SP5MXZ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SP5MXZ, decoded by SO8OO in southeastern Poland. 3,968 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 37 UTC dates in the available aggregate history. Observed between 2026-08-04 and 2026-10-12.
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 3,968 FT8 messages attributed to SP5MXZ as the transmitting token by decoded message structure across 37 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (57%), followed by 40 m (21%) and 60 m (15%). Most decodes (59%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (93%); the estimated median was +5 dB.
Overview
Bands
Last attributed message: 2026-10-12 05:53 UTC
Observed FT8 message patterns
- Attributed sample
- 3,968 messages
- Active dates
- 37 UTC dates
- Estimated median S/N
- +5 dB
- Estimated 10th-90th percentile
- -6 to +14 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 94, moderate (-15 to -9 dB) 165, strong (≥ -8 dB) 3,709.
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 SP5MXZ 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 SP5MXZ
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
- KO03 · 1,352 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 400 km (approx.)
- Last such locator decoded
- 2026-10-11 22:05 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 UTC | Band | SP5MXZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-12 05:49 | 80m | +12 / - | <...> | - / -10 | 10 | Partial capture |
| 10-12 05:03 | 80m | +12 / - | KE4EB | - / -19 | 10 | Partial capture |
| 10-12 03:32 | 80m | -5 / - | 4X1FK | -8 / +1 | 13 | ✓ Full exchange observed |
| 10-12 02:45 | 80m | +12 / - | R9SCJ | - / -7 | 3 | ✓ Closing fragment |
| 10-12 01:34 | 80m | +14 / - | VP2MAW | - / -18 | 11 | Partial capture |
| 10-12 00:37 | 80m | +18 / - | UK8FF | - / -16 | 11 | Partial capture |
| 10-11 22:52 | 80m | +8 / - | <...> | - / -25 | 11 | Partial capture |
| 10-11 21:51 | 80m | -4 / -5 | PA3GDL | +6 / -1 | 5 | ✓ Full exchange observed |
| 10-11 21:31 | 80m | +3 / - | OK9BMT | - / -18 | 3 | ✓ Closing fragment |
| 10-11 21:25 | 80m | +2 / -23 | JA6BZI | -16 / -21 | 4 | ✓ Full exchange observed |
| 10-11 21:15 | 80m | +4 / -19 | JA5XAE | -10 / -18 | 6 | ✓ Full exchange observed |
| 10-11 21:10 | 80m | 0 / -5 | DL6RS | -2 / -17 | 5 | ✓ Full exchange observed |
| 10-11 20:56 | 80m | +10 / - | JA9APS | - / -20 | 2 | Partial capture |
| 10-11 20:50 | 80m | +14 / - | JK1OZS | - / -18 | 2 | ✓ Closing fragment |
| 10-11 20:46 | 80m | - / - | JR4FYW | -10 / - | 2 | Partial capture |
| 10-11 20:45 | 80m | +9 / - | JA2VQF | - / -22 | 2 | ✓ Closing fragment |
| 10-11 20:42 | 80m | +11 / - | JR3REX | -12 / -14 | 4 | ✓ Closing observed |
| 10-11 20:38 | 80m | +13 / - | JR3REX | - / -16 | 2 | Partial capture |
| 10-11 20:38 | 80m | +15 / - | OZ1HPS | +5 / -14 | 3 | ✓ Closing observed |
| 10-11 20:36 | 80m | +14 / - | SP2WIL | - / -17 | 2 | ✓ Closing fragment |
| 10-11 20:35 | 80m | +8 / - | JR3REX | - / -16 | 2 | Partial capture |
| 10-11 20:32 | 80m | +8 / - | JA0HXV | - / -21 | 2 | ✓ Closing fragment |
| 10-11 20:29 | 80m | +9 / - | 4Z5AV | - / -9 | 2 | ✓ Closing fragment |
| 10-11 20:27 | 80m | +10 / - | JA5FDJ | - / -16 | 2 | ✓ Closing fragment |
| 10-11 20:25 | 80m | +20 / - | JI4JKO | -19 / -15 | 4 | ✓ Closing observed |
| 10-11 20:25 | 80m | - / - | PA3FMK | -21 / - | 2 | Partial capture |
