DJ7BU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN59

Receiver-side FT8 activity involving DJ7BU, decoded by SO8OO in southeastern Poland. 753 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 44 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-31.

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 753 FT8 messages attributed to DJ7BU as the transmitting token by decoded message structure across 44 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (54%), followed by 20 m (33%) and 60 m (9%). Most decodes (57%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -6.9 dB.

Overview

753
Messages attributed
44
UTC dates decoded
138
Active 15-min windows
-6.9 dB
Estimated median S/N

Bands

80m · 31 60m · 65 40m · 406 20m · 247 10m · 4
First attributed message: 2026-06-07
Last attributed message: 2026-08-31 06:53 UTC

Observed FT8 message patterns

Attributed sample
753 messages
Active dates
44 UTC dates
Estimated median S/N
-6.9 dB
Estimated 10th-90th percentile
-16 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 82, moderate (-15 to -9 dB) 212, strong (≥ -8 dB) 459.

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 DJ7BU 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 DJ7BU

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
JN59 · 398 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
777 km (approx.)
Last such locator decoded
2026-08-31 06:52 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 UTCBandDJ7BU S/NCounterpartCounterpart S/NMsgsCapture
08-31 06:49 40m -3 / - K7ACZ - / - 3 Partial capture
08-30 15:06 40m -4 / - DL2PR - / -2 5 ✓ Closing fragment
08-30 15:04 40m +1 / - <...> - / - 3 Partial capture
08-30 15:02 40m -5 / - EI9KF - / - 2 Partial capture
08-30 15:01 40m -10 / - DH8KAM - / - 2 Partial capture
08-30 14:58 40m -12 / - DK5TX - / 0 2 Partial capture
08-30 14:55 40m -4 / - M9ORB - / -8 4 ✓ Closing fragment
08-30 09:07 20m +5 / 0 F4HSB -13 / -10 4 ✓ Full exchange observed
08-30 09:04 20m +10 / - GB0SL - / -7 4 ✓ Closing fragment
08-30 09:02 20m +11 / -17 M9KJY +1 / - 4 Partial capture
08-29 15:52 40m +2 / - M0TNI - / - 2 Partial capture
08-29 15:50 40m -1 / - IR7MGGC - / +1 2 Partial capture
08-29 15:48 40m -3 / - SQ5RJA - / -8 3 ✓ Closing fragment
08-29 15:44 40m -2 / - M7GQW - / -12 4 ✓ Closing fragment
08-29 15:41 40m -2 / - F4JUG - / -12 3 ✓ Closing fragment
08-29 15:37 40m +4 / +8 M1DZI -14 / +5 5 ✓ Full exchange observed
08-29 15:34 40m 0 / - EU2AAI - / -3 3 ✓ Closing fragment
08-27 06:03 40m +3 / - G0GTV - / -17 3 ✓ Closing fragment
08-24 18:55 20m - / -14 R1QD -7 / - 3 Partial capture
08-24 18:34 40m +2 / -11 EN35UKR -8 / -7 5 ✓ Full exchange observed
08-24 18:30 40m -1 / - DH5BM - / - 2 Partial capture
08-24 18:28 40m -1 / - DL1ECG - / +8 2 ✓ Closing fragment
08-23 17:51 40m +2 / - F4LTP -12 / - 3 ✓ Closing observed
08-23 16:59 40m -16 / -2 OE5ABL -4 / -2 2 Partial capture
08-23 16:59 40m 0 / - MM8FKF - / -16 3 Partial capture
