SP7DSO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO91

Receiver-side FT8 activity involving SP7DSO, decoded by SO8OO in southeastern Poland. 150 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-07-24.

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 150 FT8 messages attributed to SP7DSO as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (51%), followed by 80 m (29%) and 20 m (20%). Most decodes (97%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -5 dB.

Overview

150
Messages attributed
5
UTC dates decoded
22
Active 15-min windows
-5 dB
Estimated median S/N

Bands

80m · 43 40m · 77 20m · 30
First attributed message: 2026-06-08
Last attributed message: 2026-07-24 19:19 UTC

Observed FT8 message patterns

Attributed sample
150 messages
Active dates
5 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-15 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 28, strong (≥ -8 dB) 109.

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 SP7DSO 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 SP7DSO

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 · 116 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
262 km (approx.)
Last such locator decoded
2026-07-24 19:19 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 UTCBandSP7DSO S/NCounterpartCounterpart S/NMsgsCapture
07-24 21:47 20m - / +2 DB5HA -15 / - 5 Partial capture
07-24 21:42 20m - / -7 DL1FLW -11 / - 3 ✓ Closing fragment
07-24 21:39 20m - / -2 9A4ZM 0 / - 3 ✓ Closing fragment
07-24 21:31 40m - / -10 SV2JAO -17 / - 2 ✓ Closing fragment
07-24 20:42 10m - / -1 PD1HPB -14 / - 3 ✓ Closing fragment
07-24 19:15 20m -8 / +1 SP6AXW +5 / -9 12 Partial capture
07-24 19:15 20m -12 / -2 DL9KM -9 / -12 5 ✓ Full exchange observed
07-24 19:12 20m -4 / - LY2HM - / - 2 Partial capture
07-24 19:03 20m -4 / - SM5URS -15 / -4 6 ✓ Closing observed
07-24 19:02 20m -8 / -14 LX1RFJ -20 / - 3 Partial capture
07-24 18:59 20m -8 / - LY2HM - / - 4 Partial capture
07-24 18:57 20m -9 / -17 PD0DEX -17 / -11 13 ✓ Full exchange observed
07-24 18:55 20m -2 / - BI1TX - / - 3 Partial capture
07-24 18:38 20m - / -14 RY7G +4 / - 3 ✓ Closing fragment
07-24 18:26 40m -11 / - SQ9SET - / -11 7 ✓ Closing fragment
07-24 18:25 40m -15 / - VJ6X - / - 3 Partial capture
07-24 18:23 40m -17 / - RA8AF - / - 2 Partial capture
07-24 18:22 40m -17 / - R3TIT - / -13 2 Partial capture
07-23 22:35 80m -20 / -19 IQ4JO +7 / -12 5 ✓ Full exchange observed
07-23 22:32 80m -6 / - DH1KJ - / - 4 Partial capture
07-23 21:06 80m -5 / -9 OH5KNL -2 / -3 3 ✓ Full exchange observed
07-23 20:56 40m - / -9 M0MLS -16 / - 2 ✓ Closing fragment
07-23 20:51 80m +2 / - 9A9N - / - 3 Partial capture
07-23 20:49 40m - / -7 RA3TVW -14 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
191945  +0 2323  SP7DSO SP6AXW R+01
213700  -9 2299  SP7DSO DL1FLW JO61
213900  +0 2295  SP7DSO 9A4ZM JN86 (x3)
214200  -7 2299  SP7DSO DL1FLW JO61 (x3)
214715 -13 2299  SP7DSO DB5HA JO31 (x5)
215745 -13  965  SP7DSO PW8BR -05
220845 -20 2299  SP7DSO YL3RK RR73
40m 
UTC    dB Audio  Message
182230 -17 1960  R3TIT SP7DSO R-13
182330 -17 1960  RA8AF SP7DSO JO91 (x2)
182500 -20 1959  VJ6X SP7DSO JO91 (x3)
182630  -9 1960  SQ9SET SP7DSO JO91 (x7)
213130 -15 1878  SP7DSO SV2JAO -10 (x2)
10m 
UTC    dB Audio  Message
204215 -16 2105  SP7DSO PD1HPB JO22 (x3)
204845 -17 1024  SP7DSO PD0IFI JO32
80m 
UTC    dB Audio  Message
205145  +2 1132  9A9N SP7DSO JO91 (x2)
210615  +0 1589  SP7DSO OH5KNL -09
210630  -5 1132  OH5KNL SP7DSO R-03
210645  -5 1589  SP7DSO OH5KNL RR73
222930  -9 1805  SQ5N SP7DSO JO91
223215  +5 1805  DH1KJ SP7DSO JO91 (x4)
223530  +7 2153  SP7DSO IQ4JO JN63
223545 -17 1926  IQ4JO SP7DSO -12
223600  +4 2153  SP7DSO IQ4JO R-19
223615 -23 1928  IQ4JO SP7DSO RR73
223630 +11 2153  SP7DSO IQ4JO 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.

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