SP9YGD — reception at SO8OO

Observed FT8 message patterns

Attributed sample

3,013 messages

Active dates

8 UTC dates

Estimated median S/N

+5.6 dB

Estimated 10th-90th percentile

-12.1 to +15 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 184, moderate (-15 to -9 dB) 376, strong (≥ -8 dB) 2,453.

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 SP9YGD 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 SP9YGD

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

JO90 · 1,648 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

208 km (approx.)

Last such locator decoded

2026-09-02 05:36 UTC

Other locator fields attributed to this token: JO73 (312).

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
052915 +20 2954  SP9YGD SP7FFY -20 (x3)
053130  +9 1512  DH1JG SP9YGD JO90
053215 -16 1512  SP9YGD DH1JG -10
053230 +10 1512  DH1JG SP9YGD R-15
053245 -12 1512  SP9YGD DH1JG RR73
053300  +8 1512  DH1JG SP9YGD 73
053330 +13  946  IN3OWY SP9YGD JO90 (x3)
053515 +11 2189  SV1DKR SP9YGD JO90 (x4)

UTC    dB Audio  Message
032130 -23 2121  CQ SP9YGD JO90
032245  -7 1672  SP9YGD SV1DKR KM18
033245 -21 2122  SP9YGD RA6ZD 73
033300 -20 2122  CQ SP9YGD JO90 (x2)
033545 -12 1622  SP9YGD OH1LA KP01 (x7)
035315 -10  447  SP9YGD HK3J -18 (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.