BD3CT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: China Most frequent locator attributed to this token: OM89

Receiver-side FT8 activity involving BD3CT, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-29 and 2026-08-24.

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 50 FT8 messages attributed to BD3CT as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -8 dB; no usual signal pattern is inferred.

Overview

50
Messages attributed
2
UTC dates decoded
6
Active 15-min windows
-8 dB
Estimated median S/N

Bands

First attributed message: 2026-07-29
Last attributed message: 2026-08-24 22:02 UTC

Observed FT8 message patterns

Attributed sample
50 messages
Active dates
2 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-13 to -2 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 29.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Most frequent locator attributed to BD3CT

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
OM89 · 18 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,093 km (approx.)
Last such locator decoded
2026-08-24 22:02 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 UTCBandBD3CT S/NCounterpartCounterpart S/NMsgsCapture
08-25 12:26 20m - / - PD9OH 0 / - 2 Partial capture
08-24 22:44 20m - / -13 DL3RAJ -15 / - 5 Partial capture
08-24 22:28 20m - / -12 EA7AQY +1 / - 3 ✓ Closing fragment
08-24 22:07 20m - / - DL1R +6 / - 8 Partial capture
08-24 22:07 20m - / -10 IQ4JO +13 / - 3 ✓ Closing fragment
08-24 22:03 20m - / -15 PD3RH -9 / - 3 Partial capture
08-24 22:01 20m -12 / - PY3TP - / -11 2 ✓ Closing fragment
08-24 22:00 20m -10 / -11 CT2HVF +15 / -6 5 ✓ Full exchange observed
08-24 21:53 20m -5 / -17 F4MZI -24 / -13 3 Partial capture
08-24 21:50 20m -5 / - 9A4ZM - / -15 2 ✓ Closing fragment
08-24 21:49 20m -2 / - SP6FME - / -12 2 ✓ Closing fragment
08-24 21:48 20m -4 / -3 F4IBJ -10 / -2 3 ✓ Full exchange observed
08-24 21:47 20m -4 / - 9K2KU - / - 2 Partial capture
08-24 21:46 20m -4 / - YO5OHY - / - 2 Partial capture
08-24 21:44 20m -11 / - M0LAD - / -14 3 Partial capture
08-24 21:42 20m -10 / - TJ1GD - / -14 4 ✓ Closing fragment
08-24 21:41 20m -13 / - PY1AX -11 / -5 3 ✓ Closing observed
08-24 21:40 20m -9 / -13 YT1DDL +12 / -7 4 ✓ Full exchange observed
08-24 21:39 20m -10 / -11 CT1BFP -5 / -3 4 ✓ Full exchange observed
08-24 21:38 20m -9 / -7 DL1ERZ +7 / - 4 ✓ Closing observed
08-24 21:36 20m -7 / - PY3IP - / -11 3 ✓ Closing fragment
08-18 10:31 20m - / -15 ON6AA +11 / - 3 ✓ Closing fragment
08-11 12:36 20m - / -19 RU3QR -22 / - 6 Partial capture
08-10 21:31 20m - / -12 F5NBQ -8 / - 2 ✓ Closing fragment
08-10 21:26 20m - / -24 OY5T -22 / - 3 Partial capture
08-09 13:02 20m - / - ON6AA -18 / - 2 Partial capture
07-29 21:32 20m - / -14 EA5FIF -4 / - 2 ✓ Closing fragment
07-29 21:08 20m - / -16 EA5FQ -12 / - 3 ✓ Closing fragment
07-29 20:45 20m -4 / - R2EA/P - / -14 3 ✓ Closing fragment
07-29 20:44 20m -4 / - T77RN - / -9 2 Partial capture
07-29 20:35 20m - / -10 EA3BIC -3 / - 5 ✓ Closing fragment
07-28 14:51 20m - / -14 R4AC -2 / - 6 Partial capture
07-28 13:47 20m - / -14 UA3ZZ 0 / - 3 ✓ Closing fragment
07-28 13:35 20m - / - RA4ABH +1 / - 3 Partial capture
07-26 23:09 20m - / -10 EA7KGJ -5 / - 2 Partial capture
07-26 22:24 20m - / -14 5Z4VJ -19 / - 2 Partial capture
07-26 22:18 20m - / -14 EA3HMM -9 / - 5 Partial capture
07-26 22:02 20m - / -14 HA1BF 0 / - 2 ✓ Closing fragment
07-23 21:44 20m - / -15 EA4HGI -9 / - 2 Partial capture
07-23 21:43 20m - / -14 EA1AOC -5 / - 3 ✓ Closing fragment
07-23 13:48 20m - / -7 UA3GJM -15 / - 2 ✓ Closing fragment
07-22 21:34 20m - / -14 F5IDJ -5 / - 2 ✓ Closing fragment
07-22 21:22 20m - / - CT1EDA -10 / - 2 ✓ Closing fragment
07-22 21:06 20m - / - DG5PW -13 / - 2 Partial capture
07-22 13:11 20m - / - PD0DEX -8 / - 9 ✓ Closing fragment
07-22 13:11 20m - / -2 RA9LL -8 / - 3 ✓ Closing fragment
07-21 14:09 20m - / -8 DM3NA -11 / - 3 Partial capture
07-20 16:10 20m - / - GJ0KYZ -4 / - 2 ✓ Closing fragment
07-20 16:03 20m - / -16 UA4FEN +4 / - 3 ✓ Closing fragment
07-20 15:12 20m - / -6 RG5A -2 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m
UTC    dB Audio  Message
221000  -8 2658  BD3CT DL1R JN58 (x3)
222800  -2  579  BD3CT EA7AQY -12 (x3)
224015 -24 2022  BD3CT MW1CFA -07
224415 -14 2184  BD3CT DL3RAJ -13 (x5)
122245 -11  579  BD3CT K1HTV FM18
122615  +8  578  BD3CT PD9OH JO21 (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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