SP1EXD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO73

Receiver-side FT8 activity involving SP1EXD, decoded by SO8OO in southeastern Poland. 324 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 32 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 324 FT8 messages attributed to SP1EXD as the transmitting token by decoded message structure across 32 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (56%), followed by 20 m (27%) and 80 m (17%). Most decodes (64%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.9 dB.

Overview

324
Messages attributed
32
UTC dates decoded
78
Active 15-min windows
-9.9 dB
Estimated median S/N

Bands

80m · 56 40m · 181 20m · 87
First attributed message: 2026-06-06
Last attributed message: 2026-09-20 13:22 UTC

Observed FT8 message patterns

Attributed sample
324 messages
Active dates
32 UTC dates
Estimated median S/N
-9.9 dB
Estimated 10th-90th percentile
-18 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 64, moderate (-15 to -9 dB) 113, strong (≥ -8 dB) 147.

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 SP1EXD 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 SP1EXD

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
JO73 · 163 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
613 km (approx.)
Last such locator decoded
2026-09-20 13:20 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 UTCBandSP1EXD S/NCounterpartCounterpart S/NMsgsCapture
09-20 13:19 40m -11 / - SQ8V -18 / - 5 ✓ Closing observed
08-28 14:47 40m -8 / - IK1MJK/P - / - 3 Partial capture
08-28 14:39 40m -8 / - GM3DRA - / -4 5 ✓ Closing fragment
08-27 15:06 40m -6 / -7 S57TW +8 / - 5 ✓ Full exchange observed
08-27 14:54 40m -6 / - HB9SFL - / - 3 Partial capture
08-25 13:44 40m -13 / 0 OZ9FF -12 / - 5 ✓ Full exchange observed
08-25 13:40 40m -10 / - M7FHO - / -7 5 ✓ Closing fragment
08-20 15:32 20m - / -2 UA4FEN -2 / - 2 Partial capture
08-20 15:31 20m -2 / -10 ZA5G -19 / - 3 ✓ Closing observed
08-20 15:14 40m -11 / -12 HA3GO -4 / +2 5 ✓ Full exchange observed
08-20 15:07 40m -13 / - DB3MAX - / - 2 ✓ Closing fragment
08-20 15:04 40m -14 / -16 DJ2MS -13 / +2 8 ✓ Full exchange observed
08-01 17:04 40m -17 / - ES4TIX - / +5 4 ✓ Closing fragment
08-01 17:01 40m -20 / - G6OCE - / -8 3 ✓ Closing fragment
07-30 17:54 40m -13 / - LZ1DIO - / - 2 Partial capture
07-30 17:12 40m -16 / - SV9QWC - / - 2 Partial capture
07-30 17:07 40m -15 / - SQ8DIO - / -3 2 Partial capture
07-30 17:05 40m -16 / - SM7JKW - / -13 2 ✓ Closing fragment
07-30 17:01 40m -16 / - M8NAQ - / - 3 ✓ Closing fragment
07-29 17:16 40m - / +3 SQ2HDO -12 / - 2 ✓ Closing fragment
07-28 11:16 20m - / -9 GJ0KYZ -4 / - 5 Partial capture
07-17 10:32 20m -11 / - CT2HUU - / - 2 Partial capture
07-15 17:04 40m -13 / - ON4CHK - / -8 2 Partial capture
07-15 06:45 40m -18 / - HA3GX - / +6 2 ✓ Closing fragment
