YB1CDA — 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: Indonesia Most frequent locator attributed to this token: OI33

Receiver-side FT8 activity involving YB1CDA, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-21 and 2026-08-25.

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 68 FT8 messages attributed to YB1CDA as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (78%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

68
Messages attributed
5
UTC dates decoded
15
Active 15-min windows
-12 dB
Estimated median S/N

Bands

20m · 68
First attributed message: 2026-08-21
Last attributed message: 2026-08-25 15:20 UTC

Observed FT8 message patterns

Attributed sample
68 messages
Active dates
5 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-22 to -8 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 38, strong (≥ -8 dB) 12.

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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with YB1CDA in decoded directed-looking exchanges:

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 YB1CDA

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
OI33 · 47 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
10,219 km (approx.)
Last such locator decoded
2026-08-25 15:20 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 UTCBandYB1CDA S/NCounterpartCounterpart S/NMsgsCapture
08-25 15:19 20m -9 / - KY0R - / - 3 Partial capture
08-25 15:17 20m -10 / -11 TF1A -2 / -8 5 ✓ Full exchange observed
08-25 15:12 20m - / - F4IZO -2 / - 11 Partial capture
08-25 15:09 20m -9 / - KJ7WLL - / -22 4 ✓ Closing fragment
08-25 15:05 20m -8 / - AG7HY - / - 2 Partial capture
08-25 13:46 20m -14 / - KY0R - / -23 4 Partial capture
08-24 15:38 20m -10 / - W6CKC - / - 4 Partial capture
08-24 15:27 20m - / -6 IH9YMC -7 / - 3 ✓ Closing fragment
08-24 15:22 20m - / - IU8TIS +8 / - 3 Partial capture
08-24 15:09 20m - / - PE1NPS -7 / - 3 Partial capture
08-24 15:05 20m -12 / - K7AGE - / -13 4 Partial capture
08-24 14:55 20m -8 / - KM7BQB - / -15 5 ✓ Closing fragment
08-24 14:45 20m - / - DL1GLO +14 / - 4 Partial capture
08-24 14:42 20m - / - DL1GLO +14 / - 2 Partial capture
08-24 08:11 20m - / -19 UT7UJ -8 / - 4 Partial capture
08-23 18:46 20m - / -5 R2BQM -12 / - 6 Partial capture
08-23 18:45 20m -12 / - 7X2KF - / -12 2 ✓ Closing fragment
08-23 13:06 20m -16 / - KJ5PTH - / - 7 Partial capture
08-23 13:02 20m - / - R2DN -7 / - 5 Partial capture
08-23 13:01 20m - / -12 RX6DY -2 / - 4 Partial capture
08-23 12:55 20m - / -13 RX6DY -10 / - 2 Partial capture
08-22 12:18 20m - / - N3FCP -10 / - 2 Partial capture
08-22 01:04 20m - / -9 SV5BYP -3 / - 2 ✓ Closing fragment
08-22 00:54 20m -22 / - 8P6GE - / - 6 Partial capture
08-22 00:48 20m -21 / - 8P6GE - / - 5 Partial capture
08-21 23:43 20m -12 / - 9Y4C - / -15 3 ✓ Closing fragment
08-21 14:58 20m -10 / - XV2DA - / -14 6 ✓ Closing fragment
08-21 13:43 20m - / - SP8AJK -14 / - 2 Partial capture
08-21 13:22 20m - / - R4CES +2 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
151430  -1 1708  YB1CDA F4IZO JN18 (x5)
151700  -8 1777  TF1A YB1CDA OI33
151700  -9 1709  YB1CDA F4IZO JN18
151715  -1 1164  YB1CDA TF1A -11
151730 -12 1777  TF1A YB1CDA R-08
151745  -2 1164  YB1CDA TF1A RR73
151800 -11 1776  TF1A YB1CDA 73
151815 -17  940  YB1CDA G8IXM JO02
151900  -8 1775  KY0R YB1CDA OI33 (x3)

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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