DD9WN — 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: JO41

Receiver-side FT8 activity involving DD9WN, decoded by SO8OO in southeastern Poland. 174 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, 10m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-10-16.

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 174 FT8 messages attributed to DD9WN as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (61%), followed by 40 m (30%) and 60 m (6%). Most decodes (82%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

174
Messages attributed
21
UTC dates decoded
65
Active 15-min windows
-12 dB
Estimated median S/N

Bands

First attributed message: 2026-06-13
Last attributed message: 2026-10-16 21:43 UTC

Observed FT8 message patterns

Attributed sample
174 messages
Active dates
21 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-20 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 49, moderate (-15 to -9 dB) 72, strong (≥ -8 dB) 53.

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 DD9WN

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
JO41 · 145 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
916 km (approx.)
Last such locator decoded
2026-10-16 21:43 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 UTCBandDD9WN S/NCounterpartCounterpart S/NMsgsCapture
10-16 21:04 40m - / -22 5B4AMM -4 / - 3 ✓ Closing fragment
10-05 21:53 40m - / -20 IZ0CLP +8 / - 2 ✓ Closing fragment
10-05 21:50 40m - / - IZ0CLP 0 / - 3 Partial capture
10-05 19:43 40m -6 / - RD7KW - / - 2 Partial capture
10-05 19:34 40m -6 / - IH9YMC - / - 2 Partial capture
10-05 18:56 40m -8 / -6 GM0DYU -10 / - 3 ✓ Closing observed
10-05 02:00 40m -14 / - EK/RX3DPK - / - 2 Partial capture
10-05 00:17 40m -20 / - KP2B - / - 2 Partial capture
10-04 22:06 40m -14 / - YC2BUZ - / - 5 Partial capture
10-04 21:55 40m -11 / - YC2BUZ - / - 3 Partial capture
10-04 00:42 40m - / - 7Z1IS -17 / - 3 Partial capture
10-04 00:06 40m - / -23 HK3ZM -7 / - 3 ✓ Closing fragment
09-27 22:11 40m - / -17 4L7T -14 / - 2 ✓ Closing fragment
09-25 06:21 40m - / -11 SP4MPH 0 / - 2 ✓ Closing fragment
09-25 06:11 40m - / -24 SQ3MQD +2 / - 7 Partial capture
09-25 06:09 40m - / -12 SP9UPH +13 / - 3 ✓ Closing fragment
09-23 02:12 40m - / -21 RA6FC -2 / - 2 ✓ Closing fragment
09-23 02:10 40m - / -10 J48S +1 / - 2 Partial capture
08-30 14:47 20m -9 / - K0MDS - / - 5 Partial capture
08-28 22:15 20m - / -21 T77RN +6 / - 2 Partial capture
08-28 21:43 40m -13 / -12 PC2J +1 / -9 5 ✓ Full exchange observed
08-28 21:39 40m -17 / - EA2DR - / - 2 Partial capture
08-28 20:22 20m -4 / -12 HS0ZOY +1 / +4 3 ✓ Full exchange observed
08-27 23:00 20m -18 / - LU1BGO - / - 2 Partial capture
08-27 22:56 20m -16 / - KT4ZG - / - 4 Partial capture
08-27 22:52 20m -10 / - 8P6GE - / - 2 Partial capture
08-27 22:45 20m -13 / - KB4OIF - / - 2 Partial capture
08-27 21:26 20m -8 / - CX4BAN - / - 3 Partial capture
08-27 21:08 20m -7 / - SV5BYP - / - 3 Partial capture
08-27 20:39 20m 0 / - RI1FJL - / - 2 Partial capture
08-27 20:09 20m -5 / - RI1FJL - / - 3 Partial capture
08-27 17:49 20m -12 / - D2IM - / - 2 Partial capture
08-26 23:44 20m -10 / - KI7SKT - / -8 4 Partial capture
08-26 23:08 20m -20 / - SV5BYP - / - 4 Partial capture
08-26 23:05 20m -13 / -20 AD9GE -10 / +2 5 ✓ Full exchange observed
08-26 23:00 20m -10 / - NR4L - / - 2 ✓ Closing fragment
08-26 22:47 20m -7 / - AD9GE - / - 3 Partial capture
08-26 22:44 20m -8 / - D2UY - / - 2 Partial capture
08-26 22:37 20m -8 / - D2UY - / - 3 Partial capture
08-25 21:44 20m - / -20 LU1FIV 0 / - 3 ✓ Closing fragment
08-25 21:37 20m - / -16 LU1FIV +2 / - 2 ✓ Closing fragment
08-25 19:32 20m - / -15 RA9SBN -1 / - 2 ✓ Closing fragment
08-24 23:34 20m -10 / - KB9ELS - / - 2 Partial capture
08-24 23:29 20m -15 / -21 XQ1KK -2 / - 5 ✓ Closing observed
08-24 23:10 20m -6 / - KB9ELS - / - 3 Partial capture
08-24 23:05 20m -5 / - XE1RK - / - 3 Partial capture
08-24 22:58 20m -10 / - VA3ZK - / -15 4 Partial capture
08-24 22:45 20m -9 / - XQ1KK - / - 2 Partial capture
08-23 20:46 20m -11 / -18 JJ2IJU -8 / - 3 ✓ Closing observed
08-04 03:55 60m -19 / - N8OQ - / -11 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
193545  -7  516  IH9YMC DD9WN JO41
194330  -3  421  RD7KW DD9WN JO41 (x2)
215000  +3 2604  DD9WN IZ0CLP JN61 (x5)
192215  -7  456  HS0ZOY DD9WN JO41
192545  -8 2461  R8LCM DD9WN JO41
195630 -12  458  HS0ZOY DD9WN JO41
210430  -9 1951  DD9WN 5B4AMM -22 (x3)
214315 -24 1739  YD1EQN DD9WN JO41
20m
UTC    dB Audio  Message
202845  -5 2862  KS0CW DD9WN JO41
203300  -5 2482  PY5QW DD9WN JO41
215130  -9  431  A61OK DD9WN JO41
215630 -12  963  LU8VLE DD9WN JO41
215845  -8  963  DD9WN LU8VLE -17
220430 -21 1909  LU8EKC DD9WN JO41
220600 -20 1077  LU6XQB DD9WN JO41
221530  +5  304  DD9WN T77RN -21 (x2)
144715  -7  741  K0MDS DD9WN JO41 (x2)
144845  -8  421  RI1FJL DD9WN JO41
144915 -13  741  K0MDS DD9WN JO41 (x3)
60m
UTC    dB Audio  Message
223300 -10 2029  DD9WN ER3ZW -19
223315 -12 2030  ER3ZW DD9WN R+14
223330 -11 2029  DD9WN ER3ZW RR73
223345 -17 2030  ER3ZW DD9WN 73
223445 -10 2531  CE2SV DD9WN JO41 (x4)
035545 -20 1888  N8OQ DD9WN JO41 (x3)
040545 -11  554  KN4WOJ DD9WN JO41 (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

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