SP3DVO — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

797 messages

Active dates

57 UTC dates

Estimated median S/N

-13 dB

Estimated 10th-90th percentile

-19 to -2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 260, moderate (-15 to -9 dB) 364, strong (≥ -8 dB) 173.

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 SP3DVO 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 SP3DVO

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

JO83 · 168 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

515 km (approx.)

Last such locator decoded

2026-09-21 12:49 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
125415 -13 1276  CQ SP3DVO JO83 (x3)
125615  -8 1276  RT4A/P SP3DVO -10 (x3)
125915 -10 1276  SQ9BDB SP3DVO -13 (x2)
124915  -7 1277  CQ SP3DVO JO83 (x2)
125115 -13 1276  IN3JRZ SP3DVO -07 (x2)
125345  -9 1277  MI5JYK SP3DVO -12 (x3)

UTC    dB Audio  Message
134000  +1 1080  SP3DVO TA1MB R-16 (x3)
134500  -5  842  SP3DVO R1530IG R-13
134745 -15 1925  SP3DVO PD0MNO R-10 (x3)
043345 -17 1686  SP3DVO RM8L -15 (x3)
041430 -15  900  SP3DVO R9FFT R-15 (x2)
123515 -15 2460  SP3DVO UT4QM KN77 (x2)
123715  -3 1475  SP3DVO G0LJV RR73

UTC    dB Audio  Message
110300  +1 2592  SP3DVO PD0HLA -18 (x3)
111145 -10 1593  SP3DVO LZ2CP R-15 (x3)
111315 -10 2555  SP3DVO DN9AD JO52 (x3)
114645  -6 1498  SP3DVO R3LDQ R-03 (x2)
124700 -14 1332  SP3DVO M0BEW +00 (x4)

UTC    dB Audio  Message
034300  +7 2239  CQ SP3DVO JO83
034445  +8 2239  DL6NDN SP3DVO -06 (x3)
034630  +7 1830  SP3DVO DL6NDN R-02 (x2)
034715  -2 2239  DL6NDN SP3DVO R-08 (x3)
033645  +8 2239  CQ SP3DVO JO83 (x3)
033845  +7 2239  DH8KAM SP3DVO -15 (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.