UT5CO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ukraine Most frequent locator attributed to this token: KN58

Receiver-side FT8 activity involving UT5CO, decoded by SO8OO in southeastern Poland. 23 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-09-20.

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 23 FT8 messages attributed to UT5CO as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (57%), followed by 20 m (39%) and 10 m (4%). Several six-hour UTC windows tied for the largest share (74%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (78%); the estimated median was -1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

40m · 13 20m · 9 10m · 1

First attributed message: 2026-06-18
Last attributed message: 2026-09-20 14:38 UTC

Observed FT8 message patterns

Attributed sample: 23 messages
Active dates: 5 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -11 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 18.

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 UT5CO in decoded directed-looking exchanges:

PD0HLA · Netherlands PU1PCR · Brazil SV1CQN · Greece TK4BB · Corsica

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 UT5CO

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: KN58 · 18 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 687 km (approx.)
Last such locator decoded: 2026-09-20 14:38 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 UTC	Band	UT5CO S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 07:12	40m	- / -13	II6IALU	-14 / -	2	Partial capture
09-20 07:11	40m	-2 / -	YO3FVR/P	- / -	2	Partial capture
09-20 07:07	40m	-1 / -	SN100PKP	- / -	3	Partial capture
09-20 07:06	40m	-3 / -	OH/DL4XT	- / -20	2	Partial capture
09-20 07:04	40m	0 / -	II9IAGM	- / -	2	Partial capture
09-20 06:32	40m	-2 / -	UB3AVN/P	- / -	2	Partial capture
09-14 14:43	10m	- / -13	PU1PCR	-21 / -	2	✓ Closing fragment
08-30 10:34	10m	- / 0	<...>	-5 / -	3	✓ Closing fragment
08-24 14:29	20m	- / +2	IR7MGGC	+4 / -	3	Partial capture
08-21 16:40	20m	-9 / -	<...>	- / -3	3	Partial capture
08-17 16:41	20m	-11 / -	IW5ABF	-20 / -4	2	Partial capture
08-17 16:38	20m	-10 / -8	<...>	-24 / -	2	Partial capture
08-01 10:11	10m	- / -	SV1CQN	-9 / -	2	✓ Closing fragment
07-07 17:22	10m	- / -	DO1FDK	-2 / -	4	Partial capture
06-29 14:39	10m	- / -4	PD0HLA	-12 / -	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
063215  -4  992  UB3AVN/P UT5CO KN58 (x2)
070245  -3 1809  SQ2RBY/P UT5CO KN58
070445  +2 1135  II9IAGM UT5CO KN58 (x2)
070645  -3 1132  OH/DL4XT UT5CO R-20 (x2)
070745  +1 1216  SN100PKP UT5CO KN58 (x3)
071115  +2 1970  YO3FVR/P UT5CO KN58 (x2)
071230 -14 2157  UT5CO II6IALU -13 (x2)
143800  +0 2098  RT4A/P UT5CO KN58

10m

UTC    dB Audio  Message
172215  -1 2953  UT5CO DO1FDK JO41 (x4)
101100  -9 1812  UT5CO SV1CQN +12 (x2)
085400 -22 1400  <...> UT5CO KN58
052930 -16 2172  UT5CO SV2JAO -04
110600 -16 1028  UT5CO RR73; HA5AZD <...> -06
071200 -22 1475  UT5CO TK4BB RR73
103445  -5  394  UT5CO <...> +00 (x3)
144345 -21 1528  UT5CO PU1PCR -13 (x2)

20m

UTC    dB Audio  Message
163800 -10 1105  <...> UT5CO KN58
163945 -24 1610  UT5CO <...> -08
164115 -20 1525  UT5CO IW5ABF JN53
164200 -11 1525  IW5ABF UT5CO -04
164015 -16 1296  <...> UT5CO KN58 (x3)
142930  +3 1756  UT5CO IR7MGGC +02 (x3)
091800  -5 2105  UT5CO II7MGBT +06

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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