DD3JN — 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: JO31

Receiver-side FT8 activity involving DD3JN, decoded by SO8OO in southeastern Poland. 472 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 28 UTC dates in the available aggregate history. Observed between 2026-07-14 and 2026-11-04.

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 472 FT8 messages attributed to DD3JN as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 80 m (25%) and 20 m (13%). The busiest six-hour window was 13:00-19:00 UTC, containing 44% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.6 dB.

Overview

472
Messages attributed
28
UTC dates decoded
62
Active 15-min windows
-9.6 dB
Estimated median S/N

Bands

First attributed message: 2026-07-14
Last attributed message: 2026-11-04 22:53 UTC

Observed FT8 message patterns

Attributed sample
472 messages
Active dates
28 UTC dates
Estimated median S/N
-9.6 dB
Estimated 10th-90th percentile
-21 to +6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 128, moderate (-15 to -9 dB) 118, strong (≥ -8 dB) 226.

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 DD3JN

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
JO31 · 238 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-11-04 22:51 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 UTCBandDD3JN S/NCounterpartCounterpart S/NMsgsCapture
11-04 22:50 160m +1 / - NB2P - / -24 7 Partial capture
11-04 22:47 160m 0 / - IU5TUD - / -16 2 Partial capture
11-04 22:47 160m - / - DK7ZT +1 / - 5 Partial capture
11-04 22:42 160m -10 / - W8LRL - / -18 9 ✓ Closing fragment
11-04 22:33 80m +3 / - AA4VV - / - 3 Partial capture
11-04 22:30 80m +2 / - BH3FZG - / - 5 Partial capture
11-04 22:30 80m - / - DO9BAU -2 / - 5 Partial capture
11-04 22:26 80m - / - DL9KM -10 / - 7 Partial capture
11-04 22:26 80m - / - DO9BAU -7 / - 3 Partial capture
11-04 22:22 80m +3 / - CT3HQ - / -12 5 ✓ Closing fragment
11-04 22:18 80m - / 0 SP9MOC -2 / - 4 Partial capture
11-04 22:18 80m +9 / - RA9YTI - / - 3 Partial capture
11-04 22:15 80m - / - DO9BAU -6 / - 14 Partial capture
11-04 22:15 80m +2 / - WA2BCK - / -12 5 ✓ Closing fragment
11-04 22:10 80m +6 / - EX7DY - / - 2 ✓ Closing fragment
11-04 22:08 80m 0 / - R8PG - / - 2 Partial capture
11-04 22:08 80m - / - 9A4ZM +10 / - 2 Partial capture
11-04 22:07 80m +3 / -8 EA8UP -9 / - 3 ✓ Closing observed
10-31 22:46 80m +1 / - WA1HXH - / -14 2 Partial capture
10-30 23:29 80m - / - DO9BAU +3 / - 5 Partial capture
10-30 23:28 80m +14 / -12 UN0GY -7 / -10 4 ✓ Full exchange observed
10-30 23:26 80m +18 / - VO1HP -2 / -10 4 ✓ Closing observed
10-30 23:22 80m +1 / -3 5B4AMM +8 / -9 4 Partial capture
10-30 23:12 40m - / - 4X1UF -12 / - 2 ✓ Closing fragment
10-22 15:16 40m -2 / - YL3ASK - / -13 3 ✓ Closing fragment
10-22 15:13 40m -2 / - OH3BYZ - / -13 2 ✓ Closing fragment
10-22 15:11 40m -4 / - YL3ASK - / - 2 Partial capture
