EA1RFF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EA1RFF, decoded by SO8OO in southeastern Poland. 614 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-29 and 2026-08-21.
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 614 FT8 messages attributed to EA1RFF as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (91%), followed by 20 m (9%). Most decodes (61%) fell within the six-hour window 20:00-02:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-08-21 06:02 UTC
Observed FT8 message patterns
- Attributed sample
- 614 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -11 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 78, strong (≥ -8 dB) 513.
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 EA1RFF 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 EA1RFF
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
- IN52 · 508 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,488 km (approx.)
- Last such locator decoded
- 2026-08-21 06:02 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 | EA1RFF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-21 06:45 | 20m | - / - | IK4LZH | -10 / - | 4 | Partial capture |
| 08-21 06:43 | 20m | - / -6 | F4AGZ | -16 / - | 2 | Partial capture |
| 08-21 06:35 | 20m | - / 0 | DL6UCK | +6 / - | 5 | ✓ Closing fragment |
| 08-21 06:35 | 20m | - / - | DL5DQZ | +5 / - | 14 | Partial capture |
| 08-21 06:33 | 20m | - / -10 | F4LNM | +10 / - | 3 | ✓ Closing fragment |
| 08-21 06:32 | 20m | - / -13 | EC5JC | +4 / - | 2 | ✓ Closing fragment |
| 08-21 06:28 | 20m | - / 0 | OZ6G | +1 / - | 3 | ✓ Closing fragment |
| 08-21 06:22 | 20m | - / -13 | RK4FF | 0 / - | 4 | ✓ Closing fragment |
| 08-21 06:14 | 20m | - / - | RX3ASQ | -16 / - | 2 | Partial capture |
| 08-21 06:13 | 20m | - / -7 | RK4FF | -3 / - | 8 | Partial capture |
| 08-21 06:09 | 20m | - / - | RX3ASQ | -19 / - | 2 | Partial capture |
| 08-21 06:03 | 20m | - / -12 | RK4FF | 0 / - | 2 | Partial capture |
| 08-21 06:02 | 20m | - / - | RX3ASQ | -19 / - | 3 | Partial capture |
| 08-21 06:00 | 20m | - / - | F4LNM | -10 / - | 2 | Partial capture |
| 08-21 05:56 | 20m | - / - | RX3ASQ | -17 / - | 2 | Partial capture |
| 08-21 05:48 | 20m | - / - | DL8WEM | +1 / - | 2 | Partial capture |
| 08-21 05:48 | 20m | - / - | RX3ASQ | -16 / - | 2 | Partial capture |
| 08-21 05:43 | 20m | - / -20 | IS0KNG | -17 / - | 4 | Partial capture |
| 08-21 04:41 | 40m | - / - | DL6KVB | -6 / - | 2 | Partial capture |
| 08-21 04:30 | 40m | -4 / - | W4KAM | - / -8 | 2 | ✓ Closing fragment |
| 08-21 04:27 | 40m | -2 / -21 | UR3CFC | -5 / -8 | 4 | Partial capture |
| 08-21 04:11 | 40m | - / -17 | OZ3AEV | +2 / - | 4 | Partial capture |
| 08-21 04:04 | 40m | - / - | RA3ZDU | -2 / - | 3 | Partial capture |
| 08-21 03:34 | 40m | -4 / - | DL8WEM | - / -7 | 2 | ✓ Closing fragment |
| 08-21 03:21 | 40m | - / - | US3EW | 0 / - | 2 | Partial capture |
| 08-21 03:14 | 40m | -5 / -8 | R6LE | +6 / - | 4 | ✓ Closing observed |
| 08-21 03:06 | 40m | - / - | SV1TRJ | 0 / - | 2 | Partial capture |
| 08-21 02:40 | 40m | - / -1 | UT5ECZ | +6 / - | 2 | ✓ Closing fragment |
| 08-21 02:38 | 40m | - / -7 | UT2AU | 0 / - | 3 | ✓ Closing fragment |
| 08-21 02:25 | 40m | - / - | YO8RSL | -18 / - | 2 | ✓ Closing fragment |
| 08-21 02:18 | 40m | - / - | SV1TRJ | +1 / - | 6 | Partial capture |
| 08-21 02:11 | 40m | +1 / +1 | LY1DY | -1 / -18 | 9 | ✓ Full exchange observed |
| 08-21 02:09 | 40m | +2 / - | UX7QV | - / -19 | 4 | Partial capture |
| 08-21 01:59 | 40m | - / - | RK4FAJ | +13 / - | 2 | Partial capture |
| 08-21 01:45 | 40m | -2 / -8 | RK4FF | +19 / -15 | 5 | ✓ Full exchange observed |
| 08-21 01:42 | 40m | -4 / - | KF9UG | - / -6 | 2 | ✓ Closing fragment |
| 08-21 01:24 | 40m | -1 / -10 | YO4NF | +8 / -14 | 5 | ✓ Full exchange observed |
| 08-21 01:19 | 40m | 0 / - | DL9KM | - / -8 | 2 | ✓ Closing fragment |
| 08-21 01:17 | 40m | 0 / 0 | SP4NKU | -16 / - | 4 | ✓ Closing observed |
| 08-21 01:11 | 40m | -2 / -12 | EC3A | -7 / +3 | 4 | ✓ Full exchange observed |
| 08-21 01:00 | 40m | - / - | RX3ASQ | -5 / - | 6 | Partial capture |
| 08-21 00:52 | 40m | - / - | RA3ZDU | +14 / - | 2 | Partial capture |
| 08-21 00:50 | 40m | - / - | RX3ASQ | -2 / - | 6 | Partial capture |
| 08-21 00:45 | 40m | - / - | RX3ASQ | -5 / - | 2 | Partial capture |
| 08-21 00:44 | 40m | - / - | AA4R | -10 / - | 2 | Partial capture |
| 08-21 00:39 | 40m | - / - | RX3ASQ | -6 / - | 4 | Partial capture |
| 08-21 00:32 | 40m | - / - | RX3ASQ | 0 / - | 2 | Partial capture |
| 08-20 23:18 | 40m | - / -14 | HF5A | +10 / - | 3 | ✓ Closing fragment |
| 08-20 23:16 | 40m | - / - | RX3ASQ | -6 / - | 2 | Partial capture |
| 08-20 23:14 | 40m | - / - | SV1TRJ | -8 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 063845 +5 933 EA1RFF DL5DQZ JO61 063915 +6 758 EA1RFF DL6UCK 73 063915 +1 933 EA1RFF DL5DQZ JO61 (x2) 063945 -17 785 EA1RFF DK4RH JO31 064115 +8 874 EA1RFF DL5DQZ JO61 (x3) 064315 -19 1785 EA1RFF F4AGZ JN38 064315 +1 874 EA1RFF DL5DQZ JO61 064345 -14 1785 EA1RFF F4AGZ R-06 064515 -7 462 EA1RFF IK4LZH JN54 (x4)
UTC dB Audio Message 043600 -5 2825 CQ EA1RFF IN52 a1 (x6) 044145 -7 2825 EA1RFF DL6KVB JO64 044200 -7 2825 CQ EA1RFF IN52 a1 044215 -6 2825 EA1RFF DL6KVB JO64 044230 -4 2824 CQ EA1RFF IN52 (x6)
UTC dB Audio Message 124215 -9 576 EA1RFF EA5OL -13
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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