XW4KV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Laos Most frequent locator attributed to this token: OK18

Receiver-side FT8 activity involving XW4KV, decoded by SO8OO in southeastern Poland. 176 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-07.

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 176 FT8 messages attributed to XW4KV as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (91%), followed by 10 m (9%). Most decodes (90%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

176

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

20m · 161 10m · 15

First attributed message: 2026-06-06
Last attributed message: 2026-09-07 10:29 UTC

Observed FT8 message patterns

Attributed sample: 176 messages
Active dates: 4 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -16 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 88, strong (≥ -8 dB) 65.

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 XW4KV in decoded directed-looking exchanges:

DF7WH · Fed. Rep. of Germany DG5FAZ · Fed. Rep. of Germany DL1ABI · Fed. Rep. of Germany DL1JHR · Fed. Rep. of Germany DL6MRM · Fed. Rep. of Germany DL6TK · Fed. Rep. of Germany OK2MFD · Czech Republic 4X1UF · Israel 9A4BL · Croatia 9A5GG · Croatia CN8NS · Morocco CR5VP · Portugal

Most frequent locator attributed to XW4KV

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: OK18 · 60 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,824 km (approx.)
Last such locator decoded: 2026-08-08 19:13 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	XW4KV S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-07 10:21	10m	-5 / -	DL9KM	- / -8	12	Partial capture
09-07 10:20	10m	-8 / -	OK2MFD	- / -5	2	✓ Closing fragment
08-31 20:33	20m	- / -21	R7ZY	-10 / -	4	Partial capture
08-31 20:01	20m	-8 / -25	IK1JGS	+2 / -17	4	✓ Full exchange observed
08-31 19:23	20m	- / -16	DL6EL	+18 / -	3	✓ Closing fragment
08-31 19:15	20m	- / -20	ON5GQ	0 / -	2	Partial capture
08-31 19:13	20m	- / -16	DK6IM	+18 / -	2	✓ Closing fragment
08-31 18:58	20m	- / -17	EA5HEU	+8 / -	3	✓ Closing fragment
08-31 18:51	20m	- / -	F4GPB	+8 / -	2	Partial capture
08-31 18:47	20m	- / -14	EA2AA	+10 / -	3	✓ Closing fragment
08-31 18:42	20m	- / -21	R4AEH	+3 / -	4	✓ Closing fragment
08-31 18:40	20m	- / -21	F4HEN	-4 / -	2	✓ Closing fragment
08-31 18:38	20m	- / -23	IU2UBS	-8 / -	3	✓ Closing fragment
08-31 18:36	20m	- / -	F4NGK	-3 / -	2	Partial capture
08-31 18:32	20m	- / -14	GM4FDM	+14 / -	2	✓ Closing fragment
08-31 18:16	20m	- / -	PD1GJB	-14 / -	4	Partial capture
08-31 18:15	20m	- / -21	DL5KSS	-7 / -	3	✓ Closing fragment
08-31 18:09	20m	- / -	RU3G	0 / -	5	Partial capture
08-31 18:06	20m	- / -22	R3TY	+2 / -	3	✓ Closing fragment
08-31 18:04	20m	- / -	LA2GCA	-1 / -	5	Partial capture
08-31 17:58	20m	- / -5	DK3RV	+3 / -	2	Partial capture
08-31 17:56	20m	- / -	G6MTI	-3 / -	3	Partial capture
08-31 17:32	20m	- / -3	DL1R	+2 / -	2	Partial capture
08-31 17:31	20m	- / -11	DL1FUG	+10 / -	3	✓ Closing fragment
08-31 17:30	20m	- / -12	DL4BHA	0 / -	2	Partial capture
08-18 12:55	10m	- / -4	DG5FAZ	-4 / -	3	✓ Closing fragment
08-18 12:37	10m	- / -	DM2WG	-23 / -	3	Partial capture
08-18 11:57	10m	- / -24	F4HSR	-11 / -	7	Partial capture
08-18 11:55	10m	- / -21	DA6DE	-21 / -	3	Partial capture
08-18 11:54	10m	- / -5	PA3CGJ	-15 / -	3	Partial capture
08-18 11:47	10m	- / -	DO2JUF	-14 / -	3	Partial capture
08-18 11:45	10m	- / -10	DL6TK	-9 / -	3	✓ Closing fragment
08-18 11:45	10m	- / -	DO3BZ	-2 / -	3	Partial capture
08-18 11:40	10m	- / -13	DL6MRM	-10 / -	3	✓ Closing fragment
08-18 11:40	10m	- / -	DL0FTT	-18 / -	5	Partial capture
08-18 11:34	10m	- / -19	DF7WH	-10 / -	3	✓ Closing fragment
08-18 11:33	10m	- / -	DO7RMS	-7 / -	3	Partial capture
08-18 11:32	10m	- / -	SA6DST	-6 / -	5	Partial capture
08-18 11:21	10m	- / -	DN9CHV	-22 / -	6	Partial capture
08-18 11:19	10m	- / -	DN9BLN	-10 / -	2	Partial capture
08-18 11:17	10m	- / -	DN9CHV	-22 / -	3	Partial capture
08-18 11:14	10m	- / -22	DL1ABI	-8 / -	5	✓ Closing fragment
08-18 11:11	10m	- / -	DN9CHV	-18 / -	4	Partial capture
08-15 17:38	20m	- / -18	UX0ZAB	-9 / -	3	✓ Closing fragment
08-15 16:51	20m	- / -17	F6DZU	+5 / -	3	Partial capture
08-15 15:46	20m	- / -18	SV2TTC	-2 / -	2	Partial capture
08-15 15:29	20m	- / -14	PA7MM	-2 / -	3	✓ Closing fragment
08-15 15:24	20m	- / -14	SV2TTC	-4 / -	2	Partial capture
08-08 21:13	20m	- / -12	IK2GAU	-10 / -	3	✓ Closing fragment
08-08 21:06	20m	- / -18	F4HJN	-12 / -	8	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
102015  -9  378  OK2MFD XW4KV -05 (x2)
102145  -3  377  DL9KM XW4KV -08 (x12)
102945  -8  375  OZ1AKZ XW4KV +01

20m

UTC    dB Audio  Message
193500  -5 2426  XW4KV EA1KBT -18
195700 -13 1888  XW4KV M9KTM R-24
195915 -11  481  OS8E XW4KV R-21
195945 -14  481  OH1ZE XW4KV RR73
200015 -12  481  M9KTM XW4KV RR73
200100  +3 1440  XW4KV IK1JGS -25
200115  -6  481  IK1JGS XW4KV R-17
200130  +0 1440  XW4KV IK1JGS RR73
200145 -10  481  IK1JGS XW4KV 73
200215  -9  481  SP0LPR XW4KV -15
203200 -15  477  XW4KV IU2UBU R-14
203300 -11 2439  XW4KV R7ZY KN98 (x4)

40m

UTC    dB Audio  Message
213800  -2  678  XW4KV EA5CRC IM98 (x4)

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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