HA3TNJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Hungary Most frequent locator attributed to this token: JN86

Receiver-side FT8 activity involving HA3TNJ, decoded by SO8OO in southeastern Poland. 339 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-08.

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 339 FT8 messages attributed to HA3TNJ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (42%), followed by 10 m (40%) and 40 m (17%). Most decodes (72%) fell within the six-hour window 08:00-14:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was -1 dB.

Overview

339
Messages attributed
6
UTC dates decoded
26
Active 15-min windows
-1 dB
Estimated median S/N

Bands

40m · 59 20m · 143 10m · 137
First attributed message: 2026-06-08
Last attributed message: 2026-08-08 05:12 UTC

Observed FT8 message patterns

Attributed sample
339 messages
Active dates
6 UTC dates
Estimated median S/N
-1 dB
Estimated 10th-90th percentile
-12 to +14 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 39, strong (≥ -8 dB) 277.

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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with HA3TNJ in decoded directed-looking exchanges:

Most frequent locator attributed to HA3TNJ

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
JN86 · 62 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
521 km (approx.)
Last such locator decoded
2026-08-08 04:51 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 UTCBandHA3TNJ S/NCounterpartCounterpart S/NMsgsCapture
08-25 05:59 20m - / -4 MM0JTV -7 / - 3 ✓ Closing fragment
08-25 05:38 20m - / +10 M0SDV +6 / - 2 ✓ Closing fragment
08-25 05:34 20m - / - M0SDV +8 / - 2 ✓ Closing fragment
08-08 05:09 40m +1 / - G5TV - / -9 6 Partial capture
08-08 04:52 40m -3 / - G5TV - / +2 10 Partial capture
08-08 04:51 40m -2 / - IZ1DXG - / - 2 Partial capture
08-08 04:49 40m -5 / - OV1MF -8 / -5 4 ✓ Closing observed
08-08 04:46 40m -9 / 0 SP9KDA -21 / - 5 ✓ Full exchange observed
08-08 04:43 40m -8 / - TA3ZZ - / -8 4 Partial capture
08-08 04:41 40m -6 / 0 OH3CD -11 / -9 3 Partial capture
08-08 04:38 40m -7 / - SP7VPR - / +1 5 ✓ Closing fragment
08-08 04:37 40m -8 / - SP6U - / +1 3 ✓ Closing fragment
08-08 04:35 40m -8 / - <...> - / -7 2 Partial capture
08-08 04:34 40m -8 / - SQ8V - / +9 2 Partial capture
08-08 04:32 40m -8 / - SA3LEN - / - 2 ✓ Closing fragment
08-08 04:28 40m -9 / - ZL3JT - / -13 7 ✓ Closing fragment
08-08 04:26 40m -8 / - HA7TM - / +3 2 Partial capture
08-08 04:25 40m -8 / - F6BEC - / -4 2 ✓ Closing fragment
08-08 04:23 40m -7 / -2 DC2SF -19 / - 2 Partial capture
08-08 04:21 40m -6 / - KE9END - / -12 2 Partial capture
08-08 04:19 40m -4 / - DL8MKG +11 / - 2 ✓ Closing observed
07-21 08:52 10m - / - F5JUS -6 / - 2 ✓ Closing fragment
07-13 06:01 20m -11 / - G0LUH - / - 5 Partial capture
07-13 05:48 20m -12 / - M0CKX - / -15 13 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
055545  -1 2020  M0CKX HA3TNJ -15
060115  -2 1988  G0LUH HA3TNJ JN86 (x5)
060545 -11 1989  HB9EFK HA3TNJ R-14
060615  -9 1989  9J2FI HA3TNJ -06
053430  +5 2307  HA3TNJ M0SDV +21 (x4)
055915 -10 1579  HA3TNJ MM0JTV -04 (x3)
40m 
UTC    dB Audio  Message
045300  -1 2446  G5TV HA3TNJ +02 (x15)
10m 
UTC    dB Audio  Message
085230  -4 1312  HA3TNJ F5JUS R+14 (x2)

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.

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