EA5KAI — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

14 messages

Active dates

5 UTC dates

Estimated median S/N

-15 dB

S/N percentile sample

Too small

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 1.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with EA5KAI 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 EA5KAI

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

IM99

SO8OO receiver locator

KN09VW

Locator-centre separation

2,129 km (approx.)

Last such locator decoded

2026-08-23 17:33 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
185900  +1 1785  EA5KAI ON7DE JO20 (x3)
193100 -10 1092  EA5KAI ON5ACO -09
182330 -12 1827  EA5KAI 9H4JX -15 (x2)
183545 -19 2473  AM3MERCE EA5KAI R-15
184400  -3 2475  EA5KAI PA1PJ JO22 (x4)
185400 -15 2097  EA5KAI IZ1HJU JN44 (x2)
185915 -11  270  II9IAGM EA5KAI R-11
190945 -15 1301  II0IHMG EA5KAI R-12

UTC    dB Audio  Message
184900 -14 1618  EA5KAI EH3ST -20 (x2)

UTC    dB Audio  Message
131830 -13 1935  EA5KAI DC7MA JN39
131900 +13 2910  EA5KAI F4BYA JN19 (x2)
132400  -9 1931  EA5KAI DC7MA R-05 (x2)
132930 +10 2587  EA5KAI DL1R JN58 (x3)
140130  -7 2501  EA5KAI M7PHE IO93 (x4)
150145  +7 1370  EA5KAI ON4CVL JO10 (x3)

UTC    dB Audio  Message
145430 -20 1290  EA5KAI DH5BM JO41
162530  -1 2949  EA5KAI DO1FDK JO41 (x3)
164930  +3 2534  EA5KAI DB2HA JO52 (x7)
145945 -18 2026  EA5KAI PA3BMB JO22 (x3)
153515 -20 1482  EA5KAI IZ0EAE JN61

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.