DL1UDO — 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: JO31

Receiver-side FT8 activity involving DL1UDO, decoded by SO8OO in southeastern Poland. 43,340 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 150 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-05.

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 43,340 FT8 messages attributed to DL1UDO as the transmitting token by decoded message structure across 150 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (33%), followed by 20 m (28%) and 60 m (22%). The busiest six-hour window was 18:00-00:00 UTC, containing 39% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

43,340

Messages attributed

150

UTC dates decoded

5,021

Active 15-min windows

-7 dB

Estimated median S/N

Bands

160m · 5 80m · 14,355 60m · 9,544 40m · 6,679 20m · 12,335 10m · 422

First attributed message: 2026-06-06
Last attributed message: 2026-11-05 07:00 UTC

Observed FT8 message patterns

Attributed sample: 43,340 messages
Active dates: 150 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -18 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7,142, moderate (-15 to -9 dB) 11,202, strong (≥ -8 dB) 24,996.

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 DL1UDO in decoded directed-looking exchanges:

ON4MAP · Belgium ×19 ON1BH · Belgium ×16 CT2GQA · Portugal ×14 M8FQT · England ×11 M7GOA · England ×7 KZ8C · United States ×6 IK4LZH · Italy ×5 TA3NK · Asiatic Turkey ×5 SP2SGZ · Poland ×5 M9XPN · England ×5 9A3EYA · Croatia ×4 DC9GT · Fed. Rep. of Germany ×4

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 DL1UDO

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: JO31 · 33,926 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-11-05 06:59 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	DL1UDO S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 06:59	60m	-6 / -	LZ911TD	- / +10	2	Partial capture
11-05 06:37	80m	-18 / +3	OE5PEN	-4 / -17	5	✓ Full exchange observed
11-05 06:34	80m	-13 / -	DK5UR	-6 / +1	4	✓ Full exchange observed
11-05 06:14	80m	-6 / -	F4HSB	- / -	3	Partial capture
11-05 06:12	80m	-1 / -	IW4EGX	- / -	3	Partial capture
11-05 05:50	80m	+2 / -	EA5IGO	- / -6	2	Partial capture
11-05 05:41	60m	-9 / -	DG0OBU	- / -	3	Partial capture
11-05 05:24	80m	+5 / -25	WB2AA	-19 / -13	5	✓ Full exchange observed
11-05 05:21	80m	0 / -	OH6FSG	- / -	3	Partial capture
11-04 20:31	40m	- / -7	IT9JKS	-16 / -	2	✓ Closing fragment
11-04 19:24	40m	- / -11	DF0TZ	-10 / -	2	✓ Closing fragment
11-04 19:22	40m	-4 / -	YL3AUL	- / -7	2	Partial capture
11-04 19:16	40m	-1 / -13	DB2GM	0 / -	4	✓ Closing observed
11-03 20:38	80m	-14 / -	DD8BA	- / -	2	Partial capture
11-03 20:37	80m	-8 / -	OE5GQQ	- / -	2	Partial capture
11-03 20:34	80m	-11 / -	DF9HT	- / -	4	Partial capture
11-03 20:33	80m	-6 / -	SP5JMA	- / -15	2	✓ Closing fragment
11-03 20:14	80m	-3 / -12	SQ8EKG	-8 / -15	4	✓ Full exchange observed
11-03 19:51	80m	-14 / -	YT2FA	- / -	3	Partial capture
11-03 19:48	80m	-11 / 0	SP3SLA	+4 / +7	8	✓ Full exchange observed
11-03 19:46	80m	-10 / -	SV1RK	- / -	2	Partial capture
11-03 19:37	60m	-16 / -	IS0IIG	- / -	2	Partial capture
11-03 19:34	60m	-14 / -	OE2CAL	- / -	3	Partial capture
11-03 19:33	60m	-13 / -7	IW2HWN	-19 / -12	3	✓ Full exchange observed
11-03 19:15	80m	-4 / -	TA7MMI	- / -	2	Partial capture
11-03 19:10	80m	-1 / -5	LA2JKA	-2 / +2	5	✓ Full exchange observed
11-03 19:08	80m	-3 / -	DD7HZ	- / -10	3	✓ Closing fragment
11-03 19:06	80m	-3 / -	PI40EUDXF	- / -16	4	Partial capture
11-03 18:59	60m	-3 / +2	OE2LDM	+3 / +4	7	✓ Full exchange observed
11-03 18:56	60m	-7 / -	EA2AUK	- / -14	2	✓ Closing fragment
11-03 18:53	60m	-5 / -15	SV2CWV	-8 / -18	5	✓ Full exchange observed
11-03 18:33	80m	-7 / -	M3THN	- / -17	4	✓ Closing fragment
11-03 18:28	80m	-10 / -	DF0CHE	-7 / -7	3	✓ Closing observed
11-03 18:26	80m	-10 / -	F4MUM	-8 / +9	4	✓ Full exchange observed
11-03 18:25	80m	-9 / -	M9XDT	-24 / -5	4	✓ Closing observed
11-03 18:23	80m	-4 / -	ON7ER	- / -3	3	✓ Closing fragment
11-03 18:21	80m	-8 / -	OG5O	- / -	4	Partial capture
11-03 18:19	80m	-8 / -	G4SPE	- / -14	3	✓ Closing fragment
11-03 18:16	80m	-12 / -13	IK1MJK	-3 / -	4	✓ Closing observed
11-03 18:14	80m	- / -	DO1WFW	-14 / -	6	Partial capture
11-02 18:15	60m	-3 / -	F5OYA/P	- / -14	4	Partial capture
11-02 18:13	60m	-6 / -4	IZ3XAN	-21 / -20	4	✓ Full exchange observed
11-02 18:08	60m	-6 / -	SP8BG	- / -12	6	✓ Closing fragment
11-02 18:03	60m	-10 / -13	DC8SG	-3 / -17	5	✓ Full exchange observed
11-02 06:39	80m	-10 / -	SM5VSS	- / -11	4	✓ Closing fragment
11-02 06:36	80m	-12 / +10	ON4MAP	-22 / -4	3	✓ Full exchange observed
11-02 06:33	60m	-9 / -	EA3ACQ	- / -	4	Partial capture
11-02 06:29	60m	- / -6	LZ911TD	-16 / -	3	Partial capture
11-02 06:29	60m	-13 / -	GB1POPPY	- / -16	4	Partial capture
11-01 19:16	80m	-9 / -	IZ5IMD	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
054215  -8 1380  DG0OBU DL1UDO JO31 (x2)
060345 -10 1529  CQ DL1UDO JO31 (x10)
065945  -6 1529  LZ911TD DL1UDO JO31
070000  -4  342  DL1UDO PI40EUDXF +07
070015  -5 1530  LZ911TD DL1UDO R+10

