YO2LDU — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN06

Receiver-side FT8 activity involving YO2LDU, decoded by SO8OO in southeastern Poland. 71 FT8 messages attributed to this token as transmitter, on 60m, across 6 UTC dates in the available aggregate history. Observed between 2026-08-16 and 2026-09-14.

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 71 FT8 messages attributed to YO2LDU as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (100%). Most decodes (100%) fell within the six-hour window 23:00-05:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (85%); the estimated median was -3 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

60m · 71

First attributed message: 2026-08-16
Last attributed message: 2026-09-14 00:00 UTC

Observed FT8 message patterns

Attributed sample: 71 messages
Active dates: 6 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -9 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 60.

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 YO2LDU in decoded directed-looking exchanges:

LZ1GC · Bulgaria ×2 DH3KR · Fed. Rep. of Germany DJ2PW · Fed. Rep. of Germany DL8WEM · Fed. Rep. of Germany HZ1TT · Saudi Arabia M0LAD · England SV9QWC · Crete EA5YI · Spain EA7LGM · Spain PG7R · Netherlands SQ7LQT · Poland US0QV · Ukraine

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 YO2LDU

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: KN06 · 66 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 387 km (approx.)
Last such locator decoded: 2026-09-14 00:00 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	YO2LDU S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 01:27	40m	- / -12	HZ1TT	-6 / -	2	✓ Closing fragment
09-21 01:24	40m	- / -11	M0LAD	-8 / -	2	✓ Closing fragment
09-18 02:37	60m	- / -	G0AZH	-7 / -	7	Partial capture
09-13 23:33	60m	- / -	OH3GBW	-5 / -	3	Partial capture
09-13 23:30	60m	- / -12	EA7LGM	+2 / -	3	✓ Closing fragment
09-13 23:25	60m	- / -	G0AZH	-8 / -	6	Partial capture
09-13 23:22	60m	- / -	PG7R	+4 / -	2	✓ Closing fragment
09-07 03:51	60m	- / -16	MI0OBC	-10 / -	2	Partial capture
09-07 03:44	60m	- / -	G0AZH	-6 / -	6	Partial capture
09-07 03:39	60m	- / -	DL9KM	-20 / -	3	Partial capture
09-07 03:39	60m	+1 / -	LZ1GC	+3 / +2	5	✓ Full exchange observed
09-05 03:44	60m	- / -	IK4CBO	0 / -	2	Partial capture
09-05 03:43	60m	- / -	F4AWT	-12 / -	3	Partial capture
09-01 03:59	40m	- / -	R1BDX	-20 / -	2	Partial capture
09-01 03:57	40m	- / -	DL8WEM	-14 / -	2	✓ Closing fragment
09-01 03:48	40m	- / -10	DJ2PW	-17 / -	2	✓ Closing fragment
09-01 03:46	40m	- / -	RW1AI	-10 / -	2	Partial capture
08-31 00:02	40m	- / -	OO0O	-10 / -	10	Partial capture
08-30 23:41	40m	- / -	EA5HM	-12 / -	5	Partial capture
08-26 04:02	60m	- / -	G0AZH	-8 / -	5	Partial capture
08-26 03:55	60m	-2 / -5	SQ7LQT	-12 / -	3	✓ Closing observed
08-26 03:54	60m	-3 / -11	US0QV	-9 / -16	5	✓ Full exchange observed
08-09 08:23	20m	- / -16	YO4NF	-19 / -	2	Partial capture
08-09 08:20	20m	- / -15	DH3KR	-14 / -	5	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
000745  -6  340  YO2LDU OO0O JO11
001845  -8 1510  YO2LDU SV9QWC RR73
034615 -11 1592  YO2LDU RW1AI KO47 (x2)
034745  -7 2332  YO2LDU F1PBZ -16
034845 -17 1591  YO2LDU DJ2PW R-10 (x2)
035715 -13 1680  YO2LDU DL8WEM 73 (x2)
035945 -17 1677  YO2LDU R1BDX KO59 (x2)
012445 -12 1559  YO2LDU M0LAD -11 (x2)
012715  -6 1729  YO2LDU HZ1TT -12 (x2)

60m

UTC    dB Audio  Message
235800  -9 1524  CQ YO2LDU KN06 (x6)
022830  -3 2328  YO2LDU F6ICX JN18
023445  -9 1122  YO2LDU F5LMJ JN28
023745  -8  577  YO2LDU G0AZH IO83 (x7)

20m

UTC    dB Audio  Message
082030 -17 1464  YO2LDU DH3KR JO30 (x5)
082300 -17 1625  YO2LDU YO4NF -16 (x2)

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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