DL8SXB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO53

Receiver-side FT8 activity involving DL8SXB, decoded by SO8OO in southeastern Poland. 231 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-02.

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 231 FT8 messages attributed to DL8SXB as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (60%), followed by 20 m (19%) and 80 m (16%). Most decodes (68%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (74%); the estimated median was -18 dB.

Overview

231

Messages attributed

UTC dates decoded

Active 15-min windows

-18 dB

Estimated median S/N

Bands

80m · 38 60m · 10 40m · 139 20m · 44

First attributed message: 2026-06-07
Last attributed message: 2026-08-02 04:30 UTC

Observed FT8 message patterns

Attributed sample: 231 messages
Active dates: 21 UTC dates
Estimated median S/N: -18 dB
Estimated 10th-90th percentile: -24 to -13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 172, moderate (-15 to -9 dB) 56, strong (≥ -8 dB) 3.

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 DL8SXB in decoded directed-looking exchanges:

DN9OPA · Fed. Rep. of Germany EB3JT · Spain IK2DDR · Italy ON7HM · Belgium DH0GBC · Fed. Rep. of Germany F5SZY · France LZ3CB · Bulgaria OD5KU · Lebanon PD0HLA · Netherlands RX6AOB · European Russia TM8WWA · France UT7UJ · Ukraine

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 DL8SXB

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: JO53 · 119 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 841 km (approx.)
Last such locator decoded: 2026-08-02 04:25 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	DL8SXB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-05 13:12	20m	- / -8	F5SZY	-2 / -	2	✓ Closing fragment
08-02 05:00	20m	- / -16	OD5KU	0 / -	2	✓ Closing fragment
08-02 04:33	60m	- / -11	SP4NKJ	+1 / -	3	✓ Closing fragment
08-02 04:27	60m	- / -13	DB3ZY	-2 / -	4	✓ Closing fragment
08-02 04:25	60m	-23 / 0	SM7NDX	-4 / -	4	✓ Closing observed
07-27 19:31	40m	- / -11	SP9NSQ	-12 / -	2	✓ Closing fragment
07-21 19:58	80m	- / -17	SM5FUG	+4 / -	2	✓ Closing fragment
07-21 19:47	80m	-24 / -19	OZ4SOP	+3 / -	4	✓ Closing observed
07-20 19:38	20m	- / -16	F1PBZ	+12 / -	2	Partial capture
07-20 19:30	20m	- / -17	4X1UF	-12 / -	9	Partial capture
07-20 19:26	20m	- / -17	4X1UF	-12 / -	4	Partial capture
07-19 23:31	40m	- / -9	TF8SM	-8 / -	3	✓ Closing fragment
07-19 23:13	40m	-20 / -	2D0OMN	- / -6	2	Partial capture
07-19 22:58	40m	-24 / -11	OH3N	-8 / -	4	✓ Full exchange observed
07-19 22:50	40m	- / -20	PD0IFI	-5 / -	3	✓ Closing fragment
07-19 22:41	40m	- / -	PG7R	-20 / -	3	✓ Closing fragment
07-19 22:33	40m	- / -1	DK7UY	-14 / -	3	✓ Closing fragment
07-19 22:15	40m	- / -21	<...>	-13 / -	2	Partial capture
07-19 22:06	40m	- / -	PA2KV	-16 / -	2	✓ Closing fragment
07-19 22:02	40m	- / -16	F5HNQ	-10 / -	3	Partial capture
07-18 10:58	10m	- / -15	EB3JT	-8 / -	2	✓ Closing fragment
07-17 20:41	40m	- / -11	UT6HN	+1 / -	2	✓ Closing fragment
07-17 20:32	40m	-18 / -	RW3DDZ	- / -	2	Partial capture
07-17 11:11	20m	- / -23	UT7UJ	+8 / -	2	✓ Closing fragment
07-16 13:56	20m	- / -16	LZ3CB	+8 / -	4	✓ Closing fragment
07-15 20:18	80m	- / -	PA1PXL	-10 / -	2	Partial capture
07-09 19:36	40m	-16 / -	9K2YM	- / -1	6	Partial capture
07-09 19:09	80m	- / -16	OM0ACA	-7 / -	2	✓ Closing fragment
07-08 20:38	40m	- / -	DG5BCR	-16 / -	3	Partial capture
07-08 20:24	40m	-16 / -18	PD1WMD	-8 / +3	4	✓ Full exchange observed
07-08 20:04	40m	-18 / -	OE8PIT	-5 / -6	10	Partial capture
07-08 19:31	40m	-21 / -14	HB9CCM	-10 / -	8	✓ Closing observed
07-04 22:44	80m	-16 / -22	OH5WWA	+6 / +7	7	✓ Full exchange observed
07-04 22:37	80m	-21 / -25	SK3WWA	+4 / +3	3	✓ Full exchange observed
07-04 18:25	40m	- / -	E70SZ	-13 / -	5	Partial capture
07-03 23:13	80m	-20 / -	TN8GD	- / -	4	Partial capture
07-03 23:12	80m	-22 / -	MM0HVU	- / -	2	Partial capture
07-03 22:58	80m	-24 / -20	ES1REV	-7 / +2	3	Partial capture
07-03 22:51	40m	-24 / -	<...>	- / -	2	Partial capture
07-03 21:48	40m	- / -	RN2F	-15 / -	4	✓ Closing fragment
07-02 19:00	40m	- / -1	SP6OWA	-14 / -	3	✓ Closing fragment
07-02 18:35	40m	- / +2	DL7UST	-8 / -	4	✓ Closing fragment
07-02 14:56	40m	- / -1	OK6AB	-18 / -	2	✓ Closing fragment
07-02 14:55	40m	- / -18	HF5A	-2 / -	2	✓ Closing fragment
07-02 12:59	40m	- / -	DL6CNG	-6 / -	3	✓ Closing fragment
06-30 18:40	20m	- / -11	TM8WWA	-8 / -	2	✓ Closing fragment
06-29 13:35	10m	- / -	ON7HM	-5 / -	2	✓ Closing fragment
06-29 10:29	20m	- / -	DL1R	-12 / -	6	Partial capture
06-29 09:08	10m	- / -	IK2DDR	-9 / -	2	✓ Closing fragment
06-29 08:56	10m	- / -11	DN9OPA	+5 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
193145 -10  257  DL8SXB 4X1UF R-17 (x7)
193815 +12 2829  DL8SXB F1PBZ -16 (x2)
193845 -11 1593  DL8SXB DH0GBC -13 (x2)
050045  +0 2465  DL8SXB OD5KU R-16 (x2)
131230  +1 1523  DL8SXB F5SZY R-08 (x2)

