9A3MA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Croatia Most frequent locator attributed to this token: JN73

Receiver-side FT8 activity involving 9A3MA, decoded by SO8OO in southeastern Poland. 3,124 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 65 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 3,124 FT8 messages attributed to 9A3MA as the transmitting token by decoded message structure across 65 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 80 m (33%) and 20 m (7%). Most decodes (72%) fell within the six-hour window 03:00-09:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

3,124
Messages attributed
65
UTC dates decoded
290
Active 15-min windows
-8 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-10-05 22:15 UTC

Observed FT8 message patterns

Attributed sample
3,124 messages
Active dates
65 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-19 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 685, moderate (-15 to -9 dB) 781, strong (≥ -8 dB) 1,658.

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 9A3MA

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
JN73 · 1,199 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
883 km (approx.)
Last such locator decoded
2026-10-05 22:13 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 UTCBand9A3MA S/NCounterpartCounterpart S/NMsgsCapture
10-06 04:50 80m - / -4 US7KC +8 / - 2 ✓ Closing fragment
10-05 22:16 80m - / - EA7LIC -10 / - 3 Partial capture
10-05 22:15 80m - / - IZ0MIT -3 / - 3 Partial capture
10-05 22:15 80m - / - IK6DLK -2 / - 3 Partial capture
10-05 22:15 80m - / - PA3FPQ +14 / - 3 Partial capture
10-05 22:10 80m +10 / - VO1HP - / -10 10 ✓ Closing fragment
10-05 22:03 80m - / - IK6DLK +8 / - 3 Partial capture
10-05 22:03 80m - / - IZ0MIT -3 / - 4 Partial capture
10-05 21:54 80m +4 / - TT1GD - / -9 17 ✓ Closing fragment
10-05 21:39 80m - / - DK8HC -1 / - 2 Partial capture
10-05 21:38 80m +5 / -4 MM0ULL -7 / -12 4 ✓ Full exchange observed
10-05 21:14 80m +6 / - SP5ALV +15 / +2 8 ✓ Full exchange observed
10-05 21:01 80m +5 / - EI4KF - / - 26 Partial capture
10-05 20:41 80m +3 / - UA4FET - / - 39 Partial capture
10-05 20:38 80m +4 / 0 UA4FKT +5 / -3 6 ✓ Full exchange observed
10-05 20:37 80m +1 / - EI6HIB - / -12 3 ✓ Closing fragment
10-05 20:32 80m +4 / - JN7FAH - / - 8 Partial capture
10-05 20:30 80m +12 / - JE1PHH - / -15 4 Partial capture
10-05 16:39 80m -1 / - RA1QCX - / -15 6 ✓ Closing fragment
10-05 16:37 80m +1 / -6 OE5DML +2 / - 5 ✓ Closing observed
10-05 16:36 80m 0 / - EW7LZ +2 / -5 4 ✓ Closing observed
10-05 16:32 40m -11 / - R1QAM - / -15 5 ✓ Closing fragment
10-05 16:26 40m -8 / - DK3XU - / -16 5 ✓ Closing fragment
10-05 05:04 80m -5 / - C5R - / -19 82 Partial capture
10-05 04:29 80m - / - UA4FKT -18 / - 2 Partial capture
10-05 04:25 80m 0 / - HK3TY - / -12 6 ✓ Closing fragment
10-02 04:50 80m -7 / - OH1MLZ - / - 38 Partial capture
10-02 04:41 80m +7 / - K5TA - / -16 17 Partial capture
10-01 19:20 80m - / - SP4WJ -12 / - 13 Partial capture
10-01 19:14 80m - / - SP4WJ -17 / - 3 Partial capture
10-01 19:09 80m -7 / - EI4KF - / - 53 Partial capture
09-30 19:35 80m -3 / -6 UB3ANV -4 / -16 7 ✓ Full exchange observed
09-30 18:54 80m -9 / -3 OH1TSM -9 / - 4 ✓ Closing observed
09-29 05:16 80m - / - EC3A -16 / - 2 Partial capture
09-29 05:15 80m +1 / -4 ON7HM -9 / - 4 ✓ Closing observed
09-29 05:02 80m +2 / - CN8NY - / - 25 Partial capture
09-28 04:54 80m 0 / - F4FPR - / - 24 Partial capture
09-28 04:50 80m 0 / -6 DL8TV +12 / -2 6 ✓ Full exchange observed
09-28 04:49 80m -2 / -4 GM6URC -11 / -6 5 ✓ Full exchange observed
09-28 04:48 80m +8 / -3 LA9GX +4 / -9 5 ✓ Full exchange observed
09-28 04:45 80m -5 / - HK4D - / -13 4 ✓ Closing fragment
09-27 10:54 40m - / -2 UT2PC +2 / - 4 Partial capture
09-27 06:48 40m -16 / -6 EU7FBB -2 / - 5 ✓ Closing observed
09-26 06:13 40m -20 / - M9PAS - / -15 4 Partial capture
09-26 06:06 40m -20 / - W4KWS - / - 6 Partial capture
09-26 05:45 40m -16 / - RU6FK - / - 37 Partial capture
09-26 05:33 40m -16 / - RU6FK - / - 7 Partial capture
09-26 05:24 80m -4 / - F1IQH - / -15 9 Partial capture
09-24 17:13 40m -14 / - JH6HZH - / - 4 Partial capture
09-24 17:10 40m -14 / - BG0KE - / -20 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
221515 -10 2015  9A3MA IK6DLK JN63
221545 +15  329  9A3MA PA3FPQ JO32
221545  +8 2225  9A3MA OE3OOG JN87
221545  -1 2171  9A3MA IZ0MIT JN61
221545  +3 2015  9A3MA IK6DLK JN63
221615 +14  329  9A3MA PA3FPQ JO32
221615  +3 2653  9A3MA OM1AGE JN88
221615  -6 2171  9A3MA IZ0MIT JN61
221615  +1 2015  9A3MA IK6DLK JN63
221615 -10 1594  9A3MA EA7LIC IM86
221645  -1 2171  9A3MA IZ0MIT JN61
221715  -7 1594  9A3MA EA7LIC IM86 (x2)
045030  +7 1693  9A3MA US7KC R-04 (x2)
40m
UTC    dB Audio  Message
105015  +4 1011  9A3MA UT2PC R-01 (x5)
162630  -8 2207  DK3XU 9A3MA R-16 (x5)
163200 -11 2207  R1QAM 9A3MA -15 (x5)
20m
UTC    dB Audio  Message
073830 -19 1723  F1IQH 9A3MA JN73 (x8)
075015 -22 1814  9A3MA EA7LIC IM86
075030 -19 1723  F1IQH 9A3MA JN73 (x5)
044600 -22 1885  9A3MA HI8YMR -10
10m
UTC    dB Audio  Message
083330 -18 1715  9A3MA UA3IKR -10 (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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