DL9SFE — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN48

Receiver-side FT8 activity involving DL9SFE, decoded by SO8OO in southeastern Poland. 120 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-24 and 2026-10-02.

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 120 FT8 messages attributed to DL9SFE as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (96%), followed by 20 m (4%). Several six-hour UTC windows tied for the largest share (88%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (86%); the estimated median was -19 dB.

Overview

120
Messages attributed
3
UTC dates decoded
12
Active 15-min windows
-19 dB
Estimated median S/N

Bands

40m · 115 20m · 5
First attributed message: 2026-08-24
Last attributed message: 2026-10-02 12:20 UTC

Observed FT8 message patterns

Attributed sample
120 messages
Active dates
3 UTC dates
Estimated median S/N
-19 dB
Estimated 10th-90th percentile
-22 to -11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 103, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 12.

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 DL9SFE in decoded directed-looking exchanges:

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 DL9SFE

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
JN48 · 64 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
941 km (approx.)
Last such locator decoded
2026-10-02 12:09 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 UTCBandDL9SFE S/NCounterpartCounterpart S/NMsgsCapture
10-02 12:19 40m -17 / - SM7HZK - / - 3 ✓ Closing fragment
10-02 12:05 40m -20 / - M1DBB - / -2 2 Partial capture
10-02 12:01 40m - / - DD7FC -10 / - 3 Partial capture
10-02 12:01 40m -20 / - M1DBB - / -2 2 Partial capture
10-02 11:58 40m -18 / - IN3JRZ - / +5 2 ✓ Closing fragment
10-02 11:57 40m -19 / - IQ0YA - / -20 2 ✓ Closing fragment
10-02 11:53 40m - / - OK2VCR -9 / - 2 ✓ Closing fragment
10-02 11:45 40m -21 / - PA1ER - / - 2 ✓ Closing fragment
10-02 11:38 40m -19 / - DL5PF/P - / -3 2 ✓ Closing fragment
10-02 11:36 40m -18 / - IQ0YA - / -15 2 ✓ Closing fragment
10-02 11:30 40m -19 / - DD4DZ - / -21 2 Partial capture
10-02 11:23 40m -21 / - G5STU - / -11 6 Partial capture
10-02 11:18 40m -20 / +2 DG0JBA -8 / -2 5 ✓ Full exchange observed
10-02 11:16 40m -18 / - PD3JW - / -12 3 ✓ Closing fragment
10-02 11:15 40m -20 / - IN3IZQ - / -2 2 ✓ Closing fragment
10-02 11:11 40m -20 / -19 DD7EE -13 / +8 5 ✓ Full exchange observed
10-02 11:09 40m -20 / -15 SQ5ROB -8 / -14 7 ✓ Full exchange observed
10-02 11:05 40m -24 / -4 S57CT -8 / -2 5 ✓ Full exchange observed
10-02 11:02 40m -19 / - PD0MGR - / -14 3 ✓ Closing fragment
10-02 11:00 40m -20 / - DF4JY - / -11 2 ✓ Closing fragment
10-02 10:57 40m -20 / - IK8TWV - / -16 4 ✓ Closing fragment
10-02 10:47 40m -18 / - M1DBB - / -3 2 ✓ Closing fragment
08-28 12:17 40m - / +2 DL9KM -10 / - 3 ✓ Closing fragment
08-28 11:48 40m - / - DG0OCY -7 / - 3 ✓ Closing fragment
08-28 11:48 40m - / 0 IK2GAU -15 / - 5 ✓ Closing fragment
08-28 05:59 20m -8 / - DH3LAT - / +9 5 Partial capture
08-28 05:32 40m +1 / - DK0ACI - / - 9 Partial capture
08-24 08:41 40m - / -5 HA3HZ -19 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
120100 -18 1327  CQ DL9SFE JN48
120115 -13 1020  DL9SFE HA5WZ JN97
120130 -20 1327  M1DBB DL9SFE -02
120145 -13 2484  DL9SFE DD7FC JN49
120200 -20 1327  M1DBB DL9SFE -02
120215  -9 2485  DL9SFE DD7FC JN49 (x2)
120500 -22 1327  M1DBB DL9SFE -02 (x2)
120800 -20 1328  CQ DL9SFE JN48 (x3)
121930 -18 1327  SM7HZK DL9SFE RR73 (x3)
20m 
UTC    dB Audio  Message
055930  -6  918  DH3LAT DL9SFE +09 (x5)

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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