EC5K — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EC5K, decoded by SO8OO in southeastern Poland. 426 FT8 messages attributed to this token as transmitter, on 80m, 20m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-07-13 and 2026-09-03.
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 426 FT8 messages attributed to EC5K as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (92%), followed by 10 m (6%) and 80 m (2%). Several six-hour UTC windows tied for the largest share (94%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was +3 dB.
Overview
Bands
Last attributed message: 2026-09-03 22:24 UTC
Observed FT8 message patterns
- Attributed sample
- 426 messages
- Active dates
- 13 UTC dates
- Estimated median S/N
- +3 dB
- Estimated 10th-90th percentile
- -14 to +9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 44, strong (≥ -8 dB) 354.
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 EC5K 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 EC5K
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
- IM99 · 207 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,129 km (approx.)
- Last such locator decoded
- 2026-09-03 22:24 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 | EC5K S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-03 22:23 | 80m | -11 / - | RI1FJL | - / - | 3 | Partial capture |
| 09-03 22:07 | 80m | -12 / - | RI1FJL | - / - | 4 | Partial capture |
| 09-03 22:02 | 80m | -12 / - | RI1FJL | - / - | 2 | Partial capture |
| 08-27 11:43 | 10m | - / +9 | DO1OAS | -20 / - | 2 | Partial capture |
| 08-13 22:00 | 20m | -18 / - | KR4NIN | - / -17 | 3 | ✓ Closing fragment |
| 08-13 21:59 | 20m | -16 / - | K4YT | - / -13 | 2 | Partial capture |
| 08-13 21:58 | 20m | -16 / - | KE2CUR | - / -11 | 2 | ✓ Closing fragment |
| 08-13 21:56 | 20m | -15 / - | R2FAQ | - / -15 | 2 | ✓ Closing fragment |
| 08-13 21:54 | 20m | -18 / - | PD0RCQ | - / -14 | 2 | ✓ Closing fragment |
| 08-13 21:52 | 20m | -14 / - | K6UMO | - / -16 | 2 | ✓ Closing fragment |
| 08-13 21:51 | 20m | -18 / - | N1QJ | - / -20 | 2 | ✓ Closing fragment |
| 08-13 21:49 | 20m | -14 / - | KJ5PTH | - / -10 | 2 | ✓ Closing fragment |
| 08-07 22:16 | 20m | 0 / - | BA4IHB | - / -16 | 2 | ✓ Closing fragment |
| 08-07 22:08 | 20m | +2 / - | JA5ROH/P | - / -5 | 2 | ✓ Closing fragment |
| 08-07 22:04 | 20m | +2 / - | BA3QIQ | - / -15 | 2 | ✓ Closing fragment |
| 08-03 22:47 | 20m | -20 / - | BA3QIQ | - / -13 | 2 | Partial capture |
| 08-03 22:44 | 20m | -18 / - | JH3UHG | - / -12 | 2 | ✓ Closing fragment |
| 08-03 22:42 | 20m | -19 / - | JA0PE | - / -10 | 2 | ✓ Closing fragment |
| 08-02 21:23 | 20m | +10 / - | HL5QY | - / -12 | 2 | ✓ Closing fragment |
| 08-02 21:21 | 20m | +8 / - | HL1LUA | - / -13 | 2 | ✓ Closing fragment |
| 08-02 07:58 | 10m | -12 / - | JA1ADU | - / -17 | 2 | ✓ Closing fragment |
| 08-02 07:53 | 10m | -12 / - | BX4AP | - / -12 | 2 | ✓ Closing fragment |
