HA1DBO — reception at SO8OO

Observed FT8 message patterns

Attributed sample

259 messages

Active dates

15 UTC dates

Estimated median S/N

+3 dB

Estimated 10th-90th percentile

-10 to +8 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 221.

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 HA1DBO 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 HA1DBO

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

JN87 · 133 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

444 km (approx.)

Last such locator decoded

2026-10-22 17:00 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
165130  -4  695  HA1DBO F6BHK JN24
165145  -6  694  IZ2SPX HA1DBO -06 (x2)
165400  -6  664  HA1DBO IZ2SPX R-12 (x2)
165630  -2  695  JA3XRO HA1DBO JN87
165815 +11  695  PD4RJ HA1DBO JN87 (x2)
165900 -21 1409  HA1DBO PD4RJ RRR
165915  +2  695  PD4RJ HA1DBO 73
170015  -3  694  ON3CL HA1DBO JN87
164415 -10  910  HA1DBO DL3ND JN57 (x4)

UTC    dB Audio  Message
095945  +0  769  HA1DBO IK1MJK/P -01 (x2)
100215 -14 1222  HA1DBO EA3AKY -06 (x2)
094745  -8 1454  HA1DBO F5JUS RR73
154345  +4  717  HA1DBO CR7BRV IM58 (x5)

UTC    dB Audio  Message
114215  +3  272  HA1DBO RX9ABI -12 (x2)
114245  -5 1375  HA1DBO EB3JT JN01
114315  +4  271  HA1DBO RX9ABI -12
114315  -9 1375  HA1DBO EB3JT R-10
114345  +3  271  HA1DBO RX9ABI -12
114345 -12 1375  HA1DBO EB3JT 73
114445 +10  583  HA1DBO F4HTA -12 (x2)
114815  -5  272  HA1DBO RX9ABI -12 (x2)
114915 -13 1375  HA1DBO G0CLH +03 (x3)
115245  -4 1195  HA1DBO PD0ACM JO21

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.