DK7UC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN39

Receiver-side FT8 activity involving DK7UC, decoded by SO8OO in southeastern Poland. 29 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-04 and 2026-09-12.

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 29 FT8 messages attributed to DK7UC 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 (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (69%); the estimated median was -17 dB.

Overview

29
Messages attributed
3
UTC dates decoded
12
Active 15-min windows
-17 dB
Estimated median S/N

Bands

40m · 29
First attributed message: 2026-09-04
Last attributed message: 2026-09-12 10:08 UTC

Observed FT8 message patterns

Attributed sample
29 messages
Active dates
3 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-21 to -10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 0.

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 DK7UC 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 DK7UC

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
JN39 · 16 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,063 km (approx.)
Last such locator decoded
2026-09-12 09:29 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 UTCBandDK7UC S/NCounterpartCounterpart S/NMsgsCapture
09-20 09:55 40m - / -4 DD7EE -10 / - 2 ✓ Closing fragment
09-12 09:49 40m -17 / -9 DL6UM -6 / -7 10 ✓ Full exchange observed
09-12 09:48 40m - / - I4BUQ -15 / - 2 Partial capture
09-12 09:41 40m - / -3 HB9DGZ -8 / - 2 ✓ Closing fragment
09-12 09:10 40m -18 / - OZ7DR - / -5 2 ✓ Closing fragment
09-12 09:09 40m - / -1 OE3EAR +6 / - 2 Partial capture
09-12 09:01 40m - / - SP9UPH +11 / - 2 Partial capture
09-12 08:37 40m - / -8 DJ0MAB -18 / - 2 ✓ Closing fragment
09-12 08:35 40m - / -5 OK1HEH -7 / - 2 ✓ Closing fragment
09-12 08:26 40m - / -5 DJ0FF -16 / - 2 Partial capture
09-12 08:23 40m -18 / -5 S51TN 0 / - 3 ✓ Closing observed
09-12 08:19 40m - / - F1UNR -17 / - 4 Partial capture
09-12 08:12 40m -16 / - IZ5RKH - / - 2 Partial capture
09-10 11:02 40m - / -12 9A9TT -10 / - 3 ✓ Closing fragment
09-10 10:30 40m -12 / -3 SP2IHI -6 / +9 4 ✓ Full exchange observed
09-10 10:28 40m -15 / - G6HUI - / - 3 Partial capture
09-10 10:24 40m -16 / -16 S53AK -6 / - 4 ✓ Closing observed
09-10 10:22 40m -12 / - F1RIQ - / -6 2 Partial capture
09-10 10:21 40m -12 / - GW7HQL - / - 2 Partial capture
09-04 09:07 40m - / +5 DL7DL -6 / - 8 ✓ Closing fragment
09-04 08:58 40m - / -21 IK4RVY -19 / - 2 Partial capture
08-31 09:37 40m - / -5 DG9FEH -20 / - 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
094915  -2  758  DK7UC DL6UM JO60 (x7)
095230 -17 1034  DL6UM DK7UC -07
095245  -4  758  DK7UC DL6UM R-12 (x2)
095330 -16 1034  DL1ASL DK7UC 73
100545  -6 2829  DK7UC SO5WD KO02
100830 -17 1034  DH3GAR DK7UC R+12
095500 -11 1318  DK7UC DD7EE -04 (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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