PI4DX — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving PI4DX, decoded by SO8OO in southeastern Poland. 44,484 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 108 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-06.
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 44,484 FT8 messages attributed to PI4DX as the transmitting token by decoded message structure across 108 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (38%), followed by 80 m (31%) and 20 m (16%). The busiest six-hour window was 20:00-02:00 UTC, containing 47% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was +0.9 dB.
Overview
Bands
Last attributed message: 2026-10-06 18:40 UTC
Observed FT8 message patterns
- Attributed sample
- 44,484 messages
- Active dates
- 108 UTC dates
- Estimated median S/N
- +0.9 dB
- Estimated 10th-90th percentile
- -12.5 to +11 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2,444, moderate (-15 to -9 dB) 5,554, strong (≥ -8 dB) 36,486.
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 PI4DX 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 PI4DX
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
- JO21 · 31,132 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,192 km (approx.)
- Last such locator decoded
- 2026-10-06 18:40 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 | PI4DX S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-06 18:36 | 40m | +7 / - | BG0KD | - / -15 | 4 | ✓ Closing fragment |
| 10-06 18:30 | 40m | +4 / -5 | YO3CNW | -16 / -6 | 17 | ✓ Full exchange observed |
| 10-05 17:40 | 40m | -1 / - | UT8IIV | -21 / -12 | 3 | ✓ Closing observed |
| 10-05 17:36 | 40m | +5 / - | BH3HAC | - / -6 | 4 | ✓ Closing fragment |
| 10-05 17:35 | 40m | +6 / - | DL4DP | - / -2 | 2 | ✓ Closing fragment |
| 10-05 17:32 | 40m | +2 / -5 | YO5MTL | +2 / -3 | 5 | ✓ Full exchange observed |
| 10-05 17:28 | 40m | -3 / - | RW4F | - / -6 | 2 | ✓ Closing fragment |
| 10-05 17:27 | 40m | 0 / - | EU7DBF | -21 / -11 | 3 | ✓ Closing observed |
| 10-05 17:25 | 40m | 0 / - | DK8MT | -13 / -4 | 3 | ✓ Closing observed |
| 10-05 17:24 | 40m | 0 / -11 | F3CJ | -12 / -11 | 4 | ✓ Full exchange observed |
| 10-05 06:37 | 60m | -6 / - | IK0QBI | -21 / -11 | 7 | Partial capture |
| 10-05 06:35 | 60m | -5 / - | HB9ACA | -13 / - | 5 | ✓ Full exchange observed |
| 10-05 06:34 | 60m | -4 / - | EA2EED | - / -6 | 3 | ✓ Closing fragment |
| 10-05 06:32 | 60m | -3 / - | ON1JP | - / +7 | 2 | ✓ Closing fragment |
| 10-05 06:30 | 60m | -5 / - | ZL2AGY | - / -12 | 3 | ✓ Closing fragment |
| 10-05 06:20 | 40m | -7 / - | KD9IHG | - / -11 | 5 | Partial capture |
| 10-05 06:19 | 40m | 0 / - | WG5EEK | - / -9 | 2 | ✓ Closing fragment |
| 10-05 06:12 | 40m | -6 / - | N3FMC | - / 0 | 2 | ✓ Closing fragment |
| 10-05 06:03 | 40m | -6 / - | OK2SBI | - / -12 | 2 | ✓ Closing fragment |
| 10-05 05:55 | 40m | -11 / - | W4/KP4WW | - / - | 3 | Partial capture |
| 10-05 05:04 | 40m | -12 / - | UR5NQV | - / -3 | 2 | ✓ Closing fragment |
| 10-05 04:53 | 40m | -14 / - | YV5YAM | - / +2 | 2 | ✓ Closing fragment |
| 10-05 04:43 | 40m | -20 / - | DL7ROB | -21 / - | 2 | ✓ Closing observed |
| 10-05 04:22 | 40m | - / -14 | R80SAA | +4 / - | 2 | ✓ Closing fragment |
| 10-05 03:37 | 40m | -21 / - | W4IHQ | - / -25 | 3 | ✓ Closing fragment |
| 10-05 03:27 | 40m | -14 / - | K9TA | - / -13 | 2 | ✓ Closing fragment |
