9H5SN — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

147 messages

Active dates

18 UTC dates

Estimated median S/N

-13 dB

Estimated 10th-90th percentile

-24 to -2 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 56, moderate (-15 to -9 dB) 50, strong (≥ -8 dB) 41.

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 9H5SN 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 9H5SN

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

JM75 · 56 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,697 km (approx.)

Last such locator decoded

2026-09-17 19:34 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
193445 -16  602  9H5SN IU8PML -13
193445 -17 1303  9H5SN F4MMH JN18
193500 -19 2558  IW8RRF 9H5SN +04
193515 -14 1204  9H5SN IW8RRF R+00
193515 -15  602  9H5SN IU8PML -13 (x3)
193615  +9 2558  9H5SN DO1TX JO62
193645 -11  602  9H5SN IU8PML -17
193715 -11 1896  9H5SN ON5RZ JO21
193715 -13  602  9H5SN IU8PML -17
193800 -19 2558  DO1TX 9H5SN -07
193830 -13 2558  IU8PML 9H5SN R-19 (x3)

UTC    dB Audio  Message
223330  -8 1204  9H5SN SP9MOA KO00
223330 -16 1039  <9H5SN> OH2NNE/4
223400 -18 1468  9H5SN UD6AWH KN84
223400 -12  637  9H5SN <...> R-13
223430 -16 1468  9H5SN UD6AWH KN84
223430 -21 1865  9H5SN EA1R IN73
223600 -12 2541  9H5SN <...> -13 (x3)
235030  -4 1065  9H5SN CT3MD -12 (x3)
235600 -13 1738  VA2PM 9H5SN JM75 (x3)

UTC    dB Audio  Message
145045 -12 1807  9H5SN DH1GKS JN38 (x3)
193400 -22 1428  9H5SN PU2UTY -16 (x2)

UTC    dB Audio  Message
210600  -9 2491  9H5SN F5MYK -15 (x2)
210800  +0  373  9H5SN M0UTD IO83
210830  +9 2639  9H5SN SM4IED JP71
210830  -1  373  9H5SN M0UTD IO83
210900  +9 2638  9H5SN SM4IED JP71
210900  -1  373  9H5SN M0UTD IO83
211030  +1 1577  9H5SN SM4IED JP71

UTC    dB Audio  Message
220715 -16 1612  9H5SN EA4MF IN80
220745  +8 2523  9H5SN F5HNQ -09
220745 -14 2113  9H5SN EA4MF IN80
221115  -5 2322  9H5SN R4FDW -11
062145 -20  908  TI5RR 9H5SN 73
062200  -7  908  9H5SN YO4NT -03
062200 -11 2475  9H5SN LZ1AMA KN23
062230  -9  908  9H5SN YO4NT -03 (x2)
062300 -16 2475  9H5SN LZ1AMA KN23
160745 -14 1683  BG3NQT 9H5SN JM75 (x3)
161415 -20 1320  G8OO 9H5SN JM75 (x2)

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.