SP7SLO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland

Receiver-side FT8 activity involving SP7SLO, decoded by SO8OO in southeastern Poland. 53 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-18.

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 53 FT8 messages attributed to SP7SLO as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (55%), followed by 80 m (45%). Most decodes (77%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -3 dB.

Overview

53
Messages attributed
13
UTC dates decoded
17
Active 15-min windows
-3 dB
Estimated median S/N

Bands

80m · 24 40m · 29
First attributed message: 2026-06-10
Last attributed message: 2026-09-18 14:16 UTC

Observed FT8 message patterns

Attributed sample
53 messages
Active dates
13 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-16 to +9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 36.

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 SP7SLO 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.

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 UTCBandSP7SLO S/NCounterpartCounterpart S/NMsgsCapture
09-21 19:17 40m - / -1 HB9ELE +4 / - 2 ✓ Closing fragment
09-20 11:48 10m - / 0 CR7BRV -2 / - 2 ✓ Closing fragment
09-18 14:17 40m - / - UA4FKT -4 / - 2 Partial capture
09-18 14:12 40m -6 / -10 3Z100PKP -4 / -4 5 ✓ Full exchange observed
09-18 14:11 40m -4 / +6 SP100PKP -5 / -1 3 Partial capture
09-17 18:00 80m +1 / - EH3ST - / -9 7 Partial capture
09-17 17:58 80m -15 / +2 3Z100PKP -1 / -3 2 Partial capture
09-15 19:32 80m - / - RR73; +16 / - 2 Partial capture
09-11 18:18 80m 0 / - HF100PKP - / +2 2 Partial capture
09-06 10:54 40m -6 / - SQ100PKP - / -1 2 Partial capture
09-05 12:25 40m -14 / -8 PD0IFI -9 / -1 5 ✓ Full exchange observed
09-05 12:22 40m -8 / - SQ8V -6 / -1 3 ✓ Closing observed
09-04 19:10 80m +13 / - 3Z100PKP - / -1 3 Partial capture
09-04 19:07 80m +11 / - DB100FT - / -1 2 Partial capture
08-05 17:27 40m - / - DL7ARV -13 / - 3 ✓ Closing fragment
08-02 19:14 20m - / -3 M6FPW -20 / - 2 ✓ Closing fragment
07-16 21:01 80m +3 / 0 YL3NU -5 / -2 9 ✓ Full exchange observed
07-16 21:01 80m - / - UA4FKT +8 / - 2 Partial capture
07-16 20:59 80m +7 / -18 <...> +6 / -7 2 Partial capture
07-16 20:26 40m -16 / -2 OL900JAR -10 / -5 4 Partial capture
07-09 19:24 40m -13 / +6 E77D +9 / - 2 ✓ Closing observed
07-05 19:31 40m - / +1 OH5WWA -8 / - 2 ✓ Closing fragment
07-05 12:49 10m - / -14 II9WWA -20 / - 2 Partial capture
07-05 11:37 10m - / 0 F1SYH -19 / - 4 ✓ Closing fragment
07-03 10:32 40m - / -8 DA0WWA -20 / - 2 ✓ Closing fragment
07-02 19:38 40m -10 / - LA1WWA -12 / -8 4 ✓ Closing observed
07-02 19:36 40m -13 / +3 TM8WWA -22 / -20 4 ✓ Full exchange observed
07-02 19:32 40m -17 / - IU8RFW - / -17 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
141115  -5 1432  SP100PKP SP7SLO -01
141130  -5 1432  SP7SLO SP100PKP R+06
141200  -7 1432  SP7SLO RR73; IK7QMJ <...> -04
141215  -3 1432  SP100PKP SP7SLO +01
141230  -4 1302  SP7SLO 3Z100PKP R-10
141300 -13 2244  SP7SLO RC9WC -12
141300  -5 1302  <SP7SLO> 3Z100PKP RR73
141315  -4 1599  F4FSY SP7SLO R-07
141415  -6 1599  3Z100PKP SP7SLO -04 (x3)
141730  -6 1598  SP7SLO UA4FKT LO23 (x2)
191715  +5  694  SP7SLO HB9ELE R-01 (x2)
10m 
UTC    dB Audio  Message
113730 -23 1949  SP7SLO F1SYH JN25 (x4)
123630 -17 1106  SP7SLO II6WWA R-25
124945 -21 2058  SP7SLO II9WWA R-14 (x2)
192700  -7 1367  SP7SLO M0VUE 73
114845  -3  764  SP7SLO CR7BRV R+00 (x2)
80m 
UTC    dB Audio  Message
193115  -1 1644  PH82LIB SP7SLO -08
193130  +2 1415  SP7SLO 3Z100PKP R-02
193200  +9 1415  SP7SLO RR73; SQ5ABW <...> +00
193215  -3 1644  II6IGTO SP7SLO +03
193230 +22 2453  SP7SLO SP100PKP R+00
193300 +24 2453  SP7SLO RR73; PF1B <...> -14
175815 -15 1564  3Z100PKP SP7SLO -03
175830  -1 1029  SP7SLO 3Z100PKP R+02
180015  -1 1564  EH3ST SP7SLO -09 (x7)
20m 
UTC    dB Audio  Message
191900 +14  477  SP7SLO TM40TFR R-02
180430 -12 1564  SP7SLO JY5CG R-12
191445 -20 1454  SP7SLO M6FPW R-03 (x2)
191930 -15  275  SP7SLO G6PWS R-04

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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