DL3YDX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO41

Receiver-side FT8 activity involving DL3YDX, decoded by SO8OO in southeastern Poland. 168 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-07.

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 168 FT8 messages attributed to DL3YDX as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (67%), followed by 40 m (33%). Several six-hour UTC windows tied for the largest share (89%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -6 dB.

Overview

168

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

40m · 55 20m · 113

First attributed message: 2026-06-08
Last attributed message: 2026-09-07 15:30 UTC

Observed FT8 message patterns

Attributed sample: 168 messages
Active dates: 7 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -15 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 49, strong (≥ -8 dB) 105.

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 DL3YDX in decoded directed-looking exchanges:

4L7T · Georgia A71XX · Qatar BG7BMG · China E70SZ · Bosnia-Herzegovina F5SFT · France DF0NN · Fed. Rep. of Germany DF6JF · Fed. Rep. of Germany DK6MR · Fed. Rep. of Germany DL1ASL · Fed. Rep. of Germany F5LVR · France F5RMK · France I1WUA · Italy

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 DL3YDX

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: JO41 · 75 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 916 km (approx.)
Last such locator decoded: 2026-09-07 15:27 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	DL3YDX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-07 15:30	40m	- / -	UT0IN	-4 / -	6	Partial capture
09-07 15:27	40m	-4 / -	TK5NJ	- / -7	3	✓ Closing fragment
09-07 15:26	40m	-8 / -	DG6MA	- / -9	2	Partial capture
09-07 15:25	40m	-12 / -	F5LVR	- / -12	2	✓ Closing fragment
09-07 15:24	40m	-12 / -	ON5HE	-1 / +4	3	✓ Full exchange observed
09-07 15:19	40m	-2 / -	SM2OTU	- / -24	7	✓ Closing fragment
09-07 13:49	40m	-14 / -7	IU5HIU	-22 / -17	3	✓ Full exchange observed
09-07 13:47	40m	-14 / -	DL1ASL	-22 / -9	5	✓ Full exchange observed
09-07 13:45	40m	-14 / -8	I1WUA	-20 / -9	4	✓ Full exchange observed
09-07 13:43	40m	-17 / -	OE2CAL	+6 / -	5	✓ Full exchange observed
09-07 13:42	40m	-7 / -	DK6MR	- / +8	2	✓ Closing fragment
09-07 13:40	40m	-2 / -	HB9GXI	- / -	3	Partial capture
09-07 13:37	40m	-6 / -	ON6SAT	-12 / -	3	✓ Closing observed
09-07 13:35	40m	-16 / -	M9XPN	- / -	7	Partial capture
09-07 13:34	40m	-4 / -1	SQ9DJQ	+6 / -	4	✓ Closing observed
09-07 13:32	40m	-11 / -	F5RMK	- / -5	3	✓ Closing fragment
09-07 13:31	40m	0 / -16	SP9IMY	+11 / -24	4	✓ Full exchange observed
09-07 13:30	40m	-6 / -	DF0NN	- / -	2	✓ Closing fragment
09-05 15:23	40m	- / -9	OZ9FF	0 / -	2	✓ Closing fragment
08-17 14:10	20m	-4 / -	8B81JB	- / -	6	Partial capture
07-28 12:20	20m	-11 / -	F5SFT	-8 / -	5	✓ Closing observed
07-28 12:16	20m	-12 / -	<...>	-8 / -	5	Partial capture
07-28 12:14	20m	-16 / +4	F5SFT	-6 / -	5	Partial capture
07-26 16:07	20m	-19 / -	OE3AAS	- / -	3	Partial capture
07-26 16:01	20m	+2 / -6	A71XX	0 / +7	6	✓ Full exchange observed
07-26 15:53	20m	+2 / -	BG2ATH	- / -	10	Partial capture
07-26 15:50	20m	-6 / -	BG7BMG	- / -10	5	Partial capture
07-26 15:48	20m	-10 / -	RW3DDZ	- / -	2	Partial capture
07-26 15:46	20m	-12 / -6	E70SZ	-13 / -10	6	✓ Full exchange observed
07-26 15:43	20m	0 / -	RA6FSV	- / -18	2	Partial capture
07-26 15:39	20m	+4 / -	BG2ATH	- / -	6	Partial capture
07-26 15:37	20m	-7 / -	RC9WC	- / -7	3	Partial capture
07-26 15:34	20m	-4 / -	4L7T	-11 / -	3	✓ Closing observed
07-26 15:34	20m	-3 / -	BA8BLK	- / -21	2	Partial capture
07-26 15:31	20m	-4 / -	R3UCZ	- / -12	4	Partial capture
07-26 15:28	20m	-2 / -	F1PPH	- / -4	2	Partial capture
07-26 15:25	20m	+6 / -	BG2ATH	- / -	4	Partial capture
07-26 15:24	20m	-4 / -	BG7BMG	- / -13	2	✓ Closing fragment
07-26 15:21	20m	+3 / -	BG2ATH	- / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
152445 -15 1680  ON5HE DL3YDX RR73
152515 -13 1680  F5LVR DL3YDX -12 (x2)
152615  -6 1680  DG6MA DL3YDX -09 (x2)
152745  -8 2192  TK5NJ DL3YDX JO41 (x3)
153030  -5 1538  DL3YDX UT0IN KO50
153045  -2 2192  DF6JF DL3YDX 73
153100  -3 1538  DL3YDX UT0IN KO50 (x5)

20m

UTC    dB Audio  Message
121900  -7 3072  DL3YDX <...> +12 (x3)
122045  -7 3073  F5SFT DL3YDX RRR
122100  -7 3072  DL3YDX F5SFT +12
122115  -6 3073  F5SFT DL3YDX RRR
122200 -10 3072  DL3YDX F5SFT +12
122215 -19 1272  F5SFT DL3YDX 73
132845 -12 1942  8B81JB DL3YDX (x7)

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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