08-23 16:55 40m -7 / - DM2HK - / - 2 Partial capture
08-23 16:50 40m +2 / - DL9DXL - / - 2 Partial capture
08-21 06:40 20m -2 / - LA4WGA - / -18 5 Partial capture
08-21 06:27 20m - / -5 UN0GY -16 / - 2 ✓ Closing fragment
08-18 10:16 10m -6 / - EA3IOB - / - 2 Partial capture
08-16 14:37 20m - / +5 GM3RTG -10 / - 9 Partial capture
08-14 15:54 20m - / +2 R4FDW -13 / - 9 Partial capture
08-14 15:53 20m - / 0 GI6HKE -2 / - 2 ✓ Closing fragment
08-14 15:51 20m -10 / - <...> - / - 3 Partial capture
08-14 15:50 20m -14 / - R0SDM/P - / - 2 Partial capture
08-09 19:04 60m +3 / +8 DR800WE -4 / - 2 Partial capture
08-09 19:02 60m -2 / - <...> - / -12 2 Partial capture
08-09 19:00 60m +4 / -13 OH7HRH -14 / - 6 Partial capture
08-09 18:59 60m +6 / - DL9DXL - / -17 2 Partial capture
08-09 18:54 60m -1 / -6 EH1SGG -18 / -5 4 ✓ Full exchange observed
08-09 18:50 80m - / - IK2TPX -14 / - 9 Partial capture
08-09 18:48 80m -4 / -13 R1WBW +11 / +4 5 ✓ Full exchange observed
08-09 18:46 80m -4 / -4 DK7XD -4 / -7 5 ✓ Full exchange observed
08-09 18:44 80m -5 / - ON8MA - / -12 3 ✓ Closing fragment
08-09 18:41 80m -4 / -3 DL2JLB -19 / -12 2 Partial capture
08-09 18:38 80m -14 / -2 DK5OPA -23 / - 5 ✓ Closing observed
08-09 18:35 80m -4 / - DO3OLI - / - 2 Partial capture
08-09 18:33 80m -3 / -11 SP7MKG +9 / - 4 Partial capture
08-09 18:30 80m -2 / -4 DF7QR -4 / - 4 ✓ Full exchange observed
08-09 18:25 80m - / - YL2NX -3 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
150215  -9 1392  DH8KAM DJ7BU JN59
150245  -6 1741  EI9KF DJ7BU JN59 (x2)
150415  +4  630  <...> DJ7BU JN59 (x3)
150615  -1 1244  DL2PR DJ7BU JN59 (x5)
064900  -3  955  K7ACZ DJ7BU JN59 (x3)
065315  -9  878  GB64MOD DJ7BU R-03
20m 
UTC    dB Audio  Message
185530  -5 1542  DJ7BU R1QD -14 (x3)
090200  +9  644  M9KJY DJ7BU JN59
090215  +1  644  DJ7BU M9KJY -17
090230 +14  644  M9KJY DJ7BU JN59 (x2)
090400  +5 1943  GB0SL DJ7BU JN59 (x4)
090700  +8 1747  F4HSB DJ7BU -10 (x2)
090745 -13 1747  DJ7BU F4HSB R+00
090800  +9  359  F4HSB DJ7BU RR73
10m 
UTC    dB Audio  Message
063430 -17 1808  DJ7BU RA0ADQ -15
101645  -7 1601  EA3IOB DJ7BU JN59 (x2)
102115  -8 2120  CQ DJ7BU JN59
102545  -7  724  UX2SB DJ7BU JN59
60m 
UTC    dB Audio  Message
185515  -2 1238  EH1SGG DJ7BU R-05 (x2)
185630  -4 1238  DL9DXL DJ7BU JN59 (x3)
190030  +8  572  OH7HRH DJ7BU JN59 (x3)
190215 -14 1319  DJ7BU OH7HRH -13
190230  -3 1839  <...> DJ7BU JN59
190245 -14 1317  DJ7BU OH7HRH -13
190300  +0 1839  <...> DJ7BU R-12
190315 -13 1318  DJ7BU OH7HRH -13
190430  -4 1655  DJ7BU DR800WE +08
190445  +3 1655  DR800WE DJ7BU R+13
80m 
UTC    dB Audio  Message
184800 +10 1065  DJ7BU R1WBW KO46
184815  -3 1202  R1WBW DJ7BU +04
184830 +12 1065  DJ7BU R1WBW R-13
184845  -6 1202  R1WBW DJ7BU RR73
184900 +10 1066  DJ7BU R1WBW 73
185000 -13 1202  DJ7BU IK2TPX JN45
185015 -12 1202  CQ DJ7BU JN59
185030 -14 1203  DJ7BU IK2TPX JN45 (x8)

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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