JA1GUC — 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: PM95

Receiver-side FT8 activity involving JA1GUC, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-11-03.

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 6 FT8 messages attributed to JA1GUC 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 (83%), followed by 80 m (17%). In this small sample, the estimated median decoder S/N was -18 dB; no usual signal pattern is inferred.

Overview

6
Messages attributed
2
UTC dates decoded
3
Active 15-min windows
-18 dB
Estimated median S/N

Bands

80m · 1 20m · 5
First attributed message: 2026-06-10
Last attributed message: 2026-11-03 21:11 UTC

Observed FT8 message patterns

Attributed sample
6 messages
Active dates
2 UTC dates
Estimated median S/N
-18 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 0.

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 JA1GUC in decoded directed-looking exchanges:

Most frequent locator attributed to JA1GUC

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
PM95
SO8OO receiver locator
KN09VW
Locator-centre separation
8,693 km (approx.)
Last such locator decoded
2026-11-03 21:11 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 UTCBandJA1GUC S/NCounterpartCounterpart S/NMsgsCapture
11-03 21:32 80m - / -14 IZ3ENH -2 / - 2 ✓ Closing fragment
11-03 21:15 80m - / -14 UX5UO +2 / - 4 ✓ Closing fragment
11-03 21:08 80m - / -18 OE8TED +14 / - 2 ✓ Closing fragment
10-29 22:09 40m - / -24 EA8UP -12 / - 3 Partial capture
10-29 21:57 40m - / -14 SV5BYP -8 / - 2 ✓ Closing fragment
10-27 18:04 40m - / -14 SV1SGC -12 / - 2 ✓ Closing fragment
08-26 11:42 20m - / - M0CKX -2 / - 4 Partial capture
08-18 19:33 40m - / -16 SP6JIU +20 / - 2 ✓ Closing fragment
08-18 19:22 40m - / -15 DK7ZT -24 / - 2 Partial capture
08-18 19:20 40m - / -16 SP6JIU +18 / - 2 ✓ Closing fragment
08-16 17:08 40m - / -15 YO8RQP -8 / - 4 ✓ Closing fragment
08-16 17:02 40m - / -6 UR1CCT +8 / - 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
210830 +17 2841  JA1GUC OE8TED -18 (x2)
211145 -17 2785  UR5ZHJ JA1GUC PM95
211500  +3  833  JA1GUC UX5UO KO50 (x4)
213200  -4 1559  JA1GUC IZ3ENH -14 (x2)
40m 
UTC    dB Audio  Message
192230 -24 1906  JA1GUC DK7ZT -15
193300 +18 2951  JA1GUC SP6JIU -16 (x2)
135945  +1  912  JA1GUC UA4FKT R-02
174245  -8 2625  JA1GUC UB3ZKO KO80
174315 -20 1655  JA1GUC R6DJR -11
175215  -3 2604  JA1GUC IC8TEM R-22
175245  -1 2624  JA1GUC UB3ZKO KO80
180430  -9 1596  JA1GUC SV1SGC R-14 (x2)
215700  -9 1359  JA1GUC SV5BYP -14 (x2)
220900 -13 2137  JA1GUC EA8UP -24 (x3)
20m 
UTC    dB Audio  Message
114245  -4 1715  JA1GUC M0CKX IO93 (x5)

CW

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

Explore CW reception at SO8OO

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