SP4BP — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO03

Receiver-side FT8 activity involving SP4BP, decoded by SO8OO in southeastern Poland. 113 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-19.

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 113 FT8 messages attributed to SP4BP as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (65%), followed by 80 m (29%) and 20 m (6%). The busiest six-hour window was 15:00-21:00 UTC, containing 44% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

113

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 33 40m · 73 20m · 7

First attributed message: 2026-06-10
Last attributed message: 2026-09-19 15:49 UTC

Observed FT8 message patterns

Attributed sample: 113 messages
Active dates: 19 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -18 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 40, strong (≥ -8 dB) 57.

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 SP4BP in decoded directed-looking exchanges:

SP5HWB · Poland ×2 PE9JAN · Netherlands DK7UY · Fed. Rep. of Germany SP5ROM · Poland 9A5E · Croatia SQ5EKY · Poland

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 SP4BP

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: KO03 · 83 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 400 km (approx.)
Last such locator decoded: 2026-09-19 15:49 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	SP4BP S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 15:46	40m	-2 / -	YU65AEC	- / -	4	Partial capture
09-15 06:22	40m	- / -10	GJ0KYZ	-14 / -	3	Partial capture
09-11 12:43	40m	-8 / -	II8IHBC	- / +8	5	Partial capture
09-11 12:36	40m	-8 / -	II8IHBC	- / -	7	Partial capture
09-09 08:28	40m	-7 / -	DK8HC	- / -6	3	Partial capture
09-09 08:25	40m	-8 / -5	DK7UY	-18 / +6	5	✓ Full exchange observed
09-09 08:23	40m	-8 / +3	3Z100PKP	-9 / -5	4	Partial capture
09-09 08:22	40m	-12 / -	SO100PKP	- / +3	2	Partial capture
09-07 08:07	40m	-12 / -	R73SLET	- / -	2	Partial capture
09-05 06:13	40m	- / -16	SP100PKP	+16 / -	2	Partial capture
09-05 06:12	40m	-8 / -	SQ2RBY/P	- / -11	4	Partial capture
09-04 10:35	40m	-16 / -	<...>	- / -	2	Partial capture
09-03 05:38	40m	-6 / -	<...>	- / +1	3	Partial capture
08-25 03:31	40m	- / -10	II7MGBT	+4 / -	3	Partial capture
08-24 06:27	40m	-7 / -	<...>	- / +4	10	Partial capture
08-21 05:36	40m	-9 / -	HI3JCC	- / -	9	Partial capture
08-06 06:53	20m	- / -5	RZ4FWA	-18 / -	4	Partial capture
08-03 03:20	80m	+2 / +1	9A5E	+16 / -	5	✓ Full exchange observed
07-30 07:35	20m	- / +8	F1PSX	-12 / -	3	Partial capture
07-30 07:35	20m	- / -15	IW2DNI	-9 / -	5	Partial capture
07-30 07:35	20m	- / -3	PE9JAN	-13 / -	5	✓ Closing fragment
07-26 18:52	80m	-5 / -1	SP5HWB	-2 / -	3	✓ Full exchange observed
07-23 16:34	40m	-22 / -	SP5ROM	- / -	3	Partial capture
07-21 05:57	40m	-23 / -17	SP5ROM	-16 / -	3	✓ Closing observed
07-21 05:31	40m	- / -18	SP5HWB	-18 / -	2	✓ Closing fragment
07-20 20:10	80m	-6 / -5	SQ5EKY	+8 / -11	9	✓ Full exchange observed
07-20 19:53	80m	-6 / -	SQ5EKY	- / -	19	Partial capture
07-20 19:09	40m	-15 / -	YB2TTM	- / -	4	Partial capture
07-18 11:04	10m	- / -	EA3DYI	-18 / -	2	Partial capture
07-18 10:57	20m	- / -16	PD3LKN	-17 / -	4	Partial capture
07-18 10:54	20m	- / 0	RN6MA	0 / -	2	Partial capture
07-18 10:45	20m	-18 / -	WA3KCP	- / -	3	Partial capture
06-29 09:53	10m	- / -23	II6WWA	+12 / -	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
124400  +3 2122  SP4BP HF100PKP -07
124415  -5  805  II8IHBC SP4BP R+15 (x3)
124700 +10 2677  SP4BP DG0JK JO60
062100  -1 2513  SP4BP SN40KZE -11
062200 -15 2243  SP4BP GJ0KYZ -10 (x3)
062600  +9 1105  SP4BP 3Z100PKP -21
154615  -2 2241  YU65AEC SP4BP KO03 (x4)
155030 -16 1686  SP4BP II8IHBC -11

20m

UTC    dB Audio  Message
073630 -15 1676  SP4BP F1PSX R+08
073700 -15 2523  SP4BP PE9JAN R-03 (x2)
073730  -8  582  SP4BP IW2DNI JN45 (x3)
075315 -20 2394  SP4BP G4DBW -08
065300 -15 2026  SP4BP RZ4FWA LO23 (x4)
065600 -15 1195  SP4BP PA3EVY JO11
065600 -15 1187  SP4BP F1PPH JN25 (x2)
160500 -21 1756  SP4BP II7MGXX +08

80m

UTC    dB Audio  Message
201130  -2 1107  SQ5EKY SP4BP KO03 (x2)
201215  +4 1504  SP4BP SQ5EKY -05
201230  -8 1354  SQ5EKY SP4BP R-11
201245 +11 1504  SP4BP SQ5EKY RR73
201300 -10 1353  SQ5EKY SP4BP 73
185215  -5 1598  SP4BP SP5HWB -01
185230  -5 1598  SP5HWB SP4BP R+18
185245  +2 1598  SP4BP SP5HWB RR73
032030  +2 1599  9A5E SP4BP KO03
032045 +16 1135  SP4BP 9A5E +01
032100  +0 1599  9A5E SP4BP R+29
032115 +17 1135  SP4BP 9A5E RR73
032130  +3 1599  9A5E SP4BP 73
041615  -7 1705  DO1FFO SP4BP KO03

10m

UTC    dB Audio  Message
095315 +14 2850  SP4BP II6WWA -23 (x2)
110400 -17 1439  SP4BP EA3DYI JN11 (x2)

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.

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