HA7DA — reception at SO8OO

Observed FT8 message patterns

Attributed sample

200 messages

Active dates

18 UTC dates

Estimated median S/N

+1 dB

Estimated 10th-90th percentile

-13 to +8 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 28, strong (≥ -8 dB) 166.

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 HA7DA 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 HA7DA

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

KN07 · 88 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

277 km (approx.)

Last such locator decoded

2026-10-15 18:17 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
175115  +0 1853  HA7DA RA2FCF KO04
175130  -4 1359  RA2FCF HA7DA -02
175145  -2 1853  HA7DA RA2FCF R-12
175200  -2 1359  RA2FCF HA7DA RR73
175215  -1 1853  HA7DA RA2FCF 73
181600  +1 1358  CQ HA7DA KN07 (x3)
181730  +1 1358  OH3MB HA7DA -01 (x2)
181815  +1 1358  HA7DA OH3MB R-02
181930  -1 1358  SP4WJ HA7DA -10 (x4)

UTC    dB Audio  Message
181300 -12 2250  R3DQK HA7DA -17 (x2)
181415  -9  237  HA7DA RX9ABI MO05 (x3)
181745  -5  796  HA7DA F1IQH JN27 (x3)
182030  -6 1280  F1IQH HA7DA RR73
182045  -8  796  HA7DA F1IQH 73
190130  -4 2311  HA7DA OZ1SMB JO54 (x3)
191000 -19 1497  HA7DA R2DDN 73
191230  +0 2806  HA7DA RR73; GI0VAB <...> -16

UTC    dB Audio  Message
180230  -5 2808  EU4U HA7DA KN07 (x3)
180415  +3 1810  EA8CVR HA7DA KN07 (x2)
180530 -15 1810  HA7DA EA8CVR -11
180700  +0 2507  PD5MVH HA7DA KN07 (x3)
180900  +9 2886  JN1ILK HA7DA KN07
180915  +3 2887  HA7DA JN1ILK -13
180930 +11 2886  JN1ILK HA7DA R-02
180945  +2 2887  HA7DA JN1ILK RR73
181000  -2 2886  JN1ILK HA7DA 73
181030  -4 2977  JG3LGD HA7DA KN07

UTC    dB Audio  Message
112000 -13 1942  HA7DA F4VTR R-09 (x2)
112200 -20 1941  HA7DA DD5GG JN39 (x2)
112630  -8 1942  HA7DA DG2SAT JN48 (x3)
114200 -14 1143  HA7DA E70SZ JN84 (x3)
114330 -18 1143  HA7DA RN6MA -16
114800 -15 1324  HA7DA DF2UF JN49 (x4)

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.