IU7VOB — reception at SO8OO

Observed FT8 message patterns

Attributed sample

362 messages

Active dates

41 UTC dates

Estimated median S/N

-10 dB

Estimated 10th-90th percentile

-19 to +1 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 83, moderate (-15 to -9 dB) 120, strong (≥ -8 dB) 159.

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 IU7VOB 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 IU7VOB

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

JN81 · 256 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,009 km (approx.)

Last such locator decoded

2026-10-29 18:54 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
195545 -13 1129  TJ1GD IU7VOB JN81
200600  -6 1717  IU7VOB EX7CQ RR73
184715 -11 1386  AP5ARS IU7VOB JN81 (x3)
184930  -2 1386  HZ1IQ IU7VOB JN81 (x2)
185415  -9 1386  AP5ARS IU7VOB JN81 (x2)
180045  +2 2367  IU7VOB YL3CW -06 (x3)
180200 -21 1132  YL3CW IU7VOB +00
180215  +6 2368  IU7VOB YL3CW R-07 (x2)

UTC    dB Audio  Message
151100  -7 1368  IU7VOB F1PPH JN07
151130  -4 1369  IU7VOB PA3BMB JO22
151130  -5  610  IU7VOB F4NKF JN13
151200 -10 2013  IU7VOB UN7PNF -04
151200  -2  610  IU7VOB F4NKF JN13
151230 -13 2013  IU7VOB UN7PNF -04
151230  -6  610  IU7VOB F4NKF JN13
151300 -11 1187  IU7VOB PD2VE -06 (x2)
151400  -5 1368  IU7VOB F1PPH JN07
162300  -6  765  IU7VOB F4NKF JN13 (x5)

UTC    dB Audio  Message
063415 -21 2153  9J2FI IU7VOB JN81
063600 -15 2153  YO4NT IU7VOB 73
181700 -18 1224  IU7VOB CT3MD RR73

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.