IZ0AIO — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

3,566 messages

Active dates

30 UTC dates

Estimated median S/N

-15 dB

Estimated 10th-90th percentile

-21 to -6 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,597, moderate (-15 to -9 dB) 1,336, strong (≥ -8 dB) 633.

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 IZ0AIO 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 IZ0AIO

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

JN61 · 3,092 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,158 km (approx.)

Last such locator decoded

2026-09-19 23:39 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
232730  +2 1552  IZ0AIO DL7ACA 73
233045 -20 1542  CQ IZ0AIO JN61                        a1
233400 -13 1542  IZ0AIO US2YW KN28
233415 -23 1542  US2YW IZ0AIO +10
233715 -23 1542  CQ IZ0AIO JN61 (x2)
233800 -12  773  IZ0AIO S56MLZ JN76
233815 -20 1542  S56MLZ IZ0AIO -05 (x2)
233900 -13  773  IZ0AIO S56MLZ 73
233915 -20 1542  CQ IZ0AIO JN61
234000  -3 1542  IZ0AIO DH0BRO JO62 (x2)
234045 -21 1542  DH0BRO IZ0AIO -06
234100  -1 1542  IZ0AIO DH0BRO JO62

UTC    dB Audio  Message
062330 -21 1344  IZ0AIO HA1ZW RR73 (x3)
213530 -16 2221  IZ0AIO PD2TX -11 (x2)
220730 -11 1048  IZ0AIO 9A7BB -10 (x3)
225245 -21 2221  E72ET IZ0AIO JN61
090330  -6 1539  IZ0AIO OE/DG7CF -11
091000 -19 2146  IZ0AIO IZ2FOS RR73
072000  +3  343  IZ0AIO OE8PIT JN66 (x4)

UTC    dB Audio  Message
034130  -9 2360  IZ0AIO F5MYK IN97 (x2)
034445 -22 2175  CQ IZ0AIO JN61                        a1
034830 -13 2360  IZ0AIO F5MYK IN97 (x5)
051730 -20 2175  IZ0AIO IV3DSG JN66 (x3)
222800  -2  807  IZ0AIO II7IABB -04
222830  -4  808  IZ0AIO RR73; YO5EEE <...> -20
223030 -22 1037  IZ0AIO II6IALU -13 (x2)

UTC    dB Audio  Message
192315  +2 1847  IZ0AIO EA8AT -09 (x2)
192430 -16 2520  EA8AT IZ0AIO R+01
192445  +4 1848  IZ0AIO EA8AT RR73 (x2)
192700 +11 1176  IZ0AIO EA8UP -15 (x2)
200500  +2 2257  IZ0AIO CN8NS -17 (x2)
202545  -4  615  IZ0AIO OD5ZZ +04 (x2)
202815  -1 1849  IZ0AIO EA8AT -11 (x3)
202930 -14 2519  EA8AT IZ0AIO 73

UTC    dB Audio  Message
132545 -14 2441  IZ0AIO F5ADE RR73
132915 -20 1278  IZ0AIO SV2FNT -11 (x13)
123415 -20 1786  IZ0AIO PD0DEX R-21

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.