DB3MM — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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

Receiver-side FT8 activity involving DB3MM, decoded by SO8OO in southeastern Poland. 14 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-10-15 and 2026-10-22.

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 14 FT8 messages attributed to DB3MM as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -7 dB; no usual signal pattern is inferred.

Overview

14
Messages attributed
2
UTC dates decoded
5
Active 15-min windows
-7 dB
Estimated median S/N

Bands

First attributed message: 2026-10-15
Last attributed message: 2026-10-22 07:50 UTC

Observed FT8 message patterns

Attributed sample
14 messages
Active dates
2 UTC dates
Estimated median S/N
-7 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 11.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with DB3MM in decoded directed-looking exchanges:

Most frequent locator attributed to DB3MM

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 · 6 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
777 km (approx.)
Last such locator decoded
2026-10-22 07:49 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 UTCBandDB3MM S/NCounterpartCounterpart S/NMsgsCapture
10-22 07:35 40m -5 / -7 LZ2INP +1 / -3 4 ✓ Full exchange observed
10-22 07:21 40m -4 / - SP7TF - / -17 2 ✓ Closing fragment
10-22 07:13 40m -6 / - EC3A - / -8 2 ✓ Closing fragment
10-15 15:11 40m - / - DK6MR -12 / - 3 Partial capture
10-15 15:11 40m - / - DL7DL -18 / - 2 Partial capture
10-15 15:11 40m - / - 9A4ZM -6 / - 3 Partial capture
10-15 15:11 40m -17 / - DK7ZT -4 / +2 3 ✓ Full exchange observed
10-15 15:11 40m - / - M0KQV -18 / - 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
071315 -10 1333  CQ DB3MM JN59
071345  -6 1333  EC3A DB3MM R-08 (x2)
072115  -3 1332  CQ DB3MM JN59
072145  +0 1332  SP7TF DB3MM R-17 (x2)
073345  -5 1333  UT4PA DB3MM -01
073415  -7 1333  CQ DB3MM JN59 (x2)
073500  +3 2648  DB3MM LZ2INP KN34
073515  -5 1333  LZ2INP DB3MM -03
073530  +5 2648  DB3MM LZ2INP R-07 (x2)
074945  -8 1333  CQ DB3MM JN59
075045  -7 1333  F6BHK DB3MM RR73

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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