JA5BZL — 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 JA5BZL, decoded by SO8OO in southeastern Poland. 222 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 21 UTC dates in the available aggregate history. Observed between 2026-08-12 and 2026-11-05.

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 222 FT8 messages attributed to JA5BZL as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (74%), followed by 160 m (25%) and 40 m (1%). 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

222
Messages attributed
21
UTC dates decoded
51
Active 15-min windows
-12 dB
Estimated median S/N

Bands

First attributed message: 2026-08-12
Last attributed message: 2026-11-05 21:34 UTC

Observed FT8 message patterns

Attributed sample
222 messages
Active dates
21 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-18 to -6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 45, moderate (-15 to -9 dB) 129, strong (≥ -8 dB) 48.

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.

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to JA5BZL

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 · 113 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,540 km (approx.)
Last such locator decoded
2026-11-05 21:34 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 UTCBandJA5BZL S/NCounterpartCounterpart S/NMsgsCapture
11-05 22:02 80m - / -14 HA5OB +17 / - 8 ✓ Closing fragment
11-05 21:57 80m - / -18 ON8DM +4 / - 3 ✓ Closing fragment
11-05 20:33 80m - / -22 ON6LEO +5 / - 3 ✓ Closing fragment
11-05 20:30 80m - / -16 DL3GA +8 / - 2 ✓ Closing fragment
11-05 20:19 80m - / -18 IZ0RPS -4 / - 2 ✓ Closing fragment
11-03 22:14 80m -18 / - UX7UU +8 / -11 6 Partial capture
11-03 22:12 80m -14 / -25 F1ULQ +3 / -20 6 ✓ Full exchange observed
11-03 22:11 80m -12 / - ON/PD4MB - / -17 2 Partial capture
11-03 22:09 80m - / -24 AO40EUDXF +6 / - 5 Partial capture
11-03 22:04 80m -18 / -16 CT1BWU -19 / - 4 ✓ Closing observed
11-03 22:02 80m -14 / -22 SP9N +4 / - 4 ✓ Closing observed
11-03 22:00 80m -15 / -16 IK0YUJ -6 / -11 5 ✓ Full exchange observed
11-03 21:55 80m -7 / -16 IU8PYF -5 / - 2 Partial capture
11-03 21:55 80m - / - R6NA +2 / - 4 Partial capture
11-03 21:54 80m -9 / -15 IK2LFF +8 / - 3 ✓ Closing observed
11-03 21:34 160m - / - F4HAB -14 / - 2 Partial capture
11-03 21:32 160m -8 / -15 IU2LVV -6 / -21 3 ✓ Full exchange observed
11-03 21:30 160m -12 / -14 LA1AAA -7 / - 3 ✓ Closing observed
11-03 21:18 160m -22 / -16 9A5E -7 / -17 3 Partial capture
11-03 21:12 160m - / -15 DL8AKI -17 / - 4 ✓ Closing fragment
11-01 20:42 160m - / - IU2LVV -6 / - 2 Partial capture
11-01 20:17 160m - / -17 F6BPZ 0 / - 3 ✓ Closing fragment
11-01 20:15 160m - / -17 IX1HOF -6 / - 2 ✓ Closing fragment
10-31 20:35 160m - / -12 F1PBZ +6 / - 4 Partial capture
10-31 20:34 160m - / - OZ9GA -12 / - 5 Partial capture
10-31 20:33 160m - / -17 IZ4TOA -6 / - 5 ✓ Closing fragment
10-31 20:32 160m - / - RU3DNN -8 / - 3 Partial capture
10-31 20:31 160m -17 / -12 UT7AA -7 / -15 5 ✓ Full exchange observed
10-31 20:31 160m -19 / - DF3IS -1 / -17 3 ✓ Closing observed
10-31 20:30 160m - / - SP5HIH +5 / - 6 Partial capture
10-31 20:28 160m - / -10 F4DVO -4 / - 2 ✓ Closing fragment
10-31 20:28 160m - / -13 IT9KSS -10 / - 4 ✓ Closing fragment
10-31 20:27 160m - / -19 G3PHO -6 / - 4 Partial capture
10-31 20:26 160m - / - RU3DNN -2 / - 2 Partial capture
10-31 20:24 160m - / - OM3RP +10 / - 6 Partial capture
10-31 20:24 160m -19 / - HB9OAB +10 / -15 4 ✓ Closing observed
10-31 20:22 160m -16 / -18 9A4N -4 / -11 4 ✓ Full exchange observed
10-31 20:20 160m - / - G3PHO -6 / - 2 Partial capture
10-31 20:13 160m -18 / -15 DL6NDN +4 / - 7 ✓ Closing observed
10-31 20:13 160m - / - OM3RP +6 / - 2 Partial capture
10-31 20:12 160m - / - UG4L -1 / - 2 Partial capture
10-31 20:12 160m -19 / -8 UR4LRG +18 / - 5 ✓ Closing observed
10-31 20:10 160m -12 / -13 DG0OFT -1 / -22 6 ✓ Full exchange observed
10-31 19:40 80m - / -12 DN4TG +1 / - 2 ✓ Closing fragment
10-31 19:38 80m - / -21 DK8MM +19 / - 3 ✓ Closing fragment
10-31 19:38 80m - / - RY3D +3 / - 2 Partial capture
10-31 19:34 80m - / - ON8DM +11 / - 2 Partial capture
10-30 20:10 160m - / - IZ4TOA -4 / - 4 Partial capture
10-29 21:26 160m - / -18 DJ5MN +9 / - 3 ✓ Closing fragment
10-29 20:15 160m - / - G0BNR -10 / - 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
214500 -16  198  JA5BZL T77NM 73
215700 +10 1140  JA5BZL ON8DM -18 (x3)
220030 -12 1141  JA5BZL IU5AWQ R-11
220130 -14 1141  JA5BZL IU4RQY JN64
220230 +17 2901  JA5BZL HA5OB JN97
220230  -9 2243  <JA5BZL> DP75BAC
220300 +17 2901  JA5BZL HA5OB JN97 (x7)
160m
UTC    dB Audio  Message
211400  -9 2639  9A5E JA5BZL PM63
211430 -14 2639  SV8QG JA5BZL -19
211800 -22 1925  9A5E JA5BZL PM63
211815  -7 2133  JA5BZL 9A5E -16
211830 -23 1925  9A5E JA5BZL R-17
213000 -12 2577  LA1AAA JA5BZL PM63
213015  -7  327  JA5BZL LA1AAA -14 (x2)
213145  -6 2577  JA5BZL R6DG KN85
213145 -24 2726  JA5BZL F4HAB JN03
213215  -4 2843  JA5BZL IU2LVV -15
213230  -8 2577  IU2LVV JA5BZL R-21
213245  -9 2844  JA5BZL IU2LVV RR73
213415 -13 2726  JA5BZL F4HAB JN03 (x2)
40m
UTC    dB Audio  Message
203600 -10 2559  HG8LXL JA5BZL -14
204015 -10 2438  JA5BZL UT7HX -15
210630  -4 2643  EI2CN JA5BZL PM63
215900  -3 2391  JA5BZL F5PBG IN78
215900  -7 2014  JA5BZL F5NNN IN94 (x6)
195115  +6  820  JA5BZL RA6YDX LN04

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.

CW

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

Explore CW reception at SO8OO

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