9A4LT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Croatia Most frequent locator attributed to this token: JN74

Receiver-side FT8 activity involving 9A4LT, decoded by SO8OO in southeastern Poland. 23 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-05 and 2026-09-03.

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 23 FT8 messages attributed to 9A4LT as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Most decodes (74%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

23
Messages attributed
4
UTC dates decoded
11
Active 15-min windows
-9 dB
Estimated median S/N

Bands

40m · 23
First attributed message: 2026-08-05
Last attributed message: 2026-09-03 09:33 UTC

Observed FT8 message patterns

Attributed sample
23 messages
Active dates
4 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-19 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 11.

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 9A4LT in decoded directed-looking exchanges:

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 9A4LT

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
JN74 · 15 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
792 km (approx.)
Last such locator decoded
2026-09-03 09:33 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 UTCBand9A4LT S/NCounterpartCounterpart S/NMsgsCapture
09-03 09:13 40m -18 / +7 OE4BHF -8 / - 4 ✓ Closing observed
09-02 17:05 40m - / -6 DH0YAH -3 / - 3 ✓ Closing fragment
09-02 16:55 40m - / -3 DK9EU -8 / - 2 ✓ Closing fragment
09-01 11:00 40m - / -16 PE9JAN -22 / - 3 ✓ Closing fragment
08-31 20:03 40m -10 / - <...> - / - 6 Partial capture
08-31 19:57 40m -8 / - TA2EE - / -20 2 Partial capture
08-31 19:52 40m - / -4 DB9LG +8 / - 3 ✓ Closing fragment
08-31 19:39 40m - / -11 DL3MIB +8 / - 3 ✓ Closing fragment
08-31 19:38 40m 0 / - II7MGXX - / -8 2 Partial capture
08-31 16:43 20m - / -19 EX7DY -16 / - 2 ✓ Closing fragment
08-08 16:44 20m - / - DL9KM -16 / - 3 Partial capture
08-08 16:19 20m - / -7 SV2HTW -4 / - 3 Partial capture
08-08 10:11 40m - / -9 SQ9KWY 0 / - 2 ✓ Closing fragment
08-06 10:41 20m - / -5 LZ1AAW -16 / - 2 ✓ Closing fragment
08-06 10:19 20m - / -3 LZ1JZ -8 / - 2 ✓ Closing fragment
08-05 16:01 40m -16 / - PD0CIF - / - 2 ✓ Closing fragment
08-05 15:38 40m - / -4 YO8SDE -16 / - 4 ✓ Closing fragment
08-05 10:41 40m - / -7 UT4PA -9 / - 4 ✓ Closing fragment
08-04 19:49 20m - / -11 EA3RT -12 / - 2 Partial capture
08-04 19:29 20m - / -12 SV5BYP -17 / - 2 ✓ Closing fragment
08-04 19:01 20m - / -15 F5NBQ +7 / - 2 ✓ Closing fragment
08-04 18:55 20m - / -11 F5BRF -12 / - 2 ✓ Closing fragment
08-04 16:22 20m - / -2 F4VVJ -16 / - 2 ✓ Closing fragment
07-21 15:51 40m - / -8 SP5ROM -14 / - 2 ✓ Closing fragment
07-20 14:09 20m - / -9 G8YPE +2 / - 2 ✓ Closing fragment
07-18 13:57 40m - / -18 SP2DW -22 / - 2 ✓ Closing fragment
07-17 19:36 20m - / -17 JA0LFV -7 / - 2 ✓ Closing fragment
07-17 18:13 20m - / -14 JY5CG -12 / - 2 ✓ Closing fragment
07-16 19:53 20m - / -6 M9KTM +1 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
170015  -4  690  9A4LT OE1RIG RR73
170545  -6 1391  9A4LT DH0YAH -06 (x3)
170930 -13 1450  9A4LT IR7MGGC +10
171100  +0  597  9A4LT DK8HC JO42
084645 -19 1287  IW0HIQ 9A4LT JN74
085330  +8 1044  9A4LT RR73; R2DRE <...> +00
091345 -19 1287  OE4BHF 9A4LT JN74 (x2)
091500  -6 1198  9A4LT OE4BHF +07 (x2)
091645 -18 1287  IZ8PPI 9A4LT R-17
093345 -18 1287  I3LTT 9A4LT JN74
094000 -18 1543  9A4LT DL2HIR +02
20m 
UTC    dB Audio  Message
103745 -13  819  9A4LT M7OBM -15
104130 -15 1471  9A4LT LZ1AAW -05 (x2)
110445 -13  947  9A4LT G4AWA RR73
162445 -24 1538  9A4LT ES7GN -15
161300  -9  672  9A4LT PD1DRE RR73
161915  -5  961  9A4LT SV2HTW -07 (x3)
164415 -15 1907  9A4LT DL9KM JN68 (x3)
164300 -14 1215  9A4LT EX7DY -19 (x2)
101745 -23 1980  9A4LT F5RRS JN36

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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