DB0CUI — 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 DB0CUI, decoded by SO8OO in southeastern Poland. 964 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-14.

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 964 FT8 messages attributed to DB0CUI as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (49%), followed by 80 m (44%) and 20 m (7%). The busiest six-hour window was 18:00-00:00 UTC, containing 45% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.7 dB.

Overview

964
Messages attributed
25
UTC dates decoded
140
Active 15-min windows
-10.7 dB
Estimated median S/N

Bands

80m · 421 40m · 473 20m · 70
First attributed message: 2026-06-07
Last attributed message: 2026-09-14 15:17 UTC

Observed FT8 message patterns

Attributed sample
964 messages
Active dates
25 UTC dates
Estimated median S/N
-10.7 dB
Estimated 10th-90th percentile
-20.2 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 293, moderate (-15 to -9 dB) 245, strong (≥ -8 dB) 426.

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 DB0CUI 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 DB0CUI

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 · 397 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
799 km (approx.)
Last such locator decoded
2026-09-14 15:17 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 UTCBandDB0CUI S/NCounterpartCounterpart S/NMsgsCapture
09-14 16:22 80m - / -18 DL0MFS -11 / - 2 ✓ Closing fragment
09-14 15:17 40m -10 / - UB3BDJ/6 - / 0 2 Partial capture
09-14 15:15 40m -15 / +7 II8IHBC -20 / -4 3 Partial capture
09-14 15:13 40m -13 / - PD2MAC/P - / -8 2 Partial capture
09-14 15:09 40m -9 / - R6HV/P - / -13 3 Partial capture
09-13 15:00 40m -5 / +8 DG5MLA +9 / - 5 ✓ Closing observed
09-13 14:59 40m - / -2 DL0IR +9 / - 3 ✓ Closing fragment
09-13 14:57 40m -14 / - PA7FB - / -15 2 ✓ Closing fragment
09-13 14:54 40m -14 / - IN3LHF - / -12 2 ✓ Closing fragment
09-13 14:54 40m -15 / - DL3BCU -10 / -13 4 Partial capture
09-13 14:48 40m -16 / +3 3Z100PKP -2 / -6 3 Partial capture
09-13 11:57 40m - / +9 F4DIA -19 / - 2 ✓ Closing fragment
09-06 11:48 40m - / - PD0IFI -6 / - 2 ✓ Closing fragment
09-06 11:46 40m - / +1 DM5ME -4 / - 4 ✓ Closing fragment
09-06 11:39 40m - / -5 HA3HZ -5 / - 6 ✓ Closing fragment
09-06 11:36 40m -23 / - DJ4TP - / -8 2 ✓ Closing fragment
09-06 11:31 40m - / +4 DL0HAM +2 / - 2 ✓ Closing fragment
09-06 11:30 40m -20 / +3 OZ7KJ/P -10 / - 3 ✓ Closing observed
08-29 04:20 80m -2 / +3 DL6RDE +4 / +2 5 ✓ Full exchange observed
08-29 04:18 80m -4 / - <...> - / -8 2 Partial capture
08-29 04:11 80m -10 / - DO2KST - / - 2 Partial capture
08-29 04:09 80m +2 / - DL1OH - / -11 4 ✓ Closing fragment
08-29 04:04 80m -10 / -5 OK1EK +12 / +1 4 ✓ Full exchange observed
