HB9IRB — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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

Receiver-side FT8 activity involving HB9IRB, decoded by SO8OO in southeastern Poland. 23 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-01 and 2026-08-08.

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 23 FT8 messages attributed to HB9IRB as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -10 dB; no usual signal pattern is inferred.

Overview

23
Messages attributed
2
UTC dates decoded
4
Active 15-min windows
-10 dB
Estimated median S/N

Bands

First attributed message: 2026-08-01
Last attributed message: 2026-08-08 17:43 UTC

Observed FT8 message patterns

Attributed sample
23 messages
Active dates
2 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-15 to -3 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 9.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with HB9IRB in decoded directed-looking exchanges:

Most frequent locator attributed to HB9IRB

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 · 8 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
975 km (approx.)
Last such locator decoded
2026-08-08 17:43 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 UTCBandHB9IRB S/NCounterpartCounterpart S/NMsgsCapture
08-08 17:47 20m - / - 9A4ZM -8 / - 3 Partial capture
08-08 17:43 20m - / -6 IQ4JO -9 / - 2 ✓ Closing fragment
08-08 17:40 20m -6 / - DK8HC - / -11 2 Partial capture
08-08 17:36 20m - / +10 DL1UDO -11 / - 3 ✓ Closing fragment
08-08 15:40 20m - / - S58S -18 / - 2 Partial capture
08-08 15:33 20m -8 / - N0STL - / -15 3 ✓ Closing fragment
08-08 15:31 20m -11 / -14 LZ2VQ -18 / -9 5 ✓ Full exchange observed
08-01 10:01 20m -12 / - M0RLF - / -11 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
153600  -6 1584  S58S HB9IRB -14
154045 -20 1585  HB9IRB S58S JN76 (x2)
173645 -11 1412  HB9IRB DL1UDO JO31 (x3)
174000 -10 1586  DK8HC HB9IRB -11 (x2)
174100  -3 1585  CT7ARQ HB9IRB -10
174300  -7 1585  CQ HB9IRB JN47
174345 -12 2656  HB9IRB IQ4JO R-06 (x2)
174715 -10 1582  HB9IRB 9A4ZM JN86 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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