YC5SD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Indonesia Locator transmitted in a decoded message: OJ01

Receiver-side FT8 activity involving YC5SD, decoded by SO8OO in southeastern Poland. 442 related FT8 messages, 3 CQ messages, observed on 40m, 20m, 10m, across 38 UTC dates. Heard between 2026-04-21 and 2026-06-06.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

442
Related messages
3
CQ messages
38
UTC dates heard
-4 dB
Mean decoder S/N

Bands

20m 40m 10m
First seen: 2026-04-21
Last seen: 2026-06-06 12:06 UTC

Frequent QSO partners observed at SO8OO

Stations YC5SD worked most often, as logged from our receiver:

Activity Heatmap

Locator transmitted by YC5SD

Approximate centre of OJ01, decoded 2026-06-05 13:49 UTC. A transmitted locator is not proof of the operator's permanent location.

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 UTCBandYC5SD S/NCounterpartCounterpart S/NMsgsCapture
06-06 13:56 20m - / -1 LZ2WP +10 / - 2 Partial capture
06-05 13:49 20m -14 / - A92AB - / - 2 Partial capture
06-05 13:44 20m -16 / - RD7P +10 / -26 3 ✓ Closing observed
06-05 13:35 20m -8 / - RX9WN - / -14 3 ✓ Closing fragment
06-05 13:33 20m -2 / -10 DF1KW +4 / -23 7 ✓ Full exchange observed
06-05 13:26 20m - / - YO6LM -3 / - 2 Partial capture
06-05 08:27 20m - / -20 EA3NG -10 / - 2 ✓ Closing fragment
06-04 13:18 20m - / - RW9WT 0 / - 2 Partial capture
06-03 15:41 20m - / - EK1KE -20 / - 2 Partial capture
06-03 15:26 20m - / - EK1KE -20 / - 4 Partial capture
06-03 15:21 20m - / - EK1KE -18 / - 2 Partial capture
06-03 15:16 20m - / - EK1KE -18 / - 2 Partial capture
06-03 15:11 20m - / - EK1KE -17 / - 5 Partial capture
06-02 16:53 20m - / -20 UA3FO -16 / - 2 ✓ Closing fragment
06-02 16:53 20m - / -17 UA4FEN -6 / - 2 Partial capture
06-02 16:49 20m - / - R2EC +8 / - 2 Partial capture
06-02 16:44 20m - / - EA3HYJ -16 / - 2 Partial capture
06-02 16:43 20m -18 / - EA7FMT - / - 2 ✓ Closing fragment
06-02 16:35 20m - / - SV5BYP -2 / - 3 Partial capture
06-02 16:32 20m - / -15 RX6DY -24 / - 2 Partial capture
06-02 16:31 20m - / - 9A4ZM -6 / - 4 Partial capture
06-02 15:28 20m - / - YU2LM -15 / - 2 Partial capture
06-02 14:46 20m - / -7 DK7ZT -8 / - 2 Partial capture
06-02 14:42 20m -10 / -13 LA6OCA -10 / - 3 Partial capture
06-02 14:36 20m -14 / -16 TA1BX -7 / - 3 ✓ Closing observed
06-02 14:31 20m - / -12 HB10GBT +2 / - 2 Partial capture
06-02 14:24 20m - / -18 IK2CMI -3 / - 6 ✓ Closing fragment
06-02 14:24 20m - / - IK3JLT -1 / - 3 Partial capture
06-02 14:23 20m -4 / - KO6MFA - / - 4 Partial capture
06-02 14:21 20m - / - IK2CMI -6 / - 2 Partial capture
06-01 15:22 40m - / -20 OE3KLU +16 / - 4 ✓ Closing fragment
06-01 15:12 40m - / -18 R2BQM -16 / - 3 Partial capture
05-31 14:52 20m -1 / - DL9FA - / -20 3 ✓ Closing fragment
05-31 14:40 10m -8 / - TL8BNW - / - 2 Partial capture
05-31 14:38 10m -17 / - EH8DCC - / -20 2 ✓ Closing fragment
05-31 14:29 20m +3 / - DG9XN - / -21 4 ✓ Closing fragment
05-31 14:26 20m -1 / - SQ5SQF - / - 5 Partial capture
05-31 14:23 20m -9 / - VA7QI - / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
133545  -9  525  RX9WN YC5SD OJ01 (x3)
134445 -17 1272  RD7P YC5SD R-26
134530 +10 1276  YC5SD RD7P RR73
134545 -14 1271  RD7P YC5SD 73
134915 -12 1854  A92AB YC5SD OJ01 (x2)
083945 -12 1377  YC5SD F5SZB IN95
114830  -8 2436  YC5SD R0SAF OO22
121545  +1 2234  YC5SD R0AX RR73
132930  +4 1504  YC5SD UF4S -05
135645 +11 2689  YC5SD LZ2WP -01 (x2)
140600 -11 2716  YC5SD EX8ABQ -05
40m 
UTC    dB Audio  Message
151245 -17 1391  YC5SD R2BQM -18 (x3)
152245 +17 1015  YC5SD OE3KLU -20 (x4)
10m 
UTC    dB Audio  Message
143700 -21 1643  9K2HN YC5SD OJ01
143830 -15 1584  EH8DCC YC5SD R-20 (x2)
144045  -7  489  TL8BNW YC5SD OJ01 (x2)

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.