YO5COG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN16

Receiver-side FT8 activity involving YO5COG, decoded by SO8OO in southeastern Poland. 55 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-18.

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 55 FT8 messages attributed to YO5COG as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (85%), followed by 80 m (13%) and 20 m (2%). Most decodes (76%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

55
Messages attributed
12
UTC dates decoded
18
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 7 40m · 47 20m · 1
First attributed message: 2026-06-08
Last attributed message: 2026-09-18 02:42 UTC

Observed FT8 message patterns

Attributed sample
55 messages
Active dates
12 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-17 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 24.

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 YO5COG 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 YO5COG

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
KN16 · 4 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
393 km (approx.)
Last such locator decoded
2026-07-13 14:29 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 UTCBandYO5COG S/NCounterpartCounterpart S/NMsgsCapture
09-18 02:41 80m +4 / -2 PA4G -4 / -3 5 ✓ Full exchange observed
09-18 02:37 80m +11 / +3 ON1JP -17 / -14 7 Partial capture
09-18 02:36 80m - / -9 RD9M/3 -1 / - 3 ✓ Closing fragment
09-18 02:32 80m +10 / -2 DL5DQZ +4 / -6 8 ✓ Full exchange observed
09-12 00:25 40m - / -14 8Z1IT -5 / - 2 Partial capture
09-08 03:46 40m - / -16 RX6ABW -7 / - 2 ✓ Closing fragment
09-08 03:45 40m - / - RA4FUT 0 / - 2 Partial capture
09-07 06:01 40m -16 / -8 DL3HN -16 / - 3 ✓ Closing observed
09-07 05:59 40m - / -11 RJ6ON -1 / - 2 ✓ Closing fragment
09-07 05:51 40m -5 / -14 F5MOO -2 / - 3 ✓ Closing observed
09-07 05:50 40m -18 / - LZ5UY -11 / - 2 ✓ Closing observed
09-06 03:28 40m - / - PA0KGB +4 / - 4 Partial capture
09-06 03:26 40m - / -14 F1PBZ -2 / - 4 Partial capture
09-06 03:14 40m - / -8 SY1BKQ 0 / - 2 ✓ Closing fragment
09-06 02:57 40m - / -10 RA6FRI -2 / - 2 ✓ Closing fragment
07-27 04:30 40m - / -9 9A2L -6 / - 2 ✓ Closing fragment
07-26 06:07 40m - / +7 YO6LRV -9 / - 7 ✓ Closing fragment
07-25 05:20 20m - / -6 W4PSK -15 / - 3 Partial capture
07-24 13:56 10m - / - PD9FLX -5 / - 3 Partial capture
07-23 05:36 40m -10 / -16 SQ9SET -5 / -10 4 Partial capture
07-18 05:51 40m - / +3 <...> -8 / - 2 Partial capture
07-18 05:45 20m - / - SV2HTW -4 / - 2 ✓ Closing fragment
07-16 06:47 20m - / -1 F6JON/QRP -10 / - 2 Partial capture
07-15 05:44 20m - / - RQ7R -12 / - 2 ✓ Closing fragment
07-14 15:09 40m - / -13 OE3KJO -18 / - 2 ✓ Closing fragment
07-14 07:23 20m - / -7 PA0LDE -16 / - 6 Partial capture
07-14 07:22 20m - / -3 HB9ACA -2 / - 2 ✓ Closing fragment
07-14 07:21 20m - / - F4HSB -16 / - 3 ✓ Closing fragment
07-13 06:54 20m - / - OK1DBE -2 / - 3 Partial capture
07-13 06:54 20m - / - SP3JHY -10 / - 3 Partial capture
07-13 06:52 20m - / - DL2FX -16 / - 4 Partial capture
07-13 06:52 20m - / -16 IQ4JO -16 / - 2 ✓ Closing fragment
07-13 04:33 20m - / -10 R7RZ -15 / - 2 ✓ Closing fragment
07-13 04:07 20m - / -12 R7OQ -15 / - 4 ✓ Closing fragment
07-13 04:04 20m - / -3 LZ2KV -4 / - 2 ✓ Closing fragment
07-13 04:03 20m - / -17 R6OP -16 / - 2 ✓ Closing fragment
07-13 03:58 20m - / -12 SV7JAR 0 / - 2 ✓ Closing fragment
07-13 03:47 40m - / - PA3BUD -4 / - 2 Partial capture
07-12 02:38 20m - / -14 W4DXM -1 / - 2 Partial capture
07-12 02:29 40m - / -4 RC6OD -5 / - 2 ✓ Closing fragment
07-11 03:56 40m - / -12 IU2WCY -16 / - 2 ✓ Closing fragment
07-10 08:48 20m - / -4 4X1YY -14 / - 2 ✓ Closing fragment
07-09 04:28 20m - / -13 JY5IB -18 / - 2 ✓ Closing fragment
07-09 04:27 20m - / -6 RL6MT -10 / - 5 ✓ Closing fragment
07-09 04:19 20m - / +7 RN6MA +4 / - 2 ✓ Closing fragment
07-09 04:16 20m - / -2 RA6HN -22 / - 3 ✓ Closing fragment
07-08 08:48 20m - / +8 LZ2INP -1 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
055600  -8 1168  IK3FHW/IT9 YO5COG -03
055945  +1  491  YO5COG RJ6ON R-11 (x2)
060115 -14  990  YO5COG DL3HN R-08
060130 -16  991  DL3HN YO5COG RR73
060145 -19  990  YO5COG DL3HN 73
034500  +3 1306  YO5COG RA4FUT LO23 (x2)
034645  -7  838  YO5COG RX6ABW R-16 (x2)
002530  -5  606  YO5COG 8Z1IT R-14 (x2)
003000  -3  925  YO5COG II4IANT R-14
024830  -6 2296  YO5COG RA4ADF R-14
003000  -8 1380  YO5COG SO100PKP R-06
80m 
UTC    dB Audio  Message
023700  -3 2311  <YO5COG> RD9M/3 73
023700 -15 1829  YO5COG ON1JP +03 (x2)
023745 +11 1830  ON1JP YO5COG R-14
023800  +4 2311  YO5COG RD9M/3 RR73
023800 -18 1829  YO5COG ON1JP +03 (x4)
024100  +8 1938  PA4G YO5COG -03
024115  +2 1938  YO5COG PA4G R-02 (x2)
024200  +1 1938  PA4G YO5COG RR73
024215  +7 2520  YO5COG RC6OU KN98
024215  -6 1938  YO5COG PA4G 73
20m 
UTC    dB Audio  Message
072615 -18 2416  YO5COG PA0LDE JO22 (x2)
054415 -10 2270  YO5COG RQ7R RR73 (x2)
064700 -11 1723  YO5COG F6JON/QRP R-01 (x2)
054545  -6 1146  YO5COG SV2HTW R+19 (x2)
054715 -21 2313  YO5COG R3DFS R-16
054815 -19 1895  YO5COG LZ1ON R-02
061615 -18 1673  YO5COG YO2DSA R+01
052030 -14 2029  YO5COG W4PSK R-06 (x3)
052400 -14 1485  R4FDW YO5COG -05
10m 
UTC    dB Audio  Message
135630  -6 2065  YO5COG PD9FLX JO22 (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.

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