A99AA — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,060 messages

Active dates

36 UTC dates

Estimated median S/N

-11 dB

Estimated 10th-90th percentile

-20 to -1 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 281, moderate (-15 to -9 dB) 348, strong (≥ -8 dB) 431.

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 A99AA 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 A99AA

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

LL56 · 357 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

3,604 km (approx.)

Last such locator decoded

2026-09-20 00:20 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
002030  +1 2544  A99AA IU8RFW JN70
002030  +8 2615  A99AA F4EGM JN29
002045  -4 2544  CQ A99AA LL56
002100  -3 1578  A99AA IZ8DBJ JN70
002100 -16 2391  A99AA ER3PM KN47
002200  +2  866  A99AA PD0IFI JO32 (x6)
041645 -15 2438  A99AA TA3TK KM38 (x2)
041745 +10 2609  A99AA YO9CSM KN23
041745 -12 2438  A99AA TA3TK KM38

UTC    dB Audio  Message
213415 -24 1610  A99AA CT1FSA IM59 (x4)
004215 -11 2757  PI4DX A99AA LL56 (x2)
004530 +16 2294  A99AA SM6EHY JO67

UTC    dB Audio  Message
033100  +0 2570  AC0W A99AA -12 (x2)
035530  +2 2568  CQ A99AA LL56 (x2)
035615 -12 2122  A99AA RO6G -03
035645 -11 3031  A99AA K0IS EN41
035715  -9 2124  A99AA RO6G -06
035715  -8 3030  A99AA K0IS EN41
035745 -20 2258  A99AA VE2TK FN25
035745  -7 2569  A99AA RV6MX LN08
035745  -8 3030  A99AA K0IS EN41
035915  +2 2313  A99AA RU4D +00 (x2)
043600 -17 1523  R8LDJ A99AA -16 (x2)

UTC    dB Audio  Message
143400  -3 2700  A99AA IQ4JO JN63
143415 -16 1581  DA0WWA A99AA RR73
144345 -13 1959  A99AA G0FWX IO82
145045 -11 1784  A99AA IU3BSY JN55 (x2)
145145 -20 1738  A99AA LZ2SJ KN33
145145 -15 1783  A99AA IU3BSY JN55
145215 -16 1738  A99AA LZ2SJ KN33
145215 -14 1784  A99AA IU3BSY JN55
145315 -10 2050  A99AA S59YL JN65
145330 -22 1583  PU7KGB A99AA -14 (x2)
145430 -24 1583  CQ A99AA LL56                         a1
145545 -15 1132  A99AA IZ6BZQ JN63
145600 -20 1583  EA5JKM A99AA 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.