SP7UPL — 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: JO91

Receiver-side FT8 activity involving SP7UPL, decoded by SO8OO in southeastern Poland. 83 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-11-03.

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 83 FT8 messages attributed to SP7UPL 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 (65%), followed by 40 m (19%) and 20 m (16%). Several six-hour UTC windows tied for the largest share (98%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (92%); the estimated median was +15 dB.

Overview

83
Messages attributed
5
UTC dates decoded
11
Active 15-min windows
+15 dB
Estimated median S/N

Bands

80m · 54 40m · 16 20m · 13
First attributed message: 2026-06-13
Last attributed message: 2026-11-03 19:04 UTC

Observed FT8 message patterns

Attributed sample
83 messages
Active dates
5 UTC dates
Estimated median S/N
+15 dB
Estimated 10th-90th percentile
-7 to +23 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 76.

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 SP7UPL in decoded directed-looking exchanges:

Most frequent locator attributed to SP7UPL

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
JO91 · 20 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
262 km (approx.)
Last such locator decoded
2026-11-03 19:03 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 UTCBandSP7UPL S/NCounterpartCounterpart S/NMsgsCapture
11-03 19:04 80m - / - DL6UM -4 / - 4 Partial capture
11-03 19:03 80m +6 / +3 OE5ABL +7 / +9 3 Partial capture
11-03 19:02 80m - / - PE1NPS -19 / - 2 Partial capture
11-03 19:01 80m +16 / +10 YU7AS +4 / +8 4 ✓ Full exchange observed
11-03 18:58 80m - / - DO9SAM +16 / - 3 Partial capture
11-03 18:56 80m +19 / -14 R1AV 0 / -2 4 ✓ Full exchange observed
11-03 18:54 80m +12 / +8 YO3FWL -1 / - 3 ✓ Full exchange observed
11-03 18:54 80m +16 / - DD8VX -17 / -7 6 ✓ Closing observed
11-03 18:51 80m +9 / - SP1EG - / - 2 ✓ Closing fragment
11-03 18:51 80m +14 / - SP1RKT +4 / - 5 ✓ Full exchange observed
11-03 18:50 80m +16 / - EA1IOK - / -8 2 ✓ Closing fragment
11-03 18:48 80m +20 / - EX7DY - / -10 3 ✓ Closing fragment
11-03 18:44 80m +19 / -9 R9FAI -12 / -7 7 ✓ Full exchange observed
11-03 18:44 80m +28 / - SP5DFK/QRP +2 / -9 2 Partial capture
11-03 18:44 80m +26 / - UX7QV +4 / - 4 ✓ Closing observed
11-03 17:30 40m - / -4 DL8YBL -15 / - 2 Partial capture
11-03 17:25 40m - / - IU5HIU -11 / - 2 Partial capture
11-03 17:25 40m - / +8 HB9SFL -6 / - 3 ✓ Closing fragment
09-29 04:19 40m - / - F6FDY -8 / - 3 Partial capture
08-29 20:17 80m +21 / - UN8DSW - / -8 4 ✓ Closing fragment
08-29 20:13 80m +24 / -5 EA6LU -12 / -6 5 ✓ Full exchange observed
08-29 20:11 80m +23 / - RK9DO - / -5 3 ✓ Closing fragment
08-29 20:09 80m +17 / - 7A5ZMN - / - 2 Partial capture
08-29 20:08 80m +20 / -2 LZ2VQ +4 / +2 4 ✓ Full exchange observed
08-29 20:07 80m +20 / - 9A4ZM +8 / - 5 ✓ Full exchange observed
08-29 20:06 80m +18 / - UA4FKT +12 / - 4 ✓ Full exchange observed
08-29 20:05 80m +16 / +4 DL5PC +3 / +3 4 ✓ Full exchange observed
08-08 18:36 20m - / -10 IK4LZH -4 / - 4 Partial capture
08-08 18:36 20m - / - IQ4JO -8 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
190045 +10  402  OK1FKY SP7UPL JO91
190130 +18  402  YU7AS SP7UPL JO91
190145  +4 1664  SP7UPL YU7AS +10
190200 +14  402  YU7AS SP7UPL R+08 (x2)
190245 -21 2478  SP7UPL PE1NPS JO22
190300 +17  401  CQ SP7UPL JO91
190315  +7  403  SP7UPL OE5ABL +03
190330  +6  402  OE5ABL SP7UPL R+09
190345 -17 2478  SP7UPL PE1NPS JO22
190400  +7  402  OE5ABL SP7UPL R+09
190445 -11  793  SP7UPL DL6UM JO60 (x4)
40m 
UTC    dB Audio  Message
041200 -17  440  US2YW SP7UPL RR73
041845 -18 1766  SP7UPL SV8NAJ RR73
041915  -3 1069  SP7UPL F6FDY JN33
041945  -6  990  SP7UPL UB3DQR KO85
041945 -12 1069  SP7UPL F6FDY JN33 (x2)
042200 -14  439  TA3XEE SP7UPL RR73
172515  -7 2346  SP7UPL HB9SFL +08
172545  -2 2338  SP7UPL OE9HGV RR73
172545 -13 2701  SP7UPL IU5HIU JN53
172545  -4 2346  SP7UPL HB9SFL +08
172615  -9 2701  SP7UPL IU5HIU JN53
172645  -6 2346  SP7UPL HB9SFL RR73
173015 -19 1162  SP7UPL DL8YBL JO31 (x2)
20m 
UTC    dB Audio  Message
183615  -5 2656  SP7UPL IQ4JO JN63
183615  -4  462  SP7UPL IK4LZH JN54
183645 -10 2655  SP7UPL IQ4JO JN63
183645  -9  462  SP7UPL IK4LZH R-10 (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.

CW

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

Explore CW reception at SO8OO

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