CU3AC — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Azores Most frequent locator attributed to this token: HM68

Receiver-side FT8 activity involving CU3AC, decoded by SO8OO in southeastern Poland. 349 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-22.

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 349 FT8 messages attributed to CU3AC as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (69%), followed by 40 m (22%) and 80 m (9%). Most decodes (97%) 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 (64%); the estimated median was -6 dB.

Overview

349
Messages attributed
25
UTC dates decoded
55
Active 15-min windows
-6 dB
Estimated median S/N

Bands

80m · 33 40m · 76 20m · 240
First attributed message: 2026-06-06
Last attributed message: 2026-10-22 21:41 UTC

Observed FT8 message patterns

Attributed sample
349 messages
Active dates
25 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-15 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 95, strong (≥ -8 dB) 223.

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 CU3AC 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 CU3AC

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
HM68 · 129 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
4,011 km (approx.)
Last such locator decoded
2026-10-22 21:40 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 UTCBandCU3AC S/NCounterpartCounterpart S/NMsgsCapture
10-22 21:39 40m -14 / - W2HTS/P - / -18 4 ✓ Closing fragment
09-13 22:26 40m -1 / - W4BRY - / -10 5 ✓ Closing fragment
09-13 22:24 40m -5 / - RD9M/3 - / -12 2 Partial capture
09-13 22:22 40m -4 / - R3VA - / -10 3 ✓ Closing fragment
09-13 22:18 40m -6 / - VA3LG - / -10 8 ✓ Closing fragment
09-13 21:53 40m 0 / - PD2MAC/P - / -10 2 Partial capture
09-09 21:05 40m -11 / - 9A60CBM - / - 2 Partial capture
09-08 22:23 40m -2 / - Z68PX - / -17 6 ✓ Closing fragment
09-08 22:15 40m 0 / - CE8VSO - / -14 2 ✓ Closing fragment
09-08 22:10 40m -1 / - N3S - / - 2 Partial capture
09-05 21:50 40m - / -12 LA1KUA +7 / - 3 ✓ Closing fragment
09-04 21:58 80m -18 / -13 RI1FJL -20 / -19 4 ✓ Full exchange observed
09-04 21:48 80m -18 / - DU2W - / - 2 Partial capture
09-02 22:21 80m - / - MM0DXL -23 / - 4 Partial capture
09-02 22:17 80m -24 / - 5Z4VJ - / - 3 Partial capture
09-02 22:12 80m - / - EA3EDU -12 / - 2 Partial capture
09-01 18:32 40m - / -10 F8MRQ +5 / - 3 Partial capture
09-01 18:25 40m - / -12 M9MKE -10 / - 9 ✓ Closing fragment
09-01 18:24 40m - / -16 DJ0MAB +2 / - 3 ✓ Closing fragment
09-01 18:22 40m - / -13 ON5MX 0 / - 3 ✓ Closing fragment
09-01 18:20 40m - / -17 G6MTI -9 / - 3 Partial capture
09-01 18:20 40m - / -13 DJ0MAB +4 / - 4 Partial capture
08-28 21:54 80m - / -11 G8BCG -8 / - 2 ✓ Closing fragment
08-28 21:36 80m -10 / -18 IU8PYF -9 / - 2 ✓ Closing observed
08-28 21:35 80m -14 / -4 EA5S -16 / +6 4 ✓ Full exchange observed
08-28 21:34 80m -13 / -13 SO1CJ +14 / -14 7 ✓ Full exchange observed
08-28 21:31 80m -9 / -3 DL4BCY 0 / -9 6 ✓ Full exchange observed
08-28 21:30 80m -12 / -15 DO1DX -5 / -8 5 ✓ Full exchange observed
08-28 21:29 80m -9 / -15 OZ1HPS -7 / +2 5 ✓ Full exchange observed
08-28 21:26 80m -7 / - RU9FM -12 / -19 6 ✓ Closing observed
08-28 21:18 80m - / - DL4BCY -4 / - 2 Partial capture
08-28 21:16 80m -14 / -14 UF4S +6 / -3 4 ✓ Full exchange observed
08-28 21:01 40m -10 / - OZ5FN - / -12 2 ✓ Closing fragment
08-28 20:58 40m -10 / - EA5S - / +9 2 ✓ Closing fragment
08-28 20:58 40m - / -3 S57MPU +7 / - 5 Partial capture
08-28 20:56 40m -10 / -12 UF1A -10 / -2 6 ✓ Full exchange observed
08-28 20:55 40m -14 / - F4DZF/P - / - 2 Partial capture
08-28 18:31 20m - / - EA5JLN +5 / - 3 Partial capture
08-28 18:22 20m -11 / - <...> - / - 2 Partial capture
08-24 23:00 40m -8 / - YD2VTS - / - 2 Partial capture
08-24 22:58 40m -10 / - N8BTR - / -17 3 ✓ Closing fragment
08-24 22:57 40m -8 / - KO4PRE - / +8 2 ✓ Closing fragment
08-24 22:53 40m -10 / - YO3HPC/P - / +7 2 Partial capture
08-21 18:43 20m -4 / - 5H6PJ - / -5 2 ✓ Closing fragment
08-21 18:35 20m -10 / - HA7KJ - / -3 4 Partial capture
08-21 18:33 20m - / - DM2BR +4 / - 2 Partial capture
08-21 18:33 20m - / - IK4LZH -4 / - 2 Partial capture
08-21 18:32 20m -8 / - VA3ROC - / -5 2 ✓ Closing fragment
08-21 18:28 20m -8 / - BH8PYF - / -19 3 Partial capture
08-21 18:28 20m -7 / - M9OOS -14 / -16 5 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
222230  -3  409  R3VA CU3AC -15 (x2)
222445  -7  409  RD9M/3 CU3AC HM68 (x2)
222615  -4  409  W4BRY CU3AC HM68 (x2)
222700  -9 1334  CU3AC GM0EZP -12
222715  -1  409  W4BRY CU3AC HM68 (x3)
222945  -2  409  LU2ETR CU3AC -15
213945 -13 1240  W2HTS/P CU3AC HM68 (x4)
10m 
UTC    dB Audio  Message
151300 -24 1731  CU3AC C5R +01
151330 -21 1731  CU3AC RR73; IW9BHQ <...> -20
80m 
UTC    dB Audio  Message
221315  -9  676  CU3AC EA3EDU JN01
221730 -24 1013  5Z4VJ CU3AC HM68 (x3)
222115 -24 1996  CU3AC MM0DXL IO75 (x4)
214830 -19  697  DU2W CU3AC HM68 (x2)
215815 -20  330  CU3AC RI1FJL -13
215830 -17  804  RI1FJL CU3AC R-19
215845 -14  330  CU3AC RR73; DL4SKH <...> -06
215900 -18  804  RI1FJL CU3AC R-19 (x2)
20m 
UTC    dB Audio  Message
183415  -2  396  CU3AC PD3LKN JO22
183415  +3 1984  CU3AC DM2BR JO51
183500  -8  396  JF1LMB CU3AC RR73
183530 -11  396  HA7KJ CU3AC -03 (x4)
183830 -11  396  RL3AM CU3AC 73
184345  -3  408  5H6PJ CU3AC R-05 (x2)
182215 -10 1764  <...> CU3AC +13 (x2)
183115  +5 1431  CU3AC EA5JLN IM99 (x3)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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