C21TS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Nauru

Receiver-side FT8 activity involving C21TS, decoded by SO8OO in southeastern Poland. 1,497 related FT8 messages, 11 CQ messages, observed on 80m, 40m, 20m, 10m, across 38 UTC dates. Heard between 2026-04-21 and 2026-07-18.

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

1,497
Related messages
11
CQ messages
38
UTC dates heard
-1 dB
Mean decoder S/N

Bands

First seen: 2026-04-21
Last seen: 2026-07-18 17:10 UTC

Activity Heatmap

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 UTCBandC21TS S/NCounterpartCounterpart S/NMsgsCapture
07-18 19:07 40m - / -9 HA8DX -7 / - 5 ✓ Closing fragment
07-18 19:03 40m - / -9 E72DX -1 / - 3 ✓ Closing fragment
07-18 18:46 40m - / -15 IK0SHH -9 / - 2 ✓ Closing fragment
07-18 09:04 20m - / -17 GM2TT -21 / - 2 Partial capture
07-17 20:44 20m - / -18 S55OO +2 / - 2 Partial capture
07-09 20:02 20m - / -15 PY2GZ -18 / - 3 ✓ Closing fragment
07-07 19:25 20m - / - SV1SAX -10 / - 2 ✓ Closing fragment
07-07 05:05 20m - / - EB5AL -14 / - 4 Partial capture
07-06 16:21 40m - / -19 UD6AVY -16 / - 2 ✓ Closing fragment
06-30 18:53 40m - / - SP3IOE -3 / - 6 Partial capture
06-21 18:37 20m - / -24 II9RICT -4 / - 3 Partial capture
06-21 18:36 20m - / -14 RZ6ALZ -8 / - 2 ✓ Closing fragment
06-21 17:26 20m - / -23 IK0XFD -5 / - 4 Partial capture
06-21 17:13 20m - / -13 R6OAO -22 / - 4 ✓ Closing fragment
06-21 16:53 20m - / -13 YO3AIO -9 / - 3 ✓ Closing fragment
06-21 15:06 20m - / -21 RA3TRR 0 / - 5 ✓ Closing fragment
06-11 16:41 40m - / - E72DX +3 / - 6 Partial capture
06-11 16:34 40m - / -6 YU9A +7 / - 4 ✓ Closing fragment
06-11 16:20 40m - / -15 YT6AAA +1 / - 14 ✓ Closing fragment
06-11 15:36 40m - / - SP1HN +6 / - 4 Partial capture
06-09 14:13 20m - / -14 R7MN +18 / - 2 Partial capture
06-09 11:56 20m - / - R4HMI -15 / - 3 Partial capture
06-09 11:46 20m - / - DN4TG +2 / - 5 Partial capture
06-09 11:40 20m - / - DN4TG 0 / - 2 Partial capture
06-08 19:15 20m - / -14 LZ2PC +4 / - 3 ✓ Closing fragment
06-08 18:10 40m - / -1 OK1EK +19 / - 8 ✓ Closing fragment
06-08 16:59 40m - / -19 RQ7O -6 / - 3 ✓ Closing fragment
06-08 16:34 40m - / +7 UA3IKI -13 / - 2 Partial capture
06-06 15:02 20m - / - IS0KNO +13 / - 3 Partial capture
06-06 14:43 20m - / - I8KRC -1 / - 9 Partial capture
06-06 14:42 20m - / -21 F1SAA +6 / - 5 ✓ Closing fragment
06-06 14:39 20m - / - IZ1RFL -16 / - 2 ✓ Closing fragment
06-06 14:37 20m - / - R3BGU -15 / - 3 Partial capture
06-06 14:24 20m - / - UA3MPA +1 / - 4 Partial capture
06-06 14:12 20m - / -15 RT5C -9 / - 3 ✓ Closing fragment
06-06 14:02 20m - / -21 RT5C 0 / - 7 ✓ Closing fragment
06-06 13:55 20m - / -15 RJ3F 0 / - 3 ✓ Closing fragment
06-06 13:52 20m - / - UA3MPA +6 / - 2 Partial capture
06-06 12:53 20m - / - F8NHF -4 / - 2 ✓ Closing fragment
06-06 12:27 20m - / -17 RZ3ZY +4 / - 2 ✓ Closing fragment
06-06 12:22 20m - / -11 UA0LGF -8 / - 3 ✓ Closing fragment
06-06 11:52 20m - / - DD1OBU -4 / - 3 Partial capture
06-06 11:36 20m - / - R0SAF 0 / - 2 Partial capture
06-04 17:44 80m - / - HB9ECS -4 / - 2 Partial capture
05-30 13:41 20m - / - R9WGT -8 / - 2 Partial capture
05-30 13:35 20m - / - R9WGT -10 / - 4 Partial capture
05-30 13:03 20m - / - YL3QT -7 / - 2 Partial capture
05-30 12:32 20m - / -15 R9MW -4 / - 3 ✓ Closing fragment
05-30 10:33 20m - / -15 R9UDK -14 / - 6 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
154215 -23 1498  C21TS R7CD KN94
162115 -16 1802  C21TS UD6AVY -19 (x2)
164600 -24 1774  C21TS UB4CGR LO21
185415 -13 2520  C21TS LZ3TA KN21
184615  -8 2655  C21TS IK0SHH R-15 (x2)
190345  +0  713  C21TS E72DX JN84 (x3)
190715  -7  971  C21TS HA8DX KN07 (x5)
20m
UTC    dB Audio  Message
065830  -8 1435  C21TS RR73; US3LX <...> -12
050530 -15 2193  C21TS EB5AL IM99 (x4)
192530 -12 1251  C21TS SV1SAX KM17 (x2)
200230 -18 1415  C21TS PY2GZ GG66 (x3)
203915 -16 1720  C21TS IT9PQU JM77
204415  -1 2667  C21TS S55OO JN76 (x2)
090415 -20 2209  C21TS GM2TT -17 (x2)
80m
UTC    dB Audio  Message
174400  -7 2004  C21TS HB9ECS JN37 (x2)

Decoder S/N history by band

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