YU1JW — 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: Serbia Most frequent locator attributed to this token: JN93

Receiver-side FT8 activity involving YU1JW, decoded by SO8OO in southeastern Poland. 59 FT8 messages attributed to this token as transmitter, on 160m, 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-31 and 2026-10-16.

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 59 FT8 messages attributed to YU1JW as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (85%), followed by 10 m (12%) and 20 m (3%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (85%); the estimated median was +1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

160m · 50 20m · 2 10m · 7

First attributed message: 2026-07-31
Last attributed message: 2026-10-16 21:21 UTC

Observed FT8 message patterns

Attributed sample: 59 messages
Active dates: 4 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -20 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 50.

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 YU1JW in decoded directed-looking exchanges:

DF7EE · Fed. Rep. of Germany DN9DA · Fed. Rep. of Germany DN9OPA · Fed. Rep. of Germany DO3HCS · Fed. Rep. of Germany F4HSB · France OK1STK · Czech Republic SH0JPO · Sweden SP9JP · Poland 4J3DJ · Azerbaijan EA5RU · Spain F5UTN · France G0ACQ · England

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 YU1JW

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: JN93 · 19 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 747 km (approx.)
Last such locator decoded: 2026-10-16 21:17 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	YU1JW S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-16 21:20	160m	+2 / -	R5AV	- / -14	3	Partial capture
10-16 21:19	160m	+6 / -	F5UTN	-17 / -18	3	✓ Closing observed
10-16 21:18	160m	- / -	M0HYE	-16 / -	3	Partial capture
10-16 21:17	160m	+6 / +3	SQ3RX	+1 / -5	5	✓ Full exchange observed
10-16 21:15	160m	+6 / -	LA9JKA	- / -20	4	Partial capture
10-16 21:14	160m	+4 / -	G0ACQ	- / -20	2	✓ Closing fragment
10-16 21:11	160m	+8 / -18	YL2EA	-4 / -20	6	✓ Full exchange observed
10-16 21:10	160m	- / -	M0HYE	-15 / -	2	Partial capture
10-16 21:10	160m	- / -	LA9JKA	-8 / -	3	Partial capture
10-16 21:10	160m	0 / +1	OM2WW	+9 / -3	6	✓ Full exchange observed
10-16 21:09	160m	+2 / -21	UA4FKT	-12 / -19	10	✓ Full exchange observed
10-16 21:06	160m	- / -	IU0NAD	-12 / -	2	Partial capture
10-16 21:04	160m	-1 / -9	4J3DJ	0 / -11	12	✓ Full exchange observed
10-16 21:03	160m	- / -17	R5AV	-2 / -	2	Partial capture
10-16 21:01	160m	+2 / -	YL2EA	- / -14	3	Partial capture
10-16 21:00	160m	+3 / -6	EA5RU	-6 / -8	3	✓ Full exchange observed
10-16 20:59	160m	-3 / 0	OE4KQW	+5 / -1	3	✓ Full exchange observed
10-16 20:58	160m	- / -	YL2EA	0 / -	2	Partial capture
10-16 20:58	160m	+2 / +1	HG9FS	0 / -9	4	✓ Full exchange observed
10-03 20:56	160m	- / -	OK1KUB	-2 / -	4	Partial capture
10-03 20:56	160m	- / -	UB3IBG	-7 / -	3	Partial capture
10-03 20:56	160m	- / -	DM2PE	-11 / -	2	Partial capture
10-03 20:53	160m	+5 / -	SP9DGO	+10 / -7	7	✓ Full exchange observed
08-21 20:32	10m	-24 / -	SP9JP	- / -3	2	✓ Closing fragment
08-21 20:25	10m	- / -5	DN9OPA	-1 / -	3	✓ Closing fragment
08-21 16:11	10m	- / +4	OK1STK	-3 / -	3	✓ Closing fragment
08-21 16:10	10m	- / -17	PE1NPS	-20 / -	3	Partial capture
08-21 16:03	10m	- / -	DF7EE	-4 / -	5	✓ Closing fragment
08-21 16:03	10m	- / -	F4HSB	-19 / -	3	✓ Closing fragment
08-21 15:57	10m	- / -	DO3HCS	-8 / -	3	✓ Closing fragment
08-21 15:56	10m	- / 0	DN9DA	-18 / -	3	✓ Closing fragment
08-06 18:54	40m	- / -	DH2YBG	-11 / -	5	Partial capture
07-31 05:17	20m	-22 / -	DL1R	-4 / -4	8	Partial capture
07-31 05:10	20m	- / -14	R1QD	-16 / -	3	✓ Closing fragment
07-31 04:38	20m	- / -5	UR3AHB	-10 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
211745  -6  609  YU1JW SQ3RX JO81
211745 -13 1459  YU1JW R5AV -19
211800  +4 1459  SQ3RX YU1JW -05
211815  -3  609  YU1JW SQ3RX R+03
211815 -24  683  YU1JW M0HYE IO94
211830  +7 1459  SQ3RX YU1JW RR73
211845 +11  609  YU1JW SQ3RX 73
211900  +8 1459  F5UTN YU1JW -18
211915 -13  684  YU1JW M0HYE IO94
211930  +4 1459  F5UTN YU1JW RR73
211945 -11  684  YU1JW M0HYE IO94
211945 -17 1464  YU1JW F5UTN 73
212000  +1 1459  R5AV YU1JW R-14 (x3)

10m

UTC    dB Audio  Message
161045 -21 2279  YU1JW PE1NPS JO22 (x2)
161145  -4 1668  YU1JW OK1STK JO60 (x3)
202230 -14 1667  CQ YU1JW JN93
202300 -19 1667  DH5BM YU1JW +00
202500 -19 1668  CQ YU1JW JN93
202515  -1 2892  YU1JW DN9OPA JN38 (x3)
203130 -21 1668  SH0JPO YU1JW RR73
203200 -24 1668  SP9JP YU1JW -03 (x2)
203500 -20 1667  DJ0MAB YU1JW -20

40m

UTC    dB Audio  Message
185400 -11 2343  YU1JW DH2YBG JO43 (x5)

20m

UTC    dB Audio  Message
043930 -11 1190  YU1JW UR3AHB RR73
050600 -11  386  YU1JW UR4QWW R-03
051030 -15 1548  YU1JW R1QD -14 (x3)
051300 -12 1751  YU1JW ON1JP RR73
051645 -20 1496  CQ YU1JW JN93
051715 -22 1496  DL1R YU1JW -04
051730  -6 2671  YU1JW DL1R JN58 (x7)

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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