07-15 06:43 40m -18 / - SV2FNT - / - 2 Partial capture
07-13 19:55 80m - / -4 <...> +1 / - 2 Partial capture
07-13 19:54 80m -5 / - HF100LKK - / - 2 Partial capture
07-13 19:48 80m -6 / - G7RHF - / -14 3 ✓ Closing fragment
07-13 19:46 80m -14 / -11 UA4FKT +5 / -3 6 ✓ Full exchange observed
07-13 19:44 80m -10 / - DH8KAM - / -9 3 ✓ Closing fragment
07-13 19:36 80m -5 / -9 9A1BTU +5 / - 5 ✓ Closing observed
07-13 06:23 20m -8 / - F4JSZ - / -10 3 Partial capture
07-13 06:21 20m -8 / - <...> - / - 2 Partial capture
07-12 21:00 40m -14 / - EA4CCX - / -14 3 ✓ Closing fragment
07-12 20:41 20m -9 / - K3ZK - / - 3 Partial capture
07-12 20:37 20m -9 / - SV1DEG - / -14 4 Partial capture
07-12 20:33 20m -9 / - TF8KW - / - 2 Partial capture
07-12 20:28 20m -12 / - YH1AA - / -13 7 ✓ Closing fragment
07-12 08:00 20m - / - R2AL -10 / - 3 Partial capture
07-12 07:58 20m -15 / - TA1BX - / - 2 ✓ Closing fragment
07-12 07:57 40m - / - DM5KK -12 / - 2 Partial capture
07-12 07:51 40m - / - DM5KK -12 / - 3 Partial capture
07-10 20:22 40m -13 / -7 SP5ROM -12 / 0 4 ✓ Full exchange observed
07-10 20:18 40m -12 / - EA1FE - / - 3 Partial capture
07-10 20:16 80m - / - UA4FKT +10 / - 3 Partial capture
07-10 20:15 80m 0 / -4 SP2SCB -18 / -12 5 ✓ Full exchange observed
07-10 20:12 80m - / - DL7APK -8 / - 10 Partial capture
07-10 20:12 80m -6 / +9 SP5DJ +10 / +3 7 ✓ Full exchange observed
07-10 20:08 80m -4 / -1 DJ3HW +3 / +2 3 Partial capture
07-08 16:13 20m -6 / - YO9PH - / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
143930  -6 1697  GM3DRA SP1EXD JO73 (x4)
144730  -3 1697  IK1MJK/P SP1EXD JO73 (x2)
144815 -10 1124  SP1EXD 3Z100LKK +09
144830 -12 1697  IK1MJK/P SP1EXD R+12
145330  -4 1697  EI2FS SP1EXD JO73 (x2)
131945  -8 1739  SQ8V SP1EXD JO73 (x3)
132200 -18 1902  SP1EXD SQ8V RR73
132215 -15 1739  SQ8V SP1EXD 73
80m 
UTC    dB Audio  Message
194630  +9 1063  SP1EXD UA4FKT LO23
194645 -16 1064  UA4FKT SP1EXD -03
194700  +2 1063  SP1EXD UA4FKT R-11
194715 -13 1063  UA4FKT SP1EXD RR73
194730  +2 1063  SP1EXD UA4FKT 73
194815  -8 1064  G7RHF SP1EXD JO73 (x3)
195115 -12 1064  DO9KB SP1EXD JO73
195415  -3 1064  <HF100LKK> SP1EXD JO73 (x2)
195530  +0 2324  SP1EXD <...> -04 (x2)
195845  -7 1124  OM3TFP SP1EXD JO73
190530  +4 1141  5Z4VJ SP1EXD JO73
20m 
UTC    dB Audio  Message
103230  -9 1277  CT2HUU SP1EXD JO73 (x2)
072215  -4 1330  KD9DCW SP1EXD JO73
111630  -7  888  SP1EXD GJ0KYZ -09 (x5)
095630 -10 1220  DH3KR SP1EXD JO73
100100 -16 1220  N4YSA SP1EXD JO73
153100  -6 1628  ZA5G SP1EXD JO73
153115 -19  820  SP1EXD ZA5G -10
153200  +1 1628  ZA5G SP1EXD 73
153215  -4 1628  SP1EXD UA4FEN -02 (x2)
10m 
UTC    dB Audio  Message
094900  -7 1433  SP1EXD IQ6PE -01 (x2)

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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