DL1YFS — 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 DL1YFS, decoded by SO8OO in southeastern Poland. 1,287 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 74 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-15.

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 1,287 FT8 messages attributed to DL1YFS as the transmitting token by decoded message structure across 74 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (50%), followed by 20 m (24%) and 80 m (12%). Most decodes (53%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12.1 dB.

Overview

1,287

Messages attributed

UTC dates decoded

324

Active 15-min windows

-12.1 dB

Estimated median S/N

Bands

80m · 156 60m · 154 40m · 645 20m · 315 10m · 17

First attributed message: 2026-06-06
Last attributed message: 2026-09-15 18:38 UTC

Observed FT8 message patterns

Attributed sample: 1,287 messages
Active dates: 74 UTC dates
Estimated median S/N: -12.1 dB
Estimated 10th-90th percentile: -20.9 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 459, moderate (-15 to -9 dB) 455, strong (≥ -8 dB) 373.

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 DL1YFS in decoded directed-looking exchanges:

DK5UR · Fed. Rep. of Germany ×9 DL9CE · Fed. Rep. of Germany ×3 F1LPT/P · France ×3 IQ3UCY · Italy ×2 DL9KM · Fed. Rep. of Germany ×2 G4NKV/P · England ×2 SP9MRP · Poland ×2 SP2OSA · Poland ×2 SQ3TR · Poland ×2 9A4ZM · Croatia CN2DX · Morocco OZ9WRH · Denmark

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 DL1YFS

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 · 771 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 916 km (approx.)
Last such locator decoded: 2026-09-15 18:36 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	DL1YFS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 18:35	40m	-6 / -	SQ9SZ	- / -6	5	Partial capture
09-15 18:26	40m	-12 / -	OH2HOR	- / -	2	✓ Closing fragment
09-15 17:16	40m	-10 / -	G4FAL	- / -	2	✓ Closing fragment
09-15 17:11	40m	- / -4	9A3MRN	-1 / -	2	✓ Closing fragment
09-15 17:07	40m	-9 / -	F4NEM/P	- / -5	4	Partial capture
09-15 17:06	40m	-12 / -	5Q1X	- / +10	3	✓ Closing fragment
09-15 17:04	40m	-12 / -	G4NKV/P	- / -	2	✓ Closing fragment
09-13 16:58	40m	-8 / -	DF3GL	- / -	6	Partial capture
09-13 16:52	40m	-8 / -	DF3GL	- / -	5	Partial capture
09-13 16:50	40m	-6 / -	DL6GD	-13 / -	3	✓ Closing observed
09-13 15:47	40m	-9 / -8	LB6NK	-4 / -	4	✓ Full exchange observed
09-13 15:45	40m	-8 / -1	DJ3QK	-2 / -	5	✓ Full exchange observed
09-13 15:19	40m	-11 / -	DG4MDO	-5 / -4	4	✓ Closing observed
09-13 14:19	40m	-18 / +10	OZ1GC	-18 / -	5	✓ Full exchange observed
09-13 14:14	40m	-17 / +2	SA7CHI	-12 / -	5	✓ Closing observed
09-13 10:43	40m	- / +3	DG5YHK	-22 / -	2	Partial capture
09-13 08:59	40m	- / -6	DL0DM	-4 / -	2	✓ Closing fragment
09-13 07:05	60m	-19 / +10	DL2VN	-12 / -	7	✓ Full exchange observed
09-13 07:04	60m	-18 / -	F4MXT	- / +3	4	✓ Closing fragment
09-13 07:00	60m	-18 / -	GE7RTI	- / 0	2	✓ Closing fragment
09-13 06:58	60m	-16 / -	OH0KCE	- / -	3	✓ Closing fragment
09-13 06:56	60m	-18 / -	DL7ARV	-3 / -	5	✓ Full exchange observed
09-13 06:54	60m	-16 / -1	SP2OSA	-16 / +1	5	✓ Full exchange observed
09-12 21:19	60m	-1 / -3	SQ3TR	-2 / +9	5	✓ Full exchange observed
09-12 21:14	60m	-6 / -	TF8KW	- / +6	5	✓ Closing fragment
09-12 20:55	60m	-5 / -	SP3SXS	-14 / +10	7	Partial capture
09-12 20:52	60m	-7 / -7	7X5CY	-5 / +5	7	✓ Full exchange observed
09-12 19:55	40m	-12 / -	DF3QT	- / -	2	Partial capture
09-12 19:52	40m	-11 / -	DF3QT	- / -	2	Partial capture
09-12 19:48	40m	-12 / -	SP7CAC	- / -	5	Partial capture
09-12 19:44	40m	-8 / -	GB1HTC	-11 / -	7	✓ Closing observed
09-12 19:43	40m	-9 / -	G0WTZ	- / -	2	Partial capture
09-12 18:26	40m	0 / -	OZ/DF4ZL	- / -	3	Partial capture
09-12 17:41	40m	+2 / -	G4NKV/P	- / -	6	Partial capture
09-12 17:07	40m	-10 / -	DM8ITZ	- / -	9	Partial capture
09-12 16:57	40m	-12 / -	II6IALU	- / -	2	Partial capture
09-12 15:45	40m	-12 / -	SP9DPM/P	- / -9	5	✓ Closing fragment
09-12 15:37	40m	-7 / -4	DK5AN/P	-15 / -	6	Partial capture
09-12 11:12	40m	- / -	DK5UR	-10 / -	2	✓ Closing fragment
09-12 11:01	40m	- / -22	DA1MN	-18 / -	6	✓ Closing fragment
09-12 10:58	40m	- / -6	DJ4RAM	-8 / -	2	✓ Closing fragment
09-12 10:46	40m	- / 0	DD7EE	-18 / -	3	✓ Closing fragment
09-12 10:39	40m	- / -16	DL0HAM	+6 / -	2	✓ Closing fragment
09-12 07:14	40m	-13 / -	HB9ITZ	- / -	9	Partial capture
09-12 06:50	40m	-3 / -	J38LD	- / -	4	Partial capture
09-11 18:07	40m	- / -12	II7IAME	-1 / -	2	Partial capture
09-11 18:07	40m	-9 / -	HF100PKP	- / +7	5	Partial capture
09-10 18:48	80m	-7 / -	DK2MAX	- / -3	3	✓ Closing fragment
09-10 18:45	80m	- / -4	DA6OOM	-18 / -	2	✓ Closing fragment
09-10 18:18	80m	-11 / -	DG5AR	- / +1	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
170800 -10 1962  F4NEM/P DL1YFS -05 (x3)
171130  -4 1913  DL1YFS 9A3MRN -04 (x2)
171630 -10 2062  G4FAL DL1YFS JO41 (x2)
181945 -13 2062  DH1DA DL1YFS JO41
182600  -9 2062  OH2HOR DL1YFS JO41 (x2)
183500  -6 1085  SQ9SZ DL1YFS JO41 (x5)

