DL5YSD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO42

Receiver-side FT8 activity involving DL5YSD, decoded by SO8OO in southeastern Poland. 234 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-06 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 234 FT8 messages attributed to DL5YSD as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (70%), followed by 10 m (23%) and 20 m (8%). Several six-hour UTC windows tied for the largest share (74%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

234

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

40m · 163 20m · 18 10m · 53

First attributed message: 2026-06-06
Last attributed message: 2026-09-19 23:10 UTC

Observed FT8 message patterns

Attributed sample: 234 messages
Active dates: 12 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -20 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 82, moderate (-15 to -9 dB) 89, strong (≥ -8 dB) 63.

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 DL5YSD in decoded directed-looking exchanges:

M7CWF · England ×3 EA3DYI · Spain G1OZO · England IQ4JO · Italy LZ1LZ · Bulgaria LZ2INP · Bulgaria RC5F · European Russia SP9MQS · Poland UX2SB · Ukraine F1ODM · France G4DBW · England RN6MA · European Russia

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 DL5YSD

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: JO42 · 121 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 934 km (approx.)
Last such locator decoded: 2026-09-19 23:10 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	DL5YSD S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 23:09	40m	-5 / +3	IU5HIU	-2 / +1	4	✓ Full exchange observed
09-19 23:08	40m	-5 / -	TN8GD	- / -	2	Partial capture
09-19 21:22	40m	-9 / -	HZ1TT	- / -	3	Partial capture
09-19 21:19	40m	-7 / -	R3UDU	-14 / -4	3	Partial capture
09-19 21:19	40m	-6 / -	F6BHK	-4 / +1	4	Partial capture
09-19 21:15	40m	0 / -6	EH3ST	-18 / -3	5	✓ Full exchange observed
09-19 21:09	40m	-8 / -16	RU5A	-6 / +7	4	✓ Full exchange observed
09-19 21:06	40m	-6 / -	MW7RHR	- / +1	2	✓ Closing fragment
09-19 21:03	40m	-6 / -	BG7BVP	- / -	2	Partial capture
09-19 21:02	40m	-9 / -	M7CWF	- / +1	2	✓ Closing fragment
09-07 20:53	40m	-10 / -16	EA7UW	-14 / -6	7	✓ Full exchange observed
09-07 20:53	40m	-6 / -	OZ1PFH	-2 / -6	10	Partial capture
09-07 20:47	40m	- / -13	DJ7XY	-14 / -	2	✓ Closing fragment
09-07 20:44	40m	-9 / +3	DL7ARV	+3 / +8	4	✓ Full exchange observed
09-07 20:40	40m	-9 / -	DL9DAJ	-10 / -2	2	✓ Closing observed
09-07 20:39	40m	-10 / -6	M7CWF	-12 / -3	4	✓ Full exchange observed
09-07 20:37	40m	-6 / -	IZ8PPI	- / -16	2	✓ Closing fragment
09-07 20:35	40m	-11 / -2	IU4DTV	-10 / 0	4	✓ Full exchange observed
09-07 20:32	40m	-10 / -8	DL3IAK	-4 / -8	7	✓ Full exchange observed
09-06 22:17	40m	-9 / -	JY5IB	- / -	2	Partial capture
