JH8SYG — 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: Japan Most frequent locator attributed to this token: QN03

Receiver-side FT8 activity involving JH8SYG, decoded by SO8OO in southeastern Poland. 27 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-06-19.

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 27 FT8 messages attributed to JH8SYG 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 -2 dB; no usual signal pattern is inferred.

Overview

27
Messages attributed
2
UTC dates decoded
4
Active 15-min windows
-2 dB
Estimated median S/N

Bands

20m · 27
First attributed message: 2026-06-15
Last attributed message: 2026-06-19 15:34 UTC

Observed FT8 message patterns

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

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 23.

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 JH8SYG in decoded directed-looking exchanges:

Most frequent locator attributed to JH8SYG

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
QN03 · 9 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,073 km (approx.)
Last such locator decoded
2026-06-19 15:34 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 UTCBandJH8SYG S/NCounterpartCounterpart S/NMsgsCapture
11-05 14:35 80m - / -12 R2AB -8 / - 2 ✓ Closing fragment
10-29 14:29 40m - / - YO5QDI 0 / - 8 Partial capture
10-24 14:02 40m - / -9 RA5AK -16 / - 2 Partial capture
10-24 14:00 40m - / -16 HA8CE +1 / - 5 ✓ Closing fragment
10-02 15:17 80m - / -11 OH3NAQ -14 / - 3 ✓ Closing fragment
10-02 15:14 80m - / - UX1AA -6 / - 5 Partial capture
10-01 16:02 80m - / -19 OH2CLX +6 / - 2 ✓ Closing fragment
10-01 15:18 80m - / -18 OH8SR -21 / - 2 ✓ Closing fragment
10-01 14:54 80m - / -11 LY7M +8 / - 2 ✓ Closing fragment
09-30 15:14 80m - / -17 OH2BV 0 / - 2 ✓ Closing fragment
09-05 15:40 40m - / -21 UD6AWJ -4 / - 4 ✓ Closing fragment
08-25 15:49 40m - / -17 UT5MB +14 / - 3 ✓ Closing fragment
08-25 15:48 40m - / -12 UB4FGK -16 / - 3 ✓ Closing fragment
08-25 15:43 40m - / -15 R7DX +8 / - 3 ✓ Closing fragment
08-25 15:41 40m - / -23 OH2ZZ -3 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
151830 -18  818  JH8SYG OH8SR RR73
160230  +6 2263  JH8SYG OH2CLX -19 (x2)
151415  -6 2397  JH8SYG UX1AA KO70 (x5)
151700 -15 1115  JH8SYG OH3NAQ -11 (x3)
202400 -11  966  JH8SYG TF4M -18
150330 -10  502  JH8SYG R8PG/P RR73
143545  -9 1438  JH8SYG R2AB -12 (x2)
40m 
UTC    dB Audio  Message
140015  +5 2678  JH8SYG HA8CE -16 (x4)
140215 -14 2344  JH8SYG RA5AK KO85 (x2)
140245  +0 2678  JH8SYG HA8CE RR73
142915  -2 1022  JH8SYG YO5QDI KN17 (x8)

CW

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

Explore CW reception at SO8OO

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