JA7TZP — 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: QM08

Receiver-side FT8 activity involving JA7TZP, decoded by SO8OO in southeastern Poland. 2 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-07 and 2026-09-17.

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 2 FT8 messages attributed to JA7TZP as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The available sample contains attributed decodes on 40 m (100%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

2
Messages attributed
2
UTC dates decoded
2
Active 15-min windows
-
S/N pattern not inferred

Bands

First attributed message: 2026-09-07
Last attributed message: 2026-09-17 20:28 UTC

Observed FT8 message patterns

Attributed sample
2 messages
Active dates
2 UTC dates
S/N summary
Too few decodes
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

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).

Most frequent locator attributed to JA7TZP

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
QM08
SO8OO receiver locator
KN09VW
Locator-centre separation
8,525 km (approx.)
Last such locator decoded
2026-09-07 20:32 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 UTCBandJA7TZP S/NCounterpartCounterpart S/NMsgsCapture
10-30 21:31 40m - / -24 K2ZJ -13 / - 3 ✓ Closing fragment
10-30 21:23 40m - / -14 ON4IQ +4 / - 3 ✓ Closing fragment
10-16 20:32 40m - / -22 OK2ZDL +4 / - 2 ✓ Closing fragment
10-11 20:38 40m - / -10 DF2GH +4 / - 2 ✓ Closing fragment
10-06 20:46 40m - / - 9A2EU +14 / - 2 Partial capture
10-06 20:43 40m - / -11 IQ0AAX -10 / - 2 ✓ Closing fragment
10-02 20:45 40m - / -13 EA1MR -4 / - 4 ✓ Closing fragment
10-02 20:44 40m - / -20 OH5KNL +10 / - 2 ✓ Closing fragment
09-28 21:23 40m - / -12 EB5AFK -6 / - 2 Partial capture
09-28 20:32 40m - / - IU4PPL +4 / - 2 Partial capture
09-28 20:07 40m - / -15 IZ0IRH +7 / - 4 ✓ Closing fragment
09-25 21:06 40m - / -6 DL9AJ -6 / - 3 ✓ Closing fragment
09-22 20:37 40m - / - G0JJG -8 / - 2 Partial capture
09-22 20:13 40m - / -5 OK1UG -10 / - 2 Partial capture
09-22 20:12 40m - / -5 IZ7ECL +9 / - 2 ✓ Closing fragment
09-22 20:07 40m - / -18 9A5CW +10 / - 3 ✓ Closing fragment
09-22 20:05 40m - / -19 ON5LW +2 / - 3 ✓ Closing fragment
09-22 20:02 40m - / - HB9ELE +9 / - 3 Partial capture
09-21 20:44 40m - / - DL7ACA +6 / - 4 Partial capture
09-17 20:52 40m - / - F5PBG -1 / - 2 Partial capture
09-17 20:50 40m - / -4 DK5WL +2 / - 4 ✓ Closing fragment
09-17 20:49 40m - / -3 F8FKI +20 / - 2 ✓ Closing fragment
09-17 20:30 40m - / -11 DJ0MAB +13 / - 4 Partial capture
09-17 20:21 40m - / -12 EA3EDU +4 / - 3 ✓ Closing fragment
09-17 20:20 40m - / - DJ0MAB +5 / - 3 Partial capture
09-13 20:36 40m - / -21 F4JTM +6 / - 2 ✓ Closing fragment
09-13 20:17 40m - / -16 OT7K +11 / - 4 ✓ Closing fragment
09-13 20:06 40m - / -23 SP2GJI -16 / - 2 ✓ Closing fragment
09-12 21:25 40m - / -17 OZ1AXG +22 / - 3 ✓ Closing fragment
09-07 20:36 40m - / -16 SP5LST -6 / - 3 ✓ Closing fragment
09-07 20:33 40m - / -15 IT9PHU -10 / - 4 ✓ Closing fragment
09-07 20:33 40m - / - SA6ODD -4 / - 4 Partial capture
09-07 20:32 40m -15 / -15 LB7ZG +6 / - 3 ✓ Closing observed
09-05 20:16 40m - / -10 OZ7KJ/P +7 / - 2 ✓ Closing fragment
09-02 20:40 40m - / -9 TC2EYL -19 / - 3 Partial capture
09-01 20:37 40m - / - DL1NRC +3 / - 2 Partial capture
09-01 20:37 40m - / -14 R7ZY +10 / - 4 ✓ Closing fragment
08-30 21:09 40m - / -12 LZ123RF -5 / - 3 Partial capture
08-24 19:49 40m - / -15 DL8LE +15 / - 2 ✓ Closing fragment
08-23 20:17 40m - / - IS0LYN -10 / - 4 Partial capture
08-17 20:24 40m - / -15 SP6JIU +22 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
203815  +3 1396  JA7TZP DF2GH -10 (x2)
204030  -7 2621  JA7TZP F4JQH JN12
203245  +4 2675  JA7TZP OK2ZDL -22 (x2)
204415 -17 1101  JA7TZP EA2AGW JN01
212130 -19 1614  JA7TZP 5B4AMX -09
212315 +11 2759  JA7TZP ON4IQ -14 (x3)
213145 -14  303  JA7TZP K2ZJ R-24 (x2)
213245  -4 2993  JA7TZP I1YTO JN44
213315 -12  302  JA7TZP K2ZJ 73
204245 -12 2724  JA7TZP S52F -16

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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