60m

UTC    dB Audio  Message
042400 -21 1445  LB8VE DL8SXB -15
042530 -22 1445  SM7NDX DL8SXB JO53
042645  -2 2132  DL8SXB SM7NDX R+00
042700 -24 1445  SM7NDX DL8SXB RR73
042715  -6 2133  DL8SXB SM7NDX 73
042745  -2 1231  DL8SXB DB3ZY JO40
042800 -22 1445  OE5WRO DL8SXB -09
042815  -3 1231  DL8SXB DB3ZY JO40 (x3)
043030 -23 1445  W4CHA DL8SXB -14
043345  +2 1480  DL8SXB SP4NKJ R-11 (x3)

40m

UTC    dB Audio  Message
225815 -24 1595  OH3N DL8SXB +14
225830  -9  828  DL8SXB OH3N R-11 (x2)
230445 -23 1595  2D0OMN DL8SXB -04 (x3)
231745 -24 1596  CQ DL8SXB JO53                        a1
233130  -7  391  DL8SXB TF8SM R-09 (x3)
233830 -24 1595  F4MTT DL8SXB RR73
235030 -22 1595  VO1IV DL8SXB -12
193130 -15 1527  DL8SXB SP9NSQ -11 (x3)

80m

UTC    dB Audio  Message
224715 -19 1427  OH5WWA DL8SXB RR73
190445 -20 1180  SV1BLD DL8SXB -04
190900  -8 1866  DL8SXB OM0ACA -16 (x2)
201800 -12 1396  DL8SXB PA1PXL JO21 (x2)
202530  +1 1332  DL8SXB <...> -17
181930  -8 1019  DL8SXB SM7/DL1JAT -13
194715 -24 1451  OZ4SOP DL8SXB JO53
194830  +4 1021  DL8SXB OZ4SOP -19 (x3)
195845  +2 2241  DL8SXB SM5FUG R-17 (x2)
200345 -22 1452  IQ0AK DL8SXB -09

10m

UTC    dB Audio  Message
085645  +3 2388  DL8SXB DN9OPA -11 (x2)
090830 -10 1444  DL8SXB IK2DDR +13 (x2)
092100 -10  364  DL8SXB F6FHZ -10
092330  -2  429  DL8SXB CR2WWA +05
133545  -6 1577  DL8SXB ON7HM +12 (x2)
140300  -6 2570  DL8SXB PD0HLA -16
105815  -5 2716  DL8SXB EB3JT -15 (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.

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