JH1QAX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Japan

Receiver-side FT8 activity involving JH1QAX, decoded by SO8OO in southeastern Poland. 20 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-02.

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 20 FT8 messages attributed to JH1QAX as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (70%), followed by 80 m (30%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

20
Messages attributed
6
UTC dates decoded
8
Active 15-min windows
-12 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-09-02 18:18 UTC

Observed FT8 message patterns

Attributed sample
20 messages
Active dates
6 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-23 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 3.

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 JH1QAX in decoded directed-looking exchanges:

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 UTCBandJH1QAX S/NCounterpartCounterpart S/NMsgsCapture
09-13 20:23 80m - / -18 S59A +24 / - 2 ✓ Closing fragment
09-02 18:13 80m -22 / - Z38DX - / -19 6 Partial capture
08-30 04:58 20m - / -14 HK3G -10 / - 2 ✓ Closing fragment
08-19 20:11 80m - / -16 UR1CCT +18 / - 3 ✓ Closing fragment
08-12 19:19 80m - / -18 EU3AA +12 / - 2 ✓ Closing fragment
08-06 19:21 80m - / -21 Z62NS +5 / - 11 Partial capture
08-06 19:07 80m - / - SP3PLD +16 / - 2 Partial capture
08-06 18:29 80m - / -17 UN8DSW -17 / - 2 ✓ Closing fragment
08-01 21:22 10m - / -24 EA8UP -17 / - 2 ✓ Closing fragment
07-28 20:38 20m -8 / - <...> - / -15 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
192645  +7  915  JH1QAX Z62NS R-21
191900 +11 1610  JH1QAX EU3AA R-18 (x2)
194300  +3 1479  JH1QAX LZ1GC -08
201130 +18  541  JH1QAX UR1CCT KN69 (x3)
181330 -23 2186  Z38DX JH1QAX -19 (x6)
202315 +25  690  JH1QAX S59A R-18 (x2)
20m
UTC    dB Audio  Message
194215 -21 2016  YI1SAL JH1QAX RR73
203045 -20 1393  <...> JH1QAX R-05
203100  -9  438  JH1QAX RR73; JA1SHC <...> -10
202430  -6 2978  E70A JH1QAX -06
203845  -9 2978  <...> JH1QAX -15 (x2)
045815 -12  764  JH1QAX HK3G R-14 (x2)
10m
UTC    dB Audio  Message
212215 -15 1779  JH1QAX EA8UP R-24 (x2)
40m
UTC    dB Audio  Message
194330  -3 2936  JH1QAX UA6LCF LN07

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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