08-29 03:54 80m -24 / -12 SP2QCR -8 / - 4 ✓ Closing observed
08-29 03:45 80m - / -17 UR5SG +18 / - 2 ✓ Closing fragment
08-29 03:43 80m -14 / -3 F5RRS +5 / +6 5 ✓ Full exchange observed
08-29 03:42 80m -10 / -14 YO6FNF +10 / -2 4 ✓ Full exchange observed
08-29 03:40 80m 0 / - DM5RC +1 / -5 4 ✓ Full exchange observed
08-29 03:38 80m +2 / -5 IU5LQC +6 / -4 4 ✓ Full exchange observed
08-29 03:36 80m 0 / -8 SM7TZK +11 / -14 7 ✓ Full exchange observed
08-29 03:34 80m -8 / -13 PC1K -18 / -5 4 ✓ Full exchange observed
08-29 03:32 80m +1 / +5 OK1JMB +11 / -4 3 ✓ Full exchange observed
08-29 03:30 80m +3 / - HC1BG - / - 3 Partial capture
08-29 03:28 80m - / +9 PB0ACU -5 / - 2 ✓ Closing fragment
08-29 03:26 80m - / -8 MI0OBC -4 / - 2 ✓ Closing fragment
08-29 03:25 80m +4 / -11 SP9WLC +19 / 0 4 ✓ Full exchange observed
08-29 03:22 80m +10 / - HC1BG - / - 3 Partial capture
08-29 03:20 80m +4 / - F5LMJ - / -7 2 ✓ Closing fragment
08-29 03:17 80m +4 / +3 IT9BYL -6 / -3 7 ✓ Full exchange observed
08-29 03:14 80m +11 / - SM7TZK - / - 4 Partial capture
08-29 03:10 80m +3 / - 9A5E +4 / -6 4 ✓ Closing observed
08-29 03:05 80m +4 / - W9HT - / - 10 Partial capture
08-29 00:38 80m -2 / - G7RHF -18 / -2 4 ✓ Closing observed
08-29 00:36 80m -2 / - F5BRF - / - 2 Partial capture
08-29 00:32 80m -5 / -2 II7MGBT -5 / -9 5 ✓ Full exchange observed
08-29 00:32 80m -5 / - R2AL +7 / 0 8 Partial capture
08-28 23:22 40m 0 / - SM6ONT - / - 3 Partial capture
08-28 23:18 40m -2 / - EA3IWJ - / -11 5 ✓ Closing fragment
08-28 23:08 40m +1 / +2 IZ8PPI -23 / -4 3 ✓ Full exchange observed
08-28 23:07 40m -2 / +3 LZ2II +7 / -3 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
040945  +3  360  DL1OH DB0CUI JN58 (x4)
041145 -11 1302  DO2KST DB0CUI JN58 (x2)
041800  -5 1209  <...> DB0CUI JN58 (x2)
042000  -2 1990  DL6RDE DB0CUI JN58
042015  +2 1989  DB0CUI DL6RDE +03
042030  -3 1990  DL6RDE DB0CUI R+02
042045  +6 1989  DB0CUI DL6RDE RR73
042100  +0 1990  DL6RDE DB0CUI 73
162230 -12 2237  DB0CUI DL0MFS -18 (x2)
40m 
UTC    dB Audio  Message
150030  +7  392  DB0CUI DG5MLA JN58 (x3)
150145  -5  391  DG5MLA DB0CUI RR73
150200 +11  392  DB0CUI DG5MLA 73
150930  -7 2292  R6HV/P DB0CUI JN58 (x3)
151345 -14 1702  PD2MAC/P DB0CUI JN58 (x2)
151515 -15 1359  II8IHBC DB0CUI JN58
151530 -20 1358  DB0CUI II8IHBC +07
151545 -15 1358  II8IHBC DB0CUI R-04
151715  -7 1288  UB3BDJ/6 DB0CUI JN58 (x2)
20m 
UTC    dB Audio  Message
153645  -8 1983  DB0CUI IK4RVY RR73
182500 -13 1229  SV3AUW DB0CUI 73
185130 -17 2084  ER3CT DB0CUI JN58 (x5)
190645 -20 1868  M0CKX DB0CUI R-08 (x2)
191900 -18 1663  RN2FQ DB0CUI JN58 (x4)
182545 -18  993  DB0CUI A41ZZ -09
235645 -23 2144  DB0CUI VE3ARF -10

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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