DO8SD — 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: JO53

Receiver-side FT8 activity involving DO8SD, decoded by SO8OO in southeastern Poland. 269 FT8 messages attributed to this token as transmitter, on 80m, 10m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-10.

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 269 FT8 messages attributed to DO8SD as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (56%), followed by 10 m (44%). Most decodes (65%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (81%); the estimated median was 0 dB.

Overview

269
Messages attributed
15
UTC dates decoded
30
Active 15-min windows
0 dB
Estimated median S/N

Bands

80m · 150 10m · 119
First attributed message: 2026-06-10
Last attributed message: 2026-10-10 17:59 UTC

Observed FT8 message patterns

Attributed sample
269 messages
Active dates
15 UTC dates
Estimated median S/N
0 dB
Estimated 10th-90th percentile
-16 to +10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 217.

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 DO8SD 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 DO8SD

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
JO53 · 140 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
841 km (approx.)
Last such locator decoded
2026-10-10 17:57 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 UTCBandDO8SD S/NCounterpartCounterpart S/NMsgsCapture
10-18 12:17 10m - / - CT2HEX -13 / - 3 ✓ Closing fragment
10-10 18:00 80m - / -9 PA0MUS 0 / - 4 ✓ Closing fragment
10-10 17:57 80m 0 / -4 9A7KWS -9 / -2 6 ✓ Full exchange observed
10-10 17:54 80m -2 / -9 EW2ZC +15 / - 6 ✓ Closing observed
10-10 17:22 80m -5 / -5 M0EBM -17 / +1 4 ✓ Full exchange observed
10-10 17:20 80m +5 / - DO2DLE -17 / -1 3 ✓ Closing observed
10-10 17:18 80m +3 / -14 OM3PC +14 / +6 5 ✓ Full exchange observed
10-10 17:16 80m +4 / -10 HA8ZG +8 / +1 5 ✓ Full exchange observed
10-10 17:15 80m +3 / -4 R7CD -9 / -4 5 ✓ Full exchange observed
10-10 17:14 80m - / -4 F1PBZ -6 / - 2 Partial capture
10-10 17:12 80m 0 / -6 DB2GM -16 / -7 5 ✓ Full exchange observed
10-10 17:11 80m +6 / -17 RK4UZ -18 / -8 3 ✓ Full exchange observed
10-10 17:10 80m +4 / -12 UR5LAK -10 / -9 5 ✓ Full exchange observed
10-10 17:07 80m +6 / - ON4CAS - / -1 3 ✓ Closing fragment
10-10 15:57 80m +6 / - YL3GED - / +4 2 Partial capture
10-10 15:55 80m +6 / - DO5RBB -10 / - 5 ✓ Closing observed
10-10 15:54 80m +9 / - PA3GDY -2 / - 5 ✓ Full exchange observed
10-04 13:45 10m - / +3 CR7BRV -3 / - 2 ✓ Closing fragment
09-03 17:51 80m -1 / - EU1DC +17 / - 3 ✓ Closing observed
09-03 17:50 80m 0 / -1 OZ7CL -10 / - 4 ✓ Full exchange observed
09-03 17:48 80m +3 / - 5P5Z +3 / - 3 Partial capture
09-03 17:46 80m -9 / +1 UA3SCU +4 / - 5 ✓ Full exchange observed
09-03 17:46 80m -12 / -16 UR4LG -7 / -22 5 ✓ Full exchange observed
08-29 18:00 80m +8 / -1 DO2SHX -14 / +7 5 ✓ Full exchange observed
08-29 17:59 80m +6 / - OH2BVT - / - 2 Partial capture
08-29 17:56 80m +7 / -1 HA7JDU +2 / -7 6 ✓ Full exchange observed
08-29 17:42 80m +2 / -11 UR5KC +12 / -4 3 ✓ Full exchange observed
08-29 17:41 80m +1 / +2 5P1KZX -2 / - 5 ✓ Full exchange observed
08-29 17:10 80m 0 / -7 E70SZ -7 / -1 5 ✓ Full exchange observed
08-29 17:09 80m -2 / - DA6IT - / -9 2 ✓ Closing fragment
08-29 17:08 80m +2 / -12 SP1ZMO -1 / +5 4 ✓ Full exchange observed
08-29 17:07 80m -4 / - F1BOW -12 / -6 3 ✓ Closing observed
08-23 18:41 80m +15 / -1 EW8AAC -12 / -2 5 ✓ Full exchange observed
08-23 18:39 80m +12 / - DO1OSW 0 / - 5 ✓ Full exchange observed
08-23 18:36 80m +10 / - DL7GW +4 / +6 5 ✓ Full exchange observed
08-23 18:35 80m +2 / - DO4TIM -16 / +2 5 ✓ Full exchange observed
08-22 11:10 10m - / +2 IV3VFP -18 / - 4 ✓ Closing fragment
08-22 10:49 10m - / - IK4LZH +7 / - 4 Partial capture
08-22 10:23 10m - / -7 IK4IDY -13 / - 2 ✓ Closing fragment
08-22 10:00 10m - / - IK4LZH +4 / - 4 Partial capture
08-22 09:59 10m - / +2 I4BMJ -18 / - 4 ✓ Closing fragment
08-22 09:53 10m - / - IK4LZH -1 / - 2 Partial capture
08-19 08:43 10m - / -2 F4LHL -18 / - 2 ✓ Closing fragment
08-19 07:21 10m - / +10 DF4OR -12 / - 2 ✓ Closing fragment
08-19 07:16 10m - / -14 DN9JGL -14 / - 2 ✓ Closing fragment
08-19 07:14 10m - / -14 DN9DSP -12 / - 2 ✓ Closing fragment
08-19 07:03 10m - / +4 DN9CHV -7 / - 2 ✓ Closing fragment
08-19 06:46 10m - / +10 ON7IO -17 / - 2 ✓ Closing fragment
08-19 06:45 10m -17 / - HA7UL - / - 3 ✓ Closing fragment
08-18 10:56 10m -5 / - SP9VRY - / -11 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
102330 -13 1859  DO8SD IK4IDY RR73
104915  +7  493  DO8SD IK4LZH JN54 (x4)
111045 -21 1587  DO8SD IV3VFP +02 (x4)
134500  -6  787  DO8SD CR7BRV +03 (x2)
092400  +4  751  DO8SD EA7R -02
121745 -12 1258  DO8SD CT2HEX IM58 (x3)
80m 
UTC    dB Audio  Message
175500 +14 2104  DO8SD EW2ZC -09 (x4)
175645  -5 2104  EW2ZC DO8SD 73
175715  +1 1734  9A7KWS DO8SD JO53
175730 -12 1585  DO8SD 9A7KWS -04
175745  -2 1734  9A7KWS DO8SD R-02
175800  -7 1585  DO8SD 9A7KWS RR73 (x2)
175945  +0 1735  9A7KWS DO8SD 73
180030  -4 2782  DO8SD PA0MUS JO22 (x4)
20m 
UTC    dB Audio  Message
081945 -11 2478  DO8SD F1PBZ -05

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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