9A3JH — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving 9A3JH, decoded by SO8OO in southeastern Poland. 105 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-17 and 2026-08-03.

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 105 FT8 messages attributed to 9A3JH 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 (39%), followed by 20 m (39%) and 80 m (22%). Most decodes (100%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -5 dB.

Overview

105
Messages attributed
4
UTC dates decoded
13
Active 15-min windows
-5 dB
Estimated median S/N

Bands

80m · 23 40m · 41 20m · 41
First attributed message: 2026-07-17
Last attributed message: 2026-08-03 20:11 UTC

Observed FT8 message patterns

Attributed sample
105 messages
Active dates
4 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-15 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 33, strong (≥ -8 dB) 64.

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 9A3JH 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 9A3JH

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 · 29 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
708 km (approx.)
Last such locator decoded
2026-08-03 20:11 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 UTCBand9A3JH S/NCounterpartCounterpart S/NMsgsCapture
08-03 20:23 40m - / -7 PD2MVL -2 / - 3 ✓ Closing fragment
08-03 20:19 40m - / - RV3YN -14 / - 3 Partial capture
08-03 20:15 40m - / - F5RRS -12 / - 2 Partial capture
08-03 20:14 40m - / -21 G3WGC -12 / - 4 ✓ Closing fragment
08-03 20:03 40m -5 / -21 R6FX 0 / -8 5 ✓ Full exchange observed
08-03 20:02 40m - / -12 DL1IP -2 / - 2 Partial capture
08-03 15:59 20m - / - F5MXH -5 / - 3 ✓ Closing fragment
08-03 15:51 20m - / -14 LZ2VQ -6 / - 2 ✓ Closing fragment
08-02 21:27 80m -20 / -12 YO8PS +9 / 0 5 ✓ Full exchange observed
08-02 21:25 80m -12 / -2 IQ4JO +1 / +1 5 ✓ Full exchange observed
08-02 21:23 80m -10 / -4 DO1NJN -6 / +2 5 ✓ Full exchange observed
08-02 21:21 80m -4 / -9 US5ZAY +8 / -2 5 ✓ Full exchange observed
08-02 21:18 80m -12 / -21 GM2OT -12 / -10 3 Partial capture
08-02 21:16 80m -14 / -23 R7BI +6 / - 6 ✓ Full exchange observed
08-02 21:12 80m - / - UA4FKT +10 / - 3 Partial capture
08-02 21:11 80m -13 / -7 HA7TM +16 / - 4 ✓ Closing observed
08-02 21:02 40m - / -10 RN6HK 0 / - 3 ✓ Closing fragment
08-02 20:59 40m - / - PD0IFI -1 / - 4 Partial capture
08-02 20:54 40m -10 / - F5PBG - / -1 2 ✓ Closing fragment
08-02 20:51 40m -11 / -9 DH0GBC -2 / +1 6 ✓ Full exchange observed
08-02 20:47 40m - / - OZ5AGJ -10 / - 2 ✓ Closing fragment
08-02 20:45 40m - / -19 RX3ASQ -13 / - 3 ✓ Closing fragment
08-02 20:41 40m - / -6 DM2HEY -6 / - 2 Partial capture
08-02 20:41 40m - / -13 R3SN -17 / - 3 ✓ Closing fragment
08-02 20:39 40m - / - F5RRS -14 / - 5 Partial capture
08-02 20:39 40m - / -6 HA7TM 0 / - 2 Partial capture
08-02 17:43 40m - / -8 UX7QV +1 / - 3 ✓ Closing fragment
08-02 17:29 40m - / -10 DL6UM -16 / - 3 ✓ Closing fragment
08-02 17:18 40m - / - PE1NPS -16 / - 3 Partial capture
08-02 15:59 40m - / +3 OK5AG/P -16 / - 2 Partial capture
07-18 20:55 20m - / - EA1IOK -10 / - 2 Partial capture
07-18 20:54 20m -5 / -4 HS0ZOY -12 / -4 2 Partial capture
07-18 20:52 20m 0 / - JR2TER - / -3 2 ✓ Closing fragment
07-18 20:49 20m -2 / - K2KN - / -14 2 Partial capture
07-18 20:45 20m -2 / - LW2EDM - / -9 2 Partial capture
07-18 20:43 20m -1 / +6 DF8TN -6 / -5 8 ✓ Full exchange observed
07-18 20:41 20m 0 / - JF2HPA - / -10 2 ✓ Closing fragment
07-18 20:38 20m -4 / - EX8ABR - / -13 2 Partial capture
07-18 20:37 20m -2 / - LW2EDM - / -10 2 Partial capture
07-18 20:36 20m +2 / - BH2WTV - / -14 2 ✓ Closing fragment
07-18 20:34 20m -5 / -7 IW0BLW -17 / -11 2 Partial capture
07-18 20:31 20m +2 / - EX8ABR - / -14 2 Partial capture
07-18 19:48 40m +1 / - VJ6X - / -16 3 Partial capture
07-18 19:46 40m +1 / - YC2BUZ - / -15 3 Partial capture
07-18 17:27 20m +2 / - VP2MAA - / -11 3 Partial capture
07-18 17:21 20m -2 / - TF8KW - / -6 4 ✓ Closing fragment
07-17 22:55 40m -8 / - YD1EQN - / -10 2 ✓ Closing fragment
07-17 22:52 40m -9 / - TJ1GD/P - / -14 2 ✓ Closing fragment
07-17 22:01 40m -15 / -3 DK8HC -10 / -1 7 ✓ Full exchange observed
07-17 21:59 40m -16 / - DL6LG - / -14 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
205045  +3 2544  JG1TJO 9A3JH R-15
205115  -3 2544  CQ DX 9A3JH JN75
205215  -2 2544  JR2TER 9A3JH -03 (x2)
205430  -5 2544  HS0ZOY 9A3JH -04
205445 -12 2577  9A3JH HS0ZOY R-04
205545  -8  708  9A3JH EA1IOK IN62 (x2)
155145  -6 2883  9A3JH LZ2VQ R-14 (x2)
155915  -7 2883  9A3JH F5MXH JN07 (x3)
105045  -6 2943  9A3JH EB3JT JN01 (x2)
40m 
UTC    dB Audio  Message
200430  +0 3032  9A3JH R6FX R-21 (x2)
201145  -8 3033  CQ 9A3JH JN75
201430 -13  235  9A3JH G3WGC JO02 (x2)
201530 -15 2015  9A3JH F5RRS JN36
201600 -12  235  9A3JH G3WGC R-21 (x2)
201630 -10 2015  9A3JH F5RRS JN36
201930 -11 1782  9A3JH RV3YN KO73 (x3)
202300  -2 3034  9A3JH PD2MVL JO21 (x3)
80m 
UTC    dB Audio  Message
212500 -12 2525  CQ 9A3JH JN75
212515  +1 2337  9A3JH IQ4JO JN63
212530 -10 2525  IQ4JO 9A3JH +01
212545  -2 2337  9A3JH IQ4JO R-02
212600 -15 2525  IQ4JO 9A3JH RR73
212615  +5 2337  9A3JH IQ4JO 73
212630 -10 2525  CQ 9A3JH JN75 (x3)
212745 +10 1839  9A3JH YO8PS KN37
212800 -23 2525  YO8PS 9A3JH +00
212815  +7 1839  9A3JH YO8PS R-12
212830 -17 2526  YO8PS 9A3JH RR73
212845  +9 1839  9A3JH YO8PS 73
212900 -11 2525  CQ 9A3JH JN75

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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