OT7K — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,614 messages

Active dates

7 UTC dates

Estimated median S/N

+7 dB

Estimated 10th-90th percentile

+1 to +13 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 32, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 1,569.

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 OT7K 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 OT7K

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

JO21 · 636 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,192 km (approx.)

Last such locator decoded

2026-09-19 21:29 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
212415  +8 2133  F4MJX OT7K RR73
212430  -8 2133  OT7K IU4PPL JN54
212445 +13 2133  CQ OT7K JO21
212500  -7 2133  OT7K IU4PPL JN54
212515  +8 2133  IU4PPL OT7K -03 (x2)
212615 +12 2133  CQ OT7K JO21 (x5)
212915 +13 2133  EX7CQ OT7K JO21
212930  +4 1715  OT7K EX7CQ +07
212945 +13 2133  EX7CQ OT7K R-07 (x2)

UTC    dB Audio  Message
192115 +11 2735  RI1FJZ OT7K JO21 (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.