EC4TR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving EC4TR, decoded by SO8OO in southeastern Poland. 279 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-04 and 2026-09-13.
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 279 FT8 messages attributed to EC4TR as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (70%), followed by 80 m (27%) and 40 m (2%). Most decodes (51%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-09-13 23:46 UTC
Observed FT8 message patterns
- Attributed sample
- 279 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -21 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 67, moderate (-15 to -9 dB) 95, strong (≥ -8 dB) 117.
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 EC4TR 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 EC4TR
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 · 146 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,193 km (approx.)
- Last such locator decoded
- 2026-09-13 23:46 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 | EC4TR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-13 23:44 | 80m | -10 / - | CT2HZA | - / -15 | 2 | ✓ Closing fragment |
| 09-13 23:43 | 80m | -13 / -5 | DL1UDO | -8 / -8 | 4 | ✓ Full exchange observed |
| 09-13 23:41 | 80m | -10 / -10 | OK1AMF | +2 / -8 | 4 | ✓ Full exchange observed |
| 09-13 23:41 | 80m | - / - | RA6ZS | +3 / - | 2 | Partial capture |
| 09-13 23:39 | 80m | -11 / - | IZ0RTT | - / -19 | 2 | ✓ Closing fragment |
| 09-13 23:30 | 80m | -22 / - | W3DIY | - / - | 8 | Partial capture |
| 09-13 23:27 | 80m | - / -9 | OK1SI | +19 / - | 3 | ✓ Closing fragment |
| 09-13 23:23 | 80m | -24 / - | EA3GIW | -24 / -13 | 2 | ✓ Closing observed |
| 09-13 23:20 | 80m | -22 / -16 | DO5PY | -4 / -9 | 5 | ✓ Full exchange observed |
| 09-13 23:15 | 80m | - / -13 | DL5CK | +8 / - | 3 | ✓ Closing fragment |
| 09-13 23:05 | 80m | -23 / - | N1WI | - / -20 | 3 | Partial capture |
| 09-13 23:00 | 80m | - / -7 | G0BAZ | -12 / - | 2 | ✓ Closing fragment |
| 09-13 22:58 | 80m | -21 / -12 | M6XZD | -2 / -11 | 5 | ✓ Full exchange observed |
| 09-13 22:54 | 80m | -18 / -18 | DO9POL | -11 / -19 | 10 | ✓ Full exchange observed |
| 09-13 22:50 | 80m | - / -5 | F5NNN | 0 / - | 3 | ✓ Closing fragment |
| 09-13 22:49 | 80m | - / -13 | RA6ZS | +8 / - | 4 | Partial capture |
| 09-13 22:48 | 80m | - / -9 | OH6FSO | -4 / - | 3 | ✓ Closing fragment |
| 09-13 22:48 | 80m | - / - | R3XBV | 0 / - | 2 | Partial capture |
| 09-13 22:45 | 80m | - / -3 | EA8AJ | -15 / - | 2 | ✓ Closing fragment |
| 09-13 22:43 | 80m | - / +1 | EA5FQ | -6 / - | 2 | ✓ Closing fragment |
| 09-13 22:43 | 80m | - / - | OK1SI | +14 / - | 3 | Partial capture |
| 09-13 22:39 | 80m | - / -1 | M9KBN | -22 / - | 2 | ✓ Closing fragment |
| 09-13 22:36 | 80m | - / -4 | LA4NM | +5 / - | 2 | ✓ Closing fragment |
| 09-13 22:30 | 80m | - / -7 | SV9MBH | -6 / - | 3 | ✓ Closing fragment |
| 09-12 23:52 | 80m | -15 / - | ON4MAP | -24 / -16 | 2 | ✓ Closing observed |
| 09-12 23:48 | 80m | -17 / -1 | 4L7T | -20 / -3 | 7 | ✓ Full exchange observed |
| 09-12 23:37 | 80m | - / -13 | K4YT | -24 / - | 2 | Partial capture |
| 09-12 23:36 | 80m | - / -17 | G8OO | +1 / - | 3 | ✓ Closing fragment |
| 09-12 22:51 | 80m | -22 / - | EA3FR | - / -8 | 2 | ✓ Closing fragment |
