DB3EH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO42

Receiver-side FT8 activity involving DB3EH, decoded by SO8OO in southeastern Poland. 2,263 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-04.

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 2,263 FT8 messages attributed to DB3EH as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 20 m (40%) and 80 m (2%). Most decodes (63%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

2,263
Messages attributed
14
UTC dates decoded
190
Active 15-min windows
-9 dB
Estimated median S/N

Bands

80m · 37 60m · 12 40m · 1,317 20m · 894 10m · 3
First attributed message: 2026-06-06
Last attributed message: 2026-09-04 08:57 UTC

Observed FT8 message patterns

Attributed sample
2,263 messages
Active dates
14 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-17 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 348, moderate (-15 to -9 dB) 826, strong (≥ -8 dB) 1,089.

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 DB3EH 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 DB3EH

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
JO42 · 1,908 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
934 km (approx.)
Last such locator decoded
2026-09-04 08:57 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 UTCBandDB3EH S/NCounterpartCounterpart S/NMsgsCapture
09-04 08:56 40m -14 / - SM6FZO - / - 2 ✓ Closing fragment
09-04 08:54 40m - / - OK2QP -12 / - 2 Partial capture
09-04 08:48 40m -16 / - OT4N -20 / -21 3 ✓ Closing observed
09-04 08:46 40m -20 / +2 OK2QP +2 / 0 3 Partial capture
09-04 08:36 40m - / - SQ8V -3 / - 2 Partial capture
09-04 08:35 40m - / - DL7DL -2 / - 3 Partial capture
09-04 08:15 40m -14 / - F4JUO - / -2 2 ✓ Closing fragment
09-04 08:08 40m - / - HA8SDI +3 / - 11 Partial capture
09-04 07:49 40m -16 / -12 IZ4AIF -7 / -12 5 ✓ Full exchange observed
09-04 07:42 40m -16 / - LA9OFA - / -24 2 ✓ Closing fragment
09-04 07:22 40m -14 / - M0PFX - / -14 3 ✓ Closing fragment
09-04 07:20 40m -13 / -19 YO3GNF -10 / -24 13 ✓ Full exchange observed
09-04 07:11 40m -11 / - TI4LAS - / - 5 Partial capture
09-04 07:06 40m -14 / -4 OE1AVO +4 / +4 7 ✓ Full exchange observed
09-04 07:01 40m - / - DL6RS -2 / - 3 Partial capture
09-04 07:01 40m -16 / - F1PSX - / -23 2 ✓ Closing fragment
09-04 07:01 40m - / -15 F1PBZ -8 / - 2 Partial capture
09-04 07:00 40m - / 0 YO3GNF -7 / - 7 Partial capture
09-04 06:52 40m -12 / - ON4CVL - / -13 2 ✓ Closing fragment
09-04 06:50 40m -14 / - F6FHZ - / -13 2 ✓ Closing fragment
09-04 06:49 40m -10 / - LB2WD - / -3 2 ✓ Closing fragment
09-04 06:47 40m -14 / - M7FQH - / -7 2 ✓ Closing fragment
09-04 06:47 40m - / - DL6RS -5 / - 10 Partial capture
09-04 06:44 40m -10 / -2 DL6UCK -7 / +4 6 ✓ Full exchange observed
09-04 06:43 40m -11 / -11 UX7QV -13 / -10 5 ✓ Full exchange observed
09-04 06:19 40m -17 / - SP7TF - / -8 2 ✓ Closing fragment
09-04 06:19 40m - / - OK2QP 0 / - 3 Partial capture
09-04 06:17 40m -15 / - N8HRZ - / +2 3 ✓ Closing fragment
09-04 06:14 40m -14 / - SP7TF - / -1 3 Partial capture
09-04 04:54 40m -3 / - EB3JT -16 / +10 7 Partial capture
08-23 07:25 20m - / - 9A2LM -10 / - 2 Partial capture
08-23 07:21 20m -5 / - KH6M - / -10 3 ✓ Closing fragment
08-23 07:20 20m - / - UT4VL -12 / - 2 Partial capture
08-23 07:09 20m -8 / -11 F1PPH -4 / - 5 ✓ Closing observed
08-23 07:06 20m -9 / - HF5A - / -16 2 ✓ Closing fragment
08-23 06:56 20m -10 / -5 F1ODM +7 / -5 6 ✓ Full exchange observed
08-23 06:53 20m -6 / -10 RA6HN -8 / -15 4 ✓ Full exchange observed
08-23 04:56 20m - / -15 LZ2VQ -20 / - 2 Partial capture
08-23 04:54 20m - / - RA6OV -10 / - 2 Partial capture
08-23 04:40 20m - / - RZ4FWA -14 / - 2 Partial capture
08-23 04:38 20m - / -13 TA2FE +4 / - 3 Partial capture
08-23 04:13 20m - / -17 R3KCW +4 / - 2 Partial capture
08-23 04:06 20m - / -17 R3KCW +4 / - 6 Partial capture
08-23 02:56 20m - / -18 R0AX -17 / - 3 ✓ Closing fragment
08-23 02:42 20m - / - KB4XT 0 / - 2 Partial capture
08-23 02:31 20m -15 / - W4VNE - / -16 3 ✓ Closing fragment
08-23 02:28 20m -16 / - AC4SP - / - 6 Partial capture
08-23 02:25 20m -13 / - KR4AOT -13 / -11 5 ✓ Closing observed
08-23 02:21 20m -12 / - N9XHN - / - 7 Partial capture
08-23 02:18 20m -10 / - WV2B - / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
084900 -15 2138  OT4N DB3EH 73
085030 -13 2138  CQ DB3EH JO42 (x2)
085115 -24 1930  DB3EH SM6FZO JO66
085300 -12 2138  CQ DB3EH JO42 (x4)
085445 -12 1607  DB3EH OK2QP JN89 (x2)
085600 -18 2138  CQ DB3EH JO42
085630 -15 2138  SM6FZO DB3EH +11 (x2)
085730 -14 2138  CQ DB3EH JO42
085745  -6 2197  DB3EH OK2QP JN89
20m 
UTC    dB Audio  Message
071315  -4 1889  CQ DB3EH JO42 (x3)
072000 -12 1887  DB3EH UT4VL KN58
072015  -7 1888  CQ DB3EH JO42
072100 -11 1887  DB3EH UT4VL KN58
072115  -6 1888  KH6M DB3EH JO42 (x3)
072400 -11 1888  CQ DB3EH JO42 (x3)
072515 -11 1549  DB3EH 9A2LM JN86
072530  -9 1888  CQ DB3EH JO42
072545 -10 1547  DB3EH 9A2LM JN86
80m 
UTC    dB Audio  Message
191245 -13 1883  D2UY DB3EH JO42 (x2)
191330 -18 1971  DB3EH D2UY -16
191345  -9 1883  D2UY DB3EH JO42
191400 -14 1971  DB3EH D2UY -16
191415 -11 1883  D2UY DB3EH JO42
191430 -16 1971  DB3EH D2UY RR73
191445  -4 1883  D2UY DB3EH JO42
191915  -8 1883  EW8AAC DB3EH JO42
191930  -8 1696  DB3EH EW8AAC -15
191945  -5 1883  EW8AAC DB3EH R-13
192000  -6 1696  DB3EH EW8AAC RR73
192015  -8 1883  EW8AAC DB3EH 73 (x3)
10m 
UTC    dB Audio  Message
163200 -16  956  DB3EH F5RRS JN36 (x2)
163345 -17 1268  GD6ICR DB3EH 73
163630 -18 1269  EA5IY DB3EH JO42 (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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