UA3S — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO94

Receiver-side FT8 activity involving UA3S, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 160m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-04 and 2026-09-22.

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 34 FT8 messages attributed to UA3S as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (94%), followed by 40 m (6%). Most decodes (100%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (97%); the estimated median was +3 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+3 dB

Estimated median S/N

Bands

160m · 32 40m · 2

First attributed message: 2026-09-04
Last attributed message: 2026-09-22 15:02 UTC

Observed FT8 message patterns

Attributed sample: 34 messages
Active dates: 3 UTC dates
Estimated median S/N: +3 dB
Estimated 10th-90th percentile: -6 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 33.

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 UA3S in decoded directed-looking exchanges:

RN3QTS · European Russia ×2 F5MYK · France OH6NIO · Finland OK1FRG · Czech Republic R8LCA · Asiatic Russia R9SAP · Asiatic Russia RI1FJL · Franz Josef Land RI1FJZ · Franz Josef Land RM5F · European Russia SP9UPH · Poland UA1OJL · European Russia

Most frequent locator attributed to UA3S

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: KO94 · 11 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,273 km (approx.)
Last such locator decoded: 2026-09-22 15:02 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	UA3S S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-22 15:02	40m	-8 / -	RI1FJZ	- / -	2	Partial capture
09-16 19:58	160m	+3 / +2	R9SAP	-21 / -2	3	✓ Full exchange observed
09-16 19:57	160m	- / -	OK2USM	-15 / -	2	Partial capture
09-16 19:56	160m	+6 / -	R8LCA	- / -6	2	✓ Closing fragment
09-16 19:55	160m	+3 / 0	RM5F	-16 / -7	5	✓ Full exchange observed
09-16 19:50	160m	+3 / -	RI1FJZ	- / -12	10	✓ Closing fragment
09-04 19:19	160m	- / -	SV1EKI	-18 / -	2	Partial capture
09-04 19:18	160m	+7 / -	UA1OJL	- / -3	2	✓ Closing fragment
09-04 19:18	160m	+2 / +2	RN3QTS	-10 / +4	6	✓ Full exchange observed
09-04 19:15	160m	0 / -7	F5MYK	-16 / -20	7	✓ Full exchange observed
09-04 19:15	160m	+6 / 0	OK1FRG	+13 / -6	7	✓ Full exchange observed
09-04 19:14	160m	-6 / -	OH6NIO	- / -8	3	✓ Closing fragment
09-04 19:12	160m	- / -	EA1CQ	-23 / -	6	Partial capture
09-04 19:12	160m	0 / -2	SP9UPH	+13 / -11	5	✓ Full exchange observed
09-04 19:11	160m	+5 / -	RI1FJL	- / -15	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
150215  -8 1838  RI1FJZ UA3S KO94 (x2)

160m

UTC    dB Audio  Message
195515  +6 1946  RI1FJZ UA3S 73
195530 -17 1106  UA3S RM5F KO85
195615  +7 1946  R8LCA UA3S -06 (x2)
195700 -21 1946  UA3S OK2USM JN89
195715  +6 1946  RM5F UA3S -07
195730 -15 1106  UA3S RM5F R+00
195745  +0 1946  RM5F UA3S RR73
195800 -16 1106  UA3S RM5F 73
195800  -9 1947  UA3S OK2USM JN89
195830 -21 2024  UA3S R9SAP +02
200015  +3 1946  R9SAP UA3S R-02 (x2)
200130 -13 1947  UA3S OK2USM JN89
200200 -15 1946  UA3S IU3RRX JN55

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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