YL3AVN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Latvia Most frequent locator attributed to this token: KO17

Receiver-side FT8 activity involving YL3AVN, decoded by SO8OO in southeastern Poland. 857 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 44 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-04.

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 857 FT8 messages attributed to YL3AVN as the transmitting token by decoded message structure across 44 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (71%), followed by 10 m (26%) and 40 m (3%). The busiest six-hour window was 23:00-05:00 UTC, containing 50% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (90%); the estimated median was +4 dB.

Overview

857

Messages attributed

UTC dates decoded

187

Active 15-min windows

+4 dB

Estimated median S/N

Bands

80m · 610 40m · 23 10m · 224

First attributed message: 2026-06-06
Last attributed message: 2026-09-04 15:10 UTC

Observed FT8 message patterns

Attributed sample: 857 messages
Active dates: 44 UTC dates
Estimated median S/N: +4 dB
Estimated 10th-90th percentile: -8 to +12.5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 67, strong (≥ -8 dB) 775.

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 YL3AVN in decoded directed-looking exchanges:

IK4LZH · Italy ×3 4X1UF · Israel ×3 VP2MAA · Montserrat ×2 YB5QZ · Indonesia ×2 DL4DP · Fed. Rep. of Germany ×2 F6FHZ · France ×2 YO4NF · Romania ×2 G8OO · England ×2 OO0O · Belgium ×2 DK2BJ · Fed. Rep. of Germany CR7CBH · Portugal TJ1GD/P · Cameroon

