ER5AR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving ER5AR, decoded by SO8OO in southeastern Poland. 111 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-16.
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 111 FT8 messages attributed to ER5AR as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (56%), followed by 20 m (23%) and 40 m (19%). Several six-hour UTC windows tied for the largest share (69%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.
Overview
Bands
Last attributed message: 2026-09-16 14:04 UTC
Observed FT8 message patterns
- Attributed sample
- 111 messages
- Active dates
- 14 UTC dates
- Estimated median S/N
- -7 dB
- Estimated 10th-90th percentile
- -15 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 36, strong (≥ -8 dB) 65.
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 ER5AR 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 ER5AR
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
- KN45 · 87 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 730 km (approx.)
- Last such locator decoded
- 2026-09-16 14:04 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 | ER5AR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-16 14:05 | 40m | - / - | 9A4ZM | +2 / - | 2 | Partial capture |
| 09-16 14:04 | 40m | +6 / - | OL900JAR | - / -11 | 2 | Partial capture |
| 09-16 06:53 | 40m | - / - | DJ0MAB | -2 / - | 3 | Partial capture |
| 09-16 06:52 | 40m | +2 / - | II9IAGM | - / -6 | 2 | Partial capture |
| 09-15 18:22 | 80m | 0 / - | EH3ST | - / - | 4 | Partial capture |
| 09-15 18:22 | 80m | -2 / -13 | DK7ZT | +4 / -15 | 5 | Partial capture |
| 09-15 18:20 | 80m | 0 / -20 | II8IHBC | +1 / -17 | 3 | Partial capture |
| 09-15 18:08 | 80m | - / -13 | YO5QDI | +9 / - | 6 | ✓ Closing fragment |
| 09-15 16:59 | 80m | -18 / - | JA8KAW | - / - | 2 | Partial capture |
| 09-13 18:43 | 80m | - / - | OK4FX | +13 / - | 2 | Partial capture |
| 09-13 18:41 | 80m | -11 / - | G4ZFJ | - / - | 4 | Partial capture |
| 09-13 18:38 | 80m | - / - | RK6OQ | +8 / - | 2 | Partial capture |
| 09-13 18:32 | 80m | - / - | RO2X | +8 / - | 3 | Partial capture |
| 09-13 18:31 | 80m | -8 / -17 | LX1JH | +12 / - | 6 | ✓ Closing observed |
| 09-13 18:20 | 80m | - / -22 | DK7ZT | +6 / - | 4 | Partial capture |
| 09-13 18:19 | 80m | - / - | UA4FKT | +6 / - | 3 | Partial capture |
| 09-13 18:18 | 80m | -9 / -13 | LA9GX | +8 / -11 | 5 | ✓ Full exchange observed |
| 09-13 18:13 | 80m | -12 / -20 | EH3ST | -15 / -17 | 10 | Partial capture |
| 09-13 18:06 | 80m | -6 / - | ON4IQ | - / - | 3 | Partial capture |
| 09-13 16:53 | 80m | -10 / - | R9SAP | - / - | 2 | Partial capture |
| 09-11 18:01 | 80m | -6 / - | SM7OYP | +10 / -16 | 3 | ✓ Closing observed |
| 09-11 16:55 | 80m | -11 / - | RW9AW | - / - | 3 | Partial capture |
| 09-09 18:23 | 80m | -13 / -25 | PA3ARI | +5 / - | 3 | ✓ Closing observed |
| 09-09 18:16 | 80m | -2 / -22 | HB9AZZ | +10 / -8 | 5 | ✓ Full exchange observed |
| 09-09 18:03 | 80m | -14 / -13 | YT2ZE | -6 / - | 3 | ✓ Closing observed |
| 09-09 17:57 | 80m | - / - | EW8CW | +2 / - | 4 | Partial capture |
| 09-09 17:56 | 80m | -13 / -18 | RA2FU | -6 / - | 6 | Partial capture |
| 09-09 17:54 | 80m | -14 / - | F5RRS | - / - | 2 | Partial capture |
| 09-09 17:52 | 80m | -3 / - | UN7LEW | - / - | 3 | Partial capture |
| 09-09 17:46 | 80m | -11 / - | 9A4ZM | -2 / -9 | 3 | Partial capture |
| 09-09 17:43 | 80m | - / - | UX5UO | 0 / - | 3 | Partial capture |
| 09-09 17:42 | 80m | -15 / -9 | OM1II | +10 / 0 | 4 | ✓ Full exchange observed |
| 09-03 16:26 | 80m | -12 / - | RM8W | - / - | 2 | Partial capture |
| 09-03 16:24 | 80m | -5 / - | RA9CUU | - / - | 3 | Partial capture |
| 09-03 16:17 | 80m | -9 / -13 | LY7M | +1 / -2 | 6 | ✓ Full exchange observed |
| 08-27 15:31 | 40m | +3 / - | VJ6X | - / - | 3 | Partial capture |
| 08-21 07:04 | 20m | +4 / - | OJ0YL | - / -10 | 10 | Partial capture |
| 08-20 16:52 | 80m | -14 / - | RC9F | - / - | 3 | Partial capture |
| 08-20 15:45 | 20m | +4 / - | TJ1GD | - / - | 2 | Partial capture |
| 08-20 15:38 | 20m | - / -22 | RL1B | -5 / - | 2 | Partial capture |
| 08-20 15:35 | 20m | +1 / - | XU7O | - / - | 3 | Partial capture |
| 08-18 07:11 | 10m | -10 / - | FK8HA | - / - | 2 | Partial capture |
| 08-06 15:43 | 20m | -6 / - | 9V1SH | - / - | 4 | Partial capture |
| 07-23 15:09 | 10m | - / -9 | R2EA | -2 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 153145 +4 2575 VJ6X ER5AR KN45 (x3) 065215 +3 2653 II9IAGM ER5AR KN45 (x2) 065330 +2 2654 ER5AR DJ0MAB JN49 (x3) 140415 +6 2476 OL900JAR ER5AR KN45 (x2) 140530 +5 2472 ER5AR 9A4ZM JN86 (x2)
UTC dB Audio Message 181000 +7 1951 ER5AR YO5QDI KN17 (x3) 182015 -2 2617 II8IHBC ER5AR KN45 182030 +1 2057 ER5AR II8IHBC -20 182045 +2 2617 II8IHBC ER5AR R-17 182200 +4 1114 ER5AR DK7ZT -13 182215 +3 2617 EH3ST ER5AR KN45 (x2) 182300 +9 1114 ER5AR DK7ZT -13 182315 -1 2617 EH3ST ER5AR KN45 182330 +4 1113 ER5AR DK7ZT -13 182345 -3 2617 EH3ST ER5AR KN45 182400 +0 1114 ER5AR DK7ZT -13 182445 -2 2617 DK7ZT ER5AR R-15
UTC dB Audio Message 153900 -5 2732 ER5AR RL1B -14 154515 +2 420 TJ1GD ER5AR KN45 (x3) 070415 +3 2190 OJ0YL ER5AR KN45 (x10) 070930 -11 1803 ER5AR RR73; RC5F <...> -08
UTC dB Audio Message 150915 -2 2567 ER5AR R2EA -09 (x2) 071130 -8 2590 FK8HA ER5AR KN45 (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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