YO9AYN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN24

Receiver-side FT8 activity involving YO9AYN, decoded by SO8OO in southeastern Poland. 119 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-12 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 119 FT8 messages attributed to YO9AYN as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (49%), followed by 20 m (47%) and 80 m (4%). Several six-hour UTC windows tied for the largest share (66%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -3 dB.

Overview

119

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

80m · 5 40m · 58 20m · 56

First attributed message: 2026-07-12
Last attributed message: 2026-08-26 17:40 UTC

Observed FT8 message patterns

Attributed sample: 119 messages
Active dates: 4 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -17 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 63.

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 YO9AYN in decoded directed-looking exchanges:

A41ZZ · Oman DL1UDO · Fed. Rep. of Germany DL1YS · Fed. Rep. of Germany F1ODM · France F1PSX · France G4DBW · England HA1BF · Hungary RN6MA · European Russia TA2EE · Asiatic Turkey UA9SY · Asiatic Russia YT7ALE · Serbia DL9KM · Fed. Rep. of Germany

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 YO9AYN

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: KN24 · 54 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 651 km (approx.)
Last such locator decoded: 2026-08-26 17:40 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	YO9AYN S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-26 17:35	20m	-13 / -	RI1FJL	- / -	5	Partial capture
08-26 17:29	20m	-15 / -	RI1FJL	- / -	7	Partial capture
08-26 17:14	20m	-14 / -	RI1FJL	- / -	2	Partial capture
07-23 07:38	20m	-11 / -24	DL1UDO	-15 / -	4	✓ Closing observed
07-23 07:33	20m	- / -24	PC2J	-16 / -	2	Partial capture
07-23 07:30	20m	-18 / -	F1PSX	-8 / -	3	✓ Closing observed
07-23 07:29	20m	- / +4	UX7QV	-6 / -	2	Partial capture
07-23 07:28	20m	-12 / -	UA9SY	- / -11	2	✓ Closing fragment
07-23 07:26	20m	-14 / +7	YT7ALE	-5 / -	4	✓ Closing observed
07-23 07:25	20m	-14 / -	RN6MA	-11 / -	3	✓ Closing observed
07-23 07:21	20m	-15 / -25	DL1YS	-14 / -13	9	✓ Full exchange observed
07-23 07:18	20m	-14 / -	TA2EE	- / -2	2	✓ Closing fragment
07-23 07:13	20m	-14 / -	F5PBG	- / -10	5	Partial capture
07-23 07:11	20m	-13 / -	PC2J	- / -18	2	Partial capture
07-23 07:08	20m	-14 / -10	F1ODM	-10 / -5	4	✓ Full exchange observed
07-23 06:23	20m	-17 / +7	HA1BF	+4 / -	5	✓ Full exchange observed
07-23 06:18	20m	-14 / -	EA8CZL	- / -	2	Partial capture
07-16 18:14	40m	+5 / -	RL2F	- / -2	3	✓ Closing fragment
07-16 18:10	40m	+8 / -	UN8DSW	- / -10	3	✓ Closing fragment
07-16 18:07	40m	+4 / -3	RA3RDN	-9 / -	7	✓ Full exchange observed
07-16 18:06	40m	+6 / 0	DL9KM	-11 / +2	5	✓ Full exchange observed
07-16 18:04	40m	+4 / +8	UA4FEN	-14 / +2	4	✓ Full exchange observed
07-16 18:01	40m	+5 / -	R8OAE	- / -9	5	✓ Closing fragment
07-12 19:26	40m	-2 / -	IZ8PPI	- / -8	2	✓ Closing fragment
07-12 19:25	40m	+2 / -	HG8IT	-17 / -	2	✓ Closing observed
07-12 19:24	40m	0 / -	SP3BZU	-6 / -	4	✓ Full exchange observed
07-12 19:23	40m	-1 / -	VK4DAD	- / -	2	Partial capture
07-12 19:15	40m	-5 / -	T22TT	- / -	3	Partial capture
07-12 19:08	40m	+2 / -	TJ1GD/P	- / -18	3	✓ Closing fragment
07-12 19:07	40m	+2 / -	R0AJQ/P	- / -	4	✓ Closing fragment
07-12 19:03	40m	+8 / -	YD2DFO	- / -8	3	✓ Closing fragment
07-12 19:01	40m	+4 / -	T22TT	- / -	2	Partial capture
07-12 18:54	40m	+6 / -	T22TT	- / -18	9	Partial capture
07-12 18:51	40m	+8 / -	RC9WC	- / -10	2	✓ Closing fragment
07-12 18:45	40m	+6 / -	JH0AHI	- / -7	3	✓ Closing fragment
07-12 18:34	80m	+10 / -	<...>	- / -	2	Partial capture
07-12 17:41	80m	+13 / -	UD8S	- / -12	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
171415 -15 2003  RI1FJL YO9AYN KN24 (x15)

40m

UTC    dB Audio  Message
180645  +7 2231  DL9KM YO9AYN RR73
180700 -12 2230  YO9AYN RA3RDN LO02
180700 -13  987  YO9AYN DL9KM 73
180715  +4 2231  RA3RDN YO9AYN +17
180730  -6 2230  YO9AYN RA3RDN R-03
180745  +4 2231  RA3RDN YO9AYN RR73
180800 -10 2230  YO9AYN RA3RDN 73
180815  +1 2231  RA3RDN YO9AYN KN24 (x2)
181030  +8 2231  UN8DSW YO9AYN R-10 (x3)
181430  +6 2231  RL2F YO9AYN KN24 (x3)

80m

UTC    dB Audio  Message
174130 +13 2344  UD8S YO9AYN KN24 (x3)
183415  +9 2344  <...> YO9AYN KN24
183430  +6 1040  YO9AYN YR50NADIA +10
183445 +11 2344  <...> YO9AYN 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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