DO9KB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN58

Receiver-side FT8 activity involving DO9KB, decoded by SO8OO in southeastern Poland. 3,650 FT8 messages attributed to this token as transmitter, on 160m, 80m, 10m, across 92 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-06.

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 3,650 FT8 messages attributed to DO9KB as the transmitting token by decoded message structure across 92 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (91%), followed by 160 m (6%) and 10 m (3%). Most decodes (97%) 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 (91%); the estimated median was +2 dB.

Overview

3,650
Messages attributed
92
UTC dates decoded
395
Active 15-min windows
+2 dB
Estimated median S/N

Bands

160m · 205 80m · 3,332 10m · 113
First attributed message: 2026-06-06
Last attributed message: 2026-10-06 17:30 UTC

Observed FT8 message patterns

Attributed sample
3,650 messages
Active dates
92 UTC dates
Estimated median S/N
+2 dB
Estimated 10th-90th percentile
-8 to +11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 66, moderate (-15 to -9 dB) 263, strong (≥ -8 dB) 3,321.

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 DO9KB 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 DO9KB

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
JN58 · 2,705 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
799 km (approx.)
Last such locator decoded
2026-10-06 17:29 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 UTCBandDO9KB S/NCounterpartCounterpart S/NMsgsCapture
10-06 17:29 160m -8 / -10 DF9JL -23 / -8 3 ✓ Full exchange observed
10-06 17:23 160m -7 / -1 DO9FWA -24 / -24 5 ✓ Full exchange observed
10-06 17:08 80m -4 / 0 OH3MB -6 / -18 18 ✓ Full exchange observed
10-06 15:53 80m -5 / - CE4HG - / - 11 Partial capture
10-05 18:38 80m +4 / -8 YO8XFU -13 / -19 8 ✓ Full exchange observed
10-05 17:43 80m +2 / -1 HB3YTK -14 / -9 4 ✓ Full exchange observed
10-05 17:32 80m +8 / - PE1JLZ -7 / -11 7 Partial capture
10-04 15:38 80m +2 / - DO4SO +4 / - 7 ✓ Full exchange observed
10-03 17:10 80m - / -16 RY3F -15 / - 3 Partial capture
10-03 17:07 80m - / - DO2DLE -6 / - 2 Partial capture
10-03 16:58 80m +9 / -15 RW3VR +1 / -4 5 ✓ Full exchange observed
10-01 18:34 80m +2 / - DO4FOX - / -15 6 Partial capture
10-01 17:34 80m +5 / -17 R4FDK -12 / -10 14 Partial capture
10-01 17:31 80m +8 / - DL8WEM +4 / - 5 ✓ Full exchange observed
10-01 17:28 80m +10 / - DL1LMD -2 / +1 3 ✓ Closing observed
10-01 15:41 80m +2 / +3 DO4EB -24 / +10 3 ✓ Full exchange observed
09-30 17:39 80m +11 / -1 GX7RAF/P -12 / -14 4 ✓ Full exchange observed
09-30 17:27 80m +14 / - UI4I +2 / -12 13 Partial capture
09-29 19:10 80m +6 / - DL2MED -18 / -16 5 ✓ Full exchange observed
09-29 19:00 80m +6 / - DA6BR -13 / -8 3 ✓ Closing observed
09-29 17:29 80m +5 / - SP5MIG - / -20 9 Partial capture
