SP1BMK — 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: JO73

Receiver-side FT8 activity involving SP1BMK, decoded by SO8OO in southeastern Poland. 1,838 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 91 UTC dates in the available aggregate history. Observed between 2026-06-18 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 1,838 FT8 messages attributed to SP1BMK as the transmitting token by decoded message structure across 91 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 80 m (26%) and 20 m (9%). Most decodes (69%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (64%); the estimated median was -5 dB.

Overview

1,838

Messages attributed

UTC dates decoded

324

Active 15-min windows

-5 dB

Estimated median S/N

Bands

160m · 9 80m · 482 40m · 1,176 20m · 171

First attributed message: 2026-06-18
Last attributed message: 2026-10-21 20:13 UTC

Observed FT8 message patterns

Attributed sample: 1,838 messages
Active dates: 91 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -16.9 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 227, moderate (-15 to -9 dB) 438, strong (≥ -8 dB) 1,173.

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 SP1BMK in decoded directed-looking exchanges:

SQ8V · Poland ×8 SP9CXN · Poland ×5 SP7VCL · Poland ×4 SQ9AWN · Poland ×4 SP1ZMO · Poland ×3 SP5ROM · Poland ×3 SP8BJU · Poland ×3 SQ2RAD · Poland ×3 T77RN · San Marino ×3 HF5A · Poland ×2 OE8DDX · Austria ×2 OS4K · Belgium ×2

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 SP1BMK

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: JO73 · 816 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 613 km (approx.)
Last such locator decoded: 2026-10-21 20:13 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	SP1BMK S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 20:12	80m	-5 / -	M7FSE	- / -	3	Partial capture
10-21 20:08	80m	-2 / -2	SM7TZK	-4 / -5	9	✓ Full exchange observed
10-21 19:33	40m	- / 0	I0XNH	-8 / -	2	✓ Closing fragment
10-18 19:48	80m	-4 / -7	YU7BW	+10 / -	3	✓ Closing observed
10-18 19:41	80m	0 / 0	DL9KM	-8 / -18	10	✓ Full exchange observed
10-18 19:40	80m	-6 / +3	OE6TNO	-4 / -9	6	✓ Full exchange observed
10-18 19:18	40m	- / -	HB9ZHK	-22 / -	2	✓ Closing fragment
10-15 19:00	80m	- / -	R7CD	+4 / -	3	Partial capture
10-15 18:43	40m	- / +5	PH9OY	-14 / -	2	✓ Closing fragment
10-15 18:43	40m	- / -1	S57BTI	+10 / -	4	✓ Closing fragment
10-09 07:42	40m	-9 / -1	SQ2RAD	-12 / -	3	✓ Closing observed
10-09 05:12	40m	- / -13	F6HUK	+2 / -	3	Partial capture
10-09 04:54	80m	0 / -4	F5PBG	0 / -2	5	✓ Full exchange observed
10-09 04:53	80m	-4 / -	SQ2RAD	-9 / +2	3	✓ Closing observed
10-09 04:49	80m	0 / +7	SQ5ANT	+1 / +7	4	✓ Full exchange observed
10-09 04:46	80m	0 / -3	IN3IBW	+3 / +7	4	✓ Full exchange observed
10-08 20:05	80m	-4 / -4	OH3CYT	0 / +1	5	✓ Full exchange observed
10-08 20:01	80m	+3 / -4	YO5ODL	+6 / -2	5	✓ Full exchange observed
10-08 19:57	80m	-6 / -	SQ5ANT	- / +4	4	✓ Closing fragment
10-08 19:56	80m	0 / 0	SQ2RAD	+12 / -	5	✓ Full exchange observed
10-07 17:45	40m	-4 / -	VU3OSA	- / -	2	Partial capture
10-07 17:39	80m	+1 / -	DL2ZJA	-5 / +8	3	✓ Closing observed
10-07 17:35	80m	0 / -	SQ8AZT	+3 / -1	5	✓ Closing observed
10-06 19:55	80m	+1 / -	F5RAV	- / -7	2	Partial capture
10-06 19:54	80m	+2 / -	YO4NF	- / -3	2	Partial capture
10-06 19:51	80m	+1 / +3	SQ8NA	+4 / 0	4	✓ Full exchange observed
10-05 19:07	40m	- / -13	GU4WRP	-6 / -	2	✓ Closing fragment
10-04 16:32	40m	-6 / -	BG7BVP	- / -	2	Partial capture
10-04 16:24	40m	-11 / -	DL7UKM	-8 / -	2	✓ Closing observed
10-03 20:09	80m	-2 / -	R2FDP	- / -14	3	✓ Closing fragment
10-03 20:08	80m	- / -	YT5DL	+6 / -	2	Partial capture
10-03 20:06	80m	+4 / +5	SP1MGM	+7 / -	4	✓ Closing observed
10-03 04:39	40m	-17 / -	OA4ENG	- / -	2	Partial capture
09-30 18:25	80m	-4 / -	DO8JB	- / -4	2	✓ Closing fragment
09-30 18:24	80m	-3 / -13	UX7QV	+11 / -5	5	✓ Full exchange observed
09-30 18:21	80m	-1 / -12	R3EDI	-6 / -14	4	✓ Full exchange observed
09-30 18:19	80m	- / -13	RX3ASQ	+1 / -	3	✓ Closing fragment
09-30 18:17	80m	-12 / +3	PJ2/W4IPC	0 / -2	3	Partial capture
09-29 17:45	40m	-14 / -	SQ100PKP	- / +1	2	Partial capture
09-29 17:42	40m	-12 / -	SP9DPM/P	- / -	4	Partial capture
09-29 17:39	80m	-2 / -13	HF40BLP	+11 / +1	3	Partial capture
09-27 19:28	80m	0 / -9	T77RN	-6 / -23	10	✓ Full exchange observed
09-27 07:10	40m	-10 / -	YO4GIY	- / -	3	Partial capture
09-26 19:58	80m	- / -	DO5AX	-16 / -	2	Partial capture
09-26 19:48	80m	-6 / -4	ON3RV	-18 / -12	6	✓ Full exchange observed
09-26 19:46	80m	-8 / -13	IZ8WGR	-8 / -17	5	✓ Full exchange observed
09-26 19:40	80m	-1 / -	DO2AY	-15 / -12	5	✓ Closing observed
09-26 19:40	80m	+2 / -	UA3SCU	-13 / -7	5	✓ Full exchange observed
09-26 19:39	80m	+2 / 0	DO5PY	-2 / -2	3	✓ Full exchange observed
09-26 19:36	80m	-2 / -	LA1HW	- / -12	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
194845 +10 1822  SP1BMK YU7BW -07 (x2)
195045  -6 1823  SP1BMK YO8CRU KN36
200845  -1  776  SM7TZK SP1BMK JO73 (x4)
201100  +1 1955  SP1BMK SM7TZK -02
201115  -5 1956  SM7TZK SP1BMK R-05
201130  -3 1955  SP1BMK SM7TZK RR73
201145  -1 1956  SM7TZK SP1BMK 73
201200 -11 1955  SP1BMK SM7TZK 73
201215  -5 1629  M7FSE SP1BMK JO73 (x3)

