CT3HU — 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: Madeira Islands Most frequent locator attributed to this token: IM13

Receiver-side FT8 activity involving CT3HU, decoded by SO8OO in southeastern Poland. 492 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 24 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-12.

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 492 FT8 messages attributed to CT3HU as the transmitting token by decoded message structure across 24 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 20 m (21%) and 80 m (11%). Most decodes (96%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

492
Messages attributed
24
UTC dates decoded
86
Active 15-min windows
-11 dB
Estimated median S/N

Bands

First attributed message: 2026-06-07
Last attributed message: 2026-10-12 20:10 UTC

Observed FT8 message patterns

Attributed sample
492 messages
Active dates
24 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-20 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 110, moderate (-15 to -9 dB) 251, strong (≥ -8 dB) 131.

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.

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 CT3HU

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
IM13 · 87 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
3,645 km (approx.)
Last such locator decoded
2026-10-12 20:10 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 UTCBandCT3HU S/NCounterpartCounterpart S/NMsgsCapture
10-12 20:12 40m - / - DL1STF -18 / - 2 Partial capture
10-12 20:12 40m - / - EA5HM -9 / - 3 Partial capture
10-12 20:10 40m - / - TA4EE -4 / - 3 Partial capture
10-12 20:08 40m -14 / - M0YFT - / -16 2 ✓ Closing fragment
10-11 21:23 80m - / -13 DL5MO -10 / - 3 Partial capture
10-11 21:22 80m - / -3 HB9EMX +12 / - 2 ✓ Closing fragment
10-11 21:21 80m - / - IK5CHL 0 / - 5 Partial capture
10-11 21:19 80m - / -16 SM3ULU -10 / - 3 ✓ Closing fragment
10-11 21:17 80m - / -10 F4JYH -22 / - 3 ✓ Closing fragment
10-11 21:17 80m - / - IK5CHL -2 / - 2 Partial capture
10-11 21:11 80m - / -14 DL5MO -1 / - 3 Partial capture
10-11 21:10 80m - / - SM3ULU -12 / - 2 Partial capture
10-11 21:09 80m -12 / - AN5CV - / -18 2 ✓ Closing fragment
10-11 20:41 40m -10 / - Z33ST - / -14 2 ✓ Closing fragment
10-11 20:36 40m -11 / - 9A5AGV - / -17 2 ✓ Closing fragment
10-11 20:33 40m -12 / -17 YU1NTP -13 / -12 6 ✓ Full exchange observed
10-11 20:31 40m -14 / - YU4FQN - / -7 2 ✓ Closing fragment
10-11 20:28 40m - / -6 DK5WL -14 / - 2 Partial capture
10-11 20:27 40m - / - EA4HYO -11 / - 3 Partial capture
10-11 20:24 40m -13 / - YO4AAC - / -18 3 ✓ Closing fragment
10-11 19:59 40m -12 / -26 R6ZA -12 / -15 5 Partial capture
10-11 19:58 40m -14 / -7 Z62NS -13 / -14 9 Partial capture
10-11 19:38 40m - / -15 R6ZA -9 / - 4 Partial capture
10-11 19:33 40m -10 / - TF1EM - / -16 2 Partial capture
10-11 19:28 40m -11 / - OH3SW - / -10 2 ✓ Closing fragment
