YU7BW — 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: JN95

Receiver-side FT8 activity involving YU7BW, decoded by SO8OO in southeastern Poland. 734 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 20 UTC dates in the available aggregate history. Observed between 2026-07-28 and 2026-10-21.

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 734 FT8 messages attributed to YU7BW as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (47%), followed by 160 m (28%) and 40 m (20%). Most decodes (69%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (92%); the estimated median was +8 dB.

Overview

734

Messages attributed

UTC dates decoded

Active 15-min windows

+8 dB

Estimated median S/N

Bands

160m · 207 80m · 344 60m · 33 40m · 150

First attributed message: 2026-07-28
Last attributed message: 2026-10-21 10:18 UTC

Observed FT8 message patterns

Attributed sample: 734 messages
Active dates: 20 UTC dates
Estimated median S/N: +8 dB
Estimated 10th-90th percentile: -7.8 to +17 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 53, strong (≥ -8 dB) 675.

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 YU7BW in decoded directed-looking exchanges:

R1TAX · European Russia ×2 A61DD · United Arab Emirates C5R · The Gambia CM7DJG · Cuba DG6SCK · Fed. Rep. of Germany DK6WS · Fed. Rep. of Germany EA6ABF · Balearic Islands ES2AJ · Estonia EW2GI · Belarus F5PBG · France GJ0KYZ · Jersey IK4JPP · Italy

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 YU7BW

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: JN95 · 261 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 536 km (approx.)
Last such locator decoded: 2026-10-21 10:13 UTC

Other locator fields attributed to this token: KN05 (190).

