F4NPC — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4NPC, decoded by SO8OO in southeastern Poland. 365 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-30 and 2026-09-19.
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 365 FT8 messages attributed to F4NPC as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (93%), followed by 20 m (7%). Most decodes (77%) fell within the six-hour window 22:00-04:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-09-19 00:04 UTC
Observed FT8 message patterns
- Attributed sample
- 365 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -16 to -2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 39, moderate (-15 to -9 dB) 181, strong (≥ -8 dB) 145.
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 F4NPC 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 F4NPC
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
- JN23 · 239 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,462 km (approx.)
- Last such locator decoded
- 2026-09-19 00:04 UTC
Other locator fields attributed to this token: JM23 (21).
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 | F4NPC S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 21:09 | 40m | - / -8 | PD0IFI | +3 / - | 3 | ✓ Closing fragment |
| 09-18 23:00 | 40m | -5 / -16 | 4X5JK | -7 / -17 | 23 | Partial capture |
| 09-18 22:59 | 40m | -4 / - | VE3CM | - / - | 2 | Partial capture |
| 09-18 22:54 | 40m | -5 / - | 4X5JK | - / - | 3 | Partial capture |
| 09-18 22:50 | 40m | -8 / - | A61DD | - / - | 7 | Partial capture |
| 09-18 22:39 | 40m | -8 / - | TF3VS | - / - | 4 | Partial capture |
| 09-18 22:38 | 40m | -12 / - | DJ0MAB | - / -18 | 2 | ✓ Closing fragment |
| 09-18 22:29 | 40m | -8 / -15 | PD0IFI | -22 / -20 | 8 | Partial capture |
| 09-16 21:21 | 40m | -10 / -9 | HZ1TT | -12 / -4 | 17 | ✓ Full exchange observed |
| 09-16 21:15 | 40m | -16 / -23 | LZ2VQ | -13 / -12 | 7 | ✓ Full exchange observed |
| 09-14 20:33 | 40m | - / - | UR4QWW | -9 / - | 4 | Partial capture |
| 09-14 20:31 | 40m | - / - | DK8HC | -5 / - | 5 | Partial capture |
| 09-14 20:29 | 40m | - / -13 | M0BEW | -2 / - | 2 | ✓ Closing fragment |
| 09-13 06:07 | 40m | - / - | F4BYA | +1 / - | 3 | Partial capture |
| 09-13 06:03 | 40m | - / - | YO6LM | +16 / - | 2 | Partial capture |
| 09-13 05:10 | 40m | - / -6 | S52D | +8 / - | 3 | ✓ Closing fragment |
| 09-13 04:49 | 40m | -20 / - | HI3K | - / - | 4 | Partial capture |
| 09-13 04:31 | 40m | -13 / - | W8MW | - / - | 6 | Partial capture |
| 09-13 04:15 | 40m | -13 / - | UX7QV | - / -1 | 11 | Partial capture |
| 09-13 04:12 | 40m | -10 / - | SQ8RMX | - / 0 | 2 | ✓ Closing fragment |
| 09-13 04:08 | 40m | -6 / - | UT4PA | - / +1 | 2 | Partial capture |
| 09-13 03:48 | 40m | - / -15 | US3EW | +8 / - | 3 | ✓ Closing fragment |
| 09-13 03:43 | 40m | - / - | TA3NK | -8 / - | 7 | Partial capture |
| 09-13 03:36 | 40m | +2 / -11 | R5AV | +1 / -2 | 4 | ✓ Full exchange observed |
| 09-13 03:16 | 40m | - / -21 | WA3THL | -18 / - | 5 | Partial capture |
| 09-13 02:50 | 40m | - / -21 | W6NWS | +10 / - | 2 | ✓ Closing fragment |
| 09-13 01:15 | 40m | - / -18 | R6LE | -14 / - | 2 | Partial capture |
| 09-13 00:53 | 40m | -12 / -12 | UN8PC | -10 / -10 | 14 | Partial capture |
| 09-13 00:47 | 40m | -7 / -6 | RV6MX | -6 / -7 | 4 | ✓ Full exchange observed |
| 09-13 00:43 | 40m | -2 / - | UA3PAB | - / -2 | 2 | ✓ Closing fragment |
| 09-13 00:34 | 40m | -8 / - | SP1ZMO | - / -10 | 10 | Partial capture |
| 09-13 00:28 | 40m | -2 / - | UX7QV | - / -5 | 5 | Partial capture |
| 09-13 00:18 | 40m | -14 / - | SP5MIG | - / +4 | 2 | ✓ Closing fragment |
| 09-12 23:59 | 40m | -7 / -7 | UN7JO | -7 / -6 | 5 | ✓ Full exchange observed |
| 09-12 23:55 | 40m | -15 / - | KF9UG | - / -16 | 3 | Partial capture |
| 09-12 23:51 | 40m | -8 / - | KF9UG | - / -16 | 2 | Partial capture |
| 09-12 23:46 | 40m | -10 / - | DC9GT | - / -13 | 2 | ✓ Closing fragment |
| 09-12 23:25 | 40m | - / -3 | M7LYG | -9 / - | 3 | ✓ Closing fragment |
| 09-12 23:07 | 40m | -10 / - | SP5EXA | - / -14 | 3 | Partial capture |
| 09-12 22:53 | 40m | - / - | PI4TX | -8 / - | 2 | Partial capture |
| 09-12 22:41 | 40m | -12 / -12 | TF8KW | -16 / -20 | 6 | Partial capture |
| 09-12 22:36 | 40m | -16 / - | UX7QV | - / -11 | 6 | Partial capture |
| 09-12 22:33 | 40m | -13 / - | PD7BDN | -11 / - | 2 | ✓ Closing observed |
| 09-12 22:31 | 40m | - / - | G4CFS | +5 / - | 2 | Partial capture |
| 09-12 22:31 | 40m | - / -8 | PD0IFI | +12 / - | 4 | Partial capture |
| 09-12 22:31 | 40m | - / - | PD0LBY | -6 / - | 6 | Partial capture |
| 09-12 22:24 | 40m | - / - | CR7BRV | -4 / - | 2 | ✓ Closing fragment |
| 09-12 22:23 | 40m | - / -8 | PD0IFI | +9 / - | 9 | Partial capture |
| 09-12 22:04 | 40m | - / - | IW2EPE | -10 / - | 2 | Partial capture |
| 09-12 22:02 | 40m | - / -9 | PC2J | -4 / - | 5 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 230815 -15 2392 F4NPC 4X5JK -16 (x2) 232245 -2 644 G8KHF F4NPC JN23 232645 -8 2178 HB9HKJ/QRP F4NPC JN23 233015 -12 2185 UB3ADO/P F4NPC R+08 234715 -9 2168 SP100PKP F4NPC JN23 000115 -9 2114 CQ F4NPC JN23 (x6) 210915 +5 2184 F4NPC PD0IFI JO32 (x3)
UTC dB Audio Message 135845 +13 624 F4NPC F4HTA +05 (x2) 151715 -8 1669 RI1FJL F4NPC JM23 (x6) 152445 -8 1754 UR5WT F4NPC JM23 152515 -7 1752 RI1FJL F4NPC JM23 (x4) 153030 -9 420 F4NPC RI1FJL -19 (x2)
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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