EA4IAH — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EA4IAH, decoded by SO8OO in southeastern Poland. 206 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 31 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-18.
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 206 FT8 messages attributed to EA4IAH as the transmitting token by decoded message structure across 31 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (76%), followed by 40 m (24%). Several six-hour UTC windows tied for the largest share (92%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.8 dB.
Overview
Bands
Last attributed message: 2026-09-18 20:58 UTC
Observed FT8 message patterns
- Attributed sample
- 206 messages
- Active dates
- 31 UTC dates
- Estimated median S/N
- -9.8 dB
- Estimated 10th-90th percentile
- -17 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 38, moderate (-15 to -9 dB) 81, strong (≥ -8 dB) 87.
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 EA4IAH 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 EA4IAH
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
- IN80 · 151 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,193 km (approx.)
- Last such locator decoded
- 2026-09-12 21:23 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 | EA4IAH S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 20:31 | 40m | - / -16 | DK7UY | -1 / - | 3 | ✓ Closing fragment |
| 09-19 20:29 | 40m | - / - | 9A1CCB | +5 / - | 3 | ✓ Closing fragment |
| 09-18 20:56 | 40m | -10 / - | JF4HDR | -16 / -20 | 5 | ✓ Closing observed |
| 09-18 19:40 | 40m | -18 / -19 | JS2TFX | -13 / -16 | 2 | Partial capture |
| 09-12 21:22 | 40m | -12 / - | R2FBW | - / - | 4 | Partial capture |
| 09-12 21:13 | 40m | -5 / - | HG8LXL | - / -19 | 2 | Partial capture |
| 09-12 21:11 | 40m | -8 / -11 | OH5KT | 0 / - | 3 | ✓ Closing observed |
| 09-07 19:31 | 40m | - / -12 | IU8RFW | -14 / - | 4 | ✓ Closing fragment |
| 09-06 20:54 | 40m | - / -6 | CT7AXN | -16 / - | 2 | ✓ Closing fragment |
| 09-06 19:54 | 40m | - / - | DL7ARV | +3 / - | 9 | Partial capture |
| 09-06 19:51 | 40m | - / -3 | DL9YNG | -4 / - | 3 | ✓ Closing fragment |
| 09-06 19:46 | 40m | - / - | DK8HC | -6 / - | 5 | Partial capture |
| 09-06 19:45 | 40m | - / - | EA3HMM | +2 / - | 3 | ✓ Closing fragment |
| 08-31 19:24 | 20m | +2 / - | UX7QV | - / -20 | 2 | Partial capture |
| 08-31 19:21 | 20m | +2 / - | UA2FHZ | - / - | 3 | Partial capture |
| 08-31 19:16 | 20m | -5 / - | EP2AES | - / - | 3 | Partial capture |
| 08-31 19:07 | 20m | -1 / - | EP2AES | - / - | 2 | Partial capture |
| 08-31 18:47 | 40m | -12 / - | 2E0LMA | - / -17 | 2 | Partial capture |
| 08-30 20:26 | 40m | -18 / -1 | DJ0MAB | +9 / - | 3 | ✓ Closing observed |
| 08-30 19:15 | 40m | -13 / - | YG2CLC | - / - | 2 | Partial capture |
| 08-30 19:10 | 40m | -10 / -14 | LX9UN | +6 / - | 3 | ✓ Closing observed |
