DF9TF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN37

Receiver-side FT8 activity involving DF9TF, decoded by SO8OO in southeastern Poland. 80 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-25 and 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 80 FT8 messages attributed to DF9TF as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (98%), followed by 40 m (3%). Most decodes (91%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -3 dB.

Overview

80
Messages attributed
4
UTC dates decoded
17
Active 15-min windows
-3 dB
Estimated median S/N

Bands

80m · 78 40m · 2
First attributed message: 2026-08-25
Last attributed message: 2026-08-29 21:15 UTC

Observed FT8 message patterns

Attributed sample
80 messages
Active dates
4 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-13 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 59.

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 DF9TF 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 DF9TF

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
JN37 · 57 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,116 km (approx.)
Last such locator decoded
2026-08-29 21:15 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 UTCBandDF9TF S/NCounterpartCounterpart S/NMsgsCapture
08-29 21:13 80m -8 / - DL3HBT - / - 4 Partial capture
08-29 20:21 80m +2 / - RI1FJL - / -22 10 Partial capture
08-29 18:45 80m +7 / - DL3HBT - / - 2 Partial capture
08-29 18:42 80m - / - DL5EBS -11 / - 5 Partial capture
08-29 18:39 80m +4 / - UA1OMS - / -12 6 ✓ Closing fragment
08-29 18:35 80m -2 / - SV9MBH - / - 4 Partial capture
08-29 18:33 80m +7 / - DO/PD1WD - / - 3 Partial capture
08-29 18:18 80m +2 / - DL3HBT - / - 7 Partial capture
08-29 17:59 80m -8 / - DL3HBT - / - 2 Partial capture
08-28 19:31 80m -16 / - RI1FJL - / - 4 Partial capture
08-28 19:26 80m -7 / - DL3HBT - / - 7 Partial capture
08-28 17:39 80m - / - DL5EBS -9 / - 2 Partial capture
08-28 17:35 80m - / - DL5EBS -12 / - 2 Partial capture
08-28 17:33 80m -4 / -16 UR4LRG +15 / -12 10 ✓ Full exchange observed
08-28 17:27 80m +1 / - DK7ZT -11 / -5 5 ✓ Full exchange observed
08-28 17:26 80m +1 / -15 R7DX +9 / -20 5 ✓ Full exchange observed
08-28 16:54 80m -10 / - DL1HDL - / - 2 Partial capture
08-28 16:49 80m -6 / - DL3HBT - / - 2 Partial capture
08-28 15:57 80m -9 / -22 OE1TKS +7 / -16 4 ✓ Full exchange observed
08-28 15:51 80m -4 / -1 DL9KM -11 / -13 7 ✓ Full exchange observed
08-28 15:50 80m - / - OE1TKS -4 / - 2 Partial capture
08-28 15:49 80m -15 / - DD0AM - / -8 3 ✓ Closing fragment
08-25 20:20 40m +10 / - RI1FJL - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
190845 -14 1485  DF9TF SV9MBH +02
202145 -17 1178  RI1FJL DF9TF JN37 (x10)
211315 -11  804  DL3HBT DF9TF JN37 (x4)
40m 
UTC    dB Audio  Message
202045  +9 1691  RI1FJL DF9TF JN37 (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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