| 10-05 03:23 | 40m | -10 / - | XE2RZ | - / - | 3 | ✓ Closing fragment |
| 10-05 03:16 | 40m | -11 / - | N9VVV | - / -25 | 5 | Partial capture |
| 10-05 03:12 | 40m | -15 / - | YN1ZGN | - / - | 4 | Partial capture |
| 10-05 03:00 | 40m | -7 / - | IU8RTJ | - / -8 | 2 | ✓ Closing fragment |
| 10-05 02:58 | 40m | -8 / - | N9WKW | - / -3 | 2 | ✓ Closing fragment |
| 10-05 02:55 | 40m | -3 / - | KQ4LQO | - / -3 | 4 | ✓ Closing fragment |
| 10-05 02:44 | 40m | -8 / - | N3LCW | - / -12 | 3 | Partial capture |
| 10-05 02:41 | 40m | -8 / - | KY4HL | - / - | 6 | Partial capture |
| 10-05 02:38 | 40m | -3 / - | W4DR | - / -1 | 2 | ✓ Closing fragment |
| 10-05 02:37 | 40m | -4 / - | KO4AKO | - / -8 | 2 | ✓ Closing fragment |
| 10-05 02:35 | 40m | -9 / - | KE9EUV | - / -14 | 2 | ✓ Closing fragment |
| 10-05 02:33 | 40m | -2 / - | N4SJA | - / -7 | 2 | ✓ Closing fragment |
| 10-05 02:30 | 40m | -8 / - | W4CNA | - / -7 | 2 | ✓ Closing fragment |
| 10-05 02:24 | 40m | -8 / - | W9MDM | - / -10 | 6 | ✓ Closing fragment |
| 10-05 02:22 | 40m | -4 / - | KQ4EZN | - / -9 | 4 | ✓ Closing fragment |
| 10-05 02:19 | 40m | -7 / - | KQ4ODY | - / -8 | 3 | ✓ Closing fragment |
| 10-05 02:13 | 40m | -11 / - | WJ0RDN | - / - | 3 | Partial capture |
| 10-05 02:09 | 40m | -8 / - | K4CME | - / - | 2 | ✓ Closing fragment |
| 10-05 02:02 | 40m | -6 / - | WX9C | - / -13 | 2 | ✓ Closing fragment |
| 10-05 02:00 | 40m | -1 / - | WY0L | - / -11 | 2 | ✓ Closing fragment |
| 10-05 01:55 | 40m | -1 / - | N4FIG | - / +5 | 3 | ✓ Closing fragment |
| 10-05 01:52 | 40m | 0 / - | K2XB | - / -8 | 2 | ✓ Closing fragment |
| 10-05 01:50 | 40m | -2 / -14 | RC9WC | -9 / -7 | 4 | ✓ Full exchange observed |
| 10-05 01:45 | 40m | -9 / - | KQ4NYF | - / +3 | 4 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 183345 -14 1472 PI4DX YO3CNW R-05 (x2) 183430 +6 993 CQ PI4DX JO21 183500 +0 993 YO3CNW PI4DX RR73 183515 -19 1473 PI4DX YO3CNW R-05 183530 +5 993 YO3CNW PI4DX RR73 183545 -22 1472 PI4DX YO3CNW 73 183600 +7 993 BG0KD PI4DX -15 (x4) 183800 +8 993 CQ PI4DX JO21 (x4)
UTC dB Audio Message 063515 -4 1877 EA2EED PI4DX RR73 063545 -6 1877 HB9ACA PI4DX JO21 063600 -11 2032 PI4DX HB9ACA +24 063615 -4 1877 HB9ACA PI4DX R+21 063630 -15 2032 PI4DX HB9ACA RR73 063645 -5 1877 HB9ACA PI4DX 73 063715 -3 1877 CQ PI4DX JO21 063730 -24 1877 PI4DX IK0QBI JN63 063745 -1 1877 IK0QBI PI4DX -11 063800 -22 1877 PI4DX IK0QBI JN63 063815 -5 1877 IK0QBI PI4DX -11 063830 -18 1877 PI4DX IK0QBI JN63 063845 -7 1877 IK0QBI PI4DX -11 (x2) 064130 -22 1877 PI4DX IK0QBI JN63
UTC dB Audio Message 082915 -19 1663 CQ PI4DX JO21 (x8) 073515 -22 2147 HA8CQ PI4DX RR73 170915 -18 1046 PP1BB PI4DX R-01 (x3) 172500 -4 980 PI4DX EA5FDA -11 (x2) 143030 -9 889 PI4DX EA7KPC RR73
UTC dB Audio Message 053030 -1 1002 W2PK PI4DX RR73 053130 -4 1002 CQ PI4DX JO21 (x5) 053445 +6 1002 KE4EB PI4DX +15 (x2) 053545 +6 1002 CQ PI4DX JO21 (x3) 221530 -4 1960 PI4DX DG5PW JO30 (x4)
UTC dB Audio Message 200200 -12 1590 GM4AUP PI4DX -18 (x2) 200300 -10 1590 CQ PI4DX JO21 (x3) 200430 -21 1590 SP3BP PI4DX +02 200445 -20 1991 PI4DX SP3BP R+05 (x2) 200530 -16 1590 CQ PI4DX JO21 (x7)
UTC dB Audio Message 132115 +27 2536 SP1ZMO PI4DX JO21 (x2) 132200 -7 598 PI4DX RR73; DH7IF <...> +00 132215 +21 2536 CQ PI4DX JO21 (x2) 152315 +6 954 <...> PI4DX JO21 (x10)
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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