CX9AU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Uruguay Most frequent locator attributed to this token: GF15

Receiver-side FT8 activity involving CX9AU, decoded by SO8OO in southeastern Poland. 46 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-16 and 2026-08-30.

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 46 FT8 messages attributed to CX9AU as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (78%), followed by 40 m (13%) and 20 m (9%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (78%); the estimated median was -24 dB.

Overview

46
Messages attributed
5
UTC dates decoded
14
Active 15-min windows
-24 dB
Estimated median S/N

Bands

80m · 36 40m · 6 20m · 4
First attributed message: 2026-08-16
Last attributed message: 2026-08-30 01:11 UTC

Observed FT8 message patterns

Attributed sample
46 messages
Active dates
5 UTC dates
Estimated median S/N
-24 dB
Estimated 10th-90th percentile
-24 to -11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 36, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 0.

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 CX9AU 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 CX9AU

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
GF15 · 41 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
12,153 km (approx.)
Last such locator decoded
2026-08-30 01:07 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 UTCBandCX9AU S/NCounterpartCounterpart S/NMsgsCapture
09-08 22:17 40m - / - EA3AAY -8 / - 4 Partial capture
08-30 01:10 80m -24 / -14 RX9WN -1 / - 5 ✓ Closing observed
08-30 01:07 80m - / - DK5WL +4 / - 4 Partial capture
08-30 01:06 80m - / - OK1UOZ 0 / - 4 Partial capture
08-30 01:02 80m - / - DK5WL +6 / - 3 Partial capture
08-30 01:01 80m - / -18 SN5J +14 / - 14 Partial capture
08-30 00:58 80m - / -15 9A4V +12 / - 7 ✓ Closing fragment
08-30 00:56 80m - / - DK5WL 0 / - 3 Partial capture
08-30 00:53 80m - / - 9A4V +16 / - 3 Partial capture
08-30 00:35 40m - / -14 HG0NPJ -10 / - 2 ✓ Closing fragment
08-30 00:31 40m - / - DF7EF -7 / - 10 Partial capture
08-30 00:23 40m - / - R9CB -6 / - 4 Partial capture
08-30 00:17 40m - / - EA1KCN -12 / - 2 Partial capture
08-30 00:15 40m - / - DF7EF +3 / - 9 Partial capture
08-30 00:13 40m - / -7 RD9U -1 / - 3 ✓ Closing fragment
08-30 00:10 40m - / - EA3NE +6 / - 4 Partial capture
08-29 23:40 40m - / - 2E0ROJ -4 / - 8 Partial capture
08-29 23:36 40m - / -15 N0YY -6 / - 3 ✓ Closing fragment
08-29 23:35 40m - / - F4FPR -8 / - 2 Partial capture
08-29 23:34 40m - / -13 K1ZJA -8 / - 3 ✓ Closing fragment
08-29 23:31 40m - / -24 R4ZZ -8 / - 2 Partial capture
08-29 23:31 40m - / - RD7O -1 / - 2 Partial capture
08-29 23:00 60m - / - OG8A -5 / - 3 Partial capture
08-29 22:40 60m - / -1 PE1MHY -11 / - 5 Partial capture
08-29 22:39 60m - / - OH7ML -11 / - 3 Partial capture
08-29 22:38 60m - / - OZ6CM +2 / - 3 Partial capture
08-29 22:35 60m - / - DF2RG +1 / - 7 Partial capture
08-29 22:35 60m - / -13 PE1MHY -10 / - 6 Partial capture
08-29 22:32 160m - / - G0OIL 0 / - 2 Partial capture
08-29 22:31 60m - / - DL4KSD -3 / - 3 Partial capture
08-29 22:31 60m - / - GE7RTI -9 / - 2 Partial capture
08-29 22:31 60m - / - OH1LA -10 / - 8 Partial capture
08-29 02:23 80m - / - WD2E -11 / - 2 Partial capture
08-29 02:21 80m - / -11 VA1TTY -3 / - 2 ✓ Closing fragment
08-29 02:08 80m - / - LB0TH -13 / - 3 Partial capture
08-29 02:08 80m - / -19 R4FDD -2 / - 3 Partial capture
08-29 02:07 80m - / - LA0FA +8 / - 9 Partial capture
08-29 01:26 40m - / -9 RA3TKS +5 / - 3 Partial capture
08-29 01:14 40m - / -17 HI8J 0 / - 2 ✓ Closing fragment
08-29 01:08 40m - / - EA1KCN -7 / - 5 Partial capture
08-29 01:02 40m - / - SA6BZZ -6 / - 2 Partial capture
08-29 00:49 40m - / - S56P -13 / - 2 Partial capture
08-29 00:42 40m - / -20 RZ6AKF +6 / - 4 ✓ Closing fragment
08-29 00:40 40m - / -17 RU6FK -2 / - 3 Partial capture
08-29 00:31 40m - / - R9OAE -10 / - 7 Partial capture
08-28 23:52 40m - / -25 HB9LEU +7 / - 3 Partial capture
08-28 23:46 40m - / - K3SWZ -6 / - 3 Partial capture
08-28 23:41 40m - / -15 G0ORC -2 / - 5 Partial capture
08-28 23:32 40m - / - UB3XCC -3 / - 3 Partial capture
08-28 23:32 40m - / -20 I3LID +10 / - 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
003215  +0 2720  CX9AU DF7EF JO30 (x2)
003415  -7 2024  CX9AU UR8MB KN98
003445 -10 1948  CX9AU DF7EF JO30 (x2)
003545 -13 2441  CX9AU HG0NPJ -14 (x2)
003615 -13 1949  CX9AU DF7EF JO30 (x4)
221715  -8 1339  CX9AU EA3AAY JN11 (x4)
80m 
UTC    dB Audio  Message
010730  -1 1650  CX9AU OK1UOZ JO70 (x3)
010930 +18 2907  CX9AU SN5J -18
010930 +10 1580  CX9AU DK5WL JN39
011000  +0  997  CX9AU RX9WN -14
011000 +18 2907  CX9AU SN5J -18
011000  +5 1580  CX9AU DK5WL JN39
011030  +1  997  CX9AU RX9WN -14
011030 +19 2907  CX9AU SN5J -18
011030  +4 1580  CX9AU DK5WL JN39
011100  -2  997  CX9AU RX9WN RR73
011115 -24  282  RX9WN CX9AU 73
011130  +6  283  CX9AU IK6DLK JN63
011145  -3  997  CX9AU RX9WN -16
60m 
UTC    dB Audio  Message
223815  +8 1859  CX9AU DF2RG JN69
223845  +4 1200  CX9AU OZ6CM JO55 (x2)
223915 -13 1734  CX9AU OH7ML KP42 (x2)
223945  +2 1257  CX9AU OZ6CM JO55
224015 -12 1734  CX9AU OH7ML KP42
224045 -13 1196  CX9AU PE1MHY -01 (x5)
230000  -5 1871  CX9AU OG8A KP22 (x3)
160m 
UTC    dB Audio  Message
223245  +0  930  CX9AU G0OIL IO93 (x2)
20m 
UTC    dB Audio  Message
235315 -10 2653  CX9AU DL9UXF JO71
000515  +2 2170  CX9AU DL3RAJ JN68 (x6)
003000 -12  289  CQ CX9AU GF15 (x2)
003115 -10 2475  CX9AU KR4EBE EL98 (x3)
003530 -11  290  CQ CX9AU GF15 (x2)
004915  -9 1117  CX9AU ON3CCM JO10
10m 
UTC    dB Audio  Message
150100 -19 2124  CX9AU IZ0RPS R-25 (x3)
162545 -13 1191  CX9AU RX3ASQ KO95 (x5)

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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