DO1FDK — reception at SO8OO

Observed FT8 message patterns

Attributed sample

3,506 messages

Active dates

43 UTC dates

Estimated median S/N

-3.1 dB

Estimated 10th-90th percentile

-13.3 to +4 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 163, moderate (-15 to -9 dB) 737, strong (≥ -8 dB) 2,606.

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 DO1FDK 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 DO1FDK

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

JO41 · 3,232 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

916 km (approx.)

Last such locator decoded

2026-10-24 17:09 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
101700  -9 1148  DO1FDK IT9LKX -22 (x2)
102345  -4 2954  SP5TL DO1FDK JO41
114045  -3 2952  DO1FDK IW1PPB -10 (x2)
152115  -6 2951  MM1JWF DO1FDK R-10 (x4)
200130  -2 2950  PP5JP DO1FDK JO41 (x3)
140330  -6 2953  2M0AKI DO1FDK JO41
125515 -10 1148  DO1FDK CR7BSX -03 (x2)

UTC    dB Audio  Message
170230 -17 2452  OH8JP DO1FDK JO41
170245  +1  442  DO1FDK SM5VSS -16
170300 -18 2452  SM5VSS DO1FDK R-13
170315  +7  442  DO1FDK SM5VSS RR73
170430 -16 2453  OH8JP DO1FDK JO41 (x3)
170545  +2 1372  DO1FDK OH8JP -24
170600 -23 2453  OH8JP DO1FDK R-12
170615  +0 1372  DO1FDK OH8JP RR73
170630 -20 2453  OH8JP DO1FDK 73
170700 -16 2452  F4NRM DO1FDK JO41 (x3)
170930 -18 2453  SM7WNM DO1FDK JO41

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.