YC5NCT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Indonesia Most frequent locator attributed to this token: OJ00

Receiver-side FT8 activity involving YC5NCT, decoded by SO8OO in southeastern Poland. 16 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-09-22.

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 16 FT8 messages attributed to YC5NCT as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (63%), followed by 20 m (38%). In this small sample, the estimated median decoder S/N was -21 dB; no usual signal pattern is inferred.

Overview

16
Messages attributed
3
UTC dates decoded
8
Active 15-min windows
-21 dB
Estimated median S/N

Bands

First attributed message: 2026-06-11
Last attributed message: 2026-09-22 15:48 UTC

Observed FT8 message patterns

Attributed sample
16 messages
Active dates
3 UTC dates
Estimated median S/N
-21 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 0.

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 YC5NCT

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
OJ00 · 6 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
9,195 km (approx.)
Last such locator decoded
2026-09-22 15:48 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 UTCBandYC5NCT S/NCounterpartCounterpart S/NMsgsCapture
09-22 17:13 40m - / - 9A5AZK +4 / - 2 Partial capture
09-22 17:12 40m - / - HB9ELE +6 / - 4 ✓ Closing fragment
09-22 17:10 40m - / -11 UR3LM +10 / - 3 ✓ Closing fragment
09-22 17:08 40m - / -13 G0CUZ -9 / - 4 ✓ Closing fragment
09-22 17:03 40m - / - YO2LGK -13 / - 4 Partial capture
09-22 17:03 40m - / - SV1DKR -6 / - 2 Partial capture
09-22 17:01 40m - / -12 YO9PH +5 / - 3 ✓ Closing fragment
09-22 17:00 40m - / -18 PE1NPS -9 / - 4 ✓ Closing fragment
09-22 16:59 40m - / - SV1DKR -4 / - 2 Partial capture
09-22 16:56 40m - / -14 SD5X -2 / - 2 ✓ Closing fragment
09-22 16:56 40m - / - F1HFP -9 / - 2 Partial capture
09-22 16:01 40m - / - RG5A 0 / - 4 Partial capture
09-22 16:01 40m - / -11 SN4K +2 / - 6 Partial capture
09-22 15:58 40m - / - R1NBG -13 / - 2 Partial capture
09-22 15:55 40m - / -18 RC6OX -13 / - 2 ✓ Closing fragment
09-22 15:55 40m - / -12 UA3GX -8 / - 4 ✓ Closing fragment
09-22 15:54 40m - / -15 YO9PH +6 / - 2 Partial capture
09-22 15:47 40m - / - IC8TEM -3 / - 24 Partial capture
09-22 15:40 40m - / - UA6AFE +4 / - 2 Partial capture
09-22 15:38 40m - / -20 R3TH -13 / - 3 Partial capture
09-22 15:22 40m -19 / - LZ1GC -1 / +3 4 ✓ Closing observed
09-22 15:20 40m -16 / -23 IK2OPW -8 / -23 5 ✓ Full exchange observed
09-22 15:17 40m - / -25 IK2OPW -8 / - 2 Partial capture
09-22 15:17 40m - / -15 IN3ADG -8 / - 7 Partial capture
09-22 14:50 40m - / -15 HA7TM +13 / - 3 ✓ Closing fragment
09-22 14:47 40m - / -8 UR4CU +2 / - 2 ✓ Closing fragment
09-22 14:45 40m - / - E70SZ +5 / - 3 Partial capture
09-22 14:43 40m - / -15 YO7CFD +2 / - 2 ✓ Closing fragment
09-22 14:22 40m - / -15 RZ7KR +1 / - 5 ✓ Closing fragment
09-22 14:05 40m - / -10 RD6OZ -9 / - 3 ✓ Closing fragment
09-22 13:25 40m - / -15 RY3D +2 / - 2 Partial capture
09-11 22:29 40m - / - RA3ZH -9 / - 3 Partial capture
09-11 22:27 40m - / -14 F1PBZ -5 / - 3 Partial capture
09-11 22:22 40m - / -16 PY7XC -11 / - 2 ✓ Closing fragment
09-11 22:21 40m - / -21 II9IAGM -4 / - 2 Partial capture
09-11 22:12 40m - / - F4MBU -16 / - 2 Partial capture
09-11 22:06 40m - / -23 UB0SMX/P 0 / - 2 Partial capture
08-29 04:04 20m - / - RC6OU +6 / - 3 Partial capture
07-11 16:01 40m - / -11 RD7LC -18 / - 2 Partial capture
07-10 10:26 10m - / - F9SS +10 / - 9 Partial capture
07-10 08:21 20m - / -15 EA7ALL -21 / - 4 ✓ Closing fragment
07-06 22:20 20m - / -16 EA1IOK -4 / - 3 ✓ Closing fragment
07-06 16:47 20m - / - UT5ZC -19 / - 3 Partial capture
07-06 15:52 20m - / -14 DM5WGL -14 / - 4 ✓ Closing fragment
07-06 15:32 20m - / -18 DL1PAB -20 / - 2 Partial capture
07-06 15:18 20m - / -16 PD8RUK -14 / - 3 Partial capture
07-06 15:06 20m - / -14 PD8RUK -15 / - 12 Partial capture
07-06 14:56 20m - / -19 IU3VHR +3 / - 3 Partial capture
07-06 14:53 20m - / - R9FFZ -10 / - 2 Partial capture
07-06 14:23 20m - / -16 PD8RUK -11 / - 9 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
170915  -9 1151  YC5NCT G0CUZ IO82 (x2)
171015  +8 1205  YC5NCT UR3LM KN89
171015 -10 1151  YC5NCT G0CUZ 73
171045 +11 1205  YC5NCT UR3LM R-11 (x2)
171115  -8 2198  YC5NCT RC9WC -17
171215  +6  739  YC5NCT HB9ELE JN47 (x3)
171315  +7  715  YC5NCT 9A5AZK JN75 (x2)
171415  +0  739  YC5NCT HB9ELE 73
171445  +0 2793  YC5NCT IC8TEM JN70
171515 -10 2634  YC5NCT ES5RY RR73
20m
UTC    dB Audio  Message
170445 -11 2308  YC5NCT R2GDV R-26
171115  -7  399  YC5NCT R5DT -18
171245 -12 1677  YC5NCT DA1VID JO31
222045  -6  521  YC5NCT EA1IOK IN62 (x3)
224330 -10 2799  YC5NCT OK4FX 73
082130 -19 1531  YC5NCT EA7ALL IM88 (x4)
085315 -21 1977  YC5NCT EA8DQE IL27
040400  +6 1351  YC5NCT RC6OU KN98 (x3)
10m
UTC    dB Audio  Message
102630  +5  425  YC5NCT F9SS JN18 (x9)
160m
UTC    dB Audio  Message
182900  -6 1503  YC5NCT DL8OH 73

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