JA5BEN — 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: PM63

Receiver-side FT8 activity involving JA5BEN, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-03.

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 22 FT8 messages attributed to JA5BEN as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (95%), followed by 20 m (5%). In this small sample, the estimated median decoder S/N was -5 dB; no usual signal pattern is inferred.

Overview

22
Messages attributed
2
UTC dates decoded
4
Active 15-min windows
-5 dB
Estimated median S/N

Bands

40m · 21 20m · 1
First attributed message: 2026-06-12
Last attributed message: 2026-09-03 21:19 UTC

Observed FT8 message patterns

Attributed sample
22 messages
Active dates
2 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-9 to -1 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 19.

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 JA5BEN in decoded directed-looking exchanges:

Most frequent locator attributed to JA5BEN

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
PM63 · 10 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,540 km (approx.)
Last such locator decoded
2026-09-03 21:18 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 UTCBandJA5BEN S/NCounterpartCounterpart S/NMsgsCapture
11-02 22:05 40m - / -8 GJ0KYZ +5 / - 3 Partial capture
11-02 21:59 40m - / -3 TC2TR -12 / - 3 ✓ Closing fragment
11-02 21:53 40m - / -5 F4HTW +5 / - 3 ✓ Closing fragment
11-02 21:53 40m - / -6 G4CFS +9 / - 5 ✓ Closing fragment
11-02 21:49 40m - / - G0RIF -3 / - 2 Partial capture
11-02 21:45 40m - / -9 EA8UP +2 / - 5 ✓ Closing fragment
11-02 21:44 40m - / - EA3ENB -6 / - 8 Partial capture
11-02 21:43 40m - / - EA3AAY -10 / - 3 Partial capture
11-02 21:36 80m - / -13 E78W +5 / - 3 Partial capture
11-02 21:32 80m - / -17 OM2WW +8 / - 3 Partial capture
11-02 21:28 80m - / -18 I0KMJ +10 / - 6 ✓ Closing fragment
11-02 21:20 80m - / -19 OE8TED +13 / - 3 ✓ Closing fragment
10-20 08:36 10m - / -10 CN8WK 0 / - 2 ✓ Closing fragment
09-03 21:18 40m -8 / - D2ACE - / -10 2 Partial capture
09-03 21:17 40m -8 / -17 SV9QWC -17 / - 6 Partial capture
09-03 21:06 40m - / -1 EX7CQ -7 / - 4 ✓ Closing fragment
09-03 21:04 40m - / -5 IW9HPG 0 / - 4 ✓ Closing fragment
09-03 20:56 40m - / -23 EA3EDU -8 / - 6 ✓ Closing fragment
09-03 20:55 40m -5 / - TN8GD - / - 3 ✓ Closing fragment
09-03 20:53 40m - / - PD7BDN -4 / - 4 Partial capture
09-03 20:50 40m -3 / -15 IZ8EYN -9 / -17 9 ✓ Full exchange observed
09-03 20:48 40m -4 / -8 ON4IQ +16 / +6 6 ✓ Full exchange observed
09-03 20:48 40m -2 / -16 LB7ZG +9 / -10 5 ✓ Full exchange observed
09-03 20:47 40m -3 / -12 YO3GK +3 / - 4 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
215315  +0 2879  JA5BEN F4HTW -05
215345  +5 2825  JA5BEN G4CFS IO91
215345  +7 2879  JA5BEN F4HTW RR73
215415  +8 2825  JA5BEN G4CFS IO91
215415  +9 2879  JA5BEN F4HTW RR73
215445  +7 2825  JA5BEN G4CFS R-06 (x2)
215715  -8 1008  JA5BEN EA5FDA IM97
215945 -12 1744  JA5BEN TC2TR -03 (x2)
220015 -14 1009  JA5BEN EA5FDA IM97
220045 -11 1744  JA5BEN TC2TR RR73
220515  +3  337  JA5BEN GJ0KYZ -08 (x3)
80m 
UTC    dB Audio  Message
212015 +11 1259  JA5BEN OE8TED -19 (x3)
212830 +13 1150  JA5BEN I0KMJ JN62 (x6)
213200 +11 1322  JA5BEN OM2WW JN88 (x3)
213615  +3  555  JA5BEN E78W -13 (x3)
10m 
UTC    dB Audio  Message
084000 -23 1729  JA5BEN 9K2WA -10
084100 -22 1729  JA5BEN RR73; SP9AU <...> -22
083615  +0 1663  JA5BEN CN8WK -10 (x2)

CW

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

Explore CW reception at SO8OO

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