DD4DE — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

229 messages

Active dates

9 UTC dates

Estimated median S/N

-5 dB

Estimated 10th-90th percentile

-13 to +4 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 45, strong (≥ -8 dB) 172.

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 DD4DE 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 DD4DE

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

JO54 · 165 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

892 km (approx.)

Last such locator decoded

2026-09-19 14:59 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.

Recent FT8 messages decoded at SO8OO

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

UTC    dB Audio  Message
143715  -3 2735  GB0WVH DD4DE JO54
143730  -9 1223  DD4DE OH3MB +11
143745  +0 2735  OH3MB DD4DE R-12 (x2)
143845 -13 2735  SM7HWD DD4DE JO54 (x2)
144100  -4 2637  G6LTT DD4DE JO54 (x4)
145915 -23 2671  M1JYN DD4DE JO54 (x2)
150015  -1 2671  DL2YCP DD4DE R+13 (x3)

UTC    dB Audio  Message
125200 -20 2517  G4YLJ DD4DE JO54 (x2)
130630  -7 2333  DD4DE RR73; PA2AMJ <...> -10
102445 -13 2427  DD4DE OH6HL +03
102545  -6 2608  DD4DE EB3JT JN01 (x3)
104230 -22 2045  DD4DE EA5PC RR73
105100 -10 2367  DD4DE IQ4JO RR73
105300  -4 1223  DD4DE M5RJR +09 (x2)
094330  -9 2431  SA2CPD DD4DE JO54
094445  +3  684  DD4DE SA2CPD -01 (x3)

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.