SP9ALT — 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: JO90

Receiver-side FT8 activity involving SP9ALT, decoded by SO8OO in southeastern Poland. 88 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-26.

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 88 FT8 messages attributed to SP9ALT as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (93%), followed by 80 m (7%). Most decodes (58%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -7 dB.

Overview

88
Messages attributed
8
UTC dates decoded
16
Active 15-min windows
-7 dB
Estimated median S/N

Bands

80m · 6 40m · 82
First attributed message: 2026-06-06
Last attributed message: 2026-08-26 17:01 UTC

Observed FT8 message patterns

Attributed sample
88 messages
Active dates
8 UTC dates
Estimated median S/N
-7 dB
Estimated 10th-90th percentile
-20 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 55.

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 SP9ALT in decoded directed-looking exchanges:

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 SP9ALT

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
JO90 · 54 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
208 km (approx.)
Last such locator decoded
2026-08-26 17:00 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 UTCBandSP9ALT S/NCounterpartCounterpart S/NMsgsCapture
09-04 08:09 40m - / -17 S51PV -13 / - 2 Partial capture
09-04 08:07 40m - / - 9A4ZM -8 / - 2 ✓ Closing fragment
08-27 18:29 20m - / -17 YO6LM -6 / - 3 ✓ Closing fragment
08-27 18:25 20m - / -7 PD9FLX +1 / - 5 ✓ Closing fragment
08-26 17:07 20m - / -4 F4JZW +6 / - 2 Partial capture
08-26 17:01 40m - / +3 DK0BMW -2 / - 5 Partial capture
08-26 17:00 40m +4 / -12 HF5A +2 / +10 5 ✓ Full exchange observed
08-26 16:55 40m - / - DJ0MAB -2 / - 2 Partial capture
08-26 16:55 40m +1 / -8 LZ9HS -12 / -3 12 ✓ Full exchange observed
08-26 16:52 40m - / -7 S54ZGA -8 / - 4 Partial capture
08-26 16:50 40m -1 / -7 YO9BGU -12 / -9 5 Partial capture
08-26 16:46 40m - / - YL3GAO -3 / - 3 Partial capture
08-25 13:55 40m -7 / - IV3FSG -1 / +9 6 ✓ Closing observed
08-25 13:52 40m - / - SQ9BDB -12 / - 7 Partial capture
08-25 13:36 20m - / - F5PBG -12 / - 3 Partial capture
08-25 13:35 20m - / -7 F1PPH +1 / - 3 ✓ Closing fragment
08-25 13:34 20m - / - F4BYA +3 / - 3 Partial capture
08-25 13:31 20m - / - F5IXN +9 / - 4 Partial capture
08-25 13:15 40m -6 / - DK4RH - / -21 2 ✓ Closing fragment
08-25 13:12 40m -6 / -10 OZ9FF -12 / +3 4 ✓ Full exchange observed
08-25 13:09 40m -4 / +3 UX7QV +1 / - 5 ✓ Full exchange observed
08-25 12:59 40m -9 / 0 SP3IPA +1 / +6 5 ✓ Full exchange observed
08-10 21:32 20m - / +2 DL3NA -20 / - 3 Partial capture
08-02 20:20 20m - / -6 IU2THY -12 / - 4 Partial capture
08-02 20:17 20m - / - DB5BC -9 / - 3 Partial capture
08-02 20:16 20m - / - CT1BFP -4 / - 3 Partial capture
08-02 20:09 20m - / +6 R3UAX +4 / - 2 ✓ Closing fragment
08-02 09:54 40m - / - SP9UPH -4 / - 10 Partial capture
08-02 09:54 40m -20 / - SQ9KWY -14 / - 4 ✓ Full exchange observed
08-02 09:40 40m -8 / -3 UT4PA -7 / +10 4 ✓ Full exchange observed
08-02 09:36 40m -8 / - SP9WAZ -17 / -6 3 ✓ Closing observed
08-02 09:33 40m - / - DL9KM -14 / - 2 Partial capture
08-02 09:32 40m - / - UT4PA -8 / - 2 Partial capture
08-02 09:31 40m -9 / - SQ2NIG - / -9 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
170030  +2 2361  CQ SP9ALT JO90
170045  +1 2667  SP9ALT HF5A JO92
170100  +4 2362  HF5A SP9ALT +10
170115  +1 2667  SP9ALT HF5A R-12
170130  +5 2362  HF5A SP9ALT RRR
170145  +3 2667  SP9ALT HF5A 73
170145  -3 2361  SP9ALT DK0BMW +03 (x5)
080745 -11 1859  SP9ALT 9A4ZM JN86 (x2)
080945  -9 2420  SP9ALT S51PV JN76 (x2)
20m 
UTC    dB Audio  Message
133530  -3  879  SP9ALT F1PPH R-07 (x2)
133630 -12  879  SP9ALT F5PBG IN78 (x3)
170745  +6 1977  SP9ALT F4JZW JN08 (x2)
182515  +7 2774  SP9ALT PD9FLX JO22 (x5)
182915  +0 2233  SP9ALT YO6LM KN25 (x3)
80m 
UTC    dB Audio  Message
213100  +3  309  CQ SP9ALT JO90 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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