80m

UTC    dB Audio  Message
063315 -11 1251  CQ DL1UDO JO31 (x2)
063400  -8 2596  DL1UDO DK5UR +16
063415 -14 1250  DK5UR DL1UDO R+01
063430  -4 2596  DL1UDO DK5UR RR73
063445 -12 1250  DK5UR DL1UDO 73
063515 -10 1250  CQ DL1UDO JO31 (x4)
063700  +0 1251  DL1UDO OE5PEN JN78
063715 -18 1250  OE5PEN DL1UDO -17
063730  -5 1251  DL1UDO OE5PEN R+03
063745 -17 1250  OE5PEN DL1UDO RR73
063800  -6 1251  DL1UDO OE5PEN 73

40m

UTC    dB Audio  Message
191745  -2  743  CQ DL1UDO JO31 (x2)
192045  +2  743  CT7BLY DL1UDO JO31
192215  -6  743  YL3AUL DL1UDO JO31 (x2)
192400  -7 1481  DL1UDO DF0TZ -11 (x2)
192630 -14 2592  DL1UDO IK2IWT -11
193015 -15 1123  CQ DL1UDO JO31
194345 -19 1103  OE3RWR DL1UDO -02
200800 -17 2121  DL1UDO SV2TQT RR73
202845 -11  773  CQ DL1UDO JO31
203130 -19 2346  DL1UDO IT9JKS -07 (x2)
203845 -15  773  G1VWC DL1UDO 73

160m

UTC    dB Audio  Message
223015 -19 1215  DL1UDO DG5PW JO30 (x2)
182830 -19 1302  DL1UDO DL8GAM JO42 (x2)
182915 -17 1500  CQ DL1UDO JO31 (x3)
183315 -20 1500  YL3CW DL1UDO JO31 (x2)
183830  +7 2142  DL1UDO YL3CW -09 (x2)

10m

UTC    dB Audio  Message
073815 -19 1127  HA3MN DL1UDO 73
074045 -19 1127  YT9WW DL1UDO JO31
074215 -24 1126  F6IRG DL1UDO JO31
075345  -7 1181  DL1UDO IZ3NVR +09 (x2)
080645 -20 1126  UR5WDE DL1UDO JO31
080930 -18 1126  DK8ZZ DL1UDO JO31
104700 -24 1434  DL1UDO IU4PPL +04
112530 -11 2691  DL1UDO R9CS MO06 (x4)
132930 -21 2104  DL1UDO ZS6NL -10 (x2)
101415 -16 1292  DL1UDO FR5ZE RR73

20m

UTC    dB Audio  Message
115415  +6 1032  DG5RC DL1UDO 73
123245  -3 1852  CQ DL1UDO JO31 (x2)
133415  -9 1502  TA1RAW DL1UDO JO31
133700 -18 1362  DL1UDO LZ3HI RR73
133845  -6 1502  CR7CBH DL1UDO JO31 (x3)
142515 -11  602  DL1UDO EA3JFE RR73
151000  -8 1563  IZ7KYS DL1UDO RR73
165000  -4 1563  CQ DL1UDO JO31 (x5)

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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