N5DD — 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: United States Most frequent locator attributed to this token: EM11

Receiver-side FT8 activity involving N5DD, decoded by SO8OO in southeastern Poland. 55 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-04.

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 55 FT8 messages attributed to N5DD as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (87%), followed by 80 m (11%) and 40 m (2%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (60%); the estimated median was -14 dB.

Overview

55
Messages attributed
6
UTC dates decoded
17
Active 15-min windows
-14 dB
Estimated median S/N

Bands

First attributed message: 2026-06-08
Last attributed message: 2026-10-04 01:35 UTC

Observed FT8 message patterns

Attributed sample
55 messages
Active dates
6 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-19 to -9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 33, strong (≥ -8 dB) 3.

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.

Most frequent locator attributed to N5DD

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
EM11 · 32 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
9,141 km (approx.)
Last such locator decoded
2026-10-01 02:27 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 UTCBandN5DD S/NCounterpartCounterpart S/NMsgsCapture
11-04 03:42 60m - / -16 G4ATX -4 / - 2 ✓ Closing fragment
11-04 03:24 60m - / -16 F5RMK -8 / - 2 ✓ Closing fragment
11-01 00:41 80m - / - IU0VYT +4 / - 3 Partial capture
10-29 02:37 40m - / -12 CT7BRV -10 / - 2 ✓ Closing fragment
10-28 02:56 80m - / - UX5UO +14 / - 4 Partial capture
10-27 03:04 40m - / - F5MXH +6 / - 2 Partial capture
10-26 00:51 80m - / -8 4O4A +14 / - 5 Partial capture
10-25 02:50 80m - / - IK5CHL +11 / - 2 Partial capture
10-15 01:53 40m - / -9 HB9TIH -12 / - 6 Partial capture
10-11 00:21 80m - / -19 F4BPO +10 / - 7 ✓ Closing fragment
10-10 23:59 80m - / -17 CT7AUT -10 / - 2 ✓ Closing fragment
10-04 02:04 80m - / - DO4DXA +14 / - 4 Partial capture
10-04 01:59 80m - / - F5RAV +1 / - 5 Partial capture
10-04 01:58 80m - / -13 EC5M +1 / - 2 ✓ Closing fragment
10-04 01:35 80m - / - UX5UO +20 / - 4 Partial capture
10-02 03:13 40m - / - RX6LHY -12 / - 6 Partial capture
10-02 03:12 40m - / -18 RZ6L -3 / - 4 Partial capture
10-02 03:09 40m - / - SV1MOZ -16 / - 2 Partial capture
10-02 00:53 40m - / -18 G3TKT -2 / - 2 Partial capture
10-01 03:16 80m -17 / - PI4DX - / -22 2 Partial capture
10-01 03:14 80m - / - DK5WL +4 / - 3 Partial capture
10-01 03:00 80m - / - G1CEC -12 / - 6 Partial capture
10-01 02:56 80m - / - G1CEC -9 / - 4 Partial capture
09-30 02:50 80m - / -12 IZ8VYU -7 / - 2 ✓ Closing fragment
09-30 02:48 80m - / - DK5WL -4 / - 3 Partial capture
09-25 02:05 40m - / -6 SV3AUW -14 / - 2 ✓ Closing fragment
09-25 01:59 80m - / - G3YPD -22 / - 2 Partial capture
08-12 02:33 40m - / -26 R2EC -6 / - 2 Partial capture
08-12 02:31 40m - / -8 YO6LM -9 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m
UTC    dB Audio  Message
032445 -10 2036  N5DD F5RMK -16 (x2)
034215  -6  937  N5DD G4ATX -16 (x2)
80m
UTC    dB Audio  Message
002445  +5 1561  N5DD F4BPO 73
025030  +9 1984  N5DD IK5CHL JN53 (x2)
005130 +14 2529  N5DD 4O4A -08 (x5)
025615 +13  756  N5DD UX5UO KO50 (x4)
004145  +3 2133  N5DD IU0VYT JN61 (x3)
40m
UTC    dB Audio  Message
031630 -15 1510  N5DD RX6LHY LN07 (x2)
031800  -8  939  N5DD IU8RFW JN70
015330 -16 1167  N5DD HB9TIH R-09 (x6)
030000  +2 2674  N5DD P4/WE9V +00
030430  +4 2745  N5DD F5MXH JN07 (x2)
023715  -9 2057  N5DD CT7BRV -12 (x2)
033630 -15 1617  N5DD EA4D -04

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