JS2TFX — 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: PM85

Receiver-side FT8 activity involving JS2TFX, decoded by SO8OO in southeastern Poland. 42 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-18.

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 42 FT8 messages attributed to JS2TFX as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.

Overview

42
Messages attributed
1
UTC dates decoded
5
Active 15-min windows
-15 dB
Estimated median S/N

Bands

First attributed message: 2026-09-18
Last attributed message: 2026-09-18 20:05 UTC

Observed FT8 message patterns

Attributed sample
42 messages
Active dates
1 UTC dates
Estimated median S/N
-15 dB
Estimated 10th-90th percentile
-20 to -11 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 25, 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).

Most frequent locator attributed to JS2TFX

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
PM85 · 22 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,586 km (approx.)
Last such locator decoded
2026-09-18 20:05 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 UTCBandJS2TFX S/NCounterpartCounterpart S/NMsgsCapture
09-18 21:15 40m - / +7 V51WH -10 / - 2 ✓ Closing fragment
09-18 20:05 40m -18 / - RI1FJZ - / - 2 Partial capture
09-18 20:01 40m - / -11 RW3ZC +5 / - 4 Partial capture
09-18 19:59 40m -20 / - OZ0A - / - 3 Partial capture
09-18 19:57 40m - / -10 RW3ZC 0 / - 2 Partial capture
09-18 19:57 40m - / - DL1SVI +4 / - 2 Partial capture
09-18 19:56 40m -19 / -19 DK7SS -4 / -19 6 Partial capture
09-18 19:52 40m - / - R7ZY +4 / - 8 Partial capture
09-18 19:51 40m -20 / - HZ1TT - / - 2 ✓ Closing fragment
09-18 19:48 40m -16 / - RI1FJZ - / - 2 Partial capture
09-18 19:48 40m - / - UX5UW +5 / - 4 Partial capture
09-18 19:45 40m - / - SV1DZB -14 / - 2 Partial capture
09-18 19:43 40m - / -24 S57MPU +7 / - 6 ✓ Closing fragment
09-18 19:40 40m -13 / -16 EA4IAH -18 / -19 2 Partial capture
09-18 19:39 40m - / - R7RDE -12 / - 2 Partial capture
09-18 19:37 40m -12 / -10 IZ5IMD +8 / 0 6 ✓ Full exchange observed
09-18 19:36 40m -14 / -25 LY3QR -12 / -19 4 ✓ Full exchange observed
09-18 19:29 40m - / - UB2FEK -2 / - 2 Partial capture
09-18 19:29 40m - / - US2UM +5 / - 3 Partial capture
09-18 19:28 40m -12 / -7 F5NBU +8 / -4 5 ✓ Full exchange observed
09-18 19:26 40m -12 / - ON7GB - / - 3 Partial capture
09-18 19:25 40m - / -19 UB3BCE -16 / - 2 Partial capture
09-18 19:24 40m - / -6 RA3ZH -1 / - 3 ✓ Closing fragment
09-18 19:22 40m - / -11 OZ1GXW 0 / - 4 Partial capture
09-18 19:21 40m - / - F4IFO -8 / - 3 Partial capture
09-18 19:20 40m -13 / - VJ6X - / -17 3 ✓ Closing fragment
09-18 19:18 40m -16 / - A41DV - / - 2 Partial capture
09-18 19:16 40m -13 / -19 R2FBW -10 / -16 7 ✓ Full exchange observed
09-18 19:15 40m - / - R6YG -2 / - 2 Partial capture
09-18 19:15 40m -13 / -10 YO6LM +5 / -14 5 ✓ Full exchange observed
09-18 19:13 40m - / - ON5RZ +5 / - 3 Partial capture
09-18 19:13 40m - / - US2UM +7 / - 2 Partial capture
09-18 19:12 40m - / -8 RX3ASP -6 / - 3 ✓ Closing fragment
09-18 19:08 40m -16 / -10 HB9EFK +8 / -11 4 ✓ Full exchange observed
09-18 19:03 40m - / - S57BTI +16 / - 2 Partial capture
09-18 19:02 40m - / -15 9A5E +6 / - 3 ✓ Closing fragment
08-15 18:47 40m - / -24 SQ8LE -11 / - 2 Partial capture
08-15 18:42 40m - / -18 UA6YEX -10 / - 2 Partial capture
08-15 18:42 40m - / -12 UT5ZC +2 / - 2 ✓ Closing fragment
08-15 18:15 80m - / -18 R50RKZ +2 / - 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
195815  -3 2704  JS2TFX RW3ZC -10
195830 -18 1263  DK7SS JS2TFX R-16
195900 -21 1263  OZ0A JS2TFX PM85
195915 -24 1263  JS2TFX UX5UW KO50
195930 -20 1262  OZ0A JS2TFX PM85 (x2)
200115  +6 2703  JS2TFX RW3ZC -11 (x4)
200515 -16 1263  RI1FJZ JS2TFX PM85 (x2)
211530 -11 2685  JS2TFX V51WH +07 (x2)
212245 -10  838  JS2TFX A61EK -11
80m
UTC    dB Audio  Message
181500  +1 2249  JS2TFX R50RKZ -18 (x2)

CW

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

Explore CW reception at SO8OO

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