UA9YFL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: MO91

Receiver-side FT8 activity involving UA9YFL, decoded by SO8OO in southeastern Poland. 36 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-11 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 36 FT8 messages attributed to UA9YFL 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 (97%), followed by 20 m (3%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (64%); the estimated median was -17 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

40m · 35 20m · 1

First attributed message: 2026-08-11
Last attributed message: 2026-09-18 00:36 UTC

Observed FT8 message patterns

Attributed sample: 36 messages
Active dates: 5 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -21 to -12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 13, strong (≥ -8 dB) 0.

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 UA9YFL in decoded directed-looking exchanges:

DL2KTH · Fed. Rep. of Germany 4X5JK · Israel BI8AWT · China CS7BHA · Portugal DK5WL · Fed. Rep. of Germany IU2VBP · Italy LZ1GC · Bulgaria PD0LBY · Netherlands PD1AIQ · Netherlands RA0WBI · Asiatic Russia RQ6B · European Russia RX6AOB · European Russia

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 UA9YFL

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: MO91
SO8OO receiver locator: KN09VW
Locator-centre separation: 3,927 km (approx.)
Last such locator decoded: 2026-09-18 00:26 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	UA9YFL S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 00:36	40m	-12 / -	SP100PKP	- / -9	2	Partial capture
09-18 00:34	40m	-14 / -5	RX6AOB	+3 / -6	4	✓ Full exchange observed
09-18 00:33	40m	-16 / -	PR2NA	- / -19	2	Partial capture
09-18 00:29	40m	-18 / -	IU2VBP	- / -19	2	✓ Closing fragment
09-18 00:26	40m	-22 / -3	UG4L	-2 / -7	5	✓ Full exchange observed
09-18 00:20	40m	-14 / -	RQ6B	- / -10	2	✓ Closing fragment
09-18 00:13	40m	-18 / -12	MI7XHT	-11 / -16	5	Partial capture
09-18 00:05	40m	-12 / -	DK5WL	- / -13	2	✓ Closing fragment
09-18 00:03	40m	-14 / -	SP6AXW	- / -13	2	✓ Closing fragment
09-18 00:02	40m	-12 / -4	UA4FKT	+4 / -	4	✓ Closing observed
09-17 23:59	40m	-18 / -	PD0LBY	-24 / -	2	✓ Closing observed
09-17 23:58	40m	-21 / -	BI8AWT	- / -13	2	✓ Closing fragment
09-17 23:57	40m	-21 / -4	4X5JK	0 / -	2	✓ Closing observed
09-05 01:13	40m	-16 / -	PD1AIQ	- / -4	2	✓ Closing fragment
09-01 00:01	40m	-20 / -13	CS7BHA	-15 / -17	3	✓ Full exchange observed
07-25 01:19	20m	- / -9	DL2KTH	-5 / -	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
002700 -21 1341  UG4L UA9YFL RR73
002715  -2 1162  UA9YFL UG4L 73
002900 -16 1338  UN7PPV UA9YFL RR73
002930 -17 1336  IU2VBP UA9YFL -19 (x2)
003130 -15 1332  LZ1GC UA9YFL RR73
003245 -15 1330  LU1AMJ UA9YFL -19
003315 -17 1329  PR2NA UA9YFL -19 (x2)
003445 -17 1359  RX6AOB UA9YFL -06
003500  +1 2360  UA9YFL RX6AOB R-05
003515 -12 1359  RX6AOB UA9YFL RR73
003530  +5 2360  UA9YFL RX6AOB 73
003615 -11 1358  SP100PKP UA9YFL -09 (x2)

20m

UTC    dB Audio  Message
011915  -2 2562  UA9YFL DL2KTH R-09 (x2)
003230 -15  987  UA9YFL RR73; JR4EFA <...> -12
005945 -18 1443  VO1CH UA9YFL -13
021300 -14 1818  UA9YFL PT7BI R-16

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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