I4TDK — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving I4TDK, decoded by SO8OO in southeastern Poland. 67 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-16 and 2026-08-30.
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 67 FT8 messages attributed to I4TDK as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (72%), followed by 40 m (28%). Several six-hour UTC windows tied for the largest share (84%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (85%); the estimated median was +7 dB.
Overview
Bands
Last attributed message: 2026-08-30 21:01 UTC
Observed FT8 message patterns
- Attributed sample
- 67 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- +7 dB
- Estimated 10th-90th percentile
- -13 to +14 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 57.
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 I4TDK 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 I4TDK
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
- JN54 · 13 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,013 km (approx.)
- Last such locator decoded
- 2026-08-30 16:45 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 | I4TDK S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-30 21:07 | 40m | - / - | ZA/IK3BNO | -3 / - | 3 | Partial capture |
| 08-30 21:03 | 40m | - / - | UB3AMO | -6 / - | 2 | Partial capture |
| 08-30 20:58 | 40m | +4 / - | HL2ADO | - / -11 | 3 | ✓ Closing fragment |
| 08-30 20:55 | 40m | +6 / - | 4O4DB | - / -15 | 3 | Partial capture |
| 08-30 20:54 | 40m | +14 / - | HL2ADO | - / -13 | 2 | Partial capture |
| 08-30 20:51 | 40m | +7 / - | TN8GD | - / -14 | 2 | ✓ Closing fragment |
| 08-30 19:06 | 20m | +13 / - | BU2FW | - / -15 | 2 | ✓ Closing fragment |
| 08-30 19:03 | 20m | +11 / - | YC2YIZ | - / -11 | 3 | ✓ Closing fragment |
| 08-30 19:01 | 20m | +11 / - | OZ/KD0NDU | - / -7 | 3 | Partial capture |
| 08-30 18:59 | 20m | +10 / - | Z31PM | - / -22 | 3 | Partial capture |
| 08-30 18:58 | 20m | +12 / - | BG7BVP | - / -14 | 2 | ✓ Closing fragment |
| 08-30 18:57 | 20m | +10 / - | E72T | -7 / +1 | 3 | ✓ Full exchange observed |
| 08-30 16:52 | 40m | -3 / - | VJ6X | - / -14 | 2 | Partial capture |
| 08-30 16:47 | 40m | +1 / - | VJ6X | - / -13 | 3 | Partial capture |
| 08-30 16:45 | 40m | -3 / - | IK2ZJR | -6 / 0 | 4 | Partial capture |
| 08-30 16:31 | 20m | +14 / - | EX7DY | - / - | 4 | ✓ Closing fragment |
| 08-30 16:29 | 20m | +13 / - | RI1FJL | - / -13 | 2 | Partial capture |
| 08-30 16:26 | 20m | +12 / +2 | EP2AES | -9 / -5 | 7 | ✓ Full exchange observed |
| 08-30 16:24 | 20m | +6 / -9 | BG7BMG | -13 / -14 | 3 | ✓ Full exchange observed |
| 08-30 16:23 | 20m | +9 / -12 | BG7BVP | -8 / -13 | 7 | Partial capture |
| 08-30 16:22 | 20m | +6 / - | BG0FQU | - / -20 | 2 | ✓ Closing fragment |
| 08-30 16:22 | 20m | - / - | PD1HPB | -11 / - | 6 | Partial capture |
| 08-30 16:21 | 20m | -2 / - | VU2FR | - / -6 | 2 | ✓ Closing fragment |
| 08-30 15:48 | 20m | -23 / - | