YO8CLX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN36

Receiver-side FT8 activity involving YO8CLX, decoded by SO8OO in southeastern Poland. 229 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-29.

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 229 FT8 messages attributed to YO8CLX as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (67%), followed by 40 m (28%) and 20 m (5%). Several six-hour UTC windows tied for the largest share (92%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was +4 dB.

Overview

229

Messages attributed

UTC dates decoded

Active 15-min windows

+4 dB

Estimated median S/N

Bands

80m · 153 40m · 65 20m · 11

First attributed message: 2026-06-09
Last attributed message: 2026-09-29 05:13 UTC

Observed FT8 message patterns

Attributed sample: 229 messages
Active dates: 6 UTC dates
Estimated median S/N: +4 dB
Estimated 10th-90th percentile: -14 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 58, strong (≥ -8 dB) 167.

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 YO8CLX in decoded directed-looking exchanges:

F1PBZ · France ×2 HA3GX · Hungary ×2 UT0CK · Ukraine ON7KEI · Belgium SQ9KWY · Poland YO3FFE · Romania DL1STG · Fed. Rep. of Germany DL1UDO · Fed. Rep. of Germany DL3HN · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany F5LMJ · France SP1ZMO · Poland

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 YO8CLX

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: KN36 · 181 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 543 km (approx.)
Last such locator decoded: 2026-09-29 05:13 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	YO8CLX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-29 04:52	80m	- / -6	SP5TAE	-8 / -	3	Partial capture
09-29 04:48	80m	-3 / -	SP5TAE	-15 / -17	4	Partial capture
08-04 02:58	80m	+7 / -15	F5LMJ	-15 / -17	5	✓ Full exchange observed
08-04 02:51	80m	+2 / +7	US1VM	+5 / -	5	✓ Full exchange observed
08-04 02:41	80m	+10 / -	VE3XN	- / -	3	Partial capture
08-04 02:37	80m	+12 / +10	DL1STG	-11 / -4	5	✓ Full exchange observed
08-04 02:35	80m	+12 / -	UA3RCW	- / -17	2	✓ Closing fragment
08-04 02:32	80m	+8 / -	TJ1GD/P	- / -	2	Partial capture
08-04 02:29	80m	+10 / -4	F1PBZ	+10 / +6	5	✓ Full exchange observed
08-04 02:26	80m	+8 / -	UR3QRP	-3 / -1	4	✓ Closing observed
08-04 02:22	80m	+12 / -10	DL1UDO	-7 / -8	5	✓ Full exchange observed
08-04 02:20	80m	+6 / -5	DL3HN	-8 / +3	5	✓ Full exchange observed
08-04 02:10	80m	+8 / -	K3VN	- / -	4	Partial capture
08-04 02:06	80m	+10 / -2	SP1ZMO	+4 / +4	5	✓ Full exchange observed
08-04 02:05	80m	+15 / -5	DL9KM	-4 / -11	5	✓ Full exchange observed
08-04 02:03	80m	+16 / -9	HA3GX	+4 / +8	5	✓ Full exchange observed
08-04 01:59	80m	+16 / -	W3ICM	- / -	4	Partial capture
07-28 07:08	20m	- / +4	UT0CK	-10 / -	3	✓ Closing fragment
07-28 05:48	20m	- / -6	TA3NK	-8 / -	2	Partial capture
07-27 15:36	20m	- / -	UA4CDN	-14 / -	3	Partial capture
07-27 15:17	20m	- / -8	F1PBZ	-6 / -	2	✓ Closing fragment
07-10 05:11	40m	-15 / -2	YO3FFE	-12 / -	4	✓ Full exchange observed
07-10 05:09	40m	-14 / -	R6FMK	- / +3	2	Partial capture
07-10 04:49	40m	-13 / -	N4MMR	- / -	2	Partial capture
07-10 04:39	40m	-14 / -	PV8AJ	- / -	2	Partial capture
07-10 04:30	40m	-12 / -	CN2DX	- / -9	7	Partial capture
07-10 04:27	40m	-12 / -	WA2HIP	- / -	4	Partial capture
07-10 04:24	40m	-10 / -	R2PX	- / +3	2	Partial capture
07-10 04:21	40m	-8 / -	WA2HIP	- / -	3	Partial capture
07-10 04:18	40m	-9 / -	ON7KEI	- / -5	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
050315  +4  816  CQ YO8CLX KN36 (x15)

20m

UTC    dB Audio  Message
151800  -3 2769  YO8CLX F1PBZ RR73
151930 -15 1084  YO8CLX UA4CDN LO21 (x5)
054830 -10  893  YO8CLX TA3NK KN39 (x2)
061330 -16 1540  YO8CLX PD9FLX R-21
070830 -10  895  YO8CLX UT0CK R+04 (x3)
071230  -4  894  YO8CLX UA4A LN28
102615 -18  894  CQ YO8CLX KN36                        a1 (x2)

40m

UTC    dB Audio  Message
045645 -17  853  CQ YO8CLX KN36
050745 -14  852  SQ9KWY YO8CLX RR73
050815 -15  852  CQ YO8CLX KN36                        a1 (x2)
050915 -14  852  R6FMK YO8CLX +03 (x2)
051130 -11  852  YO8CLX YO3FFE KN23
051145 -15  852  YO3FFE YO8CLX +16
051200 -11  852  YO8CLX YO3FFE R-02 (x2)
051245 -11  852  CQ YO8CLX KN36 (x3)
051445 -13  852  SP5DUJ YO8CLX +00
051545 -11  853  CQ YO8CLX KN36

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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