ES8TJM — 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: Estonia Most frequent locator attributed to this token: KO18

Receiver-side FT8 activity involving ES8TJM, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 80m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-13 and 2026-10-18.

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 34 FT8 messages attributed to ES8TJM as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). In this small sample, the estimated median decoder S/N was +5 dB; no usual signal pattern is inferred.

Overview

34
Messages attributed
2
UTC dates decoded
5
Active 15-min windows
+5 dB
Estimated median S/N

Bands

80m · 34
First attributed message: 2026-08-13
Last attributed message: 2026-10-18 20:46 UTC

Observed FT8 message patterns

Attributed sample
34 messages
Active dates
2 UTC dates
Estimated median S/N
+5 dB
Estimated 10th-90th percentile
-4 to +10 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 31.

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 ES8TJM in decoded directed-looking exchanges:

Most frequent locator attributed to ES8TJM

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
KO18 · 16 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
955 km (approx.)
Last such locator decoded
2026-10-18 20:46 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 UTCBandES8TJM S/NCounterpartCounterpart S/NMsgsCapture
10-18 20:44 80m +8 / - EA6Y - / - 2 Partial capture
10-18 20:40 80m +3 / - EA6Y - / - 3 Partial capture
10-18 20:38 80m -2 / -21 JA9PPC -7 / -12 5 ✓ Full exchange observed
10-18 20:38 80m - / - JH4IFF -11 / - 2 Partial capture
10-18 20:37 80m - / - JH0RNN -18 / - 3 Partial capture
10-18 20:36 80m -4 / -11 JR1AIB 0 / - 5 ✓ Closing observed
10-18 20:35 80m -9 / - OY1HJ - / -13 4 ✓ Closing fragment
10-18 20:30 80m +9 / - TF4M - / -10 3 ✓ Closing fragment
10-18 20:29 80m +7 / -4 YO8CRU -10 / -12 4 ✓ Full exchange observed
10-18 20:27 80m +6 / - 4Z5AV - / -13 3 ✓ Closing fragment
08-13 19:15 80m - / -2 RA3QH -6 / - 2 Partial capture
08-13 19:13 80m +6 / +2 SO1CJ +12 / -3 5 ✓ Full exchange observed
08-13 19:12 80m +2 / -6 R9HBF -16 / -8 4 ✓ Full exchange observed
08-13 19:10 80m +6 / - SV9MBH - / - 3 Partial capture
08-13 19:08 80m +8 / - LA2GCA - / -18 3 ✓ Closing fragment
08-13 18:45 80m +2 / - SV9MBH - / - 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
203745  -2  603  ES8TJM JR1AIB 73
203745 -17 1054  ES8TJM JH0RNN PM97
203815 -12 1949  ES8TJM JH4IFF PM74
203815 -16 1055  ES8TJM JH0RNN PM97
203815  -5  306  ES8TJM JA9PPC PM86
203830  -4  905  JA9PPC ES8TJM -12
203845 -10 1949  ES8TJM JH4IFF PM74
203845  -7  306  ES8TJM JA9PPC R-21
203900  +0  905  JA9PPC ES8TJM RR73
203915 -10  306  ES8TJM JA9PPC 73
204015  +5  918  EA6Y ES8TJM KO18 (x5)
10m 
UTC    dB Audio  Message
094000  -6  471  ES8TJM <...> +01

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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