SV1BLD — 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: Greece Most frequent locator attributed to this token: KM17

Receiver-side FT8 activity involving SV1BLD, decoded by SO8OO in southeastern Poland. 2,536 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 56 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-11-02.

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 2,536 FT8 messages attributed to SV1BLD as the transmitting token by decoded message structure across 56 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (62%), followed by 80 m (20%) and 160 m (14%). Most decodes (64%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (91%); the estimated median was +2.5 dB.

Overview

2,536

Messages attributed

UTC dates decoded

205

Active 15-min windows

+2.5 dB

Estimated median S/N

Bands

160m · 360 80m · 499 40m · 1,569 20m · 108

First attributed message: 2026-06-18
Last attributed message: 2026-11-02 03:51 UTC

Observed FT8 message patterns

Attributed sample: 2,536 messages
Active dates: 56 UTC dates
Estimated median S/N: +2.5 dB
Estimated 10th-90th percentile: -8 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 199, strong (≥ -8 dB) 2,319.

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 SV1BLD in decoded directed-looking exchanges:

YY4GPM · Venezuela ×3 C31CT · Andorra ×2 JA9RRH · Japan ×2 OM3SX · Slovak Republic ×2 R5AV · European Russia ×2 SQ5N · Poland ×2 F5LVR · France ×2 OD5ZZ · Lebanon ×2 RX3VF · European Russia ×2 4O7CC · Montenegro 9A0W · Croatia CT1EEX · Portugal

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 SV1BLD

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: KM17 · 1,229 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,386 km (approx.)
Last such locator decoded: 2026-11-02 03:43 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	SV1BLD S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-02 03:42	40m	+16 / -	YY4GPM	- / -10	15	✓ Closing fragment
11-02 03:39	40m	+13 / -	EA4HTI	- / -19	3	✓ Closing fragment
11-02 03:38	40m	+14 / -	K4GDJ	- / -21	5	✓ Closing fragment
11-02 03:36	40m	+11 / -	KK2A	- / -15	5	✓ Closing fragment
11-02 03:33	40m	+10 / -	YO3GNF	-4 / -7	5	✓ Closing observed
11-02 03:32	40m	+9 / -	NP3RK	- / -19	3	Partial capture
11-02 03:24	40m	+12 / -	TN8GD	- / -	2	Partial capture
11-02 03:22	40m	+12 / -	J88IH	- / -17	12	✓ Closing fragment
11-02 03:21	40m	+9 / -	KE5ETC	- / -	2	Partial capture
11-02 03:20	40m	+13 / -	TN8GD	- / -	2	Partial capture
11-02 03:16	40m	+14 / -	KJ4PEO	- / -16	6	Partial capture
11-02 03:15	40m	+10 / -	DF3QL	- / -17	3	Partial capture
11-02 03:14	40m	+14 / -	KJ4EX	- / -	2	Partial capture
11-02 03:10	40m	+13 / -	XE1PM	- / -24	8	✓ Closing fragment
11-02 03:08	40m	+13 / -	NJ3T	- / -	3	Partial capture
11-02 03:07	40m	+12 / -	K4GDJ	- / -	2	Partial capture
11-02 03:03	40m	+10 / -7	EA5HM	-10 / -7	14	Partial capture
11-02 03:01	40m	+7 / -	WB2UBW	- / -	2	Partial capture
11-02 03:00	40m	+10 / -	AA9M	- / -18	4	✓ Closing fragment
11-02 02:58	40m	+13 / -	KM7CCN	- / -	3	Partial capture
11-02 02:57	40m	+14 / -	TI3NEL	- / -	2	Partial capture
11-02 02:56	40m	+15 / -	AA9M	- / -	2	Partial capture
11-02 02:54	40m	+14 / -	NP3F	- / -	3	Partial capture
11-02 02:53	40m	+13 / -	W4JLP	- / -22	3	✓ Closing fragment
11-02 02:51	40m	+10 / -	WV5A	- / -17	4	✓ Closing fragment
11-02 02:48	40m	+12 / -	TI3NEL	- / -	3	Partial capture
11-02 02:46	40m	+12 / -	WV5A	- / -	4	Partial capture
11-02 02:45	40m	+12 / -	TI3NEL	- / -	2	Partial capture
11-02 02:44	40m	+14 / -	NP3F	- / -	2	Partial capture
11-02 02:42	40m	+10 / -	WV5A	- / -	3	Partial capture
11-01 19:53	80m	- / -	DL6EL	+4 / -	3	Partial capture
11-01 19:51	80m	+4 / -	JA7BXS	- / -18	5	✓ Closing fragment
11-01 19:45	80m	+2 / -	Z62NS	- / -	4	Partial capture
11-01 19:41	160m	-4 / -11	OZ1LXL	-2 / -21	11	✓ Full exchange observed
11-01 19:37	160m	-6 / -	C31CT	- / -10	4	✓ Closing fragment
11-01 19:35	160m	-8 / -	F4EZJ	- / -	2	Partial capture
11-01 19:32	160m	-12 / -	OH0Z	- / -	2	Partial capture
11-01 19:32	160m	- / -	OK5LR	-6 / -	4	Partial capture
11-01 19:30	160m	- / -	SQ2BXI	-22 / -	2	Partial capture
11-01 19:29	160m	-6 / -	R1IO	- / -19	2	Partial capture
11-01 19:27	160m	- / -	OK5LR	-9 / -	2	Partial capture
11-01 19:23	160m	-8 / -	LY5W	- / -	3	Partial capture
11-01 19:22	160m	-10 / -	TK4RB	-16 / -3	8	✓ Full exchange observed
11-01 19:21	160m	-6 / -	OH0Z	- / -	2	Partial capture
11-01 19:19	160m	-6 / -	JI1LET	- / -	4	✓ Closing fragment
11-01 19:17	160m	-4 / +1	OH6RE	-4 / -14	5	✓ Full exchange observed
11-01 19:11	160m	+1 / -	JE1CCD	- / -21	2	Partial capture
11-01 19:08	160m	-3 / -2	HA5OV	+10 / -	3	✓ Closing observed
11-01 19:07	160m	+3 / -	JM1JZN	- / -16	3	Partial capture
10-31 20:43	160m	+6 / -	F5BZB	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
034230 +17 2491  YY4GPM SV1BLD KM17 (x15)

