CU2JX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Azores Most frequent locator attributed to this token: HM77

Receiver-side FT8 activity involving CU2JX, decoded by SO8OO in southeastern Poland. 399 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-20.

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 399 FT8 messages attributed to CU2JX as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (98%), followed by 40 m (2%). Most decodes (84%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

399
Messages attributed
12
UTC dates decoded
59
Active 15-min windows
-13 dB
Estimated median S/N

Bands

40m · 7 20m · 392
First attributed message: 2026-06-07
Last attributed message: 2026-09-20 03:18 UTC

Observed FT8 message patterns

Attributed sample
399 messages
Active dates
12 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-19 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 129, moderate (-15 to -9 dB) 200, strong (≥ -8 dB) 70.

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 CU2JX 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 CU2JX

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
HM77 · 285 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
3,932 km (approx.)
Last such locator decoded
2026-09-20 03:18 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 UTCBandCU2JX S/NCounterpartCounterpart S/NMsgsCapture
09-20 07:04 40m - / +1 ON1DGN -12 / - 2 Partial capture
09-20 06:28 40m - / - HB9ACA -12 / - 3 Partial capture
09-20 06:14 40m - / - PD0WL -13 / - 3 Partial capture
09-20 06:03 40m - / - SA4AGM -6 / - 3 Partial capture
09-20 05:57 40m - / - M8FQT -8 / - 5 Partial capture
09-20 05:50 40m - / -3 M8FQT -6 / - 4 Partial capture
09-20 05:23 40m - / +7 GJ0KYZ -5 / - 3 Partial capture
09-20 05:19 40m - / +1 ON1DGN -7 / - 2 Partial capture
09-20 05:09 40m - / - IT9LCJ -12 / - 2 Partial capture
09-20 04:52 40m - / -17 HB9AKP -12 / - 2 Partial capture
09-20 04:49 40m - / - DC9TS -7 / - 4 ✓ Closing fragment
09-20 04:40 40m - / -13 RU4SO -13 / - 5 Partial capture
09-20 04:36 40m - / +3 ON1DGN -11 / - 2 Partial capture
09-20 04:32 40m - / -19 DD1OO 0 / - 3 Partial capture
09-20 04:32 40m - / - RQ3M -8 / - 2 Partial capture
09-20 04:25 40m - / - DL8TV +11 / - 3 Partial capture
09-20 04:24 40m - / - F4PCM -5 / - 2 ✓ Closing fragment
09-20 03:37 40m - / -13 ON1DGN -1 / - 4 Partial capture
09-20 03:30 40m - / -19 9A5WA -14 / - 4 ✓ Closing fragment
09-20 03:06 40m - / -9 ON1DGN -2 / - 4 Partial capture
09-20 02:29 40m -17 / - UA3IAG - / -11 3 ✓ Closing fragment
09-20 02:18 40m - / -17 RY3F +6 / - 6 ✓ Closing fragment
09-20 02:07 40m - / -22 UA3GDJ +7 / - 3 ✓ Closing fragment
09-20 02:06 40m - / -13 ON1DGN -1 / - 3 Partial capture
09-20 01:52 40m - / -30 ON8WR -9 / - 3 ✓ Closing fragment
09-20 01:46 40m - / -4 KB1G -6 / - 2 Partial capture
09-20 01:44 40m - / - KC1UBT -3 / - 3 Partial capture
09-20 01:41 40m - / - RN6HK -6 / - 4 Partial capture
09-20 01:33 40m - / -7 KY2J -3 / - 3 ✓ Closing fragment
09-20 01:21 40m - / - NY9H -15 / - 2 Partial capture
09-20 01:18 40m - / - K4SO -11 / - 5 Partial capture
09-20 01:08 40m - / -2 W1RQ 0 / - 3 ✓ Closing fragment
09-14 22:09 60m - / - DL7UKM +12 / - 3 Partial capture
09-14 22:07 60m - / - LB9VH -10 / - 7 Partial capture
09-14 22:02 60m - / -11 LA9JKA -11 / - 7 ✓ Closing fragment
09-14 22:01 60m - / - LB9VH -8 / - 5 Partial capture
09-14 21:58 60m - / -15 VE1YX -13 / - 5 ✓ Closing fragment
09-14 00:27 40m - / -11 WZ8S -10 / - 3 Partial capture
09-09 06:56 40m - / - IK2ZJR -3 / - 2 Partial capture
09-09 06:45 40m - / -16 GJ0KYZ -8 / - 2 Partial capture
09-09 06:01 40m - / - PD1AC -18 / - 6 Partial capture
08-31 20:06 20m - / - M7DBB +4 / - 4 Partial capture
08-31 19:39 20m - / - DL1R +6 / - 9 Partial capture
08-31 19:27 20m -17 / - HB9GUI - / -15 3 Partial capture
08-31 18:55 20m - / -16 DG5PW -8 / - 3 ✓ Closing fragment
08-31 18:54 20m - / - CT2FXY 0 / - 3 Partial capture
08-31 18:43 20m - / - PD7JLP +3 / - 5 Partial capture
08-31 18:38 20m - / - G1CCG -9 / - 2 Partial capture
08-31 18:11 20m - / - LA2GCA -9 / - 3 Partial capture
08-31 18:05 20m - / - F4DWE -7 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
055915  -5 2344  CU2JX M8FQT IO93 (x2)
060315 -11  666  CU2JX SA4AGM JP70 (x3)
061015  -7 1038  CU2JX ON1DGN -02
061445 -13 2041  CU2JX PD0WL JO21 (x3)
062845 -12 1840  CU2JX HB9ACA JN36 (x4)
070445 -13 1038  CU2JX ON1DGN +01 (x2)
60m 
UTC    dB Audio  Message
220330  -9 1626  CU2JX LA9JKA R-11 (x4)
220715 -11 2025  CU2JX LB9VH JP32 (x5)
220915 +13 2544  CU2JX DL7UKM JO62
220945  -9 2025  CU2JX LB9VH JP32
220945 +11 2453  CU2JX DL7UKM JO62
221015  -8 2025  CU2JX LB9VH JP32
221015 +12 2453  CU2JX DL7UKM JO62
025515  -9 2652  CU2JX KZ4NS -05
20m 
UTC    dB Audio  Message
192800 -13  816  HB9GUI CU2JX -15 (x2)
193945  +5 2587  CU2JX DL1R JN58 (x9)
200615  -3 1096  CU2JX M7DBB IO92 (x4)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee