OH1CAH — reception at SO8OO

Observed FT8 message patterns

Attributed sample

11 messages

Active dates

4 UTC dates

Estimated median S/N

-5 dB

S/N percentile sample

Too small

Recurring-pattern threshold

Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 8.

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 OH1CAH 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 OH1CAH

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

KP11 · 5 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,288 km (approx.)

Last such locator decoded

2026-10-15 01:53 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
045800  +8  505  OH1CAH F1IQH R-13
045830  +7  607  OH1CAH OE3FVU JN78
045830  +2  505  OH1CAH F1IQH 73
045900  +7  607  OH1CAH OE3FVU JN78 (x4)
040700 -16 2055  OH1CAH IQ4JO JN63
152330 -12 2007  OH1CAH R9WJ LO73
152330 +13  507  OH1CAH HA7TM JN97
152330  +3 2489  OH1CAH DK7ZT -09
152400 +15  507  OH1CAH HA7TM R-20
152400  -5 2488  OH1CAH DK7ZT -09
152430 +15  506  OH1CAH HA7TM 73
152430  -4 2488  OH1CAH DK7ZT -09

UTC    dB Audio  Message
180200 -13  737  9A60CBM OH1CAH KP11
180215  +2  736  OH1CAH 9A60CBM -12
034615  +3 2581  OH1CAH F1PBZ -18 (x4)
062600  -7  344  OH1CAH OH2BYJ KP10 (x2)
172230  +1 1454  OH1CAH OH3NAQ KP33 (x2)
040230 -20 1195  OH1CAH DL3FBI R-16

UTC    dB Audio  Message
015545  -3  471  DO1ID OH1CAH R+01
015600  -2 2602  OH1CAH DO9BAU JO62
015600  +6  238  OH1CAH DO1ID RR73
015615  -7  470  DO1ID OH1CAH 73
015630  +4 2602  OH1CAH DO9BAU JO62 (x11)

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.