SP9PSB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JN99

Receiver-side FT8 activity involving SP9PSB, decoded by SO8OO in southeastern Poland. 171 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-11.

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 171 FT8 messages attributed to SP9PSB as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (70%), followed by 80 m (30%). Most decodes (56%) fell within the six-hour window 09:00-15:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

171

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

80m · 51 40m · 120

First attributed message: 2026-06-07
Last attributed message: 2026-09-11 18:27 UTC

Observed FT8 message patterns

Attributed sample: 171 messages
Active dates: 26 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -22 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 88, moderate (-15 to -9 dB) 30, strong (≥ -8 dB) 53.

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 SP9PSB in decoded directed-looking exchanges:

SP5ROM · Poland ×2 SQ9AWN · Poland ×2 HA7WFF · Hungary LY1SR · Lithuania LY3BES · Lithuania ON1DGN · Belgium ON4CJU · Belgium OZ3MC · Denmark PC7E · Netherlands PE1NAO · Netherlands R1QAM · European Russia SN0GIP · 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 SP9PSB

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: JN99 · 20 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 206 km (approx.)
Last such locator decoded: 2026-09-11 18:25 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	SP9PSB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 05:10	80m	- / -2	HF100PKP	+1 / -	2	Partial capture
09-11 18:27	80m	- / -	RK6OQ	+2 / -	2	Partial capture
09-11 18:25	80m	+4 / -5	SP9KKA	+6 / -	5	✓ Closing observed
09-10 04:13	80m	-5 / +9	SP100PKP	+15 / -1	6	Partial capture
09-08 04:07	80m	-5 / -9	DK7ZT	+8 / -2	4	✓ Full exchange observed
09-08 04:06	80m	+1 / -	OZ/KD0NDU	- / -7	2	Partial capture
09-06 04:51	80m	+9 / -	SP100PKP	- / -9	4	Partial capture
08-30 18:06	80m	- / -	UA4FKT	+7 / -	4	Partial capture
08-30 18:05	80m	+5 / -11	SQ7EQB	+8 / -15	5	✓ Full exchange observed
08-30 05:16	80m	-10 / +2	SP8BJU	+8 / +1	5	✓ Full exchange observed
08-28 17:17	80m	- / -10	DK7ZT	-3 / -	5	Partial capture
08-28 17:16	80m	+7 / +1	HF30NPN	+3 / -4	2	Partial capture
08-28 04:55	80m	- / -	DL9KM	-4 / -	7	Partial capture
08-28 04:54	80m	- / -13	DK7ZT	-4 / -	5	Partial capture
08-28 04:53	80m	+3 / -11	SN40KZE	+1 / 0	3	Partial capture
08-27 18:19	80m	-13 / -6	HF30NPN	-7 / -7	5	Partial capture
08-27 03:34	80m	- / -	F5MYK	-14 / -	2	Partial capture
08-27 03:32	80m	+11 / 0	SN40KZE	+2 / -1	3	Partial capture
08-26 03:26	80m	-7 / -1	SN40KZE	+12 / +2	3	Partial capture
08-24 05:38	40m	- / -	GJ0KYZ	-16 / -	2	Partial capture
08-24 05:37	40m	- / -10	US2YW	-14 / -	3	✓ Closing fragment
08-23 14:38	40m	-6 / -	SQ3EWA	- / -9	3	✓ Closing fragment
08-18 17:29	40m	-8 / -	SP5ROM	- / -4	2	✓ Closing fragment
08-15 12:24	40m	-22 / -	R1QAM	- / -16	8	✓ Closing fragment
08-15 12:15	40m	-19 / -	M8GGQ	- / -15	7	Partial capture
08-15 11:52	40m	-18 / -	PA2RO	- / -1	3	Partial capture
08-15 11:46	40m	-16 / -	SP3AVS	- / +1	4	✓ Closing fragment
08-15 11:44	40m	-17 / -	SP5WS	- / -10	3	✓ Closing fragment
08-15 11:38	40m	-22 / +3	LY1SR	-19 / +1	4	✓ Full exchange observed
08-15 11:35	40m	-21 / -	PC7E	- / -4	6	✓ Closing fragment
08-15 11:17	40m	-18 / -	LY3BES	- / -2	2	✓ Closing fragment
08-15 11:11	40m	-19 / -	HA7WFF	-24 / +5	9	✓ Closing observed
08-15 10:51	40m	-16 / -	IK4LZH	- / -3	9	Partial capture
08-15 10:46	40m	-18 / -	MN0HNQ/LH	- / +1	2	Partial capture
08-15 10:44	40m	-15 / -	PE1NAO	- / -12	3	✓ Closing fragment
08-15 10:43	40m	-14 / -	LZ1DIO	- / -15	2	Partial capture
08-15 10:38	40m	-17 / -	MN0HNQ/LH	- / -4	2	Partial capture
08-15 10:30	40m	-17 / -	ON4CJU	- / -6	3	✓ Closing fragment
08-15 10:17	40m	-15 / -	LZ1DIO	- / -8	4	Partial capture
08-15 10:14	40m	-16 / -	OZ3MC	- / -10	4	✓ Closing fragment
08-15 09:56	40m	-17 / -	GM6ZAK	- / -13	5	Partial capture
08-09 16:51	40m	-18 / -	SN0GIP	-16 / +5	4	✓ Full exchange observed
08-08 09:04	40m	-20 / -	SQ9JTI	-22 / +3	2	Partial capture
08-04 18:13	80m	+4 / -5	SQ5NO	-22 / -14	4	✓ Full exchange observed
08-04 17:09	40m	-20 / -	SP9TEX	- / -12	8	Partial capture
08-01 17:30	40m	-11 / -3	SQ9MEZ	-8 / +2	5	✓ Full exchange observed
08-01 16:49	40m	- / -	HF5A	-8 / -	2	Partial capture
08-01 16:48	40m	-20 / -	SQ9AWN	-14 / +4	4	✓ Full exchange observed
07-31 17:52	40m	-16 / -	<...>	- / -8	2	Partial capture
07-24 17:48	80m	-3 / -	SQ9AWN	0 / 0	5	✓ 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
041445  -6 1866  SP100PKP SP9PSB JN99
041500 -17 1445  SP9PSB SO100PKP -13
041515  -3 1866  SP100PKP SP9PSB R-15 (x2)
041630  -1 1726  SP9PSB 3Z100PKP +07
182530  +4 1279  SP9KKA SP9PSB JN99
182615  +5 1754  SP9PSB SP9KKA -05 (x3)
182730  +3 1279  SP9KKA SP9PSB 73
182745  +4 1158  SP9PSB RK6OQ KN87 (x2)
041600  -4 1558  SP9PSB SO100PKP R-08
051015  -3 1558  SP9PSB HF100PKP R-02 (x2)

40m

UTC    dB Audio  Message
122830 -24 1484  CQ SP9PSB JN99
122930 -22 1483  ON1DGN SP9PSB 73
172945  -7 1314  SP5ROM SP9PSB -04 (x2)
062330 -11 2175  SP9PSB SP5ROM 73
143845  -7 1694  SQ3EWA SP9PSB JN99 (x3)
053615 +14  725  SP9PSB SN40KZE +14
053715 -13 1460  SP9PSB US2YW KN28 (x3)
053845 -15 1462  SP9PSB GJ0KYZ IN89 (x2)
051530 +12 1123  SP9PSB SN40KZE +01

20m

UTC    dB Audio  Message
153600  +5  516  SP9PSB UA4FEN +05 (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.

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