YO4ATW — 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: Romania Most frequent locator attributed to this token: KN35

Receiver-side FT8 activity involving YO4ATW, decoded by SO8OO in southeastern Poland. 243 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 21 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-10-27.

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 243 FT8 messages attributed to YO4ATW as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (59%), followed by 80 m (26%) and 40 m (15%). Most decodes (59%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

243

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 64 40m · 36 20m · 143

First attributed message: 2026-07-07
Last attributed message: 2026-10-27 11:43 UTC

Observed FT8 message patterns

Attributed sample: 243 messages
Active dates: 21 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -23 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 82, moderate (-15 to -9 dB) 67, strong (≥ -8 dB) 94.

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 YO4ATW in decoded directed-looking exchanges:

EC5M · Spain ×3 F1PBZ · France ×2 9A5E · Croatia ×2 CT7AUT · Portugal ×2 VP2MAA · Montserrat ×2 EA1IOK · Spain ×2 HB9EFK · Switzerland ×2 UR5SG · Ukraine ×2 ON5RZ · Belgium TT1GD · Chad DL9KM · Fed. Rep. of Germany EA3ISZ · Spain

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 YO4ATW

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: KN35 · 104 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 628 km (approx.)
Last such locator decoded: 2026-10-27 04:23 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	YO4ATW S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-30 23:20	40m	- / -	F5PBG	+5 / -	2	Partial capture
10-28 23:23	40m	- / -	F8MRQ	+4 / -	4	Partial capture
10-27 04:34	80m	- / -	KN1OBI	-19 / -	2	Partial capture
10-27 04:19	80m	- / -16	EA1IOK	-13 / -	3	✓ Closing fragment
10-27 02:52	80m	-15 / 0	P4/WE9V	-17 / -16	13	Partial capture
10-27 02:15	80m	- / -15	OM2WQ	+10 / -	3	Partial capture
10-25 02:13	40m	- / -	F4FPR	-12 / -	5	Partial capture
10-24 00:30	40m	- / -16	F1PBZ	-6 / -	3	Partial capture
10-21 03:04	80m	- / -2	P4/WE9V	-10 / -	3	Partial capture
10-17 02:49	80m	- / -8	XE2X	-16 / -	2	Partial capture
10-17 01:37	80m	- / -14	PI4DX	+6 / -	2	✓ Closing fragment
10-10 13:24	10m	- / -7	TT1GD	-14 / -	4	✓ Closing fragment
10-08 06:09	80m	- / -	F4GUK	-7 / -	3	Partial capture
10-06 03:44	40m	- / -8	LX1TI	+4 / -	2	✓ Closing fragment
10-06 02:55	40m	- / +2	CT3MD	-9 / -	6	✓ Closing fragment
10-06 01:26	40m	- / -	KI8JP	-6 / -	2	✓ Closing fragment
10-03 04:17	40m	- / -15	SV3AUW	-15 / -	4	✓ Closing fragment
10-03 04:13	40m	- / -19	YV5KG	-15 / -	4	✓ Closing fragment
10-03 03:49	40m	- / -8	CT7AUT	-15 / -	3	✓ Closing fragment
10-03 03:43	40m	- / -	TA3NK	-5 / -	5	Partial capture
10-03 03:42	40m	- / -	F5PBG	0 / -	2	Partial capture
10-03 03:33	40m	- / -18	3Z4DX	-10 / -	2	✓ Closing fragment
10-03 03:26	40m	- / -	EA1IOK	-14 / -	5	Partial capture
10-03 03:26	40m	- / -	F5PBG	-4 / -	2	Partial capture
10-03 03:23	40m	- / -17	3Z4DX	-12 / -	2	Partial capture
10-03 03:14	40m	- / -	G3TKT	-10 / -	2	Partial capture
10-03 03:07	40m	- / -18	3Z4DX	-10 / -	3	Partial capture
10-03 02:51	40m	- / -	F5PBG	-12 / -	2	Partial capture
10-03 02:37	40m	- / -	F1IQH	-7 / -	4	Partial capture
10-03 02:03	40m	- / -	EA1IOK	-16 / -	3	Partial capture
10-03 02:03	40m	- / -	F5PBG	-8 / -	2	Partial capture
10-03 01:41	40m	- / -22	3Z4DX	-10 / -	2	Partial capture
10-03 01:36	40m	- / -	SP9CLQ	-19 / -	3	✓ Closing fragment
10-03 01:23	40m	- / -	EA1IOK	-15 / -	2	Partial capture
10-03 01:22	40m	- / -	F5PBG	-1 / -	2	Partial capture
10-01 01:08	40m	- / -	F4BYA	+19 / -	4	Partial capture
09-27 05:19	80m	- / -15	F4FSY	-11 / -	2	Partial capture
09-25 05:33	40m	- / -	PA3CPS	-18 / -	2	Partial capture
09-25 05:04	40m	- / -	F1IQH	-10 / -	2	Partial capture
09-25 04:29	40m	- / -12	F4FSY	-6 / -	4	Partial capture
09-25 04:20	40m	- / -8	F1PBZ	+4 / -	4	Partial capture
09-25 04:19	40m	- / -	F4BYA	+14 / -	3	Partial capture
09-25 04:19	40m	- / -7	F4FSY	-10 / -	2	Partial capture
09-25 04:19	40m	- / -	EB3JT	-8 / -	6	Partial capture
09-25 04:16	40m	- / -7	KS4OT	-14 / -	3	✓ Closing fragment
09-25 04:15	40m	- / -	F4BYA	+10 / -	4	Partial capture
09-25 04:04	40m	- / -	EA1IOK	-15 / -	2	Partial capture
09-25 04:02	40m	- / -	F4BYA	+1 / -	4	Partial capture
09-25 03:56	40m	- / -	F4BYA	-1 / -	3	Partial capture
09-25 03:54	40m	- / -4	HI3K	-5 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
003045  -6 2542  YO4ATW F1PBZ -16 (x2)
021345 -10 2264  YO4ATW F4FPR IN88 (x5)
022015 -19 1545  YO4ATW HI7AMB -16
114330 -15  911  LZ2KSQ YO4ATW 73
232315  +2  509  YO4ATW F8MRQ JN17 (x4)
232000  +4 2314  YO4ATW F5PBG IN78 (x2)

80m

UTC    dB Audio  Message
025530 -22  697  YO4ATW RR73; EA3Y <...> -10
025545 -16  696  P4/WE9V YO4ATW R-16 (x5)
025900 -14 2887  YO4ATW XE2X +00
032645 -24  742  OK2UPY/P YO4ATW KN35
033000 -24 1991  YO4ATW KN1OBI FN42
041900 -23 1050  YO4ATW EA1IOK -16 (x3)
042315 -17  697  P4/WE9V YO4ATW KN35
043430 -19 1991  YO4ATW KN1OBI FN42 (x2)

10m

UTC    dB Audio  Message
124345  -4 2539  YO4ATW F1PBZ -04 (x2)
170615 -14 1800  YO4ATW ON5RZ R-16 (x2)
130245 -14 2151  YO4ATW R7OV R+10
132400 -12 2246  YO4ATW TT1GD -07 (x4)

20m

UTC    dB Audio  Message
215545 -14 2252  IZ1HJU YO4ATW -21 (x2)
215645 -14 2251  JH1LPZ YO4ATW -19 (x2)
215745  -8 2250  CQ YO4ATW KN35 (x5)
220015 -14 2248  UB8CSJ YO4ATW -20 (x2)
220115 -13 2246  CQ YO4ATW KN35 (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.

CW

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

Explore CW reception at SO8OO

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