DF9CY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO54

Receiver-side FT8 activity involving DF9CY, decoded by SO8OO in southeastern Poland. 58 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-29.

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 58 FT8 messages attributed to DF9CY as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -1 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

20m · 58

First attributed message: 2026-08-29
Last attributed message: 2026-08-29 17:15 UTC

Observed FT8 message patterns

Attributed sample: 58 messages
Active dates: 1 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -7 to +6 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 53.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with DF9CY in decoded directed-looking exchanges:

CE2SV · Chile F4FSY · France BA3QIQ · China BD8FOD · China BG8HNC · China BI4JJO · China EA5HND · Spain F4PCM · France F5OYA/P · France M7JVT · England R4FDW · European Russia TA2CAX · Asiatic Turkey

Most frequent locator attributed to DF9CY

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: JO54 · 26 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 892 km (approx.)
Last such locator decoded: 2026-08-29 17:14 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	DF9CY S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-07 17:24	10m	- / -9	CE2SV	0 / -	2	✓ Closing fragment
08-29 17:15	20m	-2 / -	BI4JJO	- / -8	2	✓ Closing fragment
08-29 17:14	20m	- / -	DG5PW	+3 / -	5	Partial capture
08-29 17:10	20m	-9 / -	F4PCM	+1 / -	2	✓ Closing observed
08-29 17:08	20m	-1 / -	VE9GSB	- / -10	3	✓ Closing fragment
08-29 17:01	20m	+6 / -6	F5OYA/P	-2 / -	3	✓ Closing observed
08-29 17:00	20m	+2 / -	UN7PPV	- / -19	2	✓ Closing fragment
08-29 16:59	20m	-4 / -	BD8FOD	- / -12	2	✓ Closing fragment
08-29 16:56	20m	-10 / -	EA5HND	-13 / -	2	✓ Closing observed
08-29 16:37	20m	+7 / -	LZ2VQ	- / -22	4	Partial capture
08-29 16:36	20m	0 / -	BA3QIQ	- / -14	2	✓ Closing fragment
08-29 16:35	20m	+7 / -	R4FDW	- / -11	2	✓ Closing fragment
08-29 16:32	20m	-1 / -	YO5PHL	- / -15	2	✓ Closing fragment
08-29 16:27	20m	-2 / -	M7JVT	- / -8	2	✓ Closing fragment
08-29 16:19	20m	-4 / -	AP2TN	- / -	4	Partial capture
08-27 10:39	10m	- / -15	F4FSY	-6 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
102200 -13 2282  DF9CY EB3JT R-11
103945  -7 1841  DF9CY F4FSY -15 (x2)
172445  +0 2596  DF9CY CE2SV -09 (x2)
090100 -24 1892  DF9CY UN7PTN -13

20m

UTC    dB Audio  Message
170830  -2  647  VE9GSB DF9CY -10 (x2)
170930 -10  647  CQ DF9CY JO54
171030  -9  647  F4PCM DF9CY RR73
171045  +1  647  DF9CY F4PCM 73
171330  +2  647  CQ DF9CY JO54 (x3)
171445 +10  646  DF9CY DG5PW JO30
171500  -2  647  BI4JJO DF9CY -08
171515  +4  646  DF9CY DG5PW JO30
171530  -2  647  BI4JJO DF9CY RR73
171545  +3  646  DF9CY DG5PW JO30 (x3)

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