HB9HBZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Switzerland Most frequent locator attributed to this token: JN36

Receiver-side FT8 activity involving HB9HBZ, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-09-09 and 2026-09-18.

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 50 FT8 messages attributed to HB9HBZ as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (76%), followed by 40 m (24%). Several six-hour UTC windows tied for the largest share (90%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

50
Messages attributed
5
UTC dates decoded
8
Active 15-min windows
-8 dB
Estimated median S/N

Bands

80m · 38 40m · 12
First attributed message: 2026-09-09
Last attributed message: 2026-09-18 05:42 UTC

Observed FT8 message patterns

Attributed sample
50 messages
Active dates
5 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-15 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 28.

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 HB9HBZ 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 HB9HBZ

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 · 24 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,158 km (approx.)
Last such locator decoded
2026-09-18 05:40 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 UTCBandHB9HBZ S/NCounterpartCounterpart S/NMsgsCapture
09-18 05:40 80m -11 / - ON7HM -9 / +4 2 Partial capture
09-18 05:39 80m -12 / - G0TSM/P - / -9 4 Partial capture
09-16 21:29 80m - / -18 3Z100PKP +4 / - 2 Partial capture
09-16 21:25 80m -12 / -15 SN4K +16 / -8 6 ✓ Full exchange observed
09-16 21:23 80m -15 / - TK/4O7CC - / -7 2 Partial capture
09-16 20:35 80m -4 / - TF4M - / -20 4 ✓ Closing fragment
09-16 20:32 80m -8 / - TF4M - / - 2 Partial capture
09-16 19:56 80m -20 / - S09S - / - 2 Partial capture
09-13 21:14 40m - / -6 EX7CQ 0 / - 2 ✓ Closing fragment
09-13 20:01 40m - / - DK8HC -3 / - 3 ✓ Closing fragment
09-13 19:59 40m -4 / -7 DG7DBM -8 / +4 6 Partial capture
09-13 19:58 40m - / -8 G8OO -7 / - 5 ✓ Closing fragment
09-13 19:56 40m -1 / - V51WH - / -7 4 ✓ Closing fragment
09-12 20:21 40m 0 / - EU3LA - / -17 7 ✓ Closing fragment
09-09 21:58 80m -14 / - CT7AUT - / -2 2 ✓ Closing fragment
09-09 21:57 80m -12 / -5 ON1BH -9 / 0 4 ✓ Full exchange observed
09-09 21:56 80m -9 / - HB3YBG -8 / - 5 ✓ Full exchange observed
09-09 21:53 80m -11 / -4 EH2PDA -24 / -8 6 ✓ Full exchange observed
09-09 21:52 80m -8 / - OO0O - / - 2 Partial capture
09-09 21:50 80m -8 / - DL9KM -20 / -5 4 ✓ Closing observed
09-09 21:48 80m -3 / 0 EH1PDA -22 / 0 5 ✓ Full exchange observed
09-09 21:44 80m -2 / - DK5CR/QRP - / -7 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
212500 +21 2339  HB9HBZ SN4K KO03
212515 -13 2335  SN4K HB9HBZ -08
212530 +12 2339  HB9HBZ SN4K R-15 (x2)
212615 -11 2335  SN4K HB9HBZ RR73
212630 +17 2339  HB9HBZ SN4K 73
212900 +10 1267  HB9HBZ 3Z100PKP -18 (x2)
053930 -11 2489  G0TSM/P HB9HBZ JN36 (x3)
054045  +5  699  HB9HBZ PH82LIB -04
054045  -9  629  HB9HBZ ON7HM JO10
054100 -15 2489  G0TSM/P HB9HBZ R-09
054230 -11 2489  ON7HM HB9HBZ R+04
40m 
UTC    dB Audio  Message
195900 -12  284  HB9HBZ DG7DBM JO31
195930  -7 1917  HB9HBZ G8OO JO02
195930 -11  284  HB9HBZ DG7DBM JO31
195945  -4 2269  DG7DBM HB9HBZ +04
200000  -9 1917  HB9HBZ G8OO JO02 (x2)
200100  -7  284  HB9HBZ DG7DBM R-07
200130  -6 1917  HB9HBZ G8OO 73
200130  -2  599  HB9HBZ DK8HC JO42 (x2)
200200  -4  284  HB9HBZ DG7DBM R-07 (x2)
200300  -3  599  HB9HBZ DK8HC 73
211400  +0 1715  HB9HBZ EX7CQ -06 (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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