DH1KU — reception at SO8OO

Observed FT8 message patterns

Attributed sample

1,841 messages

Active dates

47 UTC dates

Estimated median S/N

-13 dB

Estimated 10th-90th percentile

-20 to -5 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 601, moderate (-15 to -9 dB) 829, strong (≥ -8 dB) 411.

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 DH1KU 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 DH1KU

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

JO30 · 1,333 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,053 km (approx.)

Last such locator decoded

2026-11-01 22:32 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
214330  -9 1905  OD5ZZ DH1KU JO30
214530  -5 1905  MM0ULL DH1KU R-09
214930  -4 1632  OM2WQ DH1KU JO30
215015 +12 1844  DH1KU OM2WQ -03
215030  -1 1633  OM2WQ DH1KU R+01
215045 +13 1844  DH1KU OM2WQ -03
215100  -6 1634  OM2WQ DH1KU R+09
215115 +12 1844  DH1KU OM2WQ RRR (x2)
223115 -11 2053  <AO40EUDXF> DH1KU JO30 (x3)
223230  +6 2544  DH1KU AO40EUDXF -09
223300  +6 2544  DH1KU RR73; EA4CFT <...> +04
223745  +7  879  DH1KU 9A60CBM -14

UTC    dB Audio  Message
203715 +10  535  DH1KU SV2HTW -14
203730 -11 1995  SV2HTW DH1KU R-16
203745  +5  534  DH1KU SV2HTW -14
203800 -16 1995  SV2HTW DH1KU R-10
203815  +8  534  DH1KU SV2HTW -14
203830 -10 1995  SV2HTW DH1KU R-09 (x2)
204015  +9  534  DH1KU SV2HTW RR73
204730 -11 1995  LA2DMA DH1KU JO30 (x4)
205200  -8 1995  SP9DPM/P DH1KU JO30
202030  -8  796  DH1KU HB9ELE -11 (x2)

UTC    dB Audio  Message
174200  +2 2350  YO7VNS DH1KU 73
174900  -4 2132  SV9BMG DH1KU JO30 (x6)
185845 -21 1093  DH1KU TC30AUG -07
190445  -6 1664  SQ8ACE DH1KU JO30 (x2)
191345  -7 1664  E72T DH1KU JO30
191515  -6 2281  SV2KBB DH1KU JO30 (x4)

UTC    dB Audio  Message
091000 -14 2167  9J2FI DH1KU JO30 (x2)
110030 -16 1028  DH1KU EN35UKR -20 (x2)
081200 -12 2267  DH1KU IW8PQ -05 (x5)

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.