SP3MZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO82

Receiver-side FT8 activity involving SP3MZ, decoded by SO8OO in southeastern Poland. 899 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-10-05.

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 899 FT8 messages attributed to SP3MZ as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (66%), followed by 40 m (32%) and 20 m (3%). Most decodes (92%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was +1.3 dB.

Overview

899
Messages attributed
26
UTC dates decoded
118
Active 15-min windows
+1.3 dB
Estimated median S/N

Bands

80m · 589 40m · 287 20m · 23
First attributed message: 2026-06-15
Last attributed message: 2026-10-05 21:08 UTC

Observed FT8 message patterns

Attributed sample
899 messages
Active dates
26 UTC dates
Estimated median S/N
+1.3 dB
Estimated 10th-90th percentile
-12 to +12.6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 45, moderate (-15 to -9 dB) 102, strong (≥ -8 dB) 752.

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 SP3MZ 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 SP3MZ

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 · 515 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
439 km (approx.)
Last such locator decoded
2026-10-05 21:07 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 UTCBandSP3MZ S/NCounterpartCounterpart S/NMsgsCapture
10-11 09:39 10m - / -14 4X5MZ +4 / - 2 ✓ Closing fragment
10-06 18:33 40m - / - M0IQW -6 / - 3 Partial capture
10-06 18:32 40m - / +5 RD3BZ -7 / - 3 ✓ Closing fragment
10-06 17:32 40m - / +3 DJ9HX +9 / - 2 ✓ Closing fragment
10-06 17:27 40m - / -7 EA2CVV -9 / - 2 Partial capture
10-05 21:06 80m +6 / - EA4GOY - / +9 5 ✓ Closing fragment
10-05 21:02 80m +2 / - EI2KM - / - 7 Partial capture
10-05 20:57 80m 0 / - OE6/HB9DGR - / - 9 Partial capture
10-05 20:50 80m 0 / -13 F5RMK -4 / -6 5 ✓ Full exchange observed
10-05 20:45 80m 0 / - SQ5RJK +4 / - 6 ✓ Closing observed
10-05 20:44 80m +2 / -6 EU1EU -1 / -10 4 ✓ Full exchange observed
10-05 20:09 40m - / -9 F8ADF -2 / - 2 ✓ Closing fragment
10-05 20:02 40m - / +6 IK2HNG +3 / - 2 ✓ Closing fragment
10-05 19:51 40m - / -10 LA8ENA -10 / - 2 ✓ Closing fragment
10-05 19:41 40m - / - LZ2BC -14 / - 4 Partial capture
10-05 19:22 40m - / -8 IZ4EFV +2 / - 2 ✓ Closing fragment
09-25 20:00 80m +5 / +2 F8FUA -2 / -11 6 ✓ Full exchange observed
09-25 19:56 80m +2 / -12 F1PBZ -6 / - 4 ✓ Closing observed
09-25 19:53 80m -3 / - PC2J - / -8 3 ✓ Closing fragment
09-25 19:44 80m -1 / - OK9DMR -24 / -13 12 Partial capture
09-25 19:38 80m +3 / +5 ON5MX -8 / - 11 ✓ Closing observed
09-25 19:33 80m +4 / -1 DA6YY -3 / -3 4 ✓ Full exchange observed
09-25 19:25 80m -1 / - OD5XX - / - 11 Partial capture
09-25 19:17 80m +2 / - OD5XX - / - 4 Partial capture
