1 / -10	GW4HZA	0 / +7	5	✓ Full exchange observed
10-10 04:17	80m	-1 / -	UA3YPS	- / -	6	Partial capture
10-10 04:12	80m	0 / -	VP2MAA	- / -	7	Partial capture
10-10 04:08	80m	-8 / +5	SP6U	0 / 0	4	Partial capture
10-10 04:06	80m	-11 / -18	RA5AD	0 / +1	3	✓ Full exchange observed
10-10 04:03	80m	-15 / -19	UA3YFL	+5 / +6	7	✓ Full exchange observed
10-10 04:01	80m	-9 / -14	SP4DLD	-1 / +3	5	✓ Full exchange observed
10-10 04:00	80m	-2 / -10	SP9WLC	+20 / +10	4	✓ Full exchange observed
10-10 03:58	80m	0 / -	M6WRB	- / -2	3	✓ Closing fragment
10-10 03:57	80m	-2 / -9	OR5T	+7 / +10	5	✓ Full exchange observed
10-10 03:56	80m	-4 / -7	ES5RY	+3 / +3	3	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
211345  -7 2552  DL4HTK DO9POL -14 (x7)
220045  +0 2289  DO9MKN DL4HTK JO51
040215  -4 1814  CQ DL4HTK JO51 (x3)
040345  -2 1814  PA3GDL DL4HTK -06
040400  -5  892  DL4HTK PA3GDL R-10
040415  -1 1814  PA3GDL DL4HTK RR73
040430  -1  892  DL4HTK PA3GDL 73

60m

UTC    dB Audio  Message
033045  -1  788  DL4HTK EB1LA 73
033100  -9 1447  CQ DL4HTK JO51
033115  -5 1312  DL4HTK F5MXH JN07
033130 -14 1447  F5MXH DL4HTK +09
033145  -5 1312  DL4HTK F5MXH R+03
033200 -15 1447  F5MXH DL4HTK RR73
033215  -5 1312  DL4HTK F5MXH 73
033230 -16 1447  CQ DL4HTK JO51 (x8)

40m

UTC    dB Audio  Message
031445  -4 1934  DL4HTK R5CB -21 (x2)
033830 -16 1648  DL4HTK EH3ST -14
035430  -1  790  DL4HTK LZ1EV RR73
041015  +3  341  DL4HTK RD3FY -11 (x2)
041615 -19 2222  DL4HTK RA6ABO -15 (x2)
042200  +1 2346  DL4HTK RW3YS -12
043145 -15  922  DL4HTK CT3MD -22 (x3)
031145  -3 2398  DL4HTK RZ6L -23 (x2)
033445 -24 1701  DL4HTK RO6K -24

10m

UTC    dB Audio  Message
160800 -19 1403  DL4HTK LZ1JZ RR73
122245 -17 1775  DL4HTK RA9LL -20 (x2)

20m

UTC    dB Audio  Message
103415 -12 1500  OJ0YL DL4HTK R-09 (x8)
104115  -6 1287  DH1HF DL4HTK -06
104200 -15 1288  DL4HTK DH1HF R-13
220515 +13 1629  DL4HTK EA4HPY +00 (x3)
042000 +15  828  DL4HTK LZ1EV +02 (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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee