DL4RBR — 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 DL4RBR, decoded by SO8OO in southeastern Poland. 294 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 39 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-21.

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 294 FT8 messages attributed to DL4RBR as the transmitting token by decoded message structure across 39 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (34%), followed by 80 m (31%) and 40 m (26%). Most decodes (54%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

294
Messages attributed
39
UTC dates decoded
81
Active 15-min windows
-8 dB
Estimated median S/N

Bands

80m · 91 40m · 77 20m · 101 10m · 25
First attributed message: 2026-06-07
Last attributed message: 2026-09-21 01:08 UTC

Observed FT8 message patterns

Attributed sample
294 messages
Active dates
39 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-21 to +3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 66, moderate (-15 to -9 dB) 72, strong (≥ -8 dB) 156.

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 DL4RBR 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 DL4RBR

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 · 198 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
777 km (approx.)
Last such locator decoded
2026-09-20 02:16 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 UTCBandDL4RBR S/NCounterpartCounterpart S/NMsgsCapture
09-21 01:06 80m -3 / - RI1FJZ - / -17 2 Partial capture
09-21 01:03 80m -1 / - RI1FJZ - / -17 2 Partial capture
09-21 00:42 40m - / -15 K4CAE -10 / - 2 ✓ Closing fragment
09-21 00:38 40m - / -14 W2NO -18 / - 2 ✓ Closing fragment
09-20 02:47 40m - / -14 T46W -19 / - 3 Partial capture
09-20 02:14 80m +2 / - HI8R - / - 4 Partial capture
09-20 02:13 80m +4 / - HI8JCD - / - 3 Partial capture
09-16 23:49 40m - / -11 VO1AW -20 / - 2 ✓ Closing fragment
09-04 04:57 40m -17 / - ZL3GAV - / -19 4 ✓ Closing fragment
09-04 04:52 40m -12 / - D44TWO - / -17 4 Partial capture
09-04 04:46 40m -2 / - D44TWO - / -14 7 Partial capture
09-03 21:12 40m -2 / - II7MGMU - / -10 2 Partial capture
09-01 02:00 40m - / -17 UA4FKT +8 / - 4 ✓ Closing fragment
09-01 01:59 40m - / -11 PT7YV -4 / - 2 ✓ Closing fragment
09-01 01:29 40m - / -15 K3JGJ -14 / - 2 ✓ Closing fragment
09-01 01:13 40m - / -12 HI8J -3 / - 2 ✓ Closing fragment
08-31 12:31 20m -14 / - DL1DVE/P - / -11 2 Partial capture
08-30 21:25 20m - / -14 PP5HR -14 / - 5 ✓ Closing fragment
08-27 04:45 20m - / -12 AC5UV -9 / - 7 Partial capture
08-25 00:41 20m - / -14 K1VK -10 / - 2 ✓ Closing fragment
08-24 21:31 20m - / -17 CX8DS -12 / - 2 ✓ Closing fragment
08-23 22:18 20m - / +4 W2NO -4 / - 2 Partial capture
08-22 08:23 20m -11 / - II7MGLE - / -13 2 Partial capture
08-22 05:19 20m +2 / - CT3MD +6 / +1 5 Partial capture
08-22 05:08 20m -11 / - N3KJE - / - 2 Partial capture
08-22 04:57 20m -11 / - D2IM - / - 5 Partial capture
08-22 04:52 20m -5 / - W9ZCL - / -14 9 ✓ Closing fragment
08-22 04:47 20m -20 / - XQ1KK - / -5 2 ✓ Closing fragment
08-21 18:23 20m -22 / - BG7BVI - / - 2 Partial capture
08-21 14:42 20m -4 / - R0SAU - / - 3 Partial capture
08-21 09:54 20m - / -2 HA3LI +3 / - 2 ✓ Closing fragment
08-21 03:43 80m +2 / - <...> - / - 4 Partial capture
08-17 23:02 80m 0 / - PY6HD - / - 2 Partial capture
08-17 22:26 40m -14 / - <...> - / - 2 Partial capture
08-16 08:31 20m -19 / - DA0LH -10 / +9 2 ✓ Closing observed
08-16 04:42 40m -11 / - KP3RE - / - 5 ✓ Closing fragment
08-15 14:45 20m - / - M6ILA -14 / - 2 Partial capture
08-13 03:32 80m -1 / - N0BUZ - / - 2 Partial capture
08-13 03:28 80m -1 / - SA0PAL -1 / -20 6 ✓ Closing observed
08-13 03:27 80m 0 / - <...> - / - 3 Partial capture
08-13 03:23 80m -3 / - <...> - / -11 2 Partial capture
08-12 15:24 20m -23 / - DH2RL - / -8 2 ✓ Closing fragment
08-12 03:24 80m -6 / - WB2AA - / - 3 Partial capture
08-12 03:20 80m +2 / +2 OE5DML +6 / +4 6 ✓ Full exchange observed
08-12 03:18 80m 0 / - <...> - / +6 2 Partial capture
08-11 14:41 20m - / -7 DF3VX -18 / - 2 Partial capture
08-09 03:23 80m -3 / - HI8JCD - / - 5 Partial capture
08-09 03:22 80m -7 / - 9J2FI - / - 3 Partial capture
08-09 03:19 80m 0 / - HI8JCD - / - 3 Partial capture
08-09 03:18 80m -8 / - 9J2FI - / - 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
034415  +3 2287  <...> DL4RBR JN59 (x2)
034500  -4 1427  DL4RBR DL70ESSEN -09
034515  +4 2287  <...> DL4RBR R+18
021300  +3 2182  HI8JCD DL4RBR JN59 (x3)
021430  +2 2183  HI8R DL4RBR JN59 (x4)
010315  +1 2146  RI1FJZ DL4RBR R-17 (x4)
40m 
UTC    dB Audio  Message
045345 -12 2342  D44TWO DL4RBR R-17 (x2)
045745 -18 1643  ZL3GAV DL4RBR R-19 (x4)
234915 -16 1385  DL4RBR VO1AW -11 (x2)
024730 -21 1462  DL4RBR T46W -14 (x3)
003830 -16 2094  DL4RBR W2NO -14 (x2)
004200  -9 1997  DL4RBR K4CAE -15 (x2)
20m 
UTC    dB Audio  Message
044645  -7 2461  DL4RBR AC5UV -12 (x6)
212130  -8 2777  DL4RBR LW1DZ RR73
212515 -16 1371  DL4RBR PP5HR -14 (x5)
122600 -11 1615  DL4RBR ER1SKI/P RR73
123115 -13 2538  DL1DVE/P DL4RBR JN59 (x2)
10m 
UTC    dB Audio  Message
095330 -13 2679  DL4RBR DK2WHS 73
095345 -14 1651  DK2WHS DL4RBR 73
100400 -10 1489  RA9CAD DL4RBR JN59 (x7)
134430 -21 1879  DL4RBR GB1500M +08
134445 -18 1879  GB1500M DL4RBR R+14
134845 -11 1167  PP5GER DL4RBR JN59
135245 -12 1505  PY2ABL DL4RBR JN59 (x2)
152715 -17 2105  9H4JX DL4RBR R-18

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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