SP5BB — 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: KO01

Receiver-side FT8 activity involving SP5BB, decoded by SO8OO in southeastern Poland. 815 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 10m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-06 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 815 FT8 messages attributed to SP5BB as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (63%), followed by 40 m (24%) and 160 m (9%). Most decodes (58%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (90%); the estimated median was +4 dB.

Overview

815

Messages attributed

UTC dates decoded

Active 15-min windows

+4 dB

Estimated median S/N

Bands

160m · 72 80m · 514 40m · 193 10m · 36

First attributed message: 2026-06-06
Last attributed message: 2026-10-21 21:45 UTC

Observed FT8 message patterns

Attributed sample: 815 messages
Active dates: 21 UTC dates
Estimated median S/N: +4 dB
Estimated 10th-90th percentile: -8.9 to +16 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 62, strong (≥ -8 dB) 732.

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 SP5BB in decoded directed-looking exchanges:

R5AV · European Russia ×2 PA3CPS · Netherlands ×2 SQ7SE · Poland ×2 SP2GR · Poland ×2 DH1GKS · Fed. Rep. of Germany EA1ENG · Spain EA7UW · Spain EP2AES · Iran IK7IMK · Italy IZ4JMA · Italy OZ1SMB · Denmark PD2WL · Netherlands

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 SP5BB

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: KO01 · 371 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 182 km (approx.)
Last such locator decoded: 2026-10-21 21:44 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	SP5BB S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 21:45	80m	+4 / +5	TA1MB	-8 / -8	4	✓ Full exchange observed
10-21 21:29	80m	- / -	IZ1AJJ	0 / -	3	Partial capture
10-21 21:27	80m	+8 / -4	EU1EU	+4 / -	3	✓ Closing observed
10-21 20:50	80m	- / -	PE1NPS	-6 / -	2	Partial capture
10-21 20:45	80m	+6 / +6	DL6NAC	0 / -8	3	✓ Full exchange observed
10-21 20:43	80m	+10 / -10	DM4SB	-8 / -13	5	✓ Full exchange observed
10-21 20:43	80m	- / -	ON4MAP	-3 / -	6	Partial capture
10-21 20:39	80m	- / -	DK7UY	+6 / -	4	Partial capture
10-21 20:39	80m	+7 / -3	SP2GR	-7 / -5	5	✓ Full exchange observed
10-21 11:41	10m	- / -	EA7UW	-22 / -	2	✓ Closing fragment
10-19 12:19	10m	- / +6	F1PBZ	-2 / -	3	Partial capture
10-15 22:24	80m	-2 / -5	DL7ACA	+5 / -12	5	✓ Full exchange observed
10-15 22:20	80m	+4 / -	DM8ET	- / -5	3	✓ Closing fragment
10-15 22:19	80m	+11 / -6	GM6URC	-10 / -5	3	✓ Full exchange observed
10-15 22:18	80m	+4 / -	OK1AYM	+17 / -	5	✓ Full exchange observed
10-15 22:14	80m	+3 / -24	EA3FN	-12 / -12	9	✓ Full exchange observed
10-15 22:14	80m	- / -11	IK4TVP	+1 / -	6	Partial capture
10-15 21:59	80m	-6 / -7	R2EA/P	-1 / 0	6	✓ Full exchange observed
10-15 21:59	80m	+2 / +2	R7CD	+4 / -1	6	✓ Full exchange observed
10-15 21:50	80m	-1 / -15	EC3A	-21 / -15	6	✓ Full exchange observed
10-15 21:47	80m	+6 / -13	UA3ECJ	-8 / -	3	✓ Closing observed
10-15 21:40	80m	+2 / -15	OE3OOG	+4 / -3	4	✓ Full exchange observed
10-15 21:37	80m	-1 / -14	ON1BH	-11 / -8	4	✓ Full exchange observed
10-15 21:27	80m	-2 / -	SM7HZK	-3 / -5	2	✓ Closing observed
10-15 21:22	80m	-4 / -10	PE0FK	-4 / -5	4	✓ Full exchange observed
10-15 21:15	80m	-3 / -	RU3BF	- / -16	3	✓ Closing fragment
10-15 21:12	80m	-11 / -9	ON4MAP	-18 / -8	2	Partial capture
10-15 21:10	80m	+1 / -2	YT1VDA	-6 / +2	7	✓ Full exchange observed
10-15 21:09	80m	-4 / -	DO1OAS	-14 / -	2	✓ Closing observed
10-15 21:04	80m	-2 / -6	DA6OOM	-12 / -14	5	✓ Full exchange observed
10-15 20:59	80m	+7 / -	IU3IOV	- / -14	5	Partial capture
10-15 20:57	80m	+4 / -13	UA6LQZ	-6 / -11	3	✓ Full exchange observed
10-15 20:55	80m	+7 / -3	OH8KA	-12 / -8	3	✓ Full exchange observed
10-15 20:52	80m	+8 / -	R1BGY	- / -14	2	✓ Closing fragment
10-15 20:49	80m	+7 / -	DO5PY	-11 / -15	3	✓ Closing observed
10-15 20:48	80m	+8 / -	TA3STR	- / -5	2	✓ Closing fragment
10-15 20:45	80m	+6 / -	RX3ASQ	- / -8	2	✓ Closing fragment
10-15 20:43	80m	+4 / -10	R5AV	+8 / -3	4	✓ Full exchange observed
10-14 17:20	80m	+13 / -	R4IK	- / -15	4	Partial capture
10-14 17:15	80m	+6 / -11	SQ2JYJ	0 / +3	4	✓ Full exchange observed
10-14 17:14	80m	+8 / -	DK8HC	- / -14	2	✓ Closing fragment
10-13 20:50	160m	+2 / -	US2YW	+1 / +5	11	Partial capture
10-13 20:49	160m	-3 / 0	LX1JX	-8 / -3	4	✓ Full exchange observed
10-13 20:47	160m	-6 / -16	OK2BUZ	+22 / -	4	✓ Full exchange observed
10-13 20:45	160m	-4 / -	4J3DJ	- / -17	3	✓ Closing fragment
10-13 20:43	160m	-5 / -2	SP3PLD	+20 / +3	5	✓ Full exchange observed
10-13 20:40	160m	+2 / -10	SQ2BXI	-12 / -10	6	✓ Full exchange observed
10-13 20:39	160m	-1 / -1	OM2WQ	+14 / +5	5	✓ Full exchange observed
10-13 20:37	160m	+6 / -10	PI4DX	+6 / +2	5	✓ Full exchange observed
10-13 20:35	160m	+2 / 0	SQ9ZM	+8 / +3	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
205030  -9 2398  SP5BB PE1NPS JO22
205030  +6 1929  SP5BB DL9ATW JO61
205045 +11 2610  CQ SP5BB KO01
212730  +2 1001  SP5BB EU1EU -04
212730  +7 2609  SP5BB DK7UY JO44
212800  +6 1001  SP5BB EU1EU RR73
212815  +8 2609  EU1EU SP5BB 73
212900  -2 2609  SP5BB IZ1AJJ JN44 (x3)
214445  +3 2263  CQ SP5BB KO01
214515  +1 2263  TA1MB SP5BB -08
214530  -9 2263  SP5BB TA1MB R+05
214545  +7 2263  TA1MB SP5BB RR73
214600  -7 2263  SP5BB TA1MB 73

