YL3VN — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving YL3VN, decoded by SO8OO in southeastern Poland. 157 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 7 UTC dates in the available aggregate history. Observed between 2026-09-25 and 2026-10-04.

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 157 FT8 messages attributed to YL3VN as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (63%), followed by 40 m (37%). Most decodes (83%) fell within the six-hour window 01:00-07:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (96%); the estimated median was +9 dB.

Overview

157

Messages attributed

UTC dates decoded

Active 15-min windows

+9 dB

Estimated median S/N

Bands

80m · 99 40m · 58

First attributed message: 2026-09-25
Last attributed message: 2026-10-04 05:59 UTC

Observed FT8 message patterns

Attributed sample: 157 messages
Active dates: 7 UTC dates
Estimated median S/N: +9 dB
Estimated 10th-90th percentile: -6 to +18 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 150.

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 YL3VN in decoded directed-looking exchanges:

9A4ZM · Croatia ×2 G3TKT · England ×2 9A1CCB · Croatia DK7UY · Fed. Rep. of Germany HB9FGO · Switzerland HK3YL · Colombia IU8RFW · Italy JH5LCN · Japan KA1MXL · United States NP3RK · Puerto Rico NP4VA · Puerto Rico OK1ZJK · Czech Republic

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 YL3VN

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 · 64 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 845 km (approx.)
Last such locator decoded: 2026-10-04 05:54 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	YL3VN S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-04 14:44	10m	- / +7	EA7Z	+4 / -	2	Partial capture
10-04 13:57	10m	- / -	EA4ITG	-21 / -	2	Partial capture
10-04 05:58	40m	-4 / -	IU8RFW	- / -10	2	✓ Closing fragment
10-04 05:54	40m	-2 / -	KA1MXL	- / -24	5	✓ Closing fragment
10-04 05:52	40m	-2 / -	WA8UET	- / -	3	Partial capture
10-04 05:50	40m	-5 / -14	OK1ZJK	+8 / +1	6	✓ Full exchange observed
10-04 05:47	40m	0 / -	KB9ZM	- / -	2	Partial capture
10-04 05:45	40m	-4 / -	DK9LF	- / -9	2	Partial capture
10-04 05:43	40m	- / -	F4BYA	+8 / -	3	Partial capture
10-04 05:43	40m	-3 / -14	S52D	+13 / -5	5	✓ Full exchange observed
10-04 05:37	40m	-1 / -	N8BV	- / -	2	Partial capture
10-04 05:34	40m	-2 / -	HK3YL	- / -17	3	✓ Closing fragment
10-03 05:00	80m	- / +1	GM6URC	-4 / -	4	Partial capture
10-03 04:59	80m	+1 / -	OH3DJP	- / +1	3	✓ Closing fragment
10-03 04:22	80m	- / 0	WA1J	0 / -	2	✓ Closing fragment
10-03 03:10	40m	- / -25	W4FO	-16 / -	2	Partial capture
10-03 03:09	40m	- / -	G3TKT	-2 / -	2	✓ Closing fragment
10-03 03:07	40m	- / -	LZ2VQ	-10 / -	2	Partial capture
10-03 02:53	40m	- / -	IU8RFW	-12 / -	5	Partial capture
10-03 02:51	40m	- / -16	PE1NPS	+3 / -	6	✓ Closing fragment
10-03 02:49	40m	- / -14	NP4VA	-10 / -	3	✓ Closing fragment
10-03 02:39	80m	- / -	DL5DQZ	+8 / -	10	Partial capture
10-03 02:38	80m	+13 / -5	EC3A	-8 / -16	4	✓ Full exchange observed
10-03 02:37	80m	+17 / -9	N4QS	-10 / -10	5	✓ Full exchange observed
10-03 02:36	80m	+19 / -	HI6M	- / -	2	Partial capture
10-02 01:54	80m	+16 / -	YV4KWT	- / -21	5	Partial capture
10-02 01:50	80m	+16 / -	YV4KWT	- / -	2	Partial capture
10-02 01:42	80m	+14 / -	KY2J	-12 / -21	5	Partial capture
10-02 01:40	80m	+17 / +5	TF3VG	-10 / -10	5	✓ Full exchange observed
10-02 01:38	80m	+19 / -2	US2YW	+9 / -	4	✓ Closing observed
10-02 01:36	80m	+18 / -	W3UCA	-14 / -19	6	✓ Closing observed
10-02 01:35	80m	+18 / -20	K4YT	-8 / -21	4	✓ Full exchange observed
10-02 01:30	80m	- / -	SP3SWJ	+5 / -	9	Partial capture
10-02 01:29	80m	+20 / -	KY2J	-11 / -21	6	Partial capture
10-02 01:28	80m	+16 / -11	R4HHN	0 / 0	7	✓ Full exchange observed
10-02 01:27	80m	+15 / -	9A4ZM	+20 / +8	5	✓ Full exchange observed
10-02 01:26	80m	+18 / -7	VE1PZ	-17 / -13	4	✓ Full exchange observed
10-02 01:22	80m	+9 / -	N8XY	- / -	2	Partial capture
10-02 01:14	80m	- / -	R4HHN	+7 / -	3	Partial capture
10-02 01:14	80m	- / -9	VE1PZ	-11 / -	2	Partial capture
10-02 01:13	80m	+7 / -	NP4EB	- / -17	3	✓ Closing fragment
10-02 01:07	80m	+10 / -	AP2HA	- / -	2	Partial capture
10-01 19:58	80m	+14 / -	TF4M	- / -	2	Partial capture
10-01 19:54	80m	+3 / -	BD8ENU	- / -11	2	✓ Closing fragment
10-01 18:47	40m	-8 / -14	9A1CCB	-3 / +9	4	✓ Full exchange observed
10-01 18:45	40m	+4 / -	UT3UQJ	- / -10	4	✓ Closing fragment
10-01 18:43	40m	+1 / -	ON4AZM	+5 / -2	4	✓ Closing observed
10-01 18:42	40m	+4 / -	YO4NF	- / +1	2	✓ Closing fragment
10-01 18:42	40m	- / -1	DK7ZT	-2 / -	2	Partial capture
10-01 18:39	40m	-9 / -	JH5LCN	- / -12	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
134400 -22 1466  YL3VN EA4ITG IN80
134430 -10  371  YL3VN CR7CDR R-07
135430 -24 1608  YL3VN EA4ITG IN80 (x3)
144400  +4  366  YL3VN EA7Z IM67 (x2)

40m

UTC    dB Audio  Message
055115  -4  319  OK1ZJK YL3VN 73
055130  +7  533  YL3VN OK1ZJK 73
055200  +7 2114  YL3VN DG7NFX JN59
055215  -1  319  WA8UET YL3VN KO17 (x3)
055400  -5  319  KA1MXL YL3VN KO17 (x5)
055745 -10 1545  YL3VN F5PBG IN78
055830  -5  319  IU8RFW YL3VN -10 (x2)
055945  +8  319  YL3VN DK3TA JO50

80m

UTC    dB Audio  Message
024215  +9  746  YL3VN DL5DQZ JO61 (x4)
042245  -2  446  YL3VN WA1J +00 (x2)
045900  -1  266  OH3DJP YL3VN KO17 (x3)
050015  -6 1695  YL3VN GM6URC +01
050045 -10  976  YL3VN RA1NBG KP54
050045  -5 1694  YL3VN GM6URC +01 (x3)
052200 +10  283  KF8EXX YL3VN KO17

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee