JA3EQC — 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: PM74

Receiver-side FT8 activity involving JA3EQC, decoded by SO8OO in southeastern Poland. 8 FT8 messages attributed to this token as transmitter, on 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-06-18.

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 8 FT8 messages attributed to JA3EQC as the transmitting token by decoded message structure across 3 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 -11 dB; no usual signal pattern is inferred.

Overview

8
Messages attributed
3
UTC dates decoded
4
Active 15-min windows
-11 dB
Estimated median S/N

Bands

20m · 8
First attributed message: 2026-06-10
Last attributed message: 2026-06-18 21:31 UTC

Observed FT8 message patterns

Attributed sample
8 messages
Active dates
3 UTC dates
Estimated median S/N
-11 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 1.

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 JA3EQC in decoded directed-looking exchanges:

Most frequent locator attributed to JA3EQC

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
PM74 · 5 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,565 km (approx.)
Last such locator decoded
2026-06-18 21:30 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 UTCBandJA3EQC S/NCounterpartCounterpart S/NMsgsCapture
10-13 20:23 40m - / -20 ON7NQ +15 / - 4 ✓ Closing fragment
10-03 20:09 40m - / -24 3Z4DX -4 / - 2 Partial capture
09-25 21:06 40m - / -16 IZ5IMD +12 / - 2 ✓ Closing fragment
09-25 20:51 40m - / -20 DL9AJ +2 / - 2 ✓ Closing fragment
09-17 20:57 40m - / -12 LA8ENA -8 / - 2 ✓ Closing fragment
09-17 20:53 40m - / -15 F8FKI +19 / - 2 ✓ Closing fragment
09-17 20:20 40m - / -24 M5BFL +18 / - 2 ✓ Closing fragment
09-12 19:31 40m - / -23 OZ1AXG +18 / - 2 ✓ Closing fragment
08-26 21:09 20m - / -23 EA2CNU +3 / - 3 ✓ Closing fragment
08-26 21:07 20m - / -24 G3VCQ +8 / - 2 ✓ Closing fragment
08-17 20:37 20m - / -10 5B/IK7YTT -8 / - 2 Partial capture
08-15 15:12 20m - / -16 ON4IQ +12 / - 2 Partial capture
08-13 19:25 20m - / - SP1MGM +8 / - 4 Partial capture
08-11 20:56 20m - / -14 SV5BYP -4 / - 2 ✓ Closing fragment
08-07 20:10 20m - / -16 IT9BCC -3 / - 2 ✓ Closing fragment
08-06 20:27 20m - / -17 HB9TVS -14 / - 2 ✓ Closing fragment
08-05 15:09 20m - / -16 LZ1AAW -4 / - 2 ✓ Closing fragment
08-04 18:35 20m - / -14 PG1C -6 / - 2 ✓ Closing fragment
07-31 19:47 20m - / -15 EA4IJS -10 / - 4 ✓ Closing fragment
07-28 20:18 20m - / -17 EC5EA -1 / - 2 ✓ Closing fragment
07-26 20:01 20m - / -18 F1ODM -2 / - 2 ✓ Closing fragment
07-26 19:56 20m - / +1 S57FF -1 / - 2 Partial capture
07-26 19:48 20m - / -14 I1WUA -12 / - 2 ✓ Closing fragment
07-26 19:41 20m - / -11 IX1EJZ +8 / - 5 ✓ Closing fragment
07-26 19:41 20m - / - PD7BDN +10 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
083445 -17 2148  JA3EQC CN8WK RR73
40m 
UTC    dB Audio  Message
205330 +15  482  JA3EQC F8FKI RR73
205730  -8 1622  JA3EQC LA8ENA -12 (x2)
192430 -11 2135  JA3EQC YO9PH -14
205145  +2  374  JA3EQC DL9AJ -20 (x2)
210630  +9 2322  JA3EQC IZ5IMD -16 (x2)
200930  -4  599  JA3EQC 3Z4DX -24 (x2)
192215  -4 2006  JA3EQC OM3TWM -13
202315 +13 2812  JA3EQC ON7NQ JO21 (x4)
20m 
UTC    dB Audio  Message
192615  +8  384  JA3EQC SP1MGM JO73 (x2)
201630 -20 2017  JA3EQC 9K2GR -12
151215 +12 2383  JA3EQC ON4IQ -16 (x2)
203700  -5  565  JA3EQC 5B/IK7YTT -10 (x2)
213000  -6 1826  JA3EQC EA3EQS -15
213545  +9 2743  JA3EQC DR800WE -19
210700  +7 1844  JA3EQC G3VCQ -24 (x2)
210945  +3 2124  JA3EQC EA2CNU -23 (x3)
214315  +3 2495  JA3EQC DM4GG +01

CW

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

Explore CW reception at SO8OO

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