DB3MAX — 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: JO64

Receiver-side FT8 activity involving DB3MAX, decoded by SO8OO in southeastern Poland. 731 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-20 and 2026-09-20.

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 731 FT8 messages attributed to DB3MAX as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Most decodes (57%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -4 dB.

Overview

731
Messages attributed
3
UTC dates decoded
63
Active 15-min windows
-4 dB
Estimated median S/N

Bands

First attributed message: 2026-08-20
Last attributed message: 2026-09-20 06:30 UTC

Observed FT8 message patterns

Attributed sample
731 messages
Active dates
3 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-15 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 58, moderate (-15 to -9 dB) 146, strong (≥ -8 dB) 527.

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.

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 DB3MAX

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
JO64 · 435 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
784 km (approx.)
Last such locator decoded
2026-09-20 06:30 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 UTCBandDB3MAX S/NCounterpartCounterpart S/NMsgsCapture
08-21 12:03 40m - / +7 DM2BR -18 / - 3 ✓ Closing fragment
08-21 10:44 40m - / +1 SP2L -2 / - 2 ✓ Closing fragment
08-21 09:24 40m - / +4 DL6KBV -8 / - 2 Partial capture
08-21 09:20 40m -10 / -6 F6BEC -11 / -6 4 ✓ Full exchange observed
08-21 09:18 40m -4 / - DM2DS/P - / - 3 Partial capture
08-21 09:04 40m - / 0 PD0HLA -5 / - 5 ✓ Closing fragment
08-21 09:01 40m -6 / - IW3HKL - / - 2 Partial capture
08-21 08:55 40m -17 / -9 PD4HT -17 / - 2 ✓ Closing observed
08-21 08:42 40m -10 / - SM5MEK - / - 2 ✓ Closing fragment
08-21 08:34 40m - / -9 SP4GDW -15 / - 7 Partial capture
08-21 08:13 40m -21 / -1 UT4PA -6 / - 3 Partial capture
08-21 07:56 40m - / -7 DL2ZM -5 / - 2 ✓ Closing fragment
08-21 07:42 40m - / - DK9IP +10 / - 3 ✓ Closing fragment
08-21 07:31 40m - / +1 OE1NAC -9 / - 3 ✓ Closing fragment
08-21 07:26 40m -14 / - DL3RSK - / -16 3 Partial capture
08-21 07:20 40m -16 / -2 OE5PEN -8 / - 4 ✓ Full exchange observed
08-21 07:18 40m -18 / -16 SQ9SET +6 / -16 4 ✓ Full exchange observed
08-21 06:42 40m -22 / - F1NQP -18 / +2 2 ✓ Closing observed
08-21 06:32 40m -24 / - SQ7NHR - / - 2 Partial capture
08-21 06:23 40m - / -2 9A2DM -5 / - 2 ✓ Closing fragment
08-21 06:17 40m -12 / -9 SP3BPU +10 / -9 4 ✓ Full exchange observed
08-21 06:15 40m -20 / -10 UZ5CA -8 / -7 4 ✓ Full exchange observed
08-21 06:11 40m 0 / - ON3ANY - / - 2 Partial capture
08-21 06:09 40m -15 / +8 LY7M -8 / - 5 ✓ Full exchange observed
08-21 06:08 40m -4 / -14 E79KO -8 / -16 4 ✓ Full exchange observed
08-21 06:02 40m -4 / - F1JUM - / -14 5 Partial capture
08-21 06:00 40m -4 / - HB9CIC - / +6 3 ✓ Closing fragment
08-21 05:58 40m +4 / - DL8OH - / - 2 Partial capture
08-21 05:55 40m - / +3 YL3GAO -1 / - 2 ✓ Closing fragment
08-21 05:52 40m -3 / - F4AAS/P - / -2 4 ✓ Closing fragment
08-21 05:51 40m -4 / - OO0O - / -2 2 ✓ Closing fragment
08-21 05:50 40m -4 / - SQ9CXH - / - 2 Partial capture
08-21 05:47 40m -1 / - F4JJA -22 / -12 4 ✓ Closing observed
08-21 05:45 40m -2 / - G1CSO - / - 4 Partial capture
08-21 05:43 40m -3 / - SQ9KWY - / -1 3 ✓ Closing fragment
08-21 05:41 40m -6 / -15 F4EXC -16 / +7 5 ✓ Full exchange observed
08-21 05:40 40m -6 / - SQ8V - / -6 3 ✓ Closing fragment
08-21 05:37 40m -4 / - M0KDZ - / - 2 Partial capture
08-21 05:35 40m 0 / +10 F5LRU -14 / +4 6 ✓ Full exchange observed
08-21 05:33 40m -5 / +6 G0LUH -16 / +9 7 ✓ Full exchange observed
08-21 05:33 40m - / -10 YO6LM +7 / - 3 Partial capture
08-21 05:32 40m +5 / +1 SP8MO -10 / - 4 ✓ Closing observed
08-21 05:04 40m 0 / - IK2PZX - / - 2 ✓ Closing fragment
08-21 05:01 40m +1 / - YO3GNF -3 / -7 6 ✓ Closing observed
08-21 04:59 40m +1 / - <...> - / -14 4 Partial capture
08-21 04:57 40m -8 / - SP7IIT - / - 4 Partial capture
08-21 04:55 40m - / -7 YO6LM +6 / - 2 Partial capture
08-21 04:53 40m -13 / - F4ELU - / -2 4 ✓ Closing fragment
08-21 04:50 40m -16 / -11 IK2OLD +4 / -10 5 ✓ Full exchange observed
08-21 04:43 40m -18 / -16 UT3UW +4 / - 5 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
092430  -8  891  DB3MAX DL6KBV +04 (x2)
094100 -16 2289  DB3MAX DG0KS RR73
094300 -21 1451  DB3MAX DL7UVO RR73
104430  -3  429  DB3MAX SP2L +01 (x2)
110045  -8 2677  DK1AUP DB3MAX JO64
111930 -23 1890  DB3MAX DL2USR -12
114030 -18 1290  DB3MAX DG0AM RR73
120300 -18 1856  DB3MAX DM2BR +07 (x3)
125030 -13 2196  DB3MAX DL2HUC -06
063045  -2 1477  CQ DB3MAX JO64
194000 -17 1476  DB3MAX R4FEO 73

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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