| 10-11 20:24 | 80m | +18 / -2 | DL1SRS | -5 / -19 | 5 | ✓ Full exchange observed |
| 10-11 20:22 | 80m | +16 / - | JA6LCJ | - / -16 | 2 | Partial capture |
| 10-11 20:20 | 80m | +14 / - | JA0LFV | - / -21 | 2 | ✓ Closing fragment |
| 10-11 20:17 | 80m | +8 / - | 4Z5NN | - / -16 | 2 | Partial capture |
| 10-11 20:09 | 80m | +6 / -5 | DL5AX | -6 / -14 | 4 | ✓ Full exchange observed |
| 10-11 20:08 | 80m | +10 / - | JA7FTR | - / -22 | 2 | ✓ Closing fragment |
| 10-11 20:06 | 80m | +15 / -5 | IK2GXE | -2 / -12 | 5 | ✓ Full exchange observed |
| 10-11 20:05 | 80m | +8 / - | G3TKT | - / -18 | 2 | ✓ Closing fragment |
| 10-11 19:58 | 80m | +15 / - | ON7VZ | - / -14 | 2 | ✓ Closing fragment |
| 10-11 19:56 | 80m | +16 / - | DF5RA | -6 / -9 | 3 | Partial capture |
| 10-11 19:53 | 80m | +18 / -10 | DL1OMP | -1 / -13 | 5 | ✓ Full exchange observed |
| 10-11 19:51 | 80m | +15 / - | JE2LPC | - / -20 | 2 | ✓ Closing fragment |
| 10-11 19:50 | 80m | +16 / - | SQ5NO | - / -17 | 2 | ✓ Closing fragment |
| 10-11 19:48 | 80m | +16 / - | UN7ED | - / -17 | 3 | ✓ Closing fragment |
| 10-11 19:45 | 80m | +17 / -6 | DO4BMA | +6 / -9 | 6 | ✓ Full exchange observed |
| 10-11 19:43 | 80m | +10 / - | UR5DU | -13 / -7 | 3 | ✓ Closing observed |
| 10-11 19:41 | 80m | +17 / -4 | R4FDD | -10 / -7 | 4 | ✓ Full exchange observed |
| 10-11 19:40 | 80m | +9 / - | RC9WC | - / -14 | 2 | Partial capture |
| 10-11 19:33 | 80m | +9 / -3 | RA1QCX | +1 / -6 | 5 | ✓ Full exchange observed |
| 10-11 19:24 | 80m | +16 / - | RA4ACX | - / -15 | 2 | ✓ Closing fragment |
| 10-11 19:22 | 80m | +20 / - | OK1TRJ | +12 / -2 | 5 | ✓ Full exchange observed |
| 10-11 19:22 | 80m | +18 / 0 | SP4WJ | -8 / -2 | 15 | ✓ Full exchange observed |
| 10-11 19:21 | 80m | +15 / -22 | RT2H | +6 / -9 | 5 | ✓ Full exchange observed |
| 10-11 19:20 | 80m | +16 / - | SQ1EIC | - / -7 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 050530 +12 2866 KE4EB SP5MXZ -19 (x5) 054900 +13 2865 <...> SP5MXZ -10 (x10)
UTC dB Audio Message 154630 +2 902 HF50HSP SP5MXZ -20 155130 +0 821 R9LY SP5MXZ +14 (x5) 155500 +2 2887 R80SAA SP5MXZ +15 155515 +7 2888 SP5MXZ R80SAA R-04 (x2) 162500 -4 1240 RW9AW SP5MXZ -12 (x2) 181045 -8 572 SP5MXZ 4L6EZ 73 185830 -12 1829 SP5MXZ IU3WOZ JN55 (x3)
UTC dB Audio Message 000445 +15 2612 CQ SP5MXZ KO03 (x3) 000615 +12 2612 RN3AOE SP5MXZ -07 000630 +4 2612 SP5MXZ RN3AOE R+01 000645 +11 2612 RN3AOE SP5MXZ RR73 000700 +2 2612 SP5MXZ RN3AOE 73 000715 +17 2612 CQ SP5MXZ KO03 (x8)
UTC dB Audio Message 195545 -20 1678 SP5MXZ EA4HEA R-10 (x2) 195715 -16 1847 SP5MXZ OK1BN R-10 (x2) 200115 -8 540 SP5MXZ TA3GO R-09 (x2) 200745 -15 1939 SP5MXZ EB3CJR R+01 (x2) 201215 +1 1235 SP5MXZ TM47CDXC R+03 213530 -19 2232 SP5MXZ EA5IT R-19 (x3) 213700 +3 1820 SP5MXZ F1TXI R+02 (x2) 214430 -16 2237 SP5MXZ EA4IXO R-08
UTC dB Audio Message 151615 -11 802 SP5MXZ R8LDJ R+01 (x6) 154400 -11 1513 SP5MXZ EX7DY R-11 (x2) 183645 -24 1462 EA8BYO SP5MXZ -11 184400 -21 1460 SP5MXZ EA8BYO R-13 (x3) 080415 -19 939 SP5MXZ TA3MHA R-14 080445 -18 1747 SP5MXZ F4HSB JN37 (x2)
UTC dB Audio Message 093130 +5 1098 SP5MXZ PA3BQC JO22 (x3) 093930 -15 940 SP5MXZ GJ0KYZ +04 085115 -16 2044 SP5MXZ <...> R-04 075815 -23 1735 SP5MXZ IW8PQ R-03
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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