UT5CM — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving UT5CM, decoded by SO8OO in southeastern Poland. 38 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-25 and 2026-09-10.

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 38 FT8 messages attributed to UT5CM as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (63%), followed by 20 m (18%) and 160 m (13%). Several six-hour UTC windows tied for the largest share (50%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

160m · 5 80m · 2 40m · 24 20m · 7

First attributed message: 2026-06-25
Last attributed message: 2026-09-10 10:46 UTC

Observed FT8 message patterns

Attributed sample: 38 messages
Active dates: 8 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -17 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 12, 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 UT5CM in decoded directed-looking exchanges:

9J2FI · Zambia 9A4AA · Croatia LX1RFJ · Luxembourg OZ9FF · Denmark S52EVA · Slovenia UT4PA · Ukraine UX7QV · Ukraine VJ6X · Australia

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 UT5CM

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 · 24 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 687 km (approx.)
Last such locator decoded: 2026-09-10 10:44 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	UT5CM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 10:46	40m	-10 / -	UX7QV	- / -	2	✓ Closing fragment
09-10 08:55	40m	-6 / -	F5OYA/P	- / -13	2	Partial capture
08-17 08:50	20m	-13 / -	OH6IH	- / -19	2	Partial capture
08-17 08:48	20m	-16 / -	9A4AA	-6 / -11	5	✓ Closing observed
08-10 19:19	40m	-14 / -	LX1RFJ	- / -20	4	✓ Closing fragment
08-10 15:44	40m	- / -7	S52EVA	-15 / -	2	✓ Closing fragment
08-07 07:33	40m	-18 / +1	UT4PA	-7 / -4	6	✓ Full exchange observed
08-07 07:32	40m	-22 / -	OZ9FF	-18 / -	2	✓ Closing observed
08-07 07:28	80m	-16 / -	EA1KCU	- / -	2	Partial capture
08-06 19:28	20m	- / -18	G3EFG	-10 / -	3	Partial capture
07-14 18:43	20m	- / +1	IK5EEA	-3 / -	3	Partial capture
07-12 20:38	160m	- / -	DL4KSD	-11 / -	2	Partial capture
07-11 19:26	40m	-1 / -	VJ6X	- / -23	7	✓ Closing fragment
07-11 19:25	40m	-4 / -	YH2AZ	- / -	2	Partial capture
07-09 12:49	20m	- / -	ON4KBU	-13 / -	2	Partial capture
07-09 12:49	20m	- / -16	YL2KF	-10 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
125315  -6 2807  UT5CM 9J2FI RR73

40m

UTC    dB Audio  Message
073545  -6 1356  UT5CM UT4PA 73
154400 -15 2423  UT5CM S52EVA -07 (x2)
191930 -13 2223  LX1RFJ UT5CM KN58 (x4)
085515  -6 1093  F5OYA/P UT5CM KN58 (x2)
104300  -8 1058  CQ UT5CM KN58 (x4)
104600 -10 1058  UX7QV UT5CM RR73 (x2)

20m

UTC    dB Audio  Message
125045 -12 1063  UT5CM ON4KBU JN29
184345  +1 1075  UT5CM IK5EEA JN53 (x3)
054445 -17 3150  UT5CM NU1T -14
192845  -8 1985  UT5CM G3EFG -18 (x3)
084815 -16 2259  9A4AA UT5CM KN58 (x3)
084930  -6  444  UT5CM 9A4AA RR73
084945 -13 2259  9A4AA UT5CM 73
085045  -9 2259  OH6IH UT5CM KN58 (x2)

80m

UTC    dB Audio  Message
072830 -17 1321  EA1KCU UT5CM KN58 (x2)

160m

UTC    dB Audio  Message
184300  -7 1448  CQ UT5CM KN58 (x5)
203800 -12 2380  UT5CM DL4KSD JO71 (x2)

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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