4U1ITU — reception at SO8OO

Observed FT8 message patterns

Attributed sample

17 messages

Active dates

2 UTC dates

Estimated median S/N

-12 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) 13, strong (≥ -8 dB) 3.

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 4U1ITU in decoded directed-looking exchanges:

Most frequent locator attributed to 4U1ITU

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

JN36 · 2 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,158 km (approx.)

Last such locator decoded

2026-09-25 10:09 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
165330 +20 2291  4U1ITU OK1YQ JN79
165330 -12 1853  4U1ITU IK0SHH JN62
165330 +11  546  4U1ITU HA1RJ JN87
165330  +0 2413  4U1ITU 9A3TGT JN85
165330  -2 1743  4U1ITU 9A3K JN65
165345  -3 2203  4U1ITU QRX 73
165400 +13 2632  4U1ITU SP5GMM KO02
165400 -13 2107  4U1ITU SM5DXR JO89
165400 +16  546  4U1ITU HA1RJ JN87
165400  +8 2411  4U1ITU 9A3TGT JN85
165400  +7 1743  4U1ITU 9A3K JN65
165430 +19  546  4U1ITU HA1RJ JN87
165430 +14 1743  4U1ITU 9A3K JN65
165500 -21 2107  4U1ITU SM5DXR JO89
170715 +11 1327  4U1ITU LY3KI KO24

UTC    dB Audio  Message
164715  +8 2557  4U1ITU RZ1OA LP04
164715  +2 1275  4U1ITU RA6ABC KN96
164715 +11 1345  4U1ITU OE3KLU JN88
164715  +5 1045  4U1ITU IK2JYT JN45
164715 -12 2117  4U1ITU EA2BFM IN83
164715  +9  598  4U1ITU DL3TC JO50
164715 +10 2297  4U1ITU DH3MIT JN58
164745  +7 2556  4U1ITU RZ1OA LP04
164745  +7 1275  4U1ITU RA6ABC KN96
164745  -5 2688  4U1ITU OH3EX KP20
164745 +12 1345  4U1ITU OE3KLU JN88
164745  +4 1045  4U1ITU IK2JYT JN45
164745 -13 2117  4U1ITU EA2BFM IN83
164745  +9  598  4U1ITU DL3TC JO50
164745 +10 2297  4U1ITU DH3MIT JN58

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.