60m

UTC    dB Audio  Message
070200 -23 1310  CQ DL1YFS JO41                        a1 (x4)
070430 -19 1310  F4MXT DL1YFS JO41
070515 -13  842  DL1YFS DL2VN JO51
070530 -19 1310  F4MXT DL1YFS R+03 (x2)
070615 -12  842  DL1YFS DL2VN JO51
070630 -18 1310  F4MXT DL1YFS 73
070645 -14  842  DL1YFS DL2VN JO51
070700 -18 1310  DL2VN DL1YFS +13
070715  -7  842  DL1YFS DL2VN R+10
070730 -20 1310  DL2VN DL1YFS RR73
070745 -13  842  DL1YFS DL2VN 73

80m

UTC    dB Audio  Message
181345  -4 1742  Z62NS DL1YFS JO41
181515  -8 1742  SO100PKP DL1YFS JO41 (x4)
181815 -16 1741  DG5AR DL1YFS JO41 (x3)
183945  +7 1071  DL1YFS 3Z0SYBIR -08
184400  +4 1742  RX1AB DL1YFS RR73
184515 -19 1454  DL1YFS DA6OOM -04 (x2)
184845  -6 1742  DK2MAX DL1YFS JO41 (x3)

20m

UTC    dB Audio  Message
190915 -10 1727  EA2WX/P DL1YFS JO41 (x2)
191000  -9 2521  DL1YFS EA2WX/P +05
191015 -10 1726  EA2WX/P DL1YFS R+00
191030  -5 2521  DL1YFS EA2WX/P RR73
195815 -17 1415  DL1YFS HZ1KS -07
203815  -6 1727  7Z1BQ DL1YFS JO41 (x5)
204445 -12 1727  TJ1GD DL1YFS JO41
204500  -3  517  DL1YFS TJ1GD -06
204515  -7 1727  TJ1GD DL1YFS R-05
204530 -10  517  DL1YFS RR73; W5UQ <TJ1GD> -04

10m

UTC    dB Audio  Message
194115 -21 1687  PR2CC DL1YFS RR73
202600 -23 1690  PY4AW DL1YFS R+02
203330 -12 1794  DL1YFS CN2DX -04 (x6)
153130  -9 2326  DL1YFS OZ9WRH +02 (x2)
153215 -23 1524  OZ9WRH DL1YFS 73
153800 -13 1519  DL1YFS 9A4ZM 73
161600 -16 1522  F4LZK DL1YFS R+14

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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