RA9UDY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: NO35

Receiver-side FT8 activity involving RA9UDY, decoded by SO8OO in southeastern Poland. 35 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-26.

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 35 FT8 messages attributed to RA9UDY as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

20m · 35

First attributed message: 2026-06-11
Last attributed message: 2026-08-26 04:23 UTC

Observed FT8 message patterns

Attributed sample: 35 messages
Active dates: 6 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -21 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 4.

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 RA9UDY in decoded directed-looking exchanges:

EA3EDU · Spain CE3BT · Chile E75AA · Bosnia-Herzegovina EC5M · Spain RA3P · European Russia RC3D · European Russia RY4D · European Russia RZ4AZ · European Russia S52WD · Slovenia T77RN · San Marino UA3XFO · European Russia UA6LET · European Russia

Most frequent locator attributed to RA9UDY

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: NO35 · 9 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 4,271 km (approx.)
Last such locator decoded: 2026-06-23 23:54 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	RA9UDY S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-12 08:02	20m	- / -3	RA3P	-13 / -	2	✓ Closing fragment
07-03 00:03	20m	- / +1	E75AA	0 / -	2	✓ Closing fragment
06-30 08:17	10m	- / -9	EA3EDU	+3 / -	4	✓ Closing fragment
06-27 23:35	20m	- / -1	YO6LM	-4 / -	2	✓ Closing fragment
06-27 23:13	20m	- / -	EA7LGM	0 / -	9	Partial capture
06-27 23:11	20m	- / -7	UA3XFO	-22 / -	2	✓ Closing fragment
06-27 22:53	20m	- / +8	T77RN	-7 / -	2	✓ Closing fragment
06-27 22:36	20m	-17 / -1	RC3D	-6 / -	3	✓ Full exchange observed
06-27 22:24	20m	- / +4	S52WD	+14 / -	2	✓ Closing fragment
06-27 00:37	20m	- / -15	EC5M	-10 / -	2	✓ Closing fragment
06-26 04:16	20m	- / -13	UA6LET	-13 / -	2	✓ Closing fragment
06-23 23:54	20m	-15 / -	LU1KCQ	- / -18	2	Partial capture
06-23 23:47	20m	-21 / -	CE3BT	- / -12	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
231600  -1 2884  RA9UDY EA7LGM IM67 (x7)
233530  -2 2267  RA9UDY YO6LM -01 (x2)
000345  +0 2672  RA9UDY E75AA +01 (x2)
080200 -12  746  RA9UDY RA3P -03 (x2)
080300 -23 1638  RA9UDY LZ4VR KN13
042315 -16 1217  EU2Q RA9UDY R-14

10m

UTC    dB Audio  Message
081745  +4 2548  RA9UDY EA3EDU JN01 (x4)

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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