40m

UTC    dB Audio  Message
051345  +5  534  SP1BMK F6HUK -13
052000  -3  261  SP1BMK 9A60CBM R-11
074200 -13 2457  SP1BMK SQ2RAD -01 (x2)
074245  -9 2457  SQ2RAD SP1BMK 73
184300 +10 2742  SP1BMK S57BTI JN75
184300 -13 2041  SP1BMK PH9OY R+05
184330  +9 2742  SP1BMK S57BTI JN75
184330 -16 2041  SP1BMK PH9OY 73
184400 +12 2742  SP1BMK S57BTI R-01 (x2)
191800 -22 1791  SP1BMK HB9ZHK JN47 (x2)
193300  -9 1557  SP1BMK I0XNH +00 (x2)

160m

UTC    dB Audio  Message
201845  -5  345  G1SID SP1BMK JO73
191645 -11 2179  CQ SP1BMK JO73
211300 -15  765  SP1BMK DL1WZ JO31
211415 -14 1855  DL1WZ SP1BMK -14
201830 -11 2289  SP1BMK SQ2HEB -07 (x2)
201915 -16 2289  SQ2HEB SP1BMK 73
201200  +3 1725  SP1BMK SN40KZE -03
201300  +6 2691  SP1BMK UA3ZUX KO90
194830 +10  830  SP1BMK SQ100PKP -03
194900  +2  830  SP1BMK RR73; SP7AH <...> +04
200015  +4 2127  SP1BMK 9A5E -16 (x2)
200100 -23 2127  9A5E SP1BMK 73
184315  -2  476  SP1BMK SN40KZE -06

20m

UTC    dB Audio  Message
151300  +2  747  SP1BMK M7ISX JO01 (x2)
151330  +5 1147  SP1BMK EA7KLL -18
151400  +4  747  SP1BMK M7ISX R-08
151400  +5 1147  SP1BMK EA7KLL -18
151430  +7  747  SP1BMK M7ISX R-08
151430  +4 1147  SP1BMK EA7KLL RR73
151500  +5  747  SP1BMK M7ISX 73
151900 -15 2436  SP1BMK F1POK RR73
194515 -24 1456  CQ SP1BMK JO73                        a1
174430  +2 1977  SP1BMK F4JZW JN08 (x2)
180245  +4  464  CQ SP1BMK JO73
173230 -15 1158  SP1BMK HA1BF -07
172200 -13 1327  SP1BMK F1PPH R+04

10m

UTC    dB Audio  Message
195830  -7 2715  SP1BMK LZ2VQ KN23 (x3)

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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