UA3UBT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO06

Receiver-side FT8 activity involving UA3UBT, decoded by SO8OO in southeastern Poland. 113 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-16.

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 113 FT8 messages attributed to UA3UBT as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (43%), followed by 20 m (35%) and 40 m (22%). Most decodes (86%) fell within the six-hour window 04:00-10:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

113

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

40m · 25 20m · 39 10m · 49

First attributed message: 2026-06-10
Last attributed message: 2026-09-16 04:28 UTC

Observed FT8 message patterns

Attributed sample: 113 messages
Active dates: 18 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -19 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 34, moderate (-15 to -9 dB) 38, strong (≥ -8 dB) 41.

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 UA3UBT in decoded directed-looking exchanges:

UA9ZZ · Asiatic Russia ×2 A41ZZ · Oman DJ7UC · Fed. Rep. of Germany RA1N · European Russia RA1QCZ · European Russia RA6AR · European Russia RD3MF · European Russia RL1B · European Russia RM8W · Asiatic Russia EW4DX · Belarus HI8DX · Dominican Republic PD3LKN · Netherlands

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 UA3UBT

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: LO06 · 69 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,465 km (approx.)
Last such locator decoded: 2026-09-16 04:27 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	UA3UBT S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-16 04:28	40m	-8 / -	SV1ENG	-14 / -	2	✓ Closing observed
09-16 04:26	40m	- / -	IU8RFW	-8 / -	2	Partial capture
09-16 04:25	40m	-6 / -	OA4ENG	- / -25	2	✓ Closing fragment
09-12 06:04	40m	-13 / -	UB3ADO/P	- / -4	3	✓ Closing fragment
09-11 08:18	40m	- / -2	UA3YGP	-20 / -	3	Partial capture
07-23 06:48	10m	- / -	RA7KW	-22 / -	2	Partial capture
07-23 06:43	10m	-14 / -	RM8W	- / -3	2	✓ Closing fragment
07-23 06:32	10m	-15 / -	R3MBN	- / -	2	Partial capture
07-23 06:29	10m	-17 / -	RA1N	-20 / -	2	✓ Closing observed
07-21 07:09	20m	0 / -	EW4DX	- / -5	2	✓ Closing fragment
07-21 07:08	20m	+1 / -	UA4AFY	- / +9	2	✓ Closing fragment
07-21 07:06	20m	-1 / -	R0ADH/P	- / -8	4	✓ Closing fragment
07-18 07:08	10m	- / 0	RD7LC	-16 / -	2	Partial capture
07-16 05:13	20m	-19 / -4	HI8DX	-12 / +4	5	✓ Full exchange observed
07-13 15:50	40m	-18 / -	9N2WF	- / -	2	Partial capture
07-13 15:43	40m	-18 / -	UA9LCY	- / -7	2	✓ Closing fragment
07-13 15:38	40m	-16 / -	R0AF	- / -	4	✓ Closing fragment
07-13 15:37	40m	-18 / -	UA9ZZ	- / -12	3	✓ Closing fragment
07-13 15:33	40m	-11 / -	R0ADK	- / -5	2	✓ Closing fragment
07-13 10:01	20m	- / -	PD2WL	-20 / -	2	Partial capture
07-13 09:59	20m	- / -	PD3LKN	-10 / -	2	✓ Closing fragment
07-13 09:58	20m	- / -	DK1TUX	-2 / -	2	Partial capture
07-13 09:07	10m	- / -	RA6AR	-17 / -	4	✓ Closing fragment
07-13 05:22	20m	+5 / -	<...>	- / -	4	Partial capture
07-07 05:52	20m	-16 / -	TI5RR	- / -7	3	Partial capture
07-05 07:09	20m	-23 / -	HK3W	- / -	2	Partial capture
07-02 08:06	20m	- / -	IK4LZH	+6 / -	4	Partial capture
06-30 08:38	20m	-5 / -	A92AE	- / -18	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
081830 -20 1937  UA3UBT UA3YGP KO73 (x3)
060430 -13 1852  UB3ADO/P UA3UBT LO06 (x3)
042545 -10 2556  OA4ENG UA3UBT R-25 (x2)
042630  -7 2557  UA3UBT IU8RFW JN70
042715  -8 2556  CQ UA3UBT LO06                        a1 (x2)
042800 -14 2073  UA3UBT SV1ENG KM18
042800  -9 2557  UA3UBT IU8RFW JN70
042845  -8 2556  SV1ENG UA3UBT RR73
042900  -1 2865  UA3UBT RJ6ON -10

20m

UTC    dB Audio  Message
051330 -17 2195  HI8DX UA3UBT LO06 (x2)
051415 -11 1766  UA3UBT HI8DX -04
051430 -22 2196  HI8DX UA3UBT R+04
051445 -12 1766  UA3UBT HI8DX RR73
070600  -2 2562  R0ADH/P UA3UBT LO06 (x4)
070800  -1 2562  UA4AFY UA3UBT +09 (x2)
070900  +0 2562  EW4DX UA3UBT -05 (x2)
071100  +1 2562  RX7K UA3UBT 73
084415  -8  718  <...> UA3UBT LO06

10m

UTC    dB Audio  Message
062930 -20 2099  UA3UBT RA1N RR73
062945 -17 2413  RA1N UA3UBT 73
063045 -17 2413  R2PA UA3UBT R-13
063215 -15 2413  R3MBN UA3UBT LO06 (x3)
064045 -17 2413  DJ7UC UA3UBT RR73
064115 -14  911  R3MBN UA3UBT LO06
064300 -15  912  RM8W UA3UBT R-03 (x2)
064600 -11  911  RM3TO UA3UBT -23
064800 -16  911  RD3MF UA3UBT 73
064845 -21 1560  UA3UBT RA7KW KN74
064945 -16  912  UA3UBT UA4FKT LO23
064945 -24 1557  UA3UBT RA7KW KN74

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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