SP3MJK — 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: JO82

Receiver-side FT8 activity involving SP3MJK, decoded by SO8OO in southeastern Poland. 43 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-07-27 and 2026-08-12.

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 43 FT8 messages attributed to SP3MJK as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (86%), followed by 80 m (14%). In this small sample, the estimated median decoder S/N was -16 dB; no usual signal pattern is inferred.

Overview

43
Messages attributed
2
UTC dates decoded
4
Active 15-min windows
-16 dB
Estimated median S/N

Bands

80m · 6 40m · 37
First attributed message: 2026-07-27
Last attributed message: 2026-08-12 22:26 UTC

Observed FT8 message patterns

Attributed sample
43 messages
Active dates
2 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-19 to -13 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SP3MJK in decoded directed-looking exchanges:

Most frequent locator attributed to SP3MJK

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
JO82 · 19 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
439 km (approx.)
Last such locator decoded
2026-08-12 22:26 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 UTCBandSP3MJK S/NCounterpartCounterpart S/NMsgsCapture
10-07 19:52 80m - / - PC2J -7 / - 3 Partial capture
10-07 19:35 40m - / -14 M7NFV -20 / - 5 Partial capture
10-07 19:27 40m - / -15 F6BHK -10 / - 3 ✓ Closing fragment
10-07 19:22 40m - / -12 R1BEO -2 / - 2 Partial capture
10-07 19:19 40m - / -11 F4BYA +8 / - 3 ✓ Closing fragment
10-07 19:11 40m - / -19 PA8S +1 / - 12 ✓ Closing fragment
10-07 19:06 40m - / +5 IZ4AIF +4 / - 2 ✓ Closing fragment
10-07 18:55 40m - / -19 OE9GWV -6 / - 8 ✓ Closing fragment
10-07 18:55 40m - / -21 SV1DKR -6 / - 3 ✓ Closing fragment
10-07 18:54 40m - / -9 PA3AGN -17 / - 3 Partial capture
10-07 18:49 40m - / -15 ES4TRI -4 / - 2 Partial capture
10-07 18:44 40m - / -3 PA3BMB -9 / - 2 Partial capture
10-07 18:39 40m - / -15 HG8LXL -4 / - 3 ✓ Closing fragment
08-12 22:24 80m -18 / -9 SP1MGM +10 / - 5 ✓ Full exchange observed
07-29 18:55 20m - / -5 DJ5YS -10 / - 8 Partial capture
07-29 18:46 20m - / -17 DL1R +1 / - 4 ✓ Closing fragment
07-29 17:06 20m - / +5 9A4ZM -6 / - 3 ✓ Closing fragment
07-29 16:57 20m - / -14 RZ4FWA -19 / - 2 Partial capture
07-29 14:37 20m - / - R6DV -9 / - 5 Partial capture
07-29 14:34 20m - / -17 YO9PH -10 / - 2 ✓ Closing fragment
07-29 14:31 20m - / - PE9JAN -12 / - 3 ✓ Closing fragment
07-28 20:11 20m - / -17 PD7BDN -6 / - 14 Partial capture
07-28 20:04 20m - / +1 RA6OY -3 / - 3 ✓ Closing fragment
07-28 19:49 20m - / - RA3ZDU -14 / - 2 ✓ Closing fragment
07-28 19:20 20m - / -15 CN2DX -4 / - 2 ✓ Closing fragment
07-28 18:38 20m - / - RZ4FWA -9 / - 4 Partial capture
07-28 18:26 20m - / -5 R3LDK -4 / - 4 ✓ Closing fragment
07-28 18:26 20m - / -14 G4HUE +4 / - 3 ✓ Closing fragment
07-28 16:21 20m - / - F1PPH -14 / - 7 Partial capture
07-27 20:30 40m -12 / - ER1CW -17 / - 3 ✓ Closing observed
07-27 20:25 40m -18 / - CT2IGO - / -9 4 ✓ Closing fragment
07-27 20:24 40m -16 / - GM0DEQ - / - 2 Partial capture
07-27 20:22 40m -17 / -14 UX7QV -15 / +3 5 ✓ Full exchange observed
07-27 20:20 40m -14 / - EC3A - / -12 3 ✓ Closing fragment
07-27 20:19 40m -16 / - RX3DTN -16 / -5 3 ✓ Closing observed
07-27 20:18 40m -16 / -14 UB6OCP -20 / -3 4 ✓ Full exchange observed
07-27 20:17 40m -20 / - S51PV - / -14 2 Partial capture
07-27 20:13 40m -13 / +5 DH0GBC -14 / 0 3 ✓ Full exchange observed
07-27 20:10 40m -18 / -4 SN1A -14 / +7 6 ✓ Full exchange observed
07-27 20:09 40m -15 / - DK8HC - / +3 2 ✓ Closing fragment
07-27 20:08 40m -14 / +1 HA7TM +4 / - 4 ✓ Full exchange observed
07-27 16:38 20m - / -13 F4FSY -12 / - 2 ✓ Closing fragment
07-27 16:34 20m - / - EA5ET -6 / - 2 ✓ Closing fragment
07-27 14:32 20m - / -23 PE1NPS -18 / - 2 Partial capture
07-27 14:26 20m - / -13 EA3HMM -16 / - 5 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
222345 -17 1843  CQ SP3MJK JO82
222400  +9 1843  SP3MJK SP1MGM JO73
222415 -23 1843  SP1MGM SP3MJK +23
222430 +10 1843  SP3MJK SP1MGM R-09
222445 -12 1843  SP1MGM SP3MJK RR73
222500 +10 1843  SP3MJK SP1MGM 73
222515 -14 1843  CQ SP3MJK JO82 (x3)
222700  -9 1843  SP3MJK SP2BAS JO94
195245  -9 1904  SP3MJK PC2J JO22 (x3)
40m 
UTC    dB Audio  Message
191915 +10 2930  SP3MJK F4BYA JN19 (x3)
192215  -4 1939  SP3MJK R1BEO R-12 (x2)
192415  -7 1178  SP3MJK F5MXH R-14
192745  -2 3018  SP3MJK F6BHK JN24 (x3)
193530 -22 1939  SP3MJK M7NFV JO02 (x5)
194345 -23 2199  SP3MJK G4XWR IO94
20m 
UTC    dB Audio  Message
170730  -7 1911  SP3MJK 9A4ZM 73
175430 -15 2138  SP3MJK TA1EDG KN41
184600 -22 2078  SP3MJK F4MGP JN04
184630  +2 2671  SP3MJK DL1R JN58 (x4)
185500  -6 2272  SP3MJK DJ5YS JN68 (x8)

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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