HB9HFN — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

610 messages

Active dates

18 UTC dates

Estimated median S/N

+4.1 dB

Estimated 10th-90th percentile

-6.2 to +11 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 40, strong (≥ -8 dB) 568.

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 HB9HFN 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 HB9HFN

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 · 560 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,158 km (approx.)

Last such locator decoded

2026-09-16 19:14 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
052715  +8 2557  <...> HB9HFN JN36
052730 +10  383  HB9HFN SP9YGD JO90
052745  +9 2557  <...> HB9HFN JN36
052800 +16  383  HB9HFN SP9YGD JO90
052815  +3 2557  <...> HB9HFN JN36
052830 +17  383  HB9HFN SP9YGD JO90
053315  +1 2557  <...> HB9HFN JN36 (x5)
191315  -2 1496  RI1FJZ HB9HFN JN36 (x4)

UTC    dB Audio  Message
175145  +0 2559  L52GHM HB9HFN JN36
175200  +0 1951  HB9HFN UA3ZQN KO90
175215  -1 2559  L52GHM HB9HFN JN36
175230  -2 1951  HB9HFN UA3ZQN KO90 (x4)
201030  +5 2559  LO3 HB9HFN JN (x5)
023945  +8 2560  VY2JGC HB9HFN JN36 (x3)

UTC    dB Audio  Message
185400  +8 2593  VJ6X HB9HFN JN36 (x7)
185730 +11 2593  ZL1VAH HB9HFN JN36 (x2)
185815  -5 1905  HB9HFN DK7ZT +17
185830  +5 2593  ZL1VAH HB9HFN R-23 (x2)
185915  +8 2593  HB9HFN YO4NF -01 (x2)

UTC    dB Audio  Message
121945  +0 2685  CG2C HB9HFN JN36 (x3)

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.