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	YU7BW S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 10:16	40m	-10 / -5	S53AK	-2 / +4	8	✓ Full exchange observed
10-21 10:15	40m	-10 / -7	DG6SCK	-15 / -4	7	✓ Full exchange observed
10-21 10:15	40m	-9 / -	PD4RJ	- / -19	3	Partial capture
10-21 10:13	40m	-12 / +5	SK7RN	-19 / -10	5	✓ Full exchange observed
10-21 10:08	40m	-9 / -1	DK6WS	-22 / -12	4	✓ Full exchange observed
10-21 10:06	40m	-13 / -	IZ5HEV	- / -	3	Partial capture
10-21 08:43	40m	-4 / -17	PE1NPS	-18 / -18	6	✓ Full exchange observed
10-21 08:41	40m	-4 / -21	EW2GI	-16 / -5	6	✓ Full exchange observed
10-21 08:40	40m	-6 / -	TF5B	- / -	4	Partial capture
10-21 06:19	40m	-9 / -	C5R	- / -19	9	✓ Closing fragment
10-21 06:03	40m	-6 / +2	IK4JPP	-6 / -	6	✓ Full exchange observed
10-21 06:00	40m	-8 / -	MI0NWA	- / -23	6	✓ Closing fragment
10-21 04:01	40m	- / +2	GJ0KYZ	+8 / -	4	✓ Closing fragment
10-21 04:00	40m	- / -22	ES2AJ	-15 / -	2	✓ Closing fragment
10-21 03:57	40m	- / -	RA6HN	-15 / -	3	Partial capture
10-21 02:51	40m	- / -4	ON1JP	-20 / -	6	Partial capture
10-18 20:46	80m	- / -15	R2BQM	-14 / -	2	Partial capture
10-18 20:45	80m	+18 / -	OM3PR	+8 / +4	5	✓ Full exchange observed
10-18 20:42	80m	- / -13	R2BQM	-10 / -	3	Partial capture
10-18 20:42	80m	+19 / -2	JA2VQF	-12 / -20	4	✓ Full exchange observed
10-18 20:40	80m	+16 / -	JR3REX	-13 / -17	3	✓ Closing observed
10-18 20:39	80m	+18 / -	DK8CX	+8 / -8	5	✓ Full exchange observed
10-18 20:38	80m	+16 / -7	JA5MHD	-12 / -20	4	✓ Full exchange observed
10-18 20:37	80m	- / -	BH4RWP	-21 / -	2	Partial capture
10-18 20:36	80m	+19 / -5	JA5XAE	-8 / -21	4	✓ Full exchange observed
10-18 20:36	80m	- / -12	R2BQM	-10 / -	3	Partial capture
10-18 20:35	80m	+18 / +1	4Z5AV	-11 / -11	3	✓ Full exchange observed
10-18 20:31	80m	- / -	JH0RNN	-14 / -	2	Partial capture
10-18 20:29	80m	+13 / -	DL1UDO	+1 / -12	3	✓ Closing observed
10-18 20:26	80m	- / -	JA6LCJ	-13 / -	9	Partial capture
10-18 20:25	80m	- / -14	R2BQM	-11 / -	4	Partial capture
10-18 20:23	80m	+16 / -	JG2AJK	- / -21	2	✓ Closing fragment
10-18 20:22	80m	+16 / -10	JA0FVU	-9 / -20	14	✓ Full exchange observed
10-18 20:21	80m	- / -11	R2BQM	-16 / -	2	Partial capture
10-18 20:21	80m	+16 / -2	HL1WP	-7 / -17	5	✓ Full exchange observed
10-18 20:21	80m	+18 / -9	JA5AQC	-13 / -20	13	✓ Full exchange observed
10-18 20:21	80m	+17 / -5	JH1RFR	-8 / -11	9	✓ Full exchange observed
10-18 20:20	80m	+15 / -	JE7JDL	- / -14	2	✓ Closing fragment
10-18 20:19	80m	+20 / -2	JA0CRI	-6 / -14	3	✓ Full exchange observed
10-18 20:18	80m	+16 / -	JH4IFF	-11 / -19	5	✓ Closing observed
10-18 20:18	80m	+20 / -5	JK1OZS	-4 / -17	4	✓ Full exchange observed
10-18 20:14	80m	- / -6	JA3FYC	-14 / -	2	Partial capture
10-18 20:12	80m	- / -15	R2BQM	-16 / -	4	Partial capture
10-18 20:11	80m	- / -11	JG2AJK	-16 / -	2	Partial capture
10-18 20:08	80m	+19 / +7	DF5AH	+5 / -11	9	✓ Full exchange observed
10-18 20:08	80m	+19 / -3	JA0LFV	-16 / -21	8	✓ Full exchange observed
10-18 20:07	80m	- / -	DO5AX	-24 / -	2	Partial capture
10-18 20:07	80m	+20 / -6	JA0DAI	-16 / -14	5	✓ Full exchange observed
10-18 20:06	80m	+19 / -8	F1PBZ	-8 / -16	5	✓ Full exchange observed
10-18 20:06	80m	+19 / -1	JA7BXS	-17 / -19	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
101600 -16 2135  YU7BW DG6SCK JN48
101615  -6 2042  PD4RJ YU7BW -19
101630  -6  845  YU7BW S53AK JN76
101630 -15 2135  YU7BW DG6SCK JN48
101645  -7 2042  DG6SCK YU7BW -04
101700  +1  845  YU7BW S53AK JN76
101700 -15 2135  YU7BW DG6SCK R-07
101715 -12 2042  DG6SCK YU7BW RRR
101730  -1  845  YU7BW S53AK JN76
101730 -16 2135  YU7BW DG6SCK 73
101800  +1  845  YU7BW S53AK JN76
101815 -12 2042  S53AK YU7BW +04
101830  -3  844  YU7BW S53AK R-05
101845  -8 2042  S53AK YU7BW RRR
101900  -2  844  YU7BW S53AK 73

80m

UTC    dB Audio  Message
204300 +15 2621  CQ DX YU7BW JN95 (x2)
204345  -6 2620  YU7BW R2BQM -13
204400 +15 2621  CQ DX YU7BW JN95
204415 -14 2620  YU7BW R2BQM -13
204415 -22 1230  YU7BW BH4RWP OM91
204430 +15 2621  CQ DX YU7BW JN95 (x2)
204515  +8 2623  YU7BW OM3PR JN87
204530 +17 2621  OM3PR YU7BW +04
204545  +8 2623  YU7BW OM3PR R+20
204600 +19 2621  OM3PR YU7BW RR73
204615  +9 2623  YU7BW OM3PR 73
204645 -10 2621  YU7BW R2BQM -15 (x2)

160m

UTC    dB Audio  Message
211445  -5 1703  RI1FJZ YU7BW KN05 (x4)
165115 -13 1259  H49A YU7BW JN95 (x11)

60m

UTC    dB Audio  Message
162245  -9 2002  H49A YU7BW JN95 (x15)

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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