| 09-12 22:47 | 80m | -20 / -7 | YO6LM | +5 / -7 | 5 | ✓ Full exchange observed |
| 09-12 22:45 | 80m | -21 / -9 | F1PBZ | +2 / +7 | 4 | ✓ Full exchange observed |
| 09-12 22:41 | 80m | -21 / +9 | 7X5CY | -14 / - | 5 | ✓ Full exchange observed |
| 09-12 22:37 | 40m | - / -6 | IU5VLR | -7 / - | 3 | ✓ Closing fragment |
| 09-12 22:32 | 40m | -13 / - | TN8GD | - / - | 2 | ✓ Closing fragment |
| 09-12 22:24 | 60m | - / -15 | IZ0MIT | -6 / - | 3 | ✓ Closing fragment |
| 09-05 22:19 | 160m | -18 / -7 | S52R | -3 / -8 | 5 | ✓ Full exchange observed |
| 09-05 22:18 | 160m | - / +1 | EA5J | -14 / - | 2 | ✓ Closing fragment |
| 08-27 11:47 | 10m | - / - | PD0PWH | -7 / - | 3 | ✓ Closing fragment |
| 08-17 18:41 | 20m | +5 / - | DL1R | - / - | 3 | Partial capture |
| 08-17 18:28 | 20m | 0 / -6 | JA4FKX | -6 / +4 | 5 | ✓ Full exchange observed |
| 08-17 18:27 | 20m | -1 / - | OE9NET | - / -21 | 3 | ✓ Closing fragment |
| 08-17 18:25 | 20m | -4 / - | SP5KG | - / 0 | 2 | ✓ Closing fragment |
| 08-17 18:22 | 20m | 0 / - | BI6AN | - / -11 | 2 | ✓ Closing fragment |
| 08-17 18:20 | 20m | -2 / - | DL7KI | - / +9 | 2 | ✓ Closing fragment |
| 08-17 18:16 | 20m | -2 / - | PD3LKN | - / +2 | 2 | ✓ Closing fragment |
| 08-17 18:14 | 20m | -3 / - | OZ7CL | - / +4 | 3 | ✓ Closing fragment |
| 08-17 18:12 | 20m | -2 / - | DL2KAC | - / -5 | 2 | ✓ Closing fragment |
| 08-17 18:10 | 20m | 0 / +2 | F4ACR | -4 / -8 | 5 | ✓ Full exchange observed |
| 08-17 18:09 | 20m | -4 / - | R9AL | - / -25 | 3 | ✓ Closing fragment |
| 08-17 18:08 | 20m | 0 / - | YL2KF | - / +6 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 234130 +3 2570 EC4TR OK1AMF -10 234145 -10 754 OK1AMF EC4TR R-08 234200 +0 1569 EC4TR OK1AMF RR73 234215 -10 755 OK1AMF EC4TR 73 234245 -12 754 CQ EC4TR IN80 234300 -13 1330 EC4TR DL1UDO JO31 234315 -13 754 DL1UDO EC4TR -08 234330 +0 1330 EC4TR DL1UDO R-05 (x2) 234415 -14 754 CQ EC4TR IN80 234445 -11 754 CT2HZA EC4TR -15 (x2) 234545 -15 754 CQ EC4TR IN80 (x3)
UTC dB Audio Message 175045 -17 2316 EC4TR OZ9FF RR73 175215 -10 1933 EC4TR UA4FKT LO23 180745 -12 2217 EC4TR LY8O -06 (x2) 225045 -17 1035 VK6KA EC4TR IN80 091745 -18 1788 EC4TR DA1ST 73 091915 -19 1995 EC4TR PA7ZZ JO22 223215 -13 1928 TN8GD EC4TR IN80 (x2) 223545 -15 1928 IN3LHF EC4TR 73 223615 -16 1928 CQ EC4TR IN80 a1 (x2) 223730 -11 1535 EC4TR IU5VLR JN53 (x3)
UTC dB Audio Message 222445 -7 2421 EC4TR IZ0MIT JN61 (x3)
UTC dB Audio Message 221800 -14 1196 EC4TR EA5J +01 (x2) 221945 -14 1100 S52R EC4TR IN80 222000 +0 1098 EC4TR S52R -07 222015 -21 1100 S52R EC4TR R-08 222030 -4 1098 EC4TR S52R RR73 (x2)
UTC dB Audio Message 090700 -15 1162 EC4TR OD5JL -04 091630 -7 2374 EC4TR RN6MA +04 (x3) 091830 -13 1212 EC4TR UA3QNA -12 (x2) 095915 -9 656 EC4TR SV2CLJ KN10 (x2) 081545 -17 1331 EC4TR RN4LP -23 (x3) 082115 -24 2108 RQ7R EC4TR R+07 114730 -6 753 EC4TR PD0PWH JO21 (x3)
UTC dB Audio Message 182830 +0 969 OE9NET EC4TR RR73 182845 -6 970 EC4TR JA4FKX PM64 182900 +0 969 JA4FKX EC4TR +04 182915 -8 970 EC4TR JA4FKX R-06 (x2) 183215 -11 968 EC4TR DL4ZF 73 183230 -10 969 CQ EC4TR IN80 183315 -8 2743 EC4TR IW5ALZ JN53 183700 -12 969 DL1R EC4TR +23 (x4) 184330 +3 969 CQ EC4TR IN80 184345 -11 974 EC4TR PG1N JO21 232415 -14 1075 LU7DK EC4TR R+03
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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