SP9DWT — 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: JN99

Receiver-side FT8 activity involving SP9DWT, decoded by SO8OO in southeastern Poland. 1,451 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-23.

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 1,451 FT8 messages attributed to SP9DWT as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (39%), followed by 60 m (34%) and 160 m (22%). Most decodes (88%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -4 dB.

Overview

1,451

Messages attributed

UTC dates decoded

165

Active 15-min windows

-4 dB

Estimated median S/N

Bands

160m · 319 80m · 570 60m · 496 40m · 66

First attributed message: 2026-06-06
Last attributed message: 2026-10-23 19:06 UTC

Observed FT8 message patterns

Attributed sample: 1,451 messages
Active dates: 29 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -13.9 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 86, moderate (-15 to -9 dB) 299, strong (≥ -8 dB) 1,066.

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 SP9DWT in decoded directed-looking exchanges:

DK7TX · Fed. Rep. of Germany ×3 E70SZ · Bosnia-Herzegovina ×3 F4HSB · France ×3 DA6DE · Fed. Rep. of Germany ×2 DG3TF · Fed. Rep. of Germany ×2 F4FTV · France ×2 RI1FJZ · Franz Josef Land ×2 SP8WB · Poland ×2 UN0GY · Kazakhstan ×2 OH7UE · Finland ×2 OZ9FF · Denmark ×2 DG4BZ · Fed. Rep. of Germany ×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 SP9DWT

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 · 725 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 206 km (approx.)
Last such locator decoded: 2026-10-23 19:05 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	SP9DWT S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 19:05	160m	-2 / +3	DK1MFI	-13 / -8	5	✓ Full exchange observed
10-23 18:56	160m	+8 / -	4J3DJ	- / -12	13	✓ Closing fragment
10-23 18:54	160m	+8 / -	4L7T	- / -11	4	✓ Closing fragment
10-23 18:50	160m	+9 / -15	UN0GY	-24 / -19	5	✓ Full exchange observed
10-23 18:46	160m	-4 / -	DL7LAM	- / -	3	Partial capture
10-23 18:43	160m	+2 / -	F4HGF	- / -13	2	✓ Closing fragment
10-23 18:34	160m	-3 / -3	OK2AB	+10 / -	5	✓ Full exchange observed
10-23 18:32	160m	-5 / -8	G4RGK	-24 / -7	5	✓ Full exchange observed
10-23 18:26	160m	+5 / -	DL9KM	-19 / -10	12	Partial capture
10-23 18:24	160m	+13 / -	SP2HMT	+14 / -	6	✓ Full exchange observed
10-23 18:20	160m	+1 / +3	SP2YY	+12 / -	6	✓ Full exchange observed
10-23 18:18	160m	+2 / -	OE6AXG	-6 / -	5	✓ Full exchange observed
10-23 18:10	160m	+4 / -	DD1UN	- / -13	4	✓ Closing fragment
10-23 17:54	160m	-2 / -9	RA4Y	-10 / -10	4	✓ Full exchange observed
10-23 17:52	160m	+6 / +5	DK5SO	-7 / -11	4	✓ Full exchange observed
10-23 17:49	160m	+1 / -13	F6DHD	-8 / -8	5	✓ Full exchange observed
10-23 17:42	160m	+1 / -5	IT9NOV	-16 / -18	5	✓ Full exchange observed
10-23 17:41	160m	+10 / -16	RA6FC	-13 / -19	4	✓ Full exchange observed
10-23 17:39	160m	+4 / -16	SQ1RTU	-12 / +2	6	✓ Full exchange observed
10-23 16:57	160m	+2 / +2	DK3GI	-7 / +10	4	✓ Full exchange observed
10-23 16:54	160m	-9 / -	IZ0PMP	- / -15	3	✓ Closing fragment
10-23 16:48	160m	-15 / -	OK2BPU	-6 / -	6	✓ Full exchange observed
10-23 16:43	160m	-12 / -	SP3HCA	- / -	2	Partial capture
10-23 16:40	160m	-14 / -	LY2BNL	- / -8	4	✓ Closing fragment
10-23 16:27	160m	-20 / -	9A2G	-21 / -3	6	✓ Full exchange observed
10-23 16:22	160m	-16 / -	OM4AB	-1 / -	5	✓ Full exchange observed
10-22 18:26	160m	-9 / -	MW7GQB	-15 / -14	3	✓ Closing observed
10-22 18:22	160m	-18 / 0	SQ6WA	+2 / +7	5	✓ Full exchange observed
10-22 17:30	160m	-5 / -	BD8CS	- / -17	5	✓ Closing fragment
10-22 17:20	160m	-7 / -	EX7DY	- / -16	14	Partial capture
10-22 17:18	160m	-5 / -	R1AV	- / -16	2	✓ Closing fragment
10-22 17:17	160m	-7 / -10	UT0UO	+2 / -	5	✓ Full exchange observed
10-22 17:15	160m	-8 / -	EX7DY	- / -	2	Partial capture
10-22 17:13	160m	-8 / -	G4UZE	- / -18	3	✓ Closing fragment
10-22 17:12	160m	-5 / -30	DG3TF	-15 / -	2	✓ Closing observed
10-22 17:07	160m	-9 / -	EX7DY	- / -20	10	Partial capture
10-22 17:03	160m	-9 / -	SP3BPU	+10 / -	5	✓ Full exchange observed
10-22 17:01	160m	-12 / -	BD8CS	- / -	2	Partial capture
10-22 16:58	160m	-2 / +1	EU1KY	+11 / -	5	✓ Full exchange observed
10-22 16:57	160m	-15 / -4	DG3TF	-10 / -	4	✓ Full exchange observed
10-16 19:13	160m	+19 / -	S57MPU	- / -	3	Partial capture
10-16 19:08	160m	+13 / -	OE3ZIO	-14 / -2	4	✓ Closing observed
10-16 19:05	160m	+8 / -	OE3DOS	- / -	5	Partial capture
10-16 19:03	160m	+5 / -	R7KCK	-19 / -9	4	✓ Closing observed
10-16 19:02	160m	-6 / -	OE3DOS	- / -	2	Partial capture
10-16 19:00	160m	-1 / -	F6GLZ	-16 / -12	4	✓ Full exchange observed
10-16 18:58	160m	-4 / -	DL2AMM	- / -1	2	✓ Closing fragment
10-16 18:55	160m	+2 / -8	DG1LRH	-18 / -1	7	✓ Full exchange observed
10-16 18:53	160m	+2 / -9	R5AV	-8 / -3	4	✓ Full exchange observed
10-16 18:48	160m	+2 / -	OE3KNS	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
185830 +10  511  4J3DJ SP9DWT JN99 (x10)
190530  -5  920  DK1MFI SP9DWT JN99
190545 -13  921  SP9DWT DK1MFI +03
190600  -4  921  DK1MFI SP9DWT R-08
190615 -13  921  SP9DWT DK1MFI RRR
190630  +3  920  DK1MFI SP9DWT 73

