W4IMD — reception at SO8OO

Observed FT8 message patterns

Attributed sample

259 messages

Active dates

7 UTC dates

Estimated median S/N

-14.4 dB

Estimated 10th-90th percentile

-22 to -7 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 116, moderate (-15 to -9 dB) 103, strong (≥ -8 dB) 40.

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 W4IMD 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 W4IMD

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

EM84 · 116 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

8,079 km (approx.)

Last such locator decoded

2026-08-28 08:00 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
080200 -13  901  W4IMD IN3JOZ JN56
080230  +5 1825  W4IMD OE3ASA JN77
080230  -4 3032  W4IMD IW5ALZ JN53
080230  -6 1535  W4IMD IU7MOB R-16 (x2)
080330  -4 1825  W4IMD OE3ASA JN77
080330  -9 1535  W4IMD IU7MOB R-15
080400 -11 1916  W4IMD OE8RPK JN76
080400  -1 1825  W4IMD OE3ASA JN77
080400  -9 1535  W4IMD IU7MOB R-15
080430 -10 1917  W4IMD OE8RPK JN76
080430 -10  897  W4IMD IN3JOZ JN56
080500 -15 1536  W4IMD IU7MOB R-15
080500 -10  896  W4IMD IN3JOZ JN56
080630  -6 1402  W4IMD IZ5MJO 73

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.