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 YL3AVN

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: KO17 · 436 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 845 km (approx.)
Last such locator decoded: 2026-09-04 01:40 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	YL3AVN S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-04 15:10	10m	+4 / -	A2NEW	- / -1	2	✓ Closing fragment
09-04 01:43	80m	+15 / -	PC2F	-7 / -9	2	Partial capture
09-04 01:43	80m	+12 / +10	DL7ZF	-7 / -3	6	✓ Full exchange observed
09-04 01:42	80m	+13 / -4	YO4NF	+18 / +9	4	✓ Full exchange observed
09-04 01:40	80m	- / -	LZ1EV	+11 / -	11	Partial capture
09-04 01:39	80m	- / -	N1IXE	-20 / -	3	Partial capture
09-04 01:38	80m	+11 / -12	NM1G	-8 / -9	10	✓ Full exchange observed
09-04 01:27	40m	- / -14	TA3NK	-2 / -	12	✓ Closing fragment
09-04 01:25	40m	- / -3	ON1DGN	-15 / -	4	Partial capture
09-04 01:25	40m	- / -24	PC2J	+13 / -	3	✓ Closing fragment
09-04 01:18	40m	- / -	PC2J	+6 / -	5	Partial capture
09-04 01:14	40m	- / -23	KA8G	-13 / -	3	Partial capture
09-04 01:13	40m	- / -	PE1NPS	+3 / -	4	Partial capture
09-04 01:01	40m	- / -	DK7ZT	-23 / -	3	Partial capture
09-04 01:01	40m	- / -	N4SIX	-5 / -	3	Partial capture
09-03 17:50	40m	-4 / -	RI1FJL	- / -7	4	Partial capture
08-30 02:13	80m	+5 / -	AA3B	- / -	3	Partial capture
08-30 02:09	80m	0 / -	LU8EKC	- / -	3	Partial capture
08-30 02:00	80m	- / -	PE1NPS	-5 / -	4	Partial capture
08-30 01:59	80m	+10 / -14	4X1UF	-11 / +1	5	✓ Full exchange observed
08-30 01:56	80m	+10 / -2	LZ2VQ	+3 / -6	5	✓ Full exchange observed
08-30 01:55	80m	+6 / -18	K1SFA	-6 / -14	5	✓ Full exchange observed
08-30 01:53	80m	+3 / -	ZP5DBC	- / -	2	Partial capture
08-29 10:13	10m	- / -16	F4ILK	-14 / -	2	✓ Closing fragment
08-28 08:46	10m	- / -20	IK4TVP	-12 / -	5	Partial capture
08-28 00:08	40m	- / -5	W8LRL	-10 / -	2	✓ Closing fragment
08-28 00:00	40m	- / -	DK7ZT	-16 / -	2	Partial capture
08-27 23:59	40m	- / -15	YB5QZ	-15 / -	3	✓ Closing fragment
08-24 18:48	40m	+2 / -16	UN3G	-2 / -7	5	✓ Full exchange observed
08-24 18:25	40m	-3 / -	JA5NSR	- / -24	5	✓ Closing fragment
08-24 17:57	40m	- / -	F5RRS	-3 / -	3	Partial capture
08-24 17:33	40m	-7 / -	VJ6X	- / -	2	Partial capture
08-24 01:42	40m	- / -21	NB2P	+6 / -	3	✓ Closing fragment
08-24 01:38	40m	- / -	OG2M	-12 / -	3	Partial capture
08-24 01:33	40m	- / -10	SV3AUW	-8 / -	2	✓ Closing fragment
08-24 01:31	40m	- / -	WW3S	-15 / -	8	Partial capture
08-24 01:29	40m	- / -9	AG2K	+9 / -	2	✓ Closing fragment
08-24 01:12	80m	0 / -5	G8IHT	-3 / -	4	✓ Closing observed
08-24 01:01	80m	+13 / -	W1MLT	- / -	3	Partial capture
08-24 00:58	80m	+3 / -2	DK7ZT	+16 / +4	4	✓ Full exchange observed
08-24 00:57	80m	- / -5	MM0KQC	-1 / -	7	Partial capture
08-24 00:57	80m	- / -	OE3OOG	+4 / -	2	Partial capture
08-24 00:57	80m	- / -	UR4LBG	+2 / -	2	Partial capture
08-24 00:56	80m	+8 / -15	EC3A	0 / -7	5	✓ Full exchange observed
08-22 11:13	10m	- / -	M8FQT	-8 / -	2	Partial capture
08-22 07:27	40m	- / -15	IU3GOR	-7 / -	4	✓ Closing fragment
08-22 07:26	40m	- / +7	DK7ZT	-22 / -	2	Partial capture
08-22 07:26	40m	- / -18	SP7TF	+16 / -	2	✓ Closing fragment
08-21 16:26	10m	- / -	DH5BM	+2 / -	2	Partial capture
08-21 16:24	10m	- / +9	OK1STK	+7 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
162515  +5  504  YL3AVN OK1STK R+09
162615  +4  506  YL3AVN DH5BM JO41 (x2)
111315  -9  497  YL3AVN M8FQT IO93
111345  +7  492  YL3AVN IK4LZH JN54
111415  -7  497  YL3AVN M8FQT R+29
084630 -11 1692  YL3AVN IK4TVP -20 (x5)
101330 -16  983  YL3AVN F4ILK -16 (x2)
151015  +5  472  A2NEW YL3AVN R-01 (x2)

80m

UTC    dB Audio  Message
014300  -2  403  YL3AVN DL7ZF JO62
014300 +11 1704  YL3AVN LZ1EV KN22
014315 +15  598  YO4NF YL3AVN 73
014330 +11 1704  YL3AVN LZ1EV KN22
014330  -7  598  YL3AVN PC2F JO22
014330  -6  403  YL3AVN DL7ZF JO62
014345 +15  598  DL7ZF YL3AVN -03
014400  -8  403  YL3AVN DL7ZF R+10
014400 +11 1704  YL3AVN LZ1EV KN22
014415  +8  598  DL7ZF YL3AVN RR73
014430  +9 1704  YL3AVN LZ1EV KN22
014430 -13  403  YL3AVN DL7ZF 73
014445 +15  598  PC2F YL3AVN -09
014500 +11 1704  YL3AVN LZ1EV KN22 (x2)

40m

UTC    dB Audio  Message
012630 -13 1397  YL3AVN ON1DGN -03
012630  +8  553  YL3AVN PC2J 73
012700 -17 1397  YL3AVN ON1DGN -03
012730  +4  553  YL3AVN TA3NK KM39 (x12)

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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