A61CK — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

6,938 messages

Active dates

41 UTC dates

Estimated median S/N

-10 dB

Estimated 10th-90th percentile

-15 to +3 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 566, moderate (-15 to -9 dB) 3,365, strong (≥ -8 dB) 3,007.

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 A61CK 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 A61CK

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

LL75 · 5,572 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

3,932 km (approx.)

Last such locator decoded

2026-08-16 05:38 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
053215 -15  870  CQ A61CK LL75 (x4)
053615 -14  869  R2GBR A61CK R-03
053715 -15  869  CQ A61CK LL75 (x3)
054000 -24 1760  A61CK HB9TIH JN36 (x7)

UTC    dB Audio  Message
193330 -21 1850  A61CK G8OO JO02
193330  -1 1548  A61CK ON6LEO -17 (x2)
193400 -23 1850  A61CK G8OO JO02
193430  +1 1548  A61CK ON6LEO -17
193430 -20 1850  A61CK G8OO JO02 (x3)
195930  -2  997  A61CK UT2PC KO21 (x4)
204330 -22 1382  A61CK EA3AKY JN01
204630  -4  832  A61CK RW3SK -15 (x2)

UTC    dB Audio  Message
203000  -3  929  A61CK DL1HDL -05
185300 -22 1362  A61CK OZ1EDR JO65
225400  -9 2383  A61CK M1WLK -24
231030  -9 1453  A61CK CT7AUT IM67
191600  +2  981  A61CK SP3IPA JO82 (x5)
190500  -3 1361  A61CK OZ1EDR JO65 (x4)
220100 -14 2503  A61CK OH4LBX KP31 (x2)

UTC    dB Audio  Message
052730  -7 2784  A61CK TM2WWA -12
075330  +5  885  A61CK OK1CI -08 (x3)
141330  -2 2491  A61CK 9A3K JN65 (x2)
103300 -10  733  A61CK UA3ZZ KO80 (x2)
061230  -9 2358  A61CK RD7LC -07 (x2)
061900 -17 1260  A61CK RA6OF KN87
063900  -7 2307  A61CK RD7LC -12 (x2)
072330  +1 2738  A61CK IZ5MMT JN52
175100 -12  799  A61CK IS0KNS JN40

UTC    dB Audio  Message
192000  -6  908  A61CK SP9ONC JN99

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.