9A5VS — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving 9A5VS, decoded by SO8OO in southeastern Poland. 543 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 41 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-09-21.

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 543 FT8 messages attributed to 9A5VS as the transmitting token by decoded message structure across 41 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (66%), followed by 20 m (21%) and 40 m (10%). Most decodes (78%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -3.5 dB.

Overview

543
Messages attributed
41
UTC dates decoded
84
Active 15-min windows
-3.5 dB
Estimated median S/N

Bands

160m · 11 80m · 359 40m · 56 20m · 114 10m · 3
First attributed message: 2026-06-19
Last attributed message: 2026-09-21 20:21 UTC

Observed FT8 message patterns

Attributed sample
543 messages
Active dates
41 UTC dates
Estimated median S/N
-3.5 dB
Estimated 10th-90th percentile
-15 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 53, moderate (-15 to -9 dB) 128, strong (≥ -8 dB) 362.

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 9A5VS 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 9A5VS

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 · 349 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
708 km (approx.)
Last such locator decoded
2026-09-21 20:21 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 UTCBand9A5VS S/NCounterpartCounterpart S/NMsgsCapture
09-21 20:19 80m -15 / - RI1FJZ - / - 4 Partial capture
09-21 19:57 80m - / -3 IW2FUT -6 / - 2 Partial capture
09-21 19:54 80m - / -14 YT5DL +10 / - 4 ✓ Closing fragment
09-21 19:51 80m +11 / - IW2FUT +1 / -19 2 Partial capture
09-21 19:46 80m +7 / - RI1FJZ - / - 6 Partial capture
09-20 23:56 80m +4 / - RI1FJZ - / - 2 Partial capture
09-20 23:46 160m -22 / - 4O7CC - / - 2 Partial capture
09-20 23:19 160m -10 / - RI1FJZ - / - 3 Partial capture
09-20 23:11 160m - / -14 9A5E +7 / - 3 ✓ Closing fragment
09-19 23:25 80m +8 / - ON1JP -9 / -21 2 ✓ Closing observed
09-19 23:22 80m +7 / -16 RA6OY -1 / -9 11 ✓ Full exchange observed
09-19 23:20 80m - / -3 4O7CC -2 / - 2 ✓ Closing fragment
09-18 01:11 80m -2 / - EX7DY - / - 2 Partial capture
09-18 01:09 80m +4 / - RA6OY - / -8 2 Partial capture
09-18 01:07 80m 0 / -2 DO5PY -6 / -7 4 ✓ Full exchange observed
09-18 01:05 80m +2 / - ON4MAP -12 / -10 6 ✓ Closing observed
09-18 01:05 80m +6 / 0 ON3MOH -9 / -4 5 ✓ Full exchange observed
09-18 01:03 80m - / - RA6OY +8 / - 6 Partial capture
09-18 01:02 80m +4 / - CT7AUT - / -13 2 ✓ Closing fragment
09-18 00:57 80m +2 / -1 HB9RLZ +4 / -7 12 ✓ Full exchange observed
09-18 00:52 80m +8 / - EX7DY - / - 5 Partial capture
09-18 00:50 80m +8 / - AP2HA - / - 2 Partial capture
09-16 02:19 40m - / +2 EA1HFI -15 / - 3 ✓ Closing fragment
09-16 02:16 40m - / -10 KV3R -14 / - 3 ✓ Closing fragment
