9A5CRZ — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving 9A5CRZ, decoded by SO8OO in southeastern Poland. 49 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-20.

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 49 FT8 messages attributed to 9A5CRZ as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (55%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

49
Messages attributed
6
UTC dates decoded
11
Active 15-min windows
-13 dB
Estimated median S/N

Bands

20m · 49
First attributed message: 2026-06-08
Last attributed message: 2026-08-20 09:51 UTC

Observed FT8 message patterns

Attributed sample
49 messages
Active dates
6 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-19 to -6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 10.

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 9A5CRZ in decoded directed-looking exchanges:

Most frequent locator attributed to 9A5CRZ

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 · 38 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
708 km (approx.)
Last such locator decoded
2026-08-20 09:51 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 UTCBand9A5CRZ S/NCounterpartCounterpart S/NMsgsCapture
08-28 10:35 10m - / -21 CU2AP -14 / - 2 ✓ Closing fragment
08-20 21:24 20m - / -23 EA8UP +8 / - 6 Partial capture
08-20 21:01 20m - / -16 9K2GR 0 / - 2 ✓ Closing fragment
08-20 09:51 20m -10 / +2 MM0TBH -3 / - 7 Partial capture
08-19 13:55 20m - / -2 EA3HKA -15 / - 3 Partial capture
08-13 23:03 40m - / -24 F5RMK -14 / - 2 ✓ Closing fragment
08-13 22:23 40m - / -18 R4ZZ -11 / - 2 Partial capture
08-13 21:02 40m - / -11 HB9TOC -5 / - 2 ✓ Closing fragment
08-13 20:45 40m - / -16 5P1KZX -10 / - 2 Partial capture
08-13 20:32 40m - / -2 Z62NS -8 / - 9 ✓ Closing fragment
06-26 18:41 20m -18 / - BG4TRN - / -8 2 Partial capture
06-26 18:14 20m -18 / - OH7OBJ - / - 4 Partial capture
06-26 13:57 20m - / - TA3NK -11 / - 4 Partial capture
06-26 13:51 20m - / - TA3NK -7 / - 5 Partial capture
06-25 16:22 20m - / - DB1EF -18 / - 2 Partial capture
06-25 16:17 20m - / -4 9A4ZM -13 / - 3 ✓ Closing fragment
06-25 16:14 20m - / -15 DL5KBT -8 / - 3 Partial capture
06-25 16:07 20m - / - DB1EF -14 / - 2 Partial capture
06-23 23:56 20m - / -14 K1HC -8 / - 3 ✓ Closing fragment
06-23 19:24 20m - / -15 PD0HLA -5 / - 2 Partial capture
06-23 19:19 20m - / +4 PD3LKN +3 / - 2 Partial capture
06-23 19:18 20m - / - PD2ARI -12 / - 2 Partial capture
06-23 19:07 20m - / - PD3LKN +6 / - 5 Partial capture
06-23 19:04 20m - / -10 PD0HLA +1 / - 2 Partial capture
06-23 19:01 20m - / - R4FDK -10 / - 4 Partial capture
06-23 18:58 20m - / - PD9JPV -13 / - 4 Partial capture
06-23 18:57 20m - / -12 PD0HLA -2 / - 2 Partial capture
06-23 18:55 20m - / - F5PEG -6 / - 2 Partial capture
06-23 18:25 20m - / - LZ3CB -10 / - 2 ✓ Closing fragment
06-23 17:53 20m - / -17 5Z4VJ -8 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
103530 -14 1163  9A5CRZ CU2AP -21 (x2)
20m 
UTC    dB Audio  Message
095100 -11 2542  MM0TBH 9A5CRZ JN75
095115  -1 2091  9A5CRZ MM0TBH +02
095130  -9 2542  MM0TBH 9A5CRZ JN75
095145  -7 2091  9A5CRZ MM0TBH +02 (x4)
210130  -3 2131  9A5CRZ 9K2GR -16 (x2)
212400  +8 1231  9A5CRZ EA8UP -23 (x6)
40m 
UTC    dB Audio  Message
203445  -7  777  9A5CRZ Z62NS -02 (x5)
204300 -12 1122  9A5CRZ R6DZR -19
204530  -9 2613  9A5CRZ 5P1KZX -16 (x2)
210130  -4 2877  9A5CRZ SP6JIU RR73
210230  -5  928  9A5CRZ HB9TOC -11 (x2)
222330 -12  438  9A5CRZ R4ZZ -18 (x2)
230315 -15 1288  9A5CRZ F5RMK -24 (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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