SP9JMZ — 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: JO90

Receiver-side FT8 activity involving SP9JMZ, decoded by SO8OO in southeastern Poland. 2,940 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 27 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-10-08.

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 2,940 FT8 messages attributed to SP9JMZ as the transmitting token by decoded message structure across 27 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (81%), followed by 40 m (19%) and 60 m (0%). Most decodes (52%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (81%); the estimated median was +3 dB.

Overview

2,940
Messages attributed
27
UTC dates decoded
366
Active 15-min windows
+3 dB
Estimated median S/N

Bands

80m · 2,380 60m · 1 40m · 558 20m · 1
First attributed message: 2026-06-13
Last attributed message: 2026-10-08 05:34 UTC

Observed FT8 message patterns

Attributed sample
2,940 messages
Active dates
27 UTC dates
Estimated median S/N
+3 dB
Estimated 10th-90th percentile
-14 to +11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 217, moderate (-15 to -9 dB) 338, strong (≥ -8 dB) 2,385.

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 SP9JMZ 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 SP9JMZ

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
JO90 · 1,976 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
208 km (approx.)
Last such locator decoded
2026-10-08 05:34 UTC

Other locator fields attributed to this token: JO80 (1).

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 UTCBandSP9JMZ S/NCounterpartCounterpart S/NMsgsCapture
10-08 05:33 80m +4 / - F1MXE - / - 3 Partial capture
10-07 23:42 80m -17 / - 8S2A -23 / -16 4 ✓ Closing observed
10-07 23:39 80m -19 / -17 G3WGC -1 / -4 5 ✓ Full exchange observed
10-07 23:18 80m - / -6 YU7AS +7 / - 3 Partial capture
10-07 23:16 80m -1 / -6 ON4MAP -6 / -7 4 ✓ Full exchange observed
10-07 23:12 40m - / -15 MM8FKF -12 / - 2 Partial capture
10-07 23:11 40m - / -10 UA9SY -20 / - 2 ✓ Closing fragment
10-07 22:55 80m -12 / - LB9ZG -9 / - 2 ✓ Closing observed
10-07 22:34 80m -10 / - DO5HOK - / -2 3 ✓ Closing fragment
10-07 22:32 80m - / -9 OH3CYT -4 / - 2 ✓ Closing fragment
10-07 21:49 80m -6 / - M1VPN - / - 4 Partial capture
10-07 21:44 80m -12 / -14 SQ8NA +6 / - 3 ✓ Closing observed
10-07 21:39 80m -21 / -5 DL7PIA +4 / - 3 ✓ Closing observed
10-07 21:38 80m - / -8 DL1UDO +9 / - 2 ✓ Closing fragment
10-07 21:34 80m - / -13 F4EGM -6 / - 3 Partial capture
10-07 21:31 80m -20 / -17 DL7ACA +7 / - 4 ✓ Closing observed
10-07 21:30 80m -14 / 0 SQ2RAD 0 / -5 3 Partial capture
10-07 21:29 80m - / -14 RX3ASQ -2 / - 2 ✓ Closing fragment
10-07 21:24 40m - / -2 M0MLS -4 / - 2 Partial capture
10-07 21:05 80m - / - F4ESO 0 / - 2 ✓ Closing fragment
10-07 20:57 40m - / 0 MW0USK +2 / - 2 ✓ Closing fragment
10-07 20:36 80m -6 / -5 OH5KNL +4 / -1 4 ✓ Full exchange observed
10-07 20:31 80m - / - OM3PR +6 / - 2 Partial capture
10-07 20:31 80m - / -10 SQ5ANT -2 / - 2 ✓ Closing fragment
10-07 20:29 80m - / -1 DK8CX +13 / - 3 ✓ Closing fragment
10-07 19:58 80m -11 / -20 IK2SAU +6 / -2 5 ✓ Full exchange observed
10-07 19:57 80m -11 / -4 PA4CC +14 / - 3 ✓ Closing observed
10-07 19:25 80m -12 / -10 YO2UKG +14 / -6 5 ✓ Full exchange observed
10-07 19:24 80m -8 / - OK1HEH +7 / -6 3 ✓ Closing observed
10-07 19:22 80m -11 / -7 9A5E +6 / -1 5 ✓ Full exchange observed
10-07 19:18 40m - / -7 SV1DKR -6 / - 2 ✓ Closing fragment
10-07 19:16 40m - / -11 TA1CQ -10 / - 2 ✓ Closing fragment
10-07 18:35 80m -7 / -15 RW3QW -1 / - 2 Partial capture
10-07 18:33 80m -4 / -11 R3YBG -14 / -8 5 ✓ Full exchange observed
10-07 18:32 80m -8 / -4 OH3MB -1 / - 4 ✓ Closing observed
10-07 17:43 80m -15 / - RK4HS - / - 3 Partial capture
10-07 17:41 80m - / -18 EW6BZ -2 / - 2 ✓ Closing fragment
10-07 17:37 40m - / -14 HA1DW -2 / - 2 ✓ Closing fragment
10-07 17:33 40m - / -19 UR3CFC +4 / - 2 ✓ Closing fragment
10-07 16:49 80m +1 / - UA3IAG - / - 4 Partial capture
10-07 16:48 80m -9 / 0 ES8JX -2 / -3 4 ✓ Full exchange observed
10-07 16:46 80m -4 / -14 DO8JB -2 / -9 5 ✓ Full exchange observed
10-07 16:45 80m -1 / - R4CC - / -9 4 ✓ Closing fragment
10-07 16:43 80m 0 / -6 UR5SG +10 / - 3 ✓ Closing observed
10-07 16:42 80m -1 / -23 RK6OQ -12 / -5 4 ✓ Full exchange observed
10-07 16:35 40m - / +5 DG0MAN +8 / - 3 ✓ Closing fragment
10-07 14:29 40m -9 / -5 I8OHQ -7 / - 11 Partial capture
10-07 14:27 40m -12 / - M0GBK - / - 4 Partial capture
10-07 13:52 40m -20 / - PD4HT -13 / -8 4 Partial capture
10-07 13:52 40m -16 / -19 UA4FKT -15 / -1 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
231800  +7 1794  SP9JMZ YU7AS -06 (x3)
233945 -16  980  G3WGC SP9JMZ JO90
234000  -2  979  SP9JMZ G3WGC -17
234015 -23  979  G3WGC SP9JMZ R-04
234030  +0  979  SP9JMZ G3WGC RR73
234045 -18  980  G3WGC SP9JMZ 73
234245 -19 1725  8S2A SP9JMZ JO90 (x2)
234330 -23 1725  SP9JMZ 8S2A RR73
234345 -14 1724  8S2A SP9JMZ 73
053345  -1 2579  F1MXE SP9JMZ JO90 (x3)
40m 
UTC    dB Audio  Message
191630 -10  850  SP9JMZ TA1CQ -11 (x2)
191800  -8 1855  SP9JMZ SV1DKR -07 (x2)
202615  -7 2171  SP9JMZ G0GFC RR73
205700  +1 1213  SP9JMZ MW0USK +00 (x2)
212215  +2 1782  SP9JMZ G1UZL -10
212445  -5 1487  SP9JMZ M0MLS -02 (x2)
220400  +4  580  SP9JMZ G4JBA IO90
231115 -22 1949  SP9JMZ UA9SY R-10 (x2)
231245 -12  997  SP9JMZ MM8FKF -15 (x2)
10m 
UTC    dB Audio  Message
155930 -18 1273  SP9JMZ IU8LPE RR73
20m 
UTC    dB Audio  Message
115130 +14 1957  SP9JMZ LZ1RAY R-26 (x3)

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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