80m

UTC    dB Audio  Message
185545  +4 2358  CQ SV1BLD KM17                        a1
185615  +9 2359  RC7LX SV1BLD R-09 (x2)
194530  -1 2393  Z62NS SV1BLD KM17 (x4)
195115  -1 2393  JA7BXS SV1BLD R-18 (x5)
195330  +0  829  SV1BLD DL6EL JN57 (x3)

160m

UTC    dB Audio  Message
193845  -9 2392  C31CT SV1BLD R-10 (x2)
194115  -2 2392  CQ SV1BLD KM17
194130  -3  793  SV1BLD OZ1LXL JO55
194145  +1 2392  OZ1LXL SV1BLD -21
194200  -5 1793  SV1BLD OZ1LXL R-11
194215  -2 2392  OZ1LXL SV1BLD -21
194230 -21 1045  SV1BLD UR4UT -19
194230  -4 1793  SV1BLD OZ1LXL R-06
194245  -6 2392  OZ1LXL SV1BLD RRR
194300  -4 1793  SV1BLD OZ1LXL 73
194315  -4 2392  OZ1LXL SV1BLD RRR
194330  +6  793  SV1BLD OZ1LXL 73
194345 -11 2392  OZ1LXL SV1BLD RRR (x2)

20m

UTC    dB Audio  Message
082045  -2 1928  SV1BLD F4HSB JN37 (x2)
082700  +3 2502  PD0PWH SV1BLD RRR
082900  -3 2502  PI4DX SV1BLD KM17
082915  -1 1057  SV1BLD PI4DX -12 (x4)
083100  -4 2502  K4A SV1BLD KM17
083115  -6 1057  SV1BLD PI4DX -12
083130  -1 2502  K4A SV1BLD KM17
083145  -8 1057  SV1BLD PI4DX -12
083200  -2 2502  PI4DX SV1BLD R-20
083215  -7 1057  SV1BLD PI4DX RR73
083230  -2 2502  PI4DX SV1BLD 73

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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