9A3AUH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Croatia Most frequent locator attributed to this token: JN75

Receiver-side FT8 activity involving 9A3AUH, decoded by SO8OO in southeastern Poland. 14,102 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 121 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-05.

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 14,102 FT8 messages attributed to 9A3AUH as the transmitting token by decoded message structure across 121 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (45%), followed by 80 m (41%) and 20 m (13%). Most decodes (57%) fell within the six-hour window 20:00-02:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (81%); the estimated median was 0 dB.

Overview

14,102
Messages attributed
121
UTC dates decoded
1,511
Active 15-min windows
0 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-10-05 23:03 UTC

Observed FT8 message patterns

Attributed sample
14,102 messages
Active dates
121 UTC dates
Estimated median S/N
0 dB
Estimated 10th-90th percentile
-12 to +9.9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 538, moderate (-15 to -9 dB) 2,137, strong (≥ -8 dB) 11,427.

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.

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 9A3AUH

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
JN75 · 10,382 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
708 km (approx.)
Last such locator decoded
2026-10-05 23:03 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 UTCBand9A3AUH S/NCounterpartCounterpart S/NMsgsCapture
10-05 23:09 40m - / -9 AO5CV -7 / - 2 ✓ Closing fragment
10-05 23:07 40m - / -3 G4FHL -5 / - 2 ✓ Closing fragment
10-05 21:38 40m -8 / - R2AIV - / -11 2 Partial capture
10-05 21:06 40m 0 / - DG9MHZ - / - 3 Partial capture
10-05 21:00 80m +10 / - DL8UBR - / - 2 Partial capture
10-05 20:55 80m +5 / - HB9JOE - / - 5 Partial capture
10-04 22:43 40m - / -16 IW0RLC 0 / - 5 ✓ Closing fragment
10-04 22:40 40m - / -9 EB5CS -4 / - 2 Partial capture
10-04 21:41 160m -19 / - LZ2IP - / - 2 Partial capture
10-04 21:24 80m 0 / -1 DL1FRH -12 / - 4 ✓ Closing observed
10-04 21:22 80m +6 / - YU2MS - / -3 3 ✓ Closing fragment
10-04 21:18 80m +7 / -10 MX0SQC 0 / -4 5 ✓ Full exchange observed
10-04 21:14 80m +4 / - UB0SMX/P - / - 6 Partial capture
10-04 21:09 80m +2 / -14 EU1EU +1 / - 8 ✓ Closing observed
10-04 07:35 40m 0 / - SQ8AA - / -2 2 ✓ Closing fragment
10-04 07:31 40m - / - DC8SP -6 / - 3 Partial capture
10-04 07:21 40m -3 / - DG1KSA - / -7 2 ✓ Closing fragment
10-04 06:58 40m +1 / - US5WDP - / -3 2 ✓ Closing fragment
10-04 06:09 40m 0 / - IU2EBR - / - 4 Partial capture
10-04 06:04 40m +1 / - SQ4KBF - / -23 10 Partial capture
10-04 06:00 40m +2 / - IR8PR - / +3 4 ✓ Closing fragment
10-04 05:58 40m -1 / -2 GJ0KYZ 0 / - 3 ✓ Closing observed
10-04 05:56 40m 0 / 0 M9PAS -10 / -3 4 ✓ Full exchange observed
10-04 05:47 40m 0 / - RD9M/3 - / -15 6 Partial capture
10-04 05:41 40m - / +8 YL3EK 0 / - 2 ✓ Closing fragment
