YL3NF — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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

Receiver-side FT8 activity involving YL3NF, decoded by SO8OO in southeastern Poland. 547 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 28 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-19.

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 547 FT8 messages attributed to YL3NF as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (58%), followed by 60 m (17%) and 20 m (10%). Most decodes (91%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -4 dB.

Overview

547

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

160m · 13 80m · 48 60m · 91 40m · 315 20m · 55 10m · 25

First attributed message: 2026-06-09
Last attributed message: 2026-10-19 18:34 UTC

Observed FT8 message patterns

Attributed sample: 547 messages
Active dates: 28 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -16 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 60, moderate (-15 to -9 dB) 120, strong (≥ -8 dB) 367.

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 YL3NF in decoded directed-looking exchanges:

R6DZR · European Russia ×2 EA1IOK · Spain ×2 II5GG · Italy ×2 R3DFS · European Russia ×2 RA9CUU · Asiatic Russia ×2 RA9FUE · European Russia ×2 EW6BZ · Belarus OH5KNL · Finland OZ2LIN · Denmark BG7BVI · China LU1FIV · Argentina LU1KCQ · Argentina

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 YL3NF

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 · 192 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 845 km (approx.)
Last such locator decoded: 2026-10-19 18:31 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	YL3NF S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-19 18:33	60m	+2 / -	IZ2WYA	-7 / 0	3	✓ Closing observed
10-19 18:31	60m	0 / +7	YL2NX	+1 / +9	5	✓ Full exchange observed
10-19 18:25	60m	+1 / +8	F5RMK	-13 / 0	5	✓ Full exchange observed
10-19 18:23	60m	+1 / +8	8S2A	-14 / +3	5	✓ Full exchange observed
10-19 18:21	60m	0 / +4	SP3JHZ	+1 / +9	6	✓ Full exchange observed
10-19 18:19	60m	0 / -	DL2YBG	-17 / +10	4	✓ Closing observed
10-19 18:18	60m	+2 / -	DL1ASR	- / -8	3	✓ Closing fragment
10-19 18:17	60m	+4 / -	G4ZFJ	0 / -	6	✓ Full exchange observed
10-19 18:16	60m	- / -	ER3UA	-2 / -	3	Partial capture
10-19 18:16	60m	0 / -	SP2EWQ	-5 / -	5	✓ Full exchange observed
10-19 18:13	60m	+4 / +6	F6FHZ	-20 / -25	5	✓ Full exchange observed
10-19 18:13	60m	+2 / +5	HF5A	+7 / -	6	✓ Full exchange observed
10-19 18:13	60m	- / -	SP3JHZ	-1 / -	4	Partial capture
10-19 18:12	60m	+1 / -	OH5MASA	- / -22	2	Partial capture
10-19 18:09	60m	+2 / -	PA/DL3IAS	- / -8	4	Partial capture
10-16 17:19	40m	+4 / -	RA9FUE	- / -9	4	✓ Closing fragment
10-16 17:18	40m	+6 / -	RA4PIS	- / -4	3	✓ Closing fragment
10-16 17:16	40m	+12 / -	UA3XDR	- / -2	3	✓ Closing fragment
10-16 17:11	60m	+8 / -	SV8NAJ	-16 / -5	5	✓ Closing observed
10-16 17:04	60m	+2 / -	DK7ZT	-2 / +2	6	✓ Full exchange observed
10-16 17:04	60m	- / -	PE1NPS	0 / -	3	Partial capture
10-16 17:04	60m	+4 / +8	SV1EKI	-4 / -	9	✓ Full exchange observed
10-16 17:03	60m	+2 / -	SP5DFK/QRP	- / -	2	Partial capture
10-16 17:00	60m	+2 / -6	I8IGS	-6 / -	5	✓ Full exchange observed
10-16 16:59	60m	+2 / -2	YO2MAX	+12 / -	5	✓ Full exchange observed
10-16 16:58	60m	+2 / -	SM7WNM	- / -	2	✓ Closing fragment
10-16 16:57	60m	+3 / +8	IT9JNR	-6 / +3	5	✓ Full exchange observed
10-16 16:55	60m	-3 / -	IN3IZQ	- / -	2	Partial capture
10-16 16:53	60m	+2 / 0	DK0ND	+8 / -	5	✓ Full exchange observed
10-16 16:53	60m	+3 / -	DK7ZT	-2 / -	4	Partial capture
10-16 16:51	60m	-1 / +3	PH0AS	-12 / +8	5	✓ Full exchange observed
10-16 16:49	60m	+2 / -18	EA1IOK	-9 / -	2	✓ Closing observed
10-16 16:48	60m	+2 / -	IT9SVJ	-18 / +1	3	✓ Closing observed
10-16 16:47	60m	+2 / -	4L7T	- / -	2	Partial capture
10-12 18:42	40m	+5 / -	EY7BM	- / -	3	Partial capture
10-12 18:40	40m	+2 / -	M0KNM	-13 / -9	3	✓ Closing observed
10-12 18:39	40m	+8 / -	BH3HAO	- / -10	2	✓ Closing fragment
10-12 18:37	40m	+5 / -	R6FML	-23 / -4	4	✓ Closing observed
10-12 18:35	40m	+4 / -5	RD5Q	-4 / +8	5	✓ Full exchange observed
10-12 18:33	40m	+5 / -	RC9WC	-15 / -7	5	✓ Closing observed
10-12 18:31	40m	0 / -10	II5GG	-10 / -2	4	✓ Full exchange observed
10-11 18:11	40m	+2 / -	R6DZR	- / -6	3	✓ Closing fragment
10-10 15:47	40m	-1 / -	RU9BM	- / -4	2	✓ Closing fragment
10-10 15:46	40m	-2 / -10	R6ZB	-8 / -	2	✓ Closing observed
10-10 15:43	40m	-2 / +2	R9FE	0 / -	6	✓ Full exchange observed
10-10 15:41	40m	0 / -	RA9LL	- / -4	3	✓ Closing fragment
10-10 15:39	40m	-5 / -	BD8ENX	- / -9	2	Partial capture
10-10 15:34	40m	-4 / -4	DC8SR	-3 / -1	8	✓ Full exchange observed
10-10 15:33	40m	+1 / -12	II5GG	-9 / -13	5	✓ Full exchange observed
10-10 15:32	40m	-4 / -	UA4WGS	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
182430 -15 2011  YL3NF 8S2A RR73
182445  -1 1285  8S2A YL3NF 73
182515  -1 1285  F5RMK YL3NF KO17
182530 -13 1835  YL3NF F5RMK +08
182545  +0 1285  F5RMK YL3NF R+00
182600 -13 1835  YL3NF F5RMK RR73
182615  +4 1285  F5RMK YL3NF 73
183145  +0 1285  YL2NX YL3NF KO17
183200  +1 1031  YL3NF YL2NX +07
183215  +2 1285  YL2NX YL3NF R+09
183230  +1 1031  YL3NF YL2NX RR73
183245  -2 1285  YL2NX YL3NF 73
183345  +3 1285  IZ2WYA YL3NF +00 (x2)
183430  -7 2811  YL3NF IZ2WYA 73

40m

UTC    dB Audio  Message
184100  +4 1233  M0KNM YL3NF 73
184130  +6 1234  EA3AAY YL3NF RR73
184230  +2 1233  EY7BM YL3NF KO17 (x3)
171645 +11 1176  UA3XDR YL3NF KO17 (x3)
171815  +8 1176  RA4PIS YL3NF KO17 (x3)
171945  +4 1176  RA9FUE YL3NF KO17 (x4)

160m

UTC    dB Audio  Message
175030 -20 1168  OZ2LIN YL3NF 73
175100 -24 1168  DL3IAE YL3NF KO17
175200 -17 1168  EW6BZ YL3NF KO17 (x3)
175345  +7 2068  YL3NF OH5KNL -16
175345  +1 1217  YL3NF EW6BZ -21
175400 -19 1168  OH5KNL YL3NF R+08
175415  +5 2068  YL3NF OH5KNL RR73
175415  -7 1217  YL3NF EW6BZ -21
175430 -12 1168  OH5KNL YL3NF 73
175445  -2 1217  YL3NF EW6BZ -21
175500 -15 1168  EW6BZ YL3NF R+03
175515  -3 1217  YL3NF EW6BZ RR73
175530 -13 1168  EW6BZ YL3NF 73

80m

UTC    dB Audio  Message
193030 -21  329  YL3NF OH3GBW KP21
193045  -7 1269  OH3GBW YL3NF +25
193100  -4  328  YL3NF OH3GBW R+22
193115  -2 1269  OH3GBW YL3NF RR73
193130  -7  328  YL3NF OH3GBW 73
193145  -3 1269  R5ACQ YL3NF KO17 (x2)
193315  -2 1269  II6IALU YL3NF KO17
193330  +2 1268  YL3NF OE5ABL -11
193445  -1 1268  OE5ABL YL3NF RR73
193645  +2 1267  YL3NF SP4WJ KO03 (x5)

20m

UTC    dB Audio  Message
224015 -16 1904  KF8EFV YL3NF KO17
173045 -18 1104  R4YBG YL3NF R+04
173100 -18 2381  YL3NF R4YBG RR73
173115 -16 1104  R4YBG YL3NF 73
173145 -10 1104  8Z1IT YL3NF KO17
154230 -16 2125  YL3NF UN7IV -02 (x2)
154530  -5  899  YL3NF R9FFT -12 (x2)
155100 -19 2041  YL3NF BG7BVI -17 (x2)
155345 -13 1029  YL3NF OD5ZZ -03 (x2)
160915  -7  257  YL3NF 4X1UF +04
184500  -9  974  YL3NF II7MGXX +08

10m

UTC    dB Audio  Message
100130  -9 1871  YL3NF DN9SIB JN49 (x3)
175430  +4 2950  YL3NF DO1FDK JO41 (x3)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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