YL3MA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Latvia Most frequent locator attributed to this token: KO35

Receiver-side FT8 activity involving YL3MA, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-30.

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 68 FT8 messages attributed to YL3MA as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (76%), followed by 20 m (24%). Most decodes (57%) fell within the six-hour window 09:00-15:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

20m · 16 10m · 52

First attributed message: 2026-06-07
Last attributed message: 2026-08-30 11:17 UTC

Observed FT8 message patterns

Attributed sample: 68 messages
Active dates: 10 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -17 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 35.

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 YL3MA in decoded directed-looking exchanges:

CE2SV · Chile EA1Z · Spain EA8UP · Canary Islands IK4TVP · Italy PD0JMB · Netherlands PD1DTH · Netherlands PD5FK · Netherlands PD5SAP · Netherlands SV1CQN · Greece TM2WWA · France UR3HC · Ukraine CN2DX · Morocco

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 YL3MA

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: KO35 · 37 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 711 km (approx.)
Last such locator decoded: 2026-08-30 11:16 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	YL3MA S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 11:16	20m	-16 / -4	PD1TVN	+16 / -	6	✓ Full exchange observed
08-30 11:15	20m	-16 / -	IQ4JO	+3 / -	3	✓ Closing observed
08-09 14:59	20m	-20 / -	K2AK	- / -	2	Partial capture
08-01 18:29	20m	- / -	F6BHK	-15 / -	2	✓ Closing fragment
08-01 18:27	20m	- / -	R2AL	-12 / -	2	Partial capture
08-01 18:26	20m	- / -4	M7JVT	-20 / -	2	Partial capture
08-01 18:23	20m	- / -	M7JVT	-18 / -	2	Partial capture
08-01 18:23	20m	- / -	PD9SD	-16 / -	2	Partial capture
08-01 18:22	20m	-10 / -	SQ3MZM	- / -11	2	Partial capture
08-01 18:10	20m	- / -	R2AL	-12 / -	2	Partial capture
08-01 18:09	20m	- / -2	M8KKH	0 / -	2	Partial capture
08-01 11:29	20m	- / -14	PD0HLA	-9 / -	2	Partial capture
08-01 09:52	10m	- / -17	SV1CQN	-5 / -	2	✓ Closing fragment
07-25 19:31	20m	- / 0	M0PBG	-11 / -	2	✓ Closing fragment
07-25 19:30	20m	- / 0	DL3MIB	-4 / -	6	✓ Closing fragment
07-25 19:20	20m	- / -5	CN2DX	-4 / -	2	✓ Closing fragment
07-07 03:02	20m	- / -1	SP6AXW	-1 / -	5	✓ Closing fragment
07-06 22:54	20m	- / -15	HI8J	-16 / -	2	Partial capture
07-06 22:53	20m	- / -3	CU6AD	-9 / -	2	✓ Closing fragment
07-06 22:47	20m	- / -3	HA1BF	-1 / -	2	✓ Closing fragment
07-06 09:28	10m	- / +1	PD5FK	-13 / -	2	✓ Closing fragment
07-06 09:20	10m	- / -	PE9JAN	-12 / -	3	Partial capture
07-06 09:18	10m	- / 0	DK8RE	-12 / -	3	Partial capture
07-05 23:26	40m	- / +7	DK7ZT	-7 / -	5	✓ Closing fragment
07-02 12:11	20m	- / -17	UR4QWW	-20 / -	2	Partial capture
07-02 10:26	10m	- / -1	TM2WWA	+4 / -	2	✓ Closing fragment
06-28 18:07	10m	-6 / +3	UR3HC	+11 / -	6	✓ Full exchange observed
06-28 18:06	10m	-4 / -	YO2LFP	- / -	2	Partial capture
06-27 20:44	10m	- / -18	CE2SV	+2 / -	3	✓ Closing fragment
06-27 20:39	10m	- / -3	EA8UP	-20 / -	2	✓ Closing fragment
06-27 20:04	10m	- / -	LZ2EW	-12 / -	6	Partial capture
06-27 19:57	10m	-16 / -	EA1Z	-18 / -	5	✓ Closing observed
06-27 19:56	10m	-12 / -	PD0JMB	- / -3	2	✓ Closing fragment
06-22 22:06	10m	- / -	IK4TVP	-13 / -	2	✓ Closing fragment
06-22 13:47	10m	- / -	EA8BYO	-11 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
182700 -12 1131  YL3MA R2AL KO85 (x2)
182930 -16 1613  YL3MA F6BHK JN24 (x2)
145900 -20 2016  K2AK YL3MA KO35 (x2)
111500 -19 2220  IQ4JO YL3MA R+19
111515  +3 2216  YL3MA IQ4JO RR73
111530 -13 2220  IQ4JO YL3MA 73
111600 -16  644  PD1TVN YL3MA KO35
111615 +17  640  YL3MA PD1TVN -04
111630 -14  644  PD1TVN YL3MA R+13
111645 +18  640  YL3MA PD1TVN RR73
111700 -17  644  PD1TVN YL3MA R+13
111815 +14  640  YL3MA PD1TVN RR73

10m

UTC    dB Audio  Message
205100  -3  859  YL3MA RL3K KO91
102615  +8 2608  YL3MA TM2WWA -01 (x2)
091600  -5 2050  YL3MA PD5SAP 73
091845 -17 2396  YL3MA DK8RE JO61 (x3)
092045 -13 1914  YL3MA PE9JAN JO22 (x3)
092545  -6  957  YL3MA PD1DTH 73
092800 -13 2481  YL3MA PD5FK R+01 (x2)
095230  -9 1813  YL3MA SV1CQN -17 (x2)

40m

UTC    dB Audio  Message
232600  -8 1906  YL3MA DK7ZT +07 (x4)
232800 -16 1789  YL3MA GB13COL R-12
232815 -10 1905  YL3MA DK7ZT +09

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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