09-25 19:14 80m -2 / - OD5XX - / - 2 Partial capture
09-25 19:10 80m +1 / - LB6LK - / - 7 Partial capture
09-25 18:28 80m +5 / +8 HA8RC +6 / - 3 ✓ Closing observed
09-25 18:21 80m +2 / -8 OT8P +6 / +6 4 ✓ Full exchange observed
09-25 18:20 80m - / 0 UA3SCU -12 / - 2 Partial capture
09-25 18:18 80m +3 / -12 LZ1EV -8 / -7 3 ✓ Full exchange observed
09-25 18:13 80m -3 / -3 HB3YOR -10 / -13 4 Partial capture
09-25 17:23 80m +2 / - OH3GBW - / -8 2 ✓ Closing fragment
09-25 17:16 80m +3 / - PA2PF - / -17 14 Partial capture
09-25 17:15 80m +3 / - SD5X +3 / -4 3 ✓ Closing observed
09-25 17:04 80m +4 / -3 YO2UKG +12 / +7 5 ✓ Full exchange observed
09-25 16:58 80m +4 / +4 OK1SI +6 / +8 8 ✓ Full exchange observed
09-25 15:29 80m -2 / -2 Z62NS -4 / -14 5 ✓ Full exchange observed
09-25 15:27 80m -3 / - DL7UKM -13 / +1 5 ✓ Full exchange observed
09-25 15:25 80m -6 / -6 HF5A -6 / +3 4 ✓ Full exchange observed
09-25 15:21 80m - / - HF5A 0 / - 2 Partial capture
09-25 15:19 80m -2 / +1 DL0AA -9 / -17 7 ✓ Full exchange observed
09-25 15:16 40m -4 / -10 R7LC -12 / -5 5 ✓ Full exchange observed
09-25 15:14 40m -2 / - DL1ASL -20 / -9 4 ✓ Full exchange observed
09-25 15:10 40m -2 / -6 SQ8V -2 / +1 7 ✓ Full exchange observed
09-25 15:09 40m +5 / -4 DJ0BS -8 / +10 4 ✓ Full exchange observed
09-25 09:27 10m - / +2 RM8L -4 / - 3 ✓ Closing fragment
09-24 21:03 80m -5 / - HB9EXN - / -6 4 Partial capture
09-24 21:01 80m -5 / - EA5KT -9 / - 2 ✓ Closing observed
09-24 20:55 80m -8 / -9 G1ZHD -17 / -16 9 ✓ Full exchange observed
09-24 20:53 80m -8 / - F1PBZ - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
083230 -10 2682  SP3MZ IQ4JO R-04 (x2)
201800  -5 2931  SP3MZ DN9OPA R-12
102700 -20 1398  SP3MZ OH3OJ -03 (x2)
102930  -5 1125  SP3MZ DL3MIB JN57 (x2)
103130 -15 1454  SP3MZ OT4R +11
103130  -8 1126  SP3MZ DL3MIB 73
103300 -20 1454  SP3MZ OT4R RR73
092715  -1 2419  SP3MZ RM8L MO27 (x3)
093930  +5  642  SP3MZ 4X5MZ -14 (x2)
40m 
UTC    dB Audio  Message
195245  -3  443  SP3MZ RD7KW KN75
200215  +1 1781  SP3MZ IK2HNG +06 (x2)
200945  -2  743  SP3MZ F8ADF -09 (x2)
172700 -10 1124  SP3MZ EA2CVV IN91 (x2)
173200 +10  894  SP3MZ DJ9HX R+03 (x2)
183230  -9 2339  SP3MZ RD3BZ KO85 (x3)
183330  -5 1387  SP3MZ M0IQW IO91 (x3)
80m 
UTC    dB Audio  Message
210045  +1 1345  OE6/HB9DGR SP3MZ JO82 (x3)
210245  +7 1345  EI2KM SP3MZ JO82 (x7)
210645  +5 1345  EA4GOY SP3MZ JO82 (x5)
20m 
UTC    dB Audio  Message
111115  +0 1106  NX4RH SP3MZ JO82
111515  +2 1386  EA2EED SP3MZ JO82 (x2)
123215  +1 1105  CQ SP3MZ JO82 (x2)
123400  +2 1105  M1DBB SP3MZ JO82 (x3)
123530 -15 1578  SP3MZ M7JVT IO94 (x2)
202445 -16 1387  SP3MZ R7OV 73

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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