09-16 02:04 40m - / - TA2EE -16 / - 2 Partial capture
09-16 02:03 40m - / - KB3Z +3 / - 3 ✓ Closing fragment
09-16 02:03 40m - / - UA9SY -9 / - 8 Partial capture
09-13 02:57 40m - / -2 UA4FKT +4 / - 4 ✓ Closing fragment
09-13 02:54 40m - / -14 HK3W -13 / - 3 ✓ Closing fragment
09-13 02:48 40m - / +6 W6NWS +10 / - 2 ✓ Closing fragment
09-13 02:34 80m -6 / - KB1EFS - / - 4 Partial capture
09-07 23:28 80m -10 / - 7X5CY - / - 6 Partial capture
09-07 23:26 80m -10 / - SP100PKP - / -2 2 Partial capture
09-05 03:24 80m -8 / - OE5DML - / -15 2 Partial capture
09-05 03:23 80m -12 / - F5LMJ - / -16 3 Partial capture
09-05 03:21 80m -7 / - OH1LA - / -13 3 ✓ Closing fragment
09-04 00:17 80m -3 / - RI1FJL - / - 37 Partial capture
09-04 00:00 80m -6 / - IW9FRA - / - 3 Partial capture
09-03 23:50 80m 0 / - RI1FJL - / -17 4 Partial capture
09-03 19:12 80m +4 / - DL2EH - / - 2 Partial capture
09-03 19:10 80m -3 / -2 DG0OFT -7 / -14 4 ✓ Full exchange observed
09-03 19:07 80m -7 / -12 <...> -1 / -20 4 Partial capture
09-03 01:33 80m +1 / - RI1FJL - / - 8 Partial capture
09-03 00:59 80m -11 / - RI1FJL - / - 12 Partial capture
09-01 23:23 80m -2 / - G3WGC - / -6 5 Partial capture
09-01 22:59 80m +4 / -11 GM6URC -2 / -12 4 ✓ Full exchange observed
09-01 22:57 80m -2 / - MI0OBC - / -13 3 Partial capture
08-31 18:35 80m -9 / -11 DO5HOK -9 / - 3 ✓ Closing observed
08-30 08:53 10m -11 / - EX8ABR - / - 3 Partial capture
08-30 03:32 80m -1 / - HI8R - / -18 6 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
194845 +12 2860  RI1FJZ 9A5VS JN75 (x2)
195045  +3 2860  CQ 9A5VS JN75
195100  +1 2860  9A5VS IW2FUT JN46
195115 +11 2860  IW2FUT 9A5VS -19
195430 +16 2293  9A5VS YT5DL KN04 (x4)
195700  -6 1773  9A5VS IW2FUT R-03 (x2)
201915 -13 1818  RI1FJZ 9A5VS JN75 (x4)
160m 
UTC    dB Audio  Message
230945 -18 1937  CQ 9A5VS JN75 (x3)
231100  +9 2127  9A5VS 9A5E JN75 (x3)
231415 -20 1937  CQ 9A5VS JN75 (x2)
231945 -13 2423  RI1FJZ 9A5VS JN75 (x4)
234615 -21 1885  4O7CC 9A5VS JN75 (x2)
40m 
UTC    dB Audio  Message
020400 -18 1825  9A5VS UA9SY LO63
020400  +4 2784  9A5VS KB3Z 73
020430 -15 1824  9A5VS UA9SY LO63
020430 -16  834  9A5VS TA2EE KM69 (x2)
020530  +0 2787  9A5VS UA9SY LO63 (x4)
021630 -14 2075  9A5VS KV3R FM08 (x3)
021900 -16 1618  9A5VS EA1HFI IN72 (x3)
10m 
UTC    dB Audio  Message
073045  +1  703  9A5VS A71AT LL55 (x3)
085315 -11 2382  EX8ABR 9A5VS JN75 (x3)
20m 
UTC    dB Audio  Message
000430  +5 2830  9A5VS N1NK R-07 (x2)
032530  +3 2877  9A5VS US5HL -05 (x2)
000200 -17 2257  CP6CL 9A5VS JN75 (x2)
000415  -8  587  9A5VS EC3A -04
000415 -17 1993  9A5VS CP6CL RR73
000445  -2  587  9A5VS EC3A RR73
002145 -19 2141  CQ NA 9A5VS JN75
002200 -18 1911  9A5VS IW5ALZ JN53
002445 -12 2141  CQ NA 9A5VS JN75
002515  -7 2141  KC1WNO 9A5VS JN75
002715 -17 2163  W4DXM 9A5VS JN75 (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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