| 08-30 18:51 | 40m | -13 / - | V51WH | - / -17 | 3 | ✓ Closing fragment |
| 08-29 22:33 | 40m | -8 / - | 8Q7PR | -13 / -15 | 4 | ✓ Closing observed |
| 08-26 20:12 | 20m | -7 / - | JA4MOK | - / +1 | 2 | ✓ Closing fragment |
| 08-26 20:01 | 20m | -8 / - | UN3QA | - / - | 2 | Partial capture |
| 08-26 19:57 | 20m | -11 / -16 | F4JZW | +4 / - | 5 | Partial capture |
| 08-26 19:48 | 20m | -8 / - | JA7DXX | - / - | 3 | Partial capture |
| 08-25 20:45 | 40m | -19 / -6 | R1ZBR | -5 / -6 | 5 | ✓ Full exchange observed |
| 08-25 20:41 | 40m | - / -5 | IZ8PPI | -15 / - | 3 | Partial capture |
| 08-25 20:41 | 40m | - / - | UA4FKT | +8 / - | 3 | Partial capture |
| 08-25 20:30 | 40m | -16 / - | HZ1TT | -10 / -6 | 5 | ✓ Closing observed |
| 08-25 20:28 | 40m | -17 / -5 | 4X1UF | -5 / -14 | 5 | ✓ Full exchange observed |
| 08-25 19:29 | 20m | -4 / - | 3A2MW | - / - | 2 | Partial capture |
| 08-25 18:59 | 20m | +5 / - | JA1PSS | - / - | 2 | Partial capture |
| 08-25 18:49 | 20m | -7 / - | 9K2MP | - / - | 2 | Partial capture |
| 08-25 18:47 | 20m | -9 / - | F5PBG | - / +9 | 2 | ✓ Closing fragment |
| 08-24 20:58 | 20m | -14 / - | HL5YI | - / -2 | 2 | Partial capture |
| 08-24 20:54 | 20m | -12 / - | HL5YI | - / - | 2 | Partial capture |
| 08-21 06:01 | 20m | 0 / - | IS0KNG | - / +3 | 2 | ✓ Closing fragment |
| 08-21 05:59 | 20m | -2 / - | VK1KAZ | - / - | 2 | Partial capture |
| 08-21 05:55 | 20m | +4 / -9 | VK2TLQ | -16 / - | 7 | Partial capture |
| 08-21 05:52 | 20m | -4 / - | ZL2NU | - / - | 2 | Partial capture |
| 08-20 21:52 | 20m | -8 / - | EA1N | - / - | 3 | Partial capture |
| 08-20 21:49 | 20m | +6 / - | TI2CC | - / - | 2 | Partial capture |
| 08-20 21:46 | 20m | +5 / - | R9WGG | - / - | 3 | Partial capture |
| 08-20 21:42 | 20m | 0 / - | BU2FW | - / -13 | 4 | ✓ Closing fragment |
| 08-20 21:39 | 20m | +3 / - | BV2NF | - / - | 2 | Partial capture |
| 08-20 21:35 | 20m | +3 / +3 | XU7O | -2 / -17 | 4 | ✓ Full exchange observed |
| 08-18 22:11 | 40m | -16 / - | 4X4ZP | - / - | 2 | Partial capture |
| 08-18 22:07 | 40m | -16 / -1 | PC2J | -15 / -6 | 3 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 191645 +9 950 EA4IAH E70SZ JN84 191145 -3 1293 EA4IAH RX3ASQ KO95 194000 -13 945 EA4IAH JS2TFX -19 194145 -18 944 JS2TFX EA4IAH R-16 205630 -12 944 JF4HDR EA4IAH R-20 205645 -16 712 EA4IAH JF4HDR RR73 205700 -7 944 JF4HDR EA4IAH R-20 (x3) 202930 +6 741 EA4IAH 9A1CCB JN85 (x3) 203130 -2 741 EA4IAH DK7UY R-16 (x3)
UTC dB Audio Message 200200 -5 926 UN3QA EA4IAH IN80 201215 -5 868 JA4MOK EA4IAH R+01 (x2) 202145 -12 868 JA8ABZ/P EA4IAH IN80 190700 -1 767 EP2AES EA4IAH IN80 (x5) 192145 +2 868 UA2FHZ EA4IAH IN80 (x3) 192345 -7 868 CQ EA4IAH IN80 192415 +3 868 UX7QV EA4IAH -20 (x2)
UTC dB Audio Message 190115 -5 1519 EA4IAH F4DUZ -07 (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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