SP5DJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO02

Receiver-side FT8 activity involving SP5DJ, decoded by SO8OO in southeastern Poland. 372 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-08-29.

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 372 FT8 messages attributed to SP5DJ as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (93%), followed by 40 m (7%) and 20 m (0%). Several six-hour UTC windows tied for the largest share (97%), 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 +5 dB.

Overview

372
Messages attributed
4
UTC dates decoded
23
Active 15-min windows
+5 dB
Estimated median S/N

Bands

80m · 346 40m · 25 20m · 1
First attributed message: 2026-06-12
Last attributed message: 2026-08-29 14:13 UTC

Observed FT8 message patterns

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

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 25, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 342.

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 SP5DJ 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 SP5DJ

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
KO02 · 231 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
290 km (approx.)
Last such locator decoded
2026-08-29 14:13 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 UTCBandSP5DJ S/NCounterpartCounterpart S/NMsgsCapture
08-29 17:10 40m - / -4 DL1KEA -14 / - 3 ✓ Closing fragment
08-29 17:08 40m - / - DP6K +5 / - 3 ✓ Closing fragment
08-29 17:05 40m - / -9 9A3AUH +9 / - 4 ✓ Closing fragment
08-29 14:09 40m -22 / -10 OE1AVO -6 / 0 5 ✓ Full exchange observed
08-29 14:08 40m - / -13 DL4JTH -4 / - 3 ✓ Closing fragment
08-29 10:05 20m - / -8 DK6WS -16 / - 3 ✓ Closing fragment
08-29 06:59 20m - / +7 DL6AZ -13 / - 3 Partial capture
08-29 06:47 20m - / -6 F1PBZ +10 / - 2 ✓ Closing fragment
08-29 06:43 20m - / -4 PD0PWH -16 / - 2 Partial capture
08-29 05:43 40m - / -11 IK2SAR +2 / - 2 ✓ Closing fragment
08-28 14:22 20m - / +5 CT1BFP -5 / - 5 ✓ Closing fragment
08-22 04:41 20m - / -9 IU3WNU -3 / - 2 ✓ Closing fragment
08-22 04:38 20m - / 0 IZ6BYS +12 / - 7 ✓ Closing fragment
08-22 04:09 20m - / -14 PD3LKN -13 / - 3 ✓ Closing fragment
08-22 03:58 20m - / -13 F1IQH -14 / - 3 ✓ Closing fragment
08-22 03:58 20m - / - PD3LKN -14 / - 2 Partial capture
07-18 05:40 20m - / - DL1R -7 / - 3 Partial capture
07-12 05:01 20m - / -8 RK6AAC -11 / - 4 ✓ Closing fragment
07-12 04:33 40m - / -13 IK4LZH -2 / - 3 ✓ Closing fragment
07-11 09:06 20m - / -8 E70SZ -15 / - 4 ✓ Closing fragment
07-11 05:43 20m - / +1 F1APY -16 / - 4 ✓ Closing fragment
07-11 05:37 20m - / -9 RU5A -9 / - 3 Partial capture
07-10 21:13 80m +11 / - M3LNN -19 / -12 2 Partial capture
07-10 21:12 80m - / - SP4WJ +15 / - 5 Partial capture
07-10 21:11 80m +10 / -11 UR3QCB -4 / -1 5 ✓ Full exchange observed
07-10 21:07 80m +10 / +2 SP9MOC +9 / - 7 Partial capture
07-10 21:07 80m +11 / +6 OH2BVT +7 / +10 7 ✓ Full exchange observed
07-10 21:03 80m +12 / - DJ3HW - / - 3 Partial capture
07-10 21:01 80m +8 / - DO9MH - / -15 3 ✓ Closing fragment
07-10 20:57 80m +10 / -5 SQ8NVB +8 / +8 5 ✓ Full exchange observed
07-10 20:56 80m +4 / -15 DL9PN -6 / - 4 ✓ Closing observed
07-10 20:53 80m +8 / -1 OK2VCR +9 / - 6 ✓ Full exchange observed
07-10 20:51 80m - / - SP4WJ +13 / - 32 Partial capture
07-10 20:47 80m +10 / -10 HG4GFP +8 / +7 5 ✓ Full exchange observed
07-10 20:33 80m +2 / 0 DO7FJK -12 / -9 5 ✓ Full exchange observed
07-10 20:32 80m +6 / - SP5JET -7 / +7 5 ✓ Full exchange observed
07-10 20:30 80m +8 / 0 EU6A +12 / - 3 ✓ Closing observed
07-10 20:27 80m +4 / - ON6CQ - / -6 2 ✓ Closing fragment
07-10 20:26 80m +2 / - DO4HHK - / -18 2 ✓ Closing fragment
07-10 20:22 80m +8 / -7 DD7EE 0 / +8 6 ✓ Full exchange observed
07-10 20:21 80m +7 / -10 G7RHF -22 / -5 5 ✓ Full exchange observed
07-10 20:18 80m +5 / -12 DK9MLA +2 / - 4 ✓ Full exchange observed
07-10 20:16 80m +6 / +1 SQ8AZT +10 / - 5 ✓ Full exchange observed
07-10 20:14 80m +8 / - UR4LG -12 / -5 3 ✓ Closing observed
07-10 20:12 80m +4 / 0 DA6JN +2 / +5 4 ✓ Full exchange observed
07-10 20:12 80m +10 / +3 SP1EXD -6 / +9 7 ✓ Full exchange observed
07-10 20:07 80m +5 / -9 UR5NPF +10 / - 3 ✓ Closing observed
07-10 20:05 80m +7 / -14 RA6ZD -4 / - 3 ✓ Closing observed
07-10 20:01 80m - / +6 LZ01MIKU +2 / - 2 Partial capture
07-10 20:00 80m -6 / -15 RN6MA -10 / 0 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
141145 -21 1817  CQ SP5DJ KO02 (x4)
141400 -10 1816  SP5DJ UA3GDJ KO92
170500  +9 2504  SP5DJ 9A3AUH JN75 (x4)
170830  +4 1025  SP5DJ DP6K JO50 (x3)
171030 -18 1621  SP5DJ DL1KEA JO30 (x3)
20m 
UTC    dB Audio  Message
142400  -7 1617  SP5DJ CT1BFP R+05 (x2)
142900  +2 1214  SP5DJ M8JYD IO81
142930 -12 2712  SP5DJ IW5ALZ JN53
064330 -16 1982  SP5DJ PD0PWH JO21 (x2)
064730 +13 2777  SP5DJ F1PBZ -06 (x2)
065230  -9 1805  SP5DJ UR3QKC R-24
065930 -10 1982  SP5DJ DL6AZ JO42 (x3)
100500 -17 1068  SP5DJ DK6WS -08 (x3)
80m 
UTC    dB Audio  Message
211030  +8 1135  CQ SP5DJ KO02                         a1 (x3)
211145  -3 1134  SP5DJ UR3QCB KN77
211200  +8 1136  UR3QCB SP5DJ -01
211215  -2 1137  SP5DJ UR3QCB R-11
211230 +12 1136  UR3QCB SP5DJ RR73
211245  -6 1134  SP5DJ UR3QCB 73
211245 +20 2893  SP5DJ SP4WJ KO03 (x2)
211315 -19 1135  SP5DJ M3LNN IO83
211345 +15 2893  SP5DJ SP4WJ KO03
211400 +11 1135  M3LNN SP5DJ -12
211415  +7 2893  SP5DJ SP4WJ KO03 (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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