10-22 15:10 40m +5 / +6 YU65AEC +6 / -9 3 Partial capture
10-22 15:05 40m +3 / - DV4ZAR - / - 2 Partial capture
10-22 14:59 40m 0 / - MM0HSF - / -11 8 ✓ Closing fragment
10-22 14:57 40m +5 / 0 YL3ASK -7 / - 4 Partial capture
10-22 14:54 40m +2 / -13 SP2MGR/P -3 / -12 4 Partial capture
10-22 14:50 40m +1 / - YD1EQN - / - 4 Partial capture
10-22 14:49 40m +12 / +4 E77D +10 / +3 4 ✓ Full exchange observed
10-22 14:48 40m +8 / -12 ES6DO -4 / -6 4 ✓ Full exchange observed
10-20 10:58 40m - / - DL0HAM -3 / - 5 Partial capture
10-20 10:48 40m - / -2 9A7BB -18 / - 2 Partial capture
10-20 10:45 40m -20 / - M9XPN - / -8 2 Partial capture
10-20 10:43 40m -19 / +8 DL6ZOG -10 / 0 6 ✓ Full exchange observed
10-18 22:01 40m -18 / - BG4UCZ - / - 2 Partial capture
10-17 22:23 80m +6 / - 9H1ES - / -12 5 ✓ Closing fragment
10-17 22:22 80m - / - R2AL +16 / - 3 Partial capture
10-17 22:21 80m +12 / - M7CWF - / -8 3 ✓ Closing fragment
10-17 22:19 80m - / - DL/N0PNG -11 / - 2 Partial capture
10-17 22:19 80m - / - DL9KM -6 / - 7 Partial capture
10-17 22:19 80m - / -8 R2EA/P 0 / - 2 Partial capture
10-17 22:18 80m 0 / - KP4AA - / -14 3 ✓ Closing fragment
10-17 22:14 80m +4 / - DO2HC -1 / -8 3 ✓ Full exchange observed
10-17 22:14 80m - / - 9A4ZM +3 / - 4 Partial capture
10-17 22:13 80m +6 / +3 SQ1EG +7 / +5 5 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m
UTC    dB Audio  Message
224645  -5 1481  W8LRL DD3JN 73
224700  +6 1961  DD3JN DK7ZT JO40 (x2)
224745  +0 1480  IU5TUD DD3JN R-16
224800  -2 1960  DD3JN DK7ZT JO40 (x2)
224845  +1 1551  IU5TUD DD3JN R-16
224900  +0 1960  DD3JN DK7ZT JO40
225000  -4  724  NB2P DD3JN JO31 (x7)
80m
UTC    dB Audio  Message
223000  -6 1902  DD3JN DO9BAU JO62 (x2)
223045  +1 1656  BH3FZG DD3JN JO31
223100  -6 1902  DD3JN DO9BAU JO62
223115  +4 1657  BH3FZG DD3JN JO31
223130  +2 1902  DD3JN DO9BAU JO62
223145  +2 1657  BH3FZG DD3JN JO31
223200  +3 1902  DD3JN DO9BAU JO62
223215  +4 1657  BH3FZG DD3JN JO31 (x2)
223345  +7 1806  AA4VV DD3JN JO31 (x3)
223545  -1 1073  AP5ARS DD3JN JO31 (x2)
40m
UTC    dB Audio  Message
151000  +8 2944  YU65AEC DD3JN JO31
151015  +6 2944  DD3JN YU65AEC +06
151030  +2 2944  YU65AEC DD3JN R-09
151130  -3 2026  YL3ASK DD3JN JO31 (x2)
151330  -2 2231  OH3BYZ DD3JN R-13 (x2)
151630  -3 2026  YL3ASK DD3JN JO31 (x3)
231215 -12  229  DD3JN 4X1UF +17 (x2)
231315 -20 1721  DD3JN RZ4FWA LO23
231545 +11 1186  DD3JN UA4FKT LO23
223700  -5 2690  DD3JN EK/RX3DPK -07
20m
UTC    dB Audio  Message
093130 -21 2353  AC4BV DD3JN JO31
082615  -6 2908  DD3JN OE7MAH -04 (x3)
082900 -15 1177  YO6LM DD3JN RR73
082930 -17 1177  CQ DD3JN JO31 (x3)
083045 +12 1178  DD3JN R2SN -16 (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.

CW

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

Explore CW reception at SO8OO

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