OK7TB — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,932 messages

Active dates

45 UTC dates

Estimated median S/N

-2.8 dB

Estimated 10th-90th percentile

-13 to +12.4 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 84, moderate (-15 to -9 dB) 359, strong (≥ -8 dB) 1,489.

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 OK7TB 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 OK7TB

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

JN79 · 1,125 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

491 km (approx.)

Last such locator decoded

2026-10-01 17:49 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
173015 +15  860  IQ0YA OK7TB JN79 (x2)
173100  +6  860  OK7TB IQ0YA -04
173115 +11  860  IQ0YA OK7TB R+03
173130  +1  860  OK7TB IQ0YA RR73
173145 +15  860  IQ0YA OK7TB 73
173230 +14  381  OK7TB DO1ID +19 (x2)
174630 +11  861  OH1LEG OK7TB JN79 (x7)

UTC    dB Audio  Message
221930  -4 2121  OK7TB G5NGL +09 (x2)
222630  -8  506  OK7TB EI6HIB +00 (x2)
223230 -11 2502  OK7TB AA3B -08 (x2)
224500 -24 1729  OK7TB GM6URC -02 (x3)
224700 -23 1261  OK7TB EC3A -09 (x2)
231300  -8 2027  OK7TB RZ4FWA LO23 (x4)

UTC    dB Audio  Message
154215 -12 1023  GM3AND OK7TB JN79 (x6)
065415 -15  877  OK7TB ON7IO +26 (x2)
065515  -5 1883  OK7TB DN9SGE JO42 (x5)
123930 -24 1702  OK7TB EX7CQ -04 (x2)

UTC    dB Audio  Message
081830  +4 1581  CQ DX OK7TB JN79
081900  +3 1581  VK5LSD OK7TB JN79 (x2)
081945  -7 1199  OK7TB PD0ACM JO21
082000  +3 1581  VK5LSD OK7TB JN79
082015 -11 1199  OK7TB PD0ACM JO21
082100  -4 1581  PD0ACM OK7TB +05
082115  -9 1199  OK7TB PD0ACM R+12
082130  -1 1581  PD0ACM OK7TB RR73
082145 -13 1199  OK7TB PD0ACM 73
082215  -3 1582  PD2XX OK7TB JN79
082230  -1 1820  OK7TB PD2XX -01
082245  -1 1581  PD2XX OK7TB R-01
082300  +1 1820  OK7TB PD2XX RR73
082700  +5 1582  VK5LSD OK7TB R-23

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.