SP3DT — 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: JO81

Receiver-side FT8 activity involving SP3DT, decoded by SO8OO in southeastern Poland. 258 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, across 20 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-10-18.

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 258 FT8 messages attributed to SP3DT as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (86%), followed by 20 m (13%) and 60 m (0%). Most decodes (76%) fell within the six-hour window 06:00-12:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

258
Messages attributed
20
UTC dates decoded
46
Active 15-min windows
-10 dB
Estimated median S/N

Bands

60m · 1 40m · 223 20m · 34
First attributed message: 2026-08-23
Last attributed message: 2026-10-18 13:27 UTC

Observed FT8 message patterns

Attributed sample
258 messages
Active dates
20 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-17 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 50, moderate (-15 to -9 dB) 121, strong (≥ -8 dB) 87.

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 SP3DT 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 SP3DT

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
JO81 · 175 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
379 km (approx.)
Last such locator decoded
2026-10-18 13:26 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 UTCBandSP3DT S/NCounterpartCounterpart S/NMsgsCapture
10-18 13:28 40m - / - R2AL -6 / - 4 Partial capture
10-18 13:26 40m -14 / -5 HB9HJI -18 / -13 5 ✓ Full exchange observed
10-18 13:15 40m -18 / - HB9HJI - / - 2 Partial capture
10-11 11:46 40m -16 / -5 DL4DBM -11 / - 3 ✓ Closing observed
10-06 09:10 40m -12 / - ON4UP/P - / -17 2 Partial capture
09-30 14:26 40m - / -5 SN100PKP -14 / - 2 Partial capture
09-22 13:00 40m -8 / +8 SQ8DIO -6 / -10 5 ✓ Full exchange observed
09-19 11:03 40m -16 / -9 HF100PKP -15 / -9 3 Partial capture
09-19 10:49 40m -9 / - G6DXY - / - 7 Partial capture
09-19 09:53 40m -11 / - IK0XBU/P - / - 2 Partial capture
09-19 09:50 40m -6 / - SQ2ODE - / -18 3 Partial capture
09-19 09:41 40m -6 / - SQ2ODE - / - 3 Partial capture
09-18 09:58 40m -15 / -18 3Z100PKP -11 / -14 4 Partial capture
09-18 09:55 40m -12 / 0 SQ9SET -10 / -10 6 ✓ Full exchange observed
09-18 09:53 40m -15 / -1 OK3BR -6 / -7 5 ✓ Full exchange observed
09-16 11:07 40m -21 / - IU2SOK - / - 2 Partial capture
09-16 09:22 40m -13 / +4 SQ9SZ -8 / - 17 Partial capture
09-15 14:21 40m -18 / - ON3MOH/P - / -15 4 ✓ Closing fragment
09-15 13:49 40m - / +2 SQ9SZ -10 / - 6 Partial capture
09-15 13:23 40m -6 / - M7HVG - / - 4 Partial capture
09-15 13:12 40m -4 / - M7HVG - / - 11 Partial capture
09-15 13:10 40m -6 / - OE3FVU -8 / -6 4 ✓ Closing observed
09-15 13:09 40m -4 / - DL8LRZ - / -6 3 ✓ Closing fragment
09-15 08:32 40m - / - DJ0MAB -19 / - 3 Partial capture
09-15 08:28 40m -17 / +2 DL7ACA -8 / 0 11 ✓ Full exchange observed
09-15 08:22 40m -14 / - F1LPT/P - / -15 16 Partial capture
09-15 08:15 40m -12 / - IU4SQE - / - 10 Partial capture
09-15 08:11 40m -19 / - HB9ITZ - / - 6 Partial capture
09-15 06:01 40m - / 0 F4GYM/P -4 / - 2 ✓ Closing fragment
09-14 15:10 40m -6 / +3 PA2RO -6 / -8 4 ✓ Full exchange observed
09-14 15:06 40m -4 / - IZ8PPI - / -19 6 Partial capture
09-14 15:00 40m -6 / - DG4BBK - / -8 10 Partial capture
09-14 09:18 40m -14 / - IU4SQE - / - 3 Partial capture
09-14 09:16 40m -10 / -3 UT4PA +6 / -6 6 ✓ Full exchange observed
09-14 09:15 40m -9 / -3 HA7TM +8 / +7 5 ✓ Full exchange observed
09-13 09:47 40m -8 / - IU4SQE - / - 3 Partial capture
09-13 07:31 40m -19 / - SQ100PKP - / -6 3 Partial capture
09-13 07:30 40m -17 / -12 F4MOJ/P +1 / -10 4 Partial capture
09-13 07:27 40m -12 / - HB9ITZ - / - 4 Partial capture
09-12 09:38 40m -8 / - M8JJS - / - 12 Partial capture
09-12 08:46 40m -13 / - HB9ITZ - / - 8 Partial capture
09-12 07:51 40m -5 / - OM1DLC/P - / - 2 Partial capture
09-11 10:03 40m -14 / -2 DL9KM -13 / -7 5 ✓ Full exchange observed
09-11 09:59 40m - / - OK3MB -14 / - 2 Partial capture
09-11 09:58 40m -16 / -3 OZ9FF -15 / -2 5 ✓ Full exchange observed
09-11 07:23 40m -10 / - HB9ITZ - / - 11 Partial capture
09-11 07:17 40m -15 / - F1LPT/P - / -21 3 ✓ Closing fragment
09-10 09:37 40m - / - DJ0MAB -14 / - 2 Partial capture
09-10 09:32 40m - / -1 9A7BB -3 / - 3 ✓ Closing fragment
09-06 06:42 40m -11 / -4 DG3AWF -16 / -19 8 ✓ 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
091230 -14 2456  ON4UP/P SP3DT R-17
114630 -14  939  DL4DBM SP3DT JO81
114645 -11  939  SP3DT DL4DBM -05
114730 -18  939  DL4DBM SP3DT 73
131545 -22 1308  HB9HJI SP3DT JO81 (x3)
132700 -17 1308  SP3DT HB9HJI -05
132715 -10 1208  HB9HJI SP3DT R-13
132730 -19 1308  SP3DT HB9HJI RR73
132745 -14 1208  HB9HJI SP3DT 73
132800  -8 1606  SP3DT R2AL KO85 (x4)
60m 
UTC    dB Audio  Message
074245 -14 1300  SP2OSA SP3DT JO81
20m 
UTC    dB Audio  Message
103600 -10  583  F4HTA SP3DT R-06
103930 -13 2280  SP3DT M8JJS RR73
104530 -12  729  SP3DT W1AW/2 -25
120930  -8  631  SP3DT A41KB -10 (x2)
121100 -19 1930  SP3DT DL3BH JN48 (x2)
134115  -8 1510  SP3DT PE1ARS JO32
134515  -4 1502  SP3DT LA8OOA -10 (x2)
163415 -11 1538  SP3DT SV1MNE -02 (x3)
171145  -7 2424  SP3DT F4DVX/P +11 (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.

CW

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

Explore CW reception at SO8OO

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