09-29 17:14 80m +8 / -5 SP5MIG -10 / -20 9 Partial capture
09-29 15:47 80m +2 / - DF5DY -6 / +8 5 ✓ Full exchange observed
09-29 15:43 80m 0 / -8 DL6CZG -16 / - 5 ✓ Full exchange observed
09-28 18:08 80m - / - R4HLO -16 / - 2 Partial capture
09-28 17:46 80m - / - DL8BAO -12 / - 2 Partial capture
09-28 15:40 80m -2 / - SP2L -14 / -1 3 ✓ Closing observed
09-27 18:02 160m -3 / -9 DK9BF -13 / +6 11 ✓ Full exchange observed
09-27 17:51 80m -2 / - EH3ST - / -14 8 Partial capture
09-27 17:48 80m +4 / -2 PA5TON 0 / -8 4 ✓ Full exchange observed
09-27 17:29 80m +7 / - DL4SZB +12 / -4 3 ✓ Closing observed
09-27 17:27 80m - / - R3HH +12 / - 2 Partial capture
09-27 17:20 80m -2 / +10 DM1EE 0 / -4 3 ✓ Full exchange observed
09-27 05:22 160m -18 / - F1IQH - / -9 2 ✓ Closing fragment
09-27 05:16 80m +8 / - DK8HC/P - / - 8 Partial capture
09-27 05:15 80m +10 / +8 DA1MK -8 / -11 4 ✓ Full exchange observed
09-25 19:41 160m -6 / - OE5OBR - / -13 11 Partial capture
09-25 19:38 160m +2 / -10 IZ5NSH -12 / -9 4 ✓ Full exchange observed
09-25 19:37 160m - / - OE5OBR -3 / - 3 Partial capture
09-25 18:50 160m -8 / - PA3GQM - / -20 2 ✓ Closing fragment
09-25 18:48 160m -8 / - DF1TS -13 / - 5 ✓ Full exchange observed
09-25 17:46 160m -8 / - DJ1NE -15 / +1 5 ✓ Full exchange observed
09-25 17:43 160m - / +8 DO1MER -18 / - 3 ✓ Closing fragment
09-24 18:16 160m -10 / +3 DD3KF -10 / +6 7 ✓ Full exchange observed
09-24 18:14 160m -7 / +3 OE6AXG +14 / +9 5 ✓ Full exchange observed
09-24 18:12 160m -8 / -13 OH6RE -12 / -14 5 ✓ Full exchange observed
09-24 18:08 160m -8 / -4 IU3RRX -13 / +9 8 ✓ Full exchange observed
09-24 18:06 160m -11 / - DH1VY -15 / -1 4 ✓ Full exchange observed
09-24 18:05 160m -12 / +4 DK5WO -6 / -4 7 ✓ Full exchange observed
09-24 17:59 160m -4 / - DO1KKP - / -16 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
180530  -7 1748  DO9KB DK9BF R-10
180545  -4  986  DK9BF DO9KB RR73
180600 -12 1747  DO9KB DK9BF 73
172145  -9 1887  CQ DO9KB JN58 (x3)
172315 -12 1897  DO9FWA DO9KB -24
172330 -24 1887  DO9KB DO9FWA R-01
172345  -4 1897  DO9FWA DO9KB -24 (x3)
172915 -11 1343  CQ DO9KB JN58
172945 -10 1343  DF9JL DO9KB -08
173000 -23 1343  DO9KB DF9JL R-10
173015  -6 1343  DF9JL DO9KB RR73
80m 
UTC    dB Audio  Message
170845  +0 1433  OH3MB DO9KB -18
170900  -4 1596  DO9KB OH3MB R+00
170915  -1 1433  OH3MB DO9KB -18 (x7)
171230  +0 1433  DO9KB OH3MB R+01 (x2)
171345  -6 1432  OH3MB DO9KB RR73
171400  -5 2105  DO9KB OH3MB 73
171415  -2 1433  OH3MB DO9KB RR73 (x2)
40m 
UTC    dB Audio  Message
184715 -13 1247  DO9KB DK7UY JO44 (x4)
10m 
UTC    dB Audio  Message
165745  -5  730  SV9MBH DO9KB -16 (x2)
165915  -6  730  CQ DO9KB JN58 (x5)
170145  -7  733  TA7ARH DO9KB +03 (x2)
170315 -13 1511  CQ DO9KB JN58 (x3)
170445  -8 1519  RK6OQ DO9KB -11 (x3)

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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