10-11 19:11 80m - / -15 OZ2LC -4 / - 3 ✓ Closing fragment
10-07 22:33 40m -10 / - HI8WJI - / -12 2 Partial capture
10-07 22:29 40m - / - G1PZS -2 / - 2 Partial capture
10-07 22:28 40m -9 / - YF5NBL - / - 2 ✓ Closing fragment
10-07 22:27 40m -5 / -9 M8PLA +2 / -8 3 Partial capture
10-07 22:25 40m -9 / - BI3AMG - / -20 3 Partial capture
10-07 22:23 40m -8 / - EA1QC - / - 2 ✓ Closing fragment
10-07 22:20 40m -10 / - YD4AWV - / - 2 ✓ Closing fragment
10-07 20:37 40m -9 / - YO3MIB - / -9 3 ✓ Closing fragment
10-07 20:37 40m - / - M7MFK -6 / - 2 Partial capture
10-07 20:35 40m -8 / - UR3VBM - / -19 2 Partial capture
10-07 20:33 40m -8 / - YO3AEP - / - 2 ✓ Closing fragment
10-07 20:30 40m -7 / - YU65AEC - / -5 2 Partial capture
10-07 20:25 40m -6 / - 9A3EYA - / - 2 Partial capture
10-07 20:23 40m -8 / - IU8WQS - / - 2 ✓ Closing fragment
10-07 20:21 40m -7 / - UR3VBM - / -20 3 Partial capture
10-07 20:16 40m - / - 2E0SHD -17 / - 3 Partial capture
10-07 20:12 40m -6 / - SQ9SET - / -14 2 Partial capture
10-07 20:03 80m - / - PA0MUS -7 / - 3 Partial capture
10-07 20:03 80m - / - TA1PB -9 / - 8 Partial capture
10-07 19:59 80m - / -3 AN5CV -10 / - 2 ✓ Closing fragment
10-07 19:52 80m - / -17 DF8XC +15 / - 4 ✓ Closing fragment
10-06 21:40 40m - / - TA3NK -10 / - 8 Partial capture
10-06 21:38 40m -12 / - BD8FWI - / -20 3 Partial capture
10-06 21:37 40m - / - DL9KM -16 / - 6 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
200700 -13 1033  CQ RI CT3HU IM13 (x2)
200815 -12  987  CT3HU G0VAX IO83
200830 -13 1033  M0YFT CT3HU -16 (x2)
200930 -14 1033  CQ RI CT3HU IM13 (x2)
201045  -9 1032  CT3HU TA4EE KM46 (x3)
201245  -8 1037  CT3HU EA5HM IM99
201245 -19 2386  CT3HU DL1STF JN58
201315  -9 1037  CT3HU EA5HM IM99
201315 -17 2385  CT3HU DL1STF JN58
201345 -10 1037  CT3HU EA5HM IM99
10m
UTC    dB Audio  Message
193545 -22 1523  CQ RI CT3HU IM13
193615 -20 1524  DN9MRB CT3HU -01
165445  +4  323  CT3HU CR7BRV R-20 (x2)
162230 -10 2539  CT3HU LZ2EW KN13 (x6)
154945 -16 1095  CQ RI CT3HU IM13
155445 -15 1095  PY1EME CT3HU RR73
80m
UTC    dB Audio  Message
211745 -21  204  CT3HU F4JYH R-10 (x2)
211915  -6  997  CT3HU SM3ULU JP81 (x3)
212115  -5 1924  CT3HU IK5CHL JN53 (x2)
212215 +13  451  CT3HU HB9EMX R-03
212245  +0 2151  CT3HU IK5CHL JN53
212245 +11  451  CT3HU HB9EMX 73
212315  +3 2151  CT3HU IK5CHL JN53
212315  -4 1449  CT3HU DL5MO -13
212345  +0 2151  CT3HU IK5CHL JN53
212345 -16 1449  CT3HU DL5MO -13 (x2)
20m
UTC    dB Audio  Message
143815  -3 1505  CT3HU F1PPH JN07 (x4)
144145 -18 1330  CT3HU M7PTJ IO95
144145  -1 1505  CT3HU F1PPH JN07
144215 -17 1330  CT3HU M7PTJ IO95
144215  -5 1505  CT3HU F1PPH JN07
144245 -14 1330  CT3HU M7PTJ IO95
144245  -8 1505  CT3HU F1PPH JN07
144245  +5 1802  CT3HU EA6Y JM19
144315 -23 1330  CT3HU M7PTJ IO95
144315 -11 1505  CT3HU F1PPH JN07 (x2)
144645 -11  576  CT3HU M8SXX IO91

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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