SP1183JO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland

Receiver-side FT8 activity involving SP1183JO, decoded by SO8OO in southeastern Poland. 234 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-16 and 2026-07-29.

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 234 FT8 messages attributed to SP1183JO as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (59%), followed by 40 m (40%) and 20 m (1%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was +2 dB.

Overview

234
Messages attributed
5
UTC dates decoded
24
Active 15-min windows
+2 dB
Estimated median S/N

Bands

80m · 138 40m · 93 20m · 3
First attributed message: 2026-07-16
Last attributed message: 2026-07-29 20:04 UTC

Observed FT8 message patterns

Attributed sample
234 messages
Active dates
5 UTC dates
Estimated median S/N
+2 dB
Estimated 10th-90th percentile
-13 to +13 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 26, strong (≥ -8 dB) 192.

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 SP1183JO 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 UTCBandSP1183JO S/NCounterpartCounterpart S/NMsgsCapture
07-29 19:57 40m -7 / 0 HA7TM +6 / +3 3 Partial capture
07-29 19:57 40m -9 / - <...> +6 / - 4 ✓ Closing fragment
07-29 19:50 40m - / -13 R2AL -6 / - 3 Partial capture
07-29 19:48 40m -11 / -16 RV3X -2 / -13 4 Partial capture
07-29 19:46 40m -8 / +9 SO5A -8 / -8 2 Partial capture
07-29 19:40 40m -8 / - <...> -12 / - 11 ✓ Closing fragment
07-27 14:19 40m -2 / - SP1JQJ - / -4 2 Partial capture
07-23 21:18 80m - / -11 DO1OAS -4 / - 3 Partial capture
07-23 21:16 80m - / -9 SP6ZLT +7 / - 4 Partial capture
07-23 20:51 40m - / - <...> -12 / - 2 ✓ Closing fragment
07-23 20:33 40m - / - <...> -11 / - 2 ✓ Closing fragment
07-23 09:13 20m - / +6 DL1BGH -14 / - 3 Partial capture
07-23 09:06 20m -9 / - RW9MZ - / -14 2 Partial capture
07-21 20:45 80m +14 / - <...> -2 / - 5 ✓ Closing fragment
07-21 20:39 80m +11 / -4 SP6FME +16 / +9 3 Partial capture
07-21 20:36 80m +15 / - <...> -5 / - 5 ✓ Closing fragment
07-21 20:31 80m +19 / -6 DO1TLP 0 / -1 3 Partial capture
07-21 20:28 80m +10 / -6 F5PBG -4 / -5 3 Partial capture
07-21 20:26 80m +8 / -8 F4HAB -10 / -6 3 Partial capture
07-21 20:26 80m +7 / - SO5A +22 / +10 2 Partial capture
07-21 20:26 80m - / - SQ5ROB +10 / - 7 Partial capture
07-21 20:25 80m +12 / - <...> 0 / - 7 ✓ Closing fragment
07-21 20:22 80m +11 / - DF5RA - / 0 6 Partial capture
07-21 20:19 80m - / - SQ5ROB +11 / - 9 Partial capture
07-21 20:17 80m +8 / - <...> -18 / - 3 ✓ Closing fragment
07-21 20:14 80m +14 / -3 DO5HCS -2 / -10 2 Partial capture
07-21 20:11 80m - / -7 DO1MGN -9 / - 3 Partial capture
07-21 20:10 80m +12 / - <...> +1 / - 7 ✓ Closing fragment
07-21 20:10 80m +8 / -14 IK6GTF 0 / -5 3 Partial capture
07-21 20:05 40m -2 / - 8S7DL - / +3 4 Partial capture
07-21 20:00 40m -1 / 0 UT7NS 0 / +1 2 Partial capture
07-21 20:00 40m -5 / - OE1S -15 / -13 10 Partial capture
07-21 19:58 40m -2 / - LA1HW - / -15 2 Partial capture
07-21 19:55 40m -4 / -9 RD3TBQ -2 / -3 4 ✓ Full exchange observed
07-21 19:50 40m - / - <...> -14 / - 2 ✓ Closing fragment
07-21 19:43 40m +4 / +3 PA3BMB -9 / +3 3 Partial capture
07-21 19:37 40m -1 / -2 UA4FKT +2 / +4 3 Partial capture
07-21 19:37 40m +3 / - <...> -15 / - 4 ✓ Closing fragment
07-21 19:32 40m +1 / - HG8IT - / +4 6 Partial capture
07-21 19:23 40m - / - YO4FRF -12 / - 4 Partial capture
07-21 19:20 40m -16 / - OE6TNO - / -1 2 Partial capture
07-21 19:17 40m -14 / -8 SP7SZJ -24 / -7 2 Partial capture
07-21 19:12 40m - / -13 RA3ZH -2 / - 3 Partial capture
07-21 19:12 40m - / -9 SP6TO -20 / - 2 Partial capture
07-21 19:11 40m -16 / - <...> -13 / - 11 ✓ Closing fragment
07-21 19:09 40m - / -2 SP9UPH -1 / - 2 Partial capture
07-21 19:08 40m - / -8 I1RJP -10 / - 2 Partial capture
07-21 19:08 40m -18 / 0 DK7UY -17 / +8 3 Partial capture
07-21 19:07 40m -18 / - <...> -6 / - 2 ✓ Closing fragment
07-21 19:06 40m - / - SP9UPH 0 / - 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
195100 -11 2710  RV3X SP1183JO -13
195115  -7 1358  SP1183JO R2AL R-13
195600  -9 2708  PA3DII SP1183JO -10
195700 -10 2708  <...> SP1183JO RR73
195730  -6 2707  CQ SP1183JO
195745  +3 2708  SP1183JO HA7TM JN97
195800  -7 2707  HA7TM SP1183JO +03
195815 +10 2708  SP1183JO HA7TM R+00
195845  +6 2707  SP1183JO <...> 73
195900 -10 2707  PA3DII SP1183JO -13
195930  -9 2706  <...> SP1183JO RR73
200000  -8 2706  SP5AKI SP1183JO -08
200030  -9 2706  <...> SP1183JO RR73
200330 -10 2705  CQ SP1183JO (x2)
80m 
UTC    dB Audio  Message
204615  -6 1813  SP1183JO <...> 73
204630 +13 2696  CQ SP1183JO (x2)
204730 +14 2695  F1PBZ SP1183JO R-06
204745  +6 2754  SP1183JO <...> RR73
204830 +14 2696  <...> SP1183JO RR73
211530  -2 1466  CQ SP1183JO
211545  -3 1467  SP1183JO DO1OAS -11
211615  +5 1466  SP1183JO SP6ZLT -09 (x4)
211845  -4 1467  SP1183JO DO1OAS -11 (x3)
20m 
UTC    dB Audio  Message
111315  -8 1881  SP1183JO <...> RR73 (x2)
113215  -4 2084  SP1183JO UT5MB R-22 (x2)
113315  -6 2085  SP1183JO <...> RR73 (x3)
090600 -11 2696  CQ SP1183JO
090630  -9 2695  RW9MZ SP1183JO -14 (x2)
091315 -18 1658  <SP1183JO> RU6UR -21
091315 -19 2301  <SP1183JO> DL1BGH
091315 -13 2230  SP1183JO <...> 73
091415 -11 2301  SP1183JO DL1BGH (x2)
10m 
UTC    dB Audio  Message
121545 -17 1738  SP1183JO <...> RR73
121815 -13 1737  SP1183JO E70SZ JN84 (x2)
121915 -17 1737  SP1183JO <...> 73 (x3)

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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