60m

UTC    dB Audio  Message
080430 -15 1467  DM2PE SP9DWT 73
080500  +1  743  G7TQB SP9DWT JN99 (x8)
081500  -2  743  DL6RS SP9DWT JN99 (x3)
081615 -14  834  SP9DWT DL6RS -05
081630  +1  743  DL6RS SP9DWT R+07 (x2)

40m

UTC    dB Audio  Message
183600  -7 2055  SP9DWT IQ0YA RR73 (x2)
183700  +3  992  SP9DWT PD9HIX +04 (x2)
183830  -3  412  SP9DWT IZ3ZOG +07 (x2)
185600  -6 2189  SP9DWT M9LCD -04 (x2)
190300  -4  735  SP9DWT IU3UJX -15
190330  -6  735  SP9DWT RR73; F8MRQ <...> -18
190430  -3 1080  SP9DWT ON3CCM -01 (x2)
191030  -9 1485  SP9DWT PE1PHH RR73
191200  -7 1297  SP9DWT DF7PZ +00 (x2)

80m

UTC    dB Audio  Message
195600 -12 1856  DP75BAC SP9DWT R+00
195800  +0 1378  ON5MX SP9DWT R+04
195900  +0  434  DO4CNA SP9DWT JN99
195915  -1  434  SP9DWT DO4CNA +08
195930  +6  434  DO4CNA SP9DWT R+03
200130  +4  463  US5EDZ SP9DWT JN99
200145  +3  463  SP9DWT US5EDZ -02
200200  +1  463  US5EDZ SP9DWT R+06
200215  +2  463  SP9DWT US5EDZ RR73
200215  +3  354  SP9DWT DO6USN +00
200230  +0  463  US5EDZ SP9DWT 73
200245  -3  354  SP9DWT DO6USN +00
200300  +1  355  DO6USN SP9DWT R+08
200315  +2  354  SP9DWT DO6USN RR73
200330  +2  354  DO6USN SP9DWT 73

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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