SP7X — reception at SO8OO

Observed FT8 message patterns

Attributed sample

295 messages

Active dates

4 UTC dates

Estimated median S/N

-11 dB

Estimated 10th-90th percentile

-17 to -2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 51, moderate (-15 to -9 dB) 150, strong (≥ -8 dB) 94.

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 SP7X 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 SP7X

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

JO92 · 190 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

345 km (approx.)

Last such locator decoded

2026-09-08 04:04 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
041800  -1 1050  SP7X UB3KGW -19 (x5)
042530  -5 1168  SP7X R2PX KO93 (x4)
043130 -12 1857  SP7X R3WF -16 (x3)
043530  +5 1067  SP7X RC5F KO85 (x3)

UTC    dB Audio  Message
035400  -1  825  SP7X OE5DML R-18 (x2)
035745  +1  824  <HF100PKP> SP7X R-04
035815  -4  824  CQ SP7X JO92                          a1
040030  -4 2503  SP7X F1PBZ -19 (x2)
040100 -10 1853  SP7X DL8TV JN49
040130 -15  825  YU7AS SP7X JO92
040130  -1 2503  SP7X F1PBZ -19
040130  -8 1853  SP7X DL8TV JN49 (x2)
040200 -12  826  CQ SP7X JO92
040300  +3  825  YU7AS SP7X JO92
040330  +3  825  CQ SP7X JO92 (x2)

UTC    dB Audio  Message
082730 -12  657  SP7X RA9DF/M -13

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.