SP/DO7JVK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland

Receiver-side FT8 activity involving SP/DO7JVK, decoded by SO8OO in southeastern Poland. 226 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-10 and 2026-09-17.

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 226 FT8 messages attributed to SP/DO7JVK as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (80%), followed by 80 m (20%). Most decodes (77%) fell within the six-hour window 05:00-11:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

226
Messages attributed
4
UTC dates decoded
21
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 46 40m · 180
First attributed message: 2026-09-10
Last attributed message: 2026-09-17 01:36 UTC

Observed FT8 message patterns

Attributed sample
226 messages
Active dates
4 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-16 to +10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 25, moderate (-15 to -9 dB) 123, strong (≥ -8 dB) 78.

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 SP/DO7JVK 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 UTCBandSP/DO7JVK S/NCounterpartCounterpart S/NMsgsCapture
09-17 10:13 40m - / +10 SQ5ABW -7 / - 2 Partial capture
09-17 10:08 40m - / 0 SQ5ABW -4 / - 2 Partial capture
09-17 08:48 40m - / -2 SQ5WN -16 / - 3 Partial capture
09-17 08:47 40m - / - OK2OM +7 / - 3 Partial capture
09-17 06:06 40m - / -22 DL6UM -5 / - 9 Partial capture
09-17 05:32 40m - / - DL2AND -7 / - 4 Partial capture
09-17 05:32 40m - / -4 LY3AB -7 / - 4 Partial capture
09-17 05:10 40m - / - DL2AND +4 / - 10 Partial capture
09-17 01:35 40m -14 / - HZ96ND - / - 2 ✓ Closing fragment
09-17 01:34 40m - / -14 UB4CJS -13 / - 3 Partial capture
09-16 23:06 40m - / - YB5QZ -10 / - 4 Partial capture
09-16 22:23 40m - / - DJ0MAB -16 / - 2 Partial capture
09-16 21:12 40m - / -1 EA1FJV -14 / - 2 Partial capture
09-16 15:55 40m - / - YO2LGK -5 / - 3 Partial capture
09-16 15:08 40m - / -8 DL2RTU +1 / - 2 Partial capture
09-16 14:57 40m - / -7 UR5TOK +3 / - 10 Partial capture
09-16 14:20 40m - / -5 UR5TOC +4 / - 2 Partial capture
09-16 13:53 40m - / +7 DL2AND +2 / - 2 Partial capture
09-16 13:49 40m - / - DL2AND +2 / - 2 Partial capture
09-16 13:27 40m - / - DL2AND +2 / - 6 Partial capture
09-16 12:15 40m - / +4 IK4LDS -15 / - 2 Partial capture
09-16 12:12 40m - / - DL2AND -9 / - 6 Partial capture
09-16 10:23 40m -9 / - <...> -2 / - 3 ✓ Closing fragment
09-16 10:15 40m - / - US1MM +1 / - 6 Partial capture
09-16 10:15 40m -10 / - <...> -4 / - 3 ✓ Closing fragment
09-16 10:06 40m -13 / - F3CJ - / -13 7 Partial capture
09-16 09:54 40m -12 / - M8FQT - / -18 21 Partial capture
09-16 09:51 40m -10 / - <...> -4 / - 3 ✓ Closing fragment
09-16 09:48 40m -15 / - <...> -15 / - 3 ✓ Closing fragment
09-16 09:48 40m -16 / +2 DL6KVB -15 / -4 2 Partial capture
09-16 09:42 40m -12 / - <...> - / - 6 Partial capture
09-16 09:38 40m -6 / -9 OE5ABL -16 / -24 2 Partial capture
09-16 09:37 40m -6 / - <...> -19 / - 3 ✓ Closing fragment
09-16 09:31 40m -12 / - <...> - / - 4 ✓ Closing fragment
09-16 09:28 40m -9 / - <...> - / - 2 ✓ Closing fragment
09-16 09:24 40m -8 / - <...> +5 / - 5 ✓ Closing fragment
09-16 09:19 40m -14 / - DL3IAK - / -17 2 Partial capture
09-16 09:16 40m -6 / - <...> - / - 2 ✓ Closing fragment
09-16 09:15 40m -5 / - DJ0MAB -19 / -1 2 Partial capture
09-16 09:06 40m - / -9 UX7QV 0 / - 2 Partial capture
09-16 09:04 40m -10 / - <...> -11 / - 10 ✓ Closing fragment
09-16 09:00 40m -9 / - SQ6PZL - / +4 7 Partial capture
09-16 08:58 40m -12 / - F1IQH - / -18 2 Partial capture
09-16 08:57 40m -12 / - <...> +9 / - 5 ✓ Closing fragment
09-16 08:56 40m -13 / - SP5EXA +8 / - 3 Partial capture
09-11 14:46 40m - / +5 IZ0CUX -15 / - 2 Partial capture
09-11 14:41 40m - / - SP9MRP +6 / - 2 Partial capture
09-11 10:31 40m - / - DL2VM +13 / - 2 Partial capture
09-11 07:09 40m - / -1 I5UOA -13 / - 6 Partial capture
09-11 06:43 40m - / -17 UX2QX -7 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
075830 -15 1749  SP/DO7JVK SA7BYQ -07
083715 -18 1150  SP/DO7JVK I6XVL JN63
084745  +7 1278  SP/DO7JVK OK2OM JN99
084800 -15 1209  SP/DO7JVK SQ5WN -02
084815  +8 1277  SP/DO7JVK OK2OM JN99 (x2)
084900 -17 1209  SP/DO7JVK SQ5WN -02 (x3)
090545  -4 1276  SP/DO7JVK 9A6T -10
092115 -12 1153  SP/DO7JVK F6BEC R-01
100845  -4  940  SP/DO7JVK SQ5ABW +00 (x4)
80m 
UTC    dB Audio  Message
172500 +15 1017  CQ SP/DO7JVK (x7)
195015 -12  961  SP/DO7JVK R5VCR R-11
203415 +11 1025  RA9SJG SP/DO7JVK -08
203615  +7 1025  RD4AI SP/DO7JVK -13
203645  +6 1025  RA9SJG SP/DO7JVK R-04
203730 +11 1025  SP/DO7JVK YO4NF -02
045000  -1 1026  SP/DO7JVK SQ5EXI -14 (x2)
145815 -13 1063  SP/DO7JVK UF3T -14

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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