NF4A — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving NF4A, decoded by SO8OO in southeastern Poland. 112 FT8 messages attributed to this token as transmitter, on 40m, across 6 UTC dates in the available aggregate history. Observed between 2026-08-31 and 2026-11-06.
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 112 FT8 messages attributed to NF4A as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was -6 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 112 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -10 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 90.
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 NF4A 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 NF4A
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
- EM70 · 49 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,541 km (approx.)
- Last such locator decoded
- 2026-11-06 00:41 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 | NF4A S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 11-06 00:30 | 40m | -9 / -10 | EW4DX | +10 / -21 | 4 | ✓ Full exchange observed |
| 11-06 00:22 | 40m | - / +2 | SP5MXZ | -10 / - | 3 | ✓ Closing fragment |
| 11-06 00:22 | 40m | - / -2 | TC2TR | -12 / - | 2 | ✓ Closing fragment |
| 11-06 00:18 | 40m | -7 / +6 | LZ2CC | -9 / - | 2 | Partial capture |
| 11-06 00:13 | 40m | -11 / - | E70A | - / -12 | 4 | ✓ Closing fragment |
| 11-06 00:10 | 40m | -10 / - | KF9UG | - / -4 | 4 | ✓ Closing fragment |
| 11-06 00:09 | 40m | -6 / - | LU2MET | - / -14 | 2 | ✓ Closing fragment |
| 11-06 00:08 | 40m | -6 / - | EA4HTI | - / -11 | 2 | ✓ Closing fragment |
| 11-06 00:07 | 40m | -5 / - | SV9QWC | - / -17 | 3 | ✓ Closing fragment |
| 10-21 23:27 | 40m | -7 / - | LB3RE | - / - | 6 | Partial capture |
| 10-21 23:24 | 40m | -9 / -6 | 9A5CW | -4 / -11 | 6 | ✓ Full exchange observed |
| 10-21 23:22 | 40m | -8 / - | RK5M | - / -16 | 5 | ✓ Closing fragment |
| 10-02 02:10 | 40m | -11 / - | C5R | - / - | 5 | Partial capture |
| 09-21 00:00 | 40m | 0 / - | IW2MYH | - / -20 | 3 | ✓ Closing fragment |
| 09-20 23:58 | 40m | 0 / - | CX6TU | - / -11 | 3 | ✓ Closing fragment |
| 09-20 23:56 | 40m | +2 / -14 | UA3AGW | -6 / -12 | 5 | ✓ Full exchange observed |
| 09-20 23:55 | 40m | -1 / - | TN8GD | - / - | 2 | Partial capture |
| 09-20 23:53 | 40m | 0 / - | IU8RFW | - / -16 | 2 | Partial capture |
| 09-20 23:51 | 40m | -1 / - | DG1KPC | - / -13 | 2 | ✓ Closing fragment |
| 09-20 23:51 | 40m | 0 / -2 | EB5DFU | -8 / -9 | 7 | ✓ Full exchange observed |
| 09-20 23:50 | 40m | +1 / +9 | W1AW/9 | -22 / -1 | 3 | Partial capture |
| 09-20 23:48 | 40m | +1 / - | VJ6X | - / -16 | 2 | Partial capture |
| 09-20 23:45 | 40m | +2 / - | A61DD | - / - | 2 | Partial capture |
| 09-20 23:43 | 40m | 0 / - | OA4ENG | - / -11 | 2 | Partial capture |
| 09-20 23:41 | 40m | +3 / - | R2EA/P | - / - | 4 | Partial capture |
| 09-20 23:37 | 40m | -4 / - | RV6G/QRP | - / -19 | 2 | Partial capture |
| 09-20 23:34 | 40m | - / - | F6FHZ | -9 / - | 5 | Partial capture |
| 09-20 23:34 | 40m | -4 / -18 | RN6HK | +12 / -16 | 16 | ✓ Full exchange observed |
| 09-20 23:34 | 40m | -5 / - | N4DWD | - / 0 | 2 | ✓ Closing fragment |
| 09-20 23:33 | 40m | -6 / - | I1RJP | - / -10 | 2 | ✓ Closing fragment |
| 09-20 23:32 | 40m | -2 / - | F5NBU | - / -5 | 2 | ✓ Closing fragment |
| 09-20 23:30 | 40m | -3 / -4 | 4X1UF | -17 / -22 | 4 | ✓ Full exchange observed |
| 09-20 23:29 | 40m | -2 / -7 | HZ1TT | -6 / -5 | 6 | ✓ Full exchange observed |
| 08-31 02:29 | 40m | -8 / - | CT7AUT | -12 / -16 | 7 | ✓ Full exchange observed |
| 08-31 02:27 | 40m | -8 / - | US1VM | - / -15 | 2 | ✓ Closing fragment |
| 08-31 02:26 | 40m | -8 / - | 4O7CC | - / -20 | 3 | ✓ Closing fragment |
| 08-31 02:24 | 40m | -8 / - | <...> | - / -10 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 001715 -6 290 A92AE NF4A 73 001845 -7 291 LZ2CC NF4A EM70 001900 -9 1734 NF4A LZ2CC +06 002045 -8 290 VE6YD NF4A -11 002200 -12 1935 NF4A TC2TR -02 002200 -11 292 NF4A SP5MXZ +02 002230 -11 1935 NF4A TC2TR RR73 002230 -10 292 NF4A SP5MXZ +02 002300 +3 2887 NF4A MM0INH IO85 002330 -9 292 NF4A SP5MXZ RR73 003045 +10 690 NF4A EW4DX -10 003100 -8 290 EW4DX NF4A R-21 003115 +11 690 NF4A EW4DX RR73 003130 -10 290 EW4DX NF4A 73 004100 -8 290 MI7XHT NF4A EM70
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.
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