09-06 22:13	40m	-12 / -17	RA6OY	+2 / +3	8	✓ Full exchange observed
09-06 22:12	40m	-16 / -24	DL1UDO	-7 / -9	5	✓ Full exchange observed
09-06 22:10	40m	-8 / -	M0PFX	- / -12	2	✓ Closing fragment
09-06 22:05	40m	-18 / -	SP9DPI	- / -4	2	✓ Closing fragment
09-06 22:01	40m	-10 / -12	SP5EXA	-1 / -	4	✓ Full exchange observed
09-06 22:01	40m	-15 / -6	F1PBZ	+6 / -11	4	Partial capture
09-06 22:00	40m	-8 / -	YO2MKE	- / +1	2	✓ Closing fragment
08-15 21:01	40m	-23 / -8	G1ZHD	-14 / -	3	✓ Closing observed
08-15 19:47	20m	- / -17	RN6MA	+3 / -	2	✓ Closing fragment
08-13 20:15	40m	- / -17	IK3VVC	-15 / -	4	✓ Closing fragment
08-13 20:14	40m	-21 / -7	DK0KG	-14 / -3	7	Partial capture
08-13 20:12	40m	-21 / -	IU2HUQ	-15 / -4	2	✓ Closing observed
08-12 20:28	20m	- / -	F5IXN	-16 / -	4	Partial capture
08-11 20:25	20m	- / -15	G4DBW	-7 / -	3	✓ Closing fragment
07-25 22:49	20m	- / -14	CT1BFP	-15 / -	2	Partial capture
07-13 14:39	10m	-16 / -	SP8PT	- / -	2	Partial capture
07-13 14:35	10m	-18 / -	LZ2INP	- / -2	2	✓ Closing fragment
07-13 14:31	10m	-15 / -	G1OZO	- / +2	6	✓ Closing fragment
07-13 14:29	10m	-16 / -	EW8DU	- / +5	2	Partial capture
07-13 14:24	10m	-18 / -	SP9MQS	- / -	2	✓ Closing fragment
07-13 14:22	10m	-19 / -	UX2SB	- / -	3	✓ Closing fragment
07-13 14:14	10m	-12 / -	DL5YDD	+4 / -	3	Partial capture
07-13 14:02	10m	-14 / -	RC5F	- / +4	4	✓ Closing fragment
07-13 13:57	10m	-13 / -	EB5R	- / -12	5	Partial capture
07-13 13:56	10m	-11 / -	EA3DYI	- / +2	3	✓ Closing fragment
07-13 13:54	10m	-11 / -	LZ1LZ	- / -9	2	✓ Closing fragment
07-13 13:52	10m	-14 / -	IQ4JO	- / -	2	✓ Closing fragment
07-12 20:47	20m	- / -22	EW3DK	-19 / -	4	Partial capture
07-12 20:45	20m	- / -15	US5HL	-4 / -	2	✓ Closing fragment
07-09 22:53	40m	- / -7	S56KO	-10 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
212015  -7 2429  R3UDU DL5YSD -04 (x2)
212115  -7 2429  CQ DL5YSD JO42 (x2)
212215  -9 2430  HZ1TT DL5YSD JO42 (x3)
212345 -10 2430  CQ DL5YSD JO42 (x2)
230845  -3 1986  TN8GD DL5YSD JO42
230900  +0  772  DL5YSD IU5HIU JN53
230915  -5 1985  IU5HIU DL5YSD +01
230930  -2  772  DL5YSD IU5HIU R+03 (x2)
231015  -7 1986  TN8GD DL5YSD JO42

20m

UTC    dB Audio  Message
202615  -8 2325  DL5YSD G4DBW R-15 (x2)
202745  -7 1582  DL5YSD F1ODM RR73
202100 -16 1844  CQ DL5YSD JO42                        a1 (x3)
202815 -17 1841  DL5YSD F5IXN JN23 (x4)
203200 -18 1841  CQ DL5YSD JO42
203500 -20 1840  SM6VAG DL5YSD JO42
194100 -19 2282  CQ DL5YSD JO42
194730  +4 2281  DL5YSD RN6MA -17 (x2)

10m

UTC    dB Audio  Message
142915 -16 2006  EW8DU DL5YSD +05 (x2)
143045 -18 2007  CQ DL5YSD JO42 (x2)
143145 -18 2006  G1OZO DL5YSD JO42 (x6)
143545 -15 2006  LZ2INP DL5YSD R-02 (x2)
143700 -20 2005  EA5QS DL5YSD JO42
143900 -16 2005  SP8PT DL5YSD R+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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