SP5BK — 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: Poland Most frequent locator attributed to this token: KO02

Receiver-side FT8 activity involving SP5BK, decoded by SO8OO in southeastern Poland. 96 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-23.

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 96 FT8 messages attributed to SP5BK as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (65%), followed by 80 m (35%). In this small sample, the estimated median decoder S/N was +2 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+2 dB

Estimated median S/N

Bands

80m · 34 40m · 62

First attributed message: 2026-08-23
Last attributed message: 2026-08-23 20:04 UTC

Observed FT8 message patterns

Attributed sample: 96 messages
Active dates: 1 UTC dates
Estimated median S/N: +2 dB
Estimated 10th-90th percentile: -7 to +8 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 91.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SP5BK in decoded directed-looking exchanges:

9A4ZM · Croatia ×2 UX7QV · Ukraine ×2 VK3JMA · Australia EW8AAC · Belarus F4ELU · France PE1OPL · Netherlands RX3ASQ · European Russia RX3VF · European Russia RY3F · European Russia SP3SXU · Poland SP7TF · Poland SV3AUW · Greece

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 SP5BK

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: KO02 · 56 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 290 km (approx.)
Last such locator decoded: 2026-08-23 20:04 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	SP5BK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-24 05:01	40m	- / -	PE1NPS	-11 / -	3	Partial capture
08-24 05:00	40m	- / -7	SV3AUW	-18 / -	2	✓ Closing fragment
08-24 04:52	20m	- / -13	VK3JMA	-21 / -	2	✓ Closing fragment
08-24 04:47	20m	- / -	RZ4FWA	-22 / -	2	Partial capture
08-24 04:43	40m	- / +6	F4ELU	-14 / -	2	✓ Closing fragment
08-24 04:40	40m	- / -14	UA3POG	-16 / -	2	✓ Closing fragment
08-24 04:37	40m	- / -	DK7ZT	+1 / -	4	Partial capture
08-24 04:36	40m	- / -9	YO4NF	0 / -	3	✓ Closing fragment
08-23 19:41	80m	- / -	UT1EF	+1 / -	4	Partial capture
08-23 19:41	80m	+6 / -	DO4HHK	- / +4	2	✓ Closing fragment
08-23 19:40	80m	- / -	SP9UPH	+19 / -	5	Partial capture
08-23 19:38	80m	+6 / -11	UR5NPF	+8 / -	5	✓ Full exchange observed
08-23 19:08	40m	- / -	DJ1TU	+1 / -	18	Partial capture
08-23 19:05	40m	- / +8	DK7ZT	-5 / -	3	Partial capture
08-23 19:02	40m	-4 / -	PE1OPL	- / -5	6	✓ Closing fragment
08-23 18:53	80m	+6 / -13	SP1905MFK	+1 / -	2	Partial capture
08-23 18:51	80m	+9 / -	RA2FU	- / +5	3	✓ Closing fragment
08-23 18:49	80m	+6 / -	LY3QR	-17 / -3	3	✓ Full exchange observed
08-23 18:48	80m	- / -	DO9BAU	+2 / -	10	Partial capture
08-23 18:47	80m	- / -	DO1MDO	0 / -	6	Partial capture
08-23 18:47	80m	+6 / -12	UX7QV	+9 / -	5	✓ Full exchange observed
08-23 18:42	80m	+4 / -10	DL1UDO	0 / +6	6	✓ Full exchange observed
08-23 18:42	80m	- / -	DL3JHK	-14 / -	2	Partial capture
08-23 18:42	80m	- / -	PA0KGB	-9 / -	9	Partial capture
08-23 18:40	80m	+2 / +2	DM2BM	-4 / +5	5	✓ Full exchange observed
08-23 18:40	80m	- / -	SP9UPH	+23 / -	3	Partial capture
08-23 18:38	80m	+5 / -3	DK7ZT	-2 / +8	4	✓ Full exchange observed
08-23 18:33	40m	-8 / -7	RY3F	-4 / -	5	✓ Closing observed
08-23 18:31	40m	+2 / -6	RX3ASQ	-8 / +4	5	✓ Full exchange observed
08-23 18:30	40m	0 / -	SP7TF	+2 / -	3	✓ Closing observed
08-23 18:26	40m	+4 / -7	RX3VF	-6 / -	3	✓ Closing observed
08-23 18:23	40m	+2 / +4	SP3SXU	-1 / -	5	✓ Full exchange observed
08-23 18:20	40m	+10 / -	UX7QV	-2 / -	5	✓ Closing observed
08-23 18:15	40m	- / -2	DK7ZT	-1 / -	3	Partial capture
08-23 18:13	40m	+4 / -	YL3FW	- / +4	3	✓ Closing fragment
08-23 18:01	40m	- / -	SP3CUG	-8 / -	2	Partial capture
08-23 18:00	40m	- / -	UA3VVA	-10 / -	3	Partial capture
08-23 18:00	40m	- / -	UX7QV	0 / -	7	Partial capture
08-23 17:59	40m	- / -1	DK7ZT	-8 / -	2	Partial capture
08-23 17:58	40m	- / -	OK3WOD	-19 / -	2	Partial capture
08-23 17:56	40m	-4 / -21	UR5VLC	-8 / +1	5	✓ Full exchange observed
08-23 17:56	40m	- / -	SQ8GHZ	+4 / -	3	Partial capture
08-23 17:53	40m	-7 / -	PD1GOL	- / -	3	Partial capture
08-23 17:53	40m	- / -5	DK7ZT	-10 / -	2	Partial capture
08-23 17:52	40m	-7 / -2	9A4ZM	-3 / +10	6	✓ Full exchange observed
08-23 17:51	40m	- / -	DL7VAR	+6 / -	3	Partial capture
08-23 17:49	40m	-10 / -12	EW8AAC	-5 / -	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
043715  +1 1907  SP5BK DK7ZT +15
043745  +0 1273  SP5BK YO4NF RR73
043745  +1 1907  SP5BK DK7ZT +15 (x3)
044015 -18 1544  SP5BK UA3POG R-14 (x2)
044345 -13 1411  SP5BK F4ELU +06 (x2)
044545  -3  731  SP5BK F4IIX IN95
050045 -16 1239  SP5BK SV3AUW -07 (x2)
050145 -13 2338  SP5BK PE1NPS JO22 (x3)

20m

UTC    dB Audio  Message
192745 -13 2700  SP5BK BA3QIQ OM99
192845 -13 1740  SP5BK 9A4ZM 73
044745 -19 2070  SP5BK RZ4FWA LO23
044745 -21 1455  SP5BK K7NN DM42
044845 -24 2071  SP5BK RZ4FWA LO23
045015 -19 1494  SP5BK VK3JMA -13 (x3)

80m

UTC    dB Audio  Message
193930 +12 1667  CQ SP5BK KO02 (x2)
194015 +19  761  SP5BK SP9UPH JO90
194030  +5 1667  CQ SP5BK KO02
194045 +20  760  SP5BK SP9UPH JO90
194100  +7 1667  DO4HHK SP5BK +04
194115  +5 2609  SP5BK UT1EF KN67
194130  +6 1667  DO4HHK SP5BK RR73
194145 +11 2608  SP5BK UT1EF KN67 (x2)
194215 +19  761  SP5BK SP9UPH JO90
194245  -7 2608  SP5BK UT1EF KN67
194245 +18  761  SP5BK SP9UPH JO90 (x2)
200430 +11 1236  MW7GQB SP5BK KO02

60m

UTC    dB Audio  Message
180530  -7 1237  SP5BK SP3CUG JO82

CW

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

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee