HB9EXN — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

552 messages

Active dates

24 UTC dates

Estimated median S/N

-10 dB

Estimated 10th-90th percentile

-19 to -3 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 114, moderate (-15 to -9 dB) 216, strong (≥ -8 dB) 222.

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 HB9EXN 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 HB9EXN

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

JN37 · 285 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

1,116 km (approx.)

Last such locator decoded

2026-09-18 19:44 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
193745  -3  384  HB9EXN M0LAD -13
193800  -3  385  M0LAD HB9EXN R+09
193815  -3  384  HB9EXN M0LAD -13
193830  -2  385  M0LAD HB9EXN R+09
193845  +0  384  HB9EXN M0LAD RR73
193900  +0  385  M0LAD HB9EXN 73
193930  -3  385  CQ HB9EXN JN37 (x2)
194030  +2  385  PA1PJ HB9EXN +02
194115  +4  385  HB9EXN PA1PJ R-02
194300  -5  385  PA1PJ HB9EXN 73
194445 -11  684  J48S HB9EXN JN37
194830  +9  988  HB9EXN DK5DW JN68 (x3)

UTC    dB Audio  Message
204245  -7 2127  CQ HB9EXN JN37
204430 +10  754  HB9EXN SP9AU JO90 (x3)
204615 -11 1122  CQ HB9EXN JN37
204630 -13  304  HB9EXN ON4MAP JO20 (x3)
210100  -7 1568  HB9EXN DA6BR -06 (x3)
211200  -9  943  HB9EXN II9IABJ -16
201715  -3 2134  HB9EXN 9A5E -12 (x2)
202230 -21  203  CQ HB9EXN JN37

UTC    dB Audio  Message
122830  -7 2907  HB9EXN OE7MAH +00
123130 -22  701  HB9EXN M9VVE IO93 (x6)
132145  +8  704  HB9EXN EN35UKR -16
132200 -12  704  EN35UKR HB9EXN R-13
132215 +12  704  HB9EXN EN35UKR -16
132230  -7  704  EN35UKR HB9EXN R-13
132245 +15  704  HB9EXN EN35UKR -16
132300 -15  704  EN35UKR HB9EXN R-13
132315 +16  704  HB9EXN EN35UKR -16
132330  -8  704  EN35UKR HB9EXN R-13

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.