| 08-02 07:51 | 10m | -10 / - | JO7MDA | - / -12 | 2 | ✓ Closing fragment |
| 08-02 07:47 | 10m | -7 / - | JJ1KZZ | - / -12 | 2 | ✓ Closing fragment |
| 07-31 21:25 | 20m | +6 / - | JH7XPW | - / -8 | 2 | ✓ Closing fragment |
| 07-31 21:23 | 20m | +6 / - | BI4XDT | - / -7 | 2 | ✓ Closing fragment |
| 07-31 21:23 | 20m | - / - | G7RCQ | -15 / - | 4 | Partial capture |
| 07-31 21:21 | 20m | +6 / - | JH1CTV | - / -15 | 3 | ✓ Closing fragment |
| 07-31 21:17 | 20m | +5 / - | BH4GUO | - / -6 | 3 | ✓ Closing fragment |
| 07-31 21:17 | 20m | - / - | IW1PVB | -19 / - | 2 | Partial capture |
| 07-31 21:13 | 20m | +4 / - | BG8HNC | - / -13 | 2 | ✓ Closing fragment |
| 07-31 21:12 | 20m | +4 / - | BH4ECL | - / -11 | 2 | ✓ Closing fragment |
| 07-31 21:10 | 20m | - / - | RZ4FWA | -7 / - | 3 | Partial capture |
| 07-28 21:13 | 20m | - / - | DL6KA | -10 / - | 5 | Partial capture |
| 07-28 21:12 | 20m | +3 / - | JH1IMU/P | - / -13 | 3 | ✓ Closing fragment |
| 07-28 21:03 | 20m | - / -9 | IS0KNG | -10 / - | 11 | Partial capture |
| 07-27 20:24 | 20m | +8 / - | BA6KC | - / -15 | 2 | ✓ Closing fragment |
| 07-23 06:40 | 20m | - / - | PC2J | -24 / - | 2 | Partial capture |
| 07-23 06:29 | 20m | - / -5 | F1ODM | -19 / - | 3 | Partial capture |
| 07-22 21:29 | 20m | +11 / - | JA0RUG | - / -10 | 2 | ✓ Closing fragment |
| 07-22 21:26 | 20m | +8 / - | DS2MGT | - / -21 | 2 | Partial capture |
| 07-22 21:23 | 20m | +6 / - | BH4HTD | - / -20 | 2 | ✓ Closing fragment |
| 07-22 21:21 | 20m | +10 / - | JP6VSZ | - / -14 | 2 | ✓ Closing fragment |
| 07-22 20:07 | 20m | -2 / - | JE1LFX | - / -15 | 2 | Partial capture |
| 07-22 20:05 | 20m | -3 / - | JH5AVM | - / - | 2 | ✓ Closing fragment |
| 07-22 20:01 | 20m | -13 / - | JH5AVM | - / -14 | 2 | Partial capture |
| 07-17 23:03 | 20m | -4 / - | DS3AEL | - / -16 | 2 | Partial capture |
| 07-17 23:01 | 20m | -6 / - | BG4BKL | - / -19 | 2 | ✓ Closing fragment |
| 07-17 22:57 | 20m | -7 / - | JR2SHA | - / -13 | 2 | ✓ Closing fragment |
| 07-17 21:49 | 20m | +1 / - | JA3JKK | - / -15 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 220245 -15 1632 RI1FJL EC5K IM99 (x9)
UTC dB Audio Message 075445 -12 1191 CQ AS EC5K IM99 075545 -14 1191 R9SR EC5K RR73 075615 -15 1191 CQ AS EC5K IM99 (x3) 075815 -9 1191 JA1ADU EC5K R-17 (x2) 075915 -16 1191 CQ AS EC5K IM99 (x2) 080115 -11 1191 BU2GU EC5K -15 210745 -24 1877 EC5K CS7BDU R-14 114130 -17 1679 EC5K PD0PWH JO21 114230 -14 1678 EC5K PD1RMB JO32 114315 -18 1677 EC5K DO1OAS +09 (x2)
UTC dB Audio Message 215400 -13 1558 CQ EC5K IM99 215430 -17 1558 PD0RCQ EC5K -14 (x2) 215600 -11 1558 CQ EC5K IM99 215630 -11 1558 R2FAQ EC5K -15 (x2) 215730 -19 1558 CQ EC5K IM99 a1 215800 -13 1558 KE2CUR EC5K -11 (x2) 215900 -15 1559 K4YT EC5K -13 (x2) 220000 -12 1559 KR4NIN EC5K -17 (x3) 220200 -17 1558 CQ EC5K IM99
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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