10m

UTC    dB Audio  Message
120730  -6 1104  SP5BB EA7Z R+07
145945  -9 2218  SP5BB EP2AES R+03 (x2)
134930 -18 1595  SP5BB CS7BPG IN51 (x2)
151400  -5 2494  SP5BB CR7BUW IM58 (x2)
121930  -2 2542  SP5BB F1PBZ +06 (x3)
122030 -10 2495  SP5BB CR7BUW R+16
104045 -24 1629  SP5BB TF5B R+21
113730 -15  784  SP5BB EA4FL R+08
114100 -24 1430  SP5BB EA7UW IM76 (x2)

160m

UTC    dB Audio  Message
205015  +5 1878  SP5BB US2YW KN28
205015  -3 2600  SP5BB LX1JX 73
205045  -4 1878  SP5BB US2YW KN28
205100  +5 1877  CQ SP5BB KO01
205115  -4 1878  SP5BB US2YW KN28
205130  +4 1877  US2YW SP5BB +05
205145  -2 1877  SP5BB US2YW KN28
205200  +1 1877  US2YW SP5BB -04
205215  -2 1877  SP5BB US2YW KN28
205230  -6 1877  CQ SP5BB KO01                         a1
205245  +6 1877  SP5BB US2YW KN28
205300  -1 1877  CQ SP5BB KO01
205315  +4 1877  SP5BB US2YW KN28 (x3)

40m

UTC    dB Audio  Message
095315  -6 2175  CQ SP5BB KO01 (x2)
095415 -16 2174  SP4GDW SP5BB R+01 (x2)
095615  -9 2175  CQ SP5BB KO01
095645  -5 2175  FR4KM/P SP5BB -01
095715 -13 2175  IN3LHF SP5BB R-18 (x2)
095815  -9 2175  FR4KM/P SP5BB -02 (x2)
095915  -7 2174  SQ7KHW SP5BB -06
095945 -12 2175  CQ SP5BB KO01 (x3)
100115  -7 2175  ON5ACO SP5BB R-15

20m

UTC    dB Audio  Message
144400  +1 3040  SP5BB UT4QM R+05 (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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