DB4PK — 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: JO50

Receiver-side FT8 activity involving DB4PK, decoded by SO8OO in southeastern Poland. 190 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-01.

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 190 FT8 messages attributed to DB4PK as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (83%), followed by 10 m (11%) and 20 m (6%). Several six-hour UTC windows tied for the largest share (33%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

190
Messages attributed
26
UTC dates decoded
41
Active 15-min windows
-13 dB
Estimated median S/N

Bands

40m · 158 20m · 12 10m · 20
First attributed message: 2026-06-10
Last attributed message: 2026-10-01 14:33 UTC

Observed FT8 message patterns

Attributed sample
190 messages
Active dates
26 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-22 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 80, moderate (-15 to -9 dB) 66, strong (≥ -8 dB) 44.

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 DB4PK 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 DB4PK

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
JO50 · 141 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
770 km (approx.)
Last such locator decoded
2026-10-01 14:32 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 UTCBandDB4PK S/NCounterpartCounterpart S/NMsgsCapture
10-04 15:09 10m - / -13 4Z5ML -2 / - 3 ✓ Closing fragment
10-01 14:32 40m -11 / - F4IFC - / -2 3 ✓ Closing fragment
09-30 14:02 40m -21 / - 9A5MP -20 / -17 4 ✓ Closing observed
09-27 07:45 40m -15 / - G7IGC - / -13 9 ✓ Closing fragment
09-23 08:33 40m -20 / +2 DG3YEV +9 / - 6 ✓ Closing observed
09-23 08:29 40m -20 / - S55X - / - 4 Partial capture
09-22 09:21 40m -22 / - GJ0KYZ - / -10 2 Partial capture
09-22 09:20 40m - / -9 IK2UIG -23 / - 2 Partial capture
09-22 09:18 40m -22 / - ON4CJU - / - 2 ✓ Closing fragment
08-31 16:36 40m -15 / - R3PJV - / - 6 Partial capture
08-26 17:40 40m -11 / - <...> - / -17 6 Partial capture
08-25 14:48 40m -21 / -7 OZ9FF +2 / - 5 ✓ Full exchange observed
08-22 09:16 40m - / - DG4LXM -16 / - 2 Partial capture
08-22 09:13 40m -21 / -12 F1PBZ -22 / +1 2 Partial capture
08-22 09:06 40m -23 / - 2E0GKF - / - 4 Partial capture
08-22 09:02 40m - / - DK2SW -9 / - 24 Partial capture
08-21 15:25 10m -9 / - SQ8AA - / - 3 Partial capture
08-21 15:20 10m -15 / - SP4MPH - / 0 3 ✓ Closing fragment
08-20 15:26 40m -10 / -6 S56LKP +2 / -2 5 ✓ Full exchange observed
08-20 15:24 40m -14 / +1 HA3GO -7 / +8 5 ✓ Full exchange observed
08-16 09:49 20m - / - EB3JT -18 / - 5 Partial capture
08-08 10:13 20m -22 / - 9A3AUH - / -16 3 ✓ Closing fragment
08-08 10:04 20m -18 / - TA2ANK - / - 2 Partial capture
08-08 09:55 20m -18 / - R6DZR - / -7 2 Partial capture
08-03 15:24 40m - / -10 EW8G -19 / - 3 Partial capture
08-02 15:31 40m - / - OK5AG/P -20 / - 2 ✓ Closing fragment
08-02 15:18 40m - / +4 DM8KM -4 / - 2 ✓ Closing fragment
08-01 00:44 40m -10 / - K4DND - / - 5 Partial capture
08-01 00:24 40m -10 / - WV2B - / - 10 Partial capture
07-29 08:26 20m - / -17 RA3Y -9 / - 3 Partial capture
07-28 02:03 40m -22 / - AA4NP - / - 3 Partial capture
07-27 16:17 40m -24 / - G1ABR - / - 2 Partial capture
07-26 15:16 40m - / +6 9A3PV -17 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
152030 -17 1780  SP4MPH DB4PK JO50 (x3)
152515 -12 1777  SQ8AA DB4PK JO50 (x3)
150915  -2 2712  DB4PK 4Z5ML -13 (x3)
40m 
UTC    dB Audio  Message
074530 -15 1740  G7IGC DB4PK JO50 (x8)
140245 -20 1747  9A5MP DB4PK JO50 (x2)
140430 -20 1043  DB4PK 9A5MP RR73
140445 -20 1751  9A5MP DB4PK 73
143200  -8 1737  F4IFC DB4PK JO50 (x3)
20m 
UTC    dB Audio  Message
082645 -11  958  DB4PK RA3Y -17 (x3)
095545 -18 1791  R6DZR DB4PK JO50 (x2)
100415 -19 1790  TA2ANK DB4PK JO50 (x2)
101345 -23 1793  9A3AUH DB4PK JO50 (x3)
094900 -17 1770  DB4PK EB3JT JN01 (x5)

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee