HB9GXI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN47

Receiver-side FT8 activity involving HB9GXI, decoded by SO8OO in southeastern Poland. 51 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-09-19.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 51 FT8 messages attributed to HB9GXI as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (94%), followed by 80 m (4%) and 20 m (2%). Several six-hour UTC windows tied for the largest share (71%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

51
Messages attributed
6
UTC dates decoded
11
Active 15-min windows
-10 dB
Estimated median S/N

Bands

80m · 2 40m · 48 20m · 1
First attributed message: 2026-08-23
Last attributed message: 2026-09-19 05:21 UTC

Observed FT8 message patterns

Attributed sample
51 messages
Active dates
6 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-15 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 20.

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 HB9GXI 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 HB9GXI

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
JN47 · 18 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
975 km (approx.)
Last such locator decoded
2026-09-19 05:19 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.

Time UTCBandHB9GXI S/NCounterpartCounterpart S/NMsgsCapture
09-19 05:20 40m -14 / - UT4PA - / -8 4 ✓ Closing fragment
09-19 05:15 40m - / - UA4FKT 0 / - 3 Partial capture
09-19 05:14 40m -5 / - OM6APJ - / -5 3 ✓ Closing fragment
09-19 05:12 40m -9 / - US2YW - / -6 3 Partial capture
09-18 18:52 40m - / -5 9A5E +5 / - 2 ✓ Closing fragment
09-17 16:32 40m -2 / -13 LA2GCA -16 / -17 3 ✓ Full exchange observed
09-16 17:30 80m -14 / -16 SP8WB +2 / - 4 ✓ Closing observed
09-16 16:15 40m -8 / -9 DL6FBR +1 / -18 8 ✓ Full exchange observed
09-16 16:02 40m -10 / - DK5DW -6 / - 3 ✓ Closing observed
09-16 16:01 40m -8 / - ON1DGN -21 / -14 3 ✓ Closing observed
09-16 15:59 40m -12 / - HB9ZHK - / -14 3 ✓ Closing fragment
09-16 15:55 40m - / - DL9KM -6 / - 7 Partial capture
09-16 15:53 40m -23 / -8 SV1DKR -13 / -4 4 ✓ Full exchange observed
09-16 15:50 40m -8 / -1 I4BUQ -6 / - 4 ✓ Closing observed
09-16 15:49 40m -10 / -14 DJ0MAB +2 / -13 11 ✓ Full exchange observed
09-16 15:48 40m - / 0 ON4CJU -12 / - 2 ✓ Closing fragment
09-09 15:50 40m - / -16 DF3IS +2 / - 3 ✓ Closing fragment
09-07 13:40 40m - / - DL3YDX -2 / - 3 Partial capture
09-07 13:40 40m - / -3 OE/DL6CGU -14 / - 2 Partial capture
09-05 18:29 40m - / -10 F4MMH 0 / - 3 ✓ Closing fragment
09-05 18:24 40m -10 / - F6BHK - / 0 2 ✓ Closing fragment
09-05 18:23 40m -14 / - W1AW/4 - / -13 2 Partial capture
09-05 18:22 40m - / - F6FHZ -8 / - 5 Partial capture
09-05 18:21 40m - / - DM5CM -5 / - 2 Partial capture
09-05 18:18 40m -6 / - DL3IAK -8 / - 3 ✓ Closing observed
08-23 07:17 20m - / -12 UA3LRN -10 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m 
UTC    dB Audio  Message
051215 -10  716  US2YW HB9GXI -06 (x3)
051345 -10  717  CQ HB9GXI JN47
051415  -3  717  OM6APJ HB9GXI -05 (x2)
051500  -3  717  HB9GXI UA4FKT LO23
051515  -6  717  OM6APJ HB9GXI 73
051530  +1  717  HB9GXI UA4FKT LO23 (x2)
051900 -16 1707  CQ HB9GXI JN47
052000 -15 1707  UT4PA HB9GXI -08 (x4)
80m 
UTC    dB Audio  Message
173000 -14  680  SP8WB HB9GXI JN47
173015  +3 1592  HB9GXI SP8WB -16 (x2)
173100 -14  679  SP8WB HB9GXI 73
20m 
UTC    dB Audio  Message
071600 -15 1575  CQ HB9GXI JN47
071715 -11 2453  HB9GXI UA3LRN R-12 (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.

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