10-04 05:39 40m +1 / - RD9M/3 - / - 5 Partial capture
10-04 04:43 80m 0 / -1 DK6XY +18 / -1 6 ✓ Full exchange observed
10-04 04:42 80m +4 / - F8VNU 0 / -14 4 ✓ Closing observed
10-04 04:39 80m +13 / -2 DL3CT -16 / -8 5 ✓ Full exchange observed
10-04 04:37 80m +12 / -5 EA2KV -10 / -4 5 ✓ Full exchange observed
10-04 04:36 80m +9 / - HB9IBA +3 / - 2 ✓ Closing observed
10-04 04:07 160m -13 / - LX1TI - / - 6 Partial capture
10-04 03:56 160m -12 / - LY7M - / - 4 Partial capture
10-04 03:52 160m -15 / -22 IK8TLZ -6 / -11 5 Partial capture
10-04 03:50 80m +6 / - DL2AMD +19 / -6 5 ✓ Full exchange observed
10-04 03:46 80m +9 / - SV7BVM - / -4 5 Partial capture
10-04 03:37 80m +13 / - ON4MAP - / -11 2 ✓ Closing fragment
10-04 03:30 80m +8 / - ON3ANY - / - 2 Partial capture
10-04 03:28 80m +4 / - C5R - / -20 4 ✓ Closing fragment
10-04 03:24 80m +12 / -2 DO2ZZ -4 / -4 6 ✓ Full exchange observed
10-04 03:22 80m +7 / -11 SP8VJV +8 / -3 5 ✓ Full exchange observed
10-04 03:18 80m +8 / - OH8D - / - 3 Partial capture
10-04 03:16 80m +5 / - LA4YGA - / -7 3 ✓ Closing fragment
10-04 03:09 40m -13 / - K8OCN - / -14 3 Partial capture
10-04 02:35 40m - / -19 R4FDD -2 / - 3 ✓ Closing fragment
10-03 20:02 80m +10 / - V51WH - / - 8 Partial capture
10-03 19:53 40m -9 / - M9RFD -18 / -15 2 ✓ Closing observed
10-03 19:50 40m -12 / - DF4JG - / -9 2 Partial capture
10-03 12:41 10m - / -5 CT2KCK +3 / - 3 ✓ Closing fragment
10-03 12:35 40m -7 / - SP9AWU -12 / - 14 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
213315 -10 2521  CQ 9A3AUH JN75                        a1 (x4)
213845  -9 2521  R2AIV 9A3AUH -11 (x2)
214045 -11 2522  CQ 9A3AUH JN75                        a1 (x2)
215815 -10  658  9A3AUH PD0PY RR73
223730  -1 2648  9A3AUH IK2UEC RR73
223815 -24 1862  9A3AUH IW0RLC JN63
230700  -5  563  9A3AUH G4FHL -03 (x2)
230930  -9  387  9A3AUH AO5CV -09 (x2)
80m
UTC    dB Audio  Message
234300 +14 2325  CQ 9A3AUH JN75 (x3)
205530  +3 2470  HB9JOE 9A3AUH JN75 (x5)
205930  +9 2470  CQ 9A3AUH JN75
210030  +6 2470  DL8UBR 9A3AUH JN75 (x2)
230200  +4 2471  CQ 9A3AUH JN75 (x4)
160m
UTC    dB Audio  Message
035800 -11 2510  LY7M 9A3AUH JN75
035945 +12 2271  9A3AUH SP9UPH R-24
040230 -12 2510  CQ 9A3AUH JN75 (x4)
040730 -15 2510  LX1TI 9A3AUH JN75 (x6)
041545 -13 2510  IT9NOV 9A3AUH JN75
214145 -17 2251  LZ2IP 9A3AUH JN75 (x2)
10m
UTC    dB Audio  Message
090015  -9 1331  9A3AUH F4LHL RR73
093030  -8 1242  9A3AUH DL80NRW +09
093315 -13 1802  9A3AUH DA2DA +10 (x2)
113800  -8 2608  9A3AUH PD4FLD -08
112345  -7 2450  9A3AUH DC7OT JO31 (x4)
113145 -17 2321  9A3AUH F4AYI JN08 (x3)
124130  +4 2367  9A3AUH CT2KCK IM59 (x3)
20m
UTC    dB Audio  Message
153115 -16 3104  9A3AUH VU2FR R-17
153415 -14 2540  9A3AUH YB6XFI NJ93
153415  +5 1804  9A3AUH R3UDU LO07 (x2)
192415 -12 2639  YC2YIZ 9A3AUH R-13
214315  -6 1814  9A3AUH MI7YDB RR73
124100  +4 1906  9A3AUH ON7HM JO10 (x3)
174515  +1 2639  Z21ML 9A3AUH JN75 (x3)
175830  +3 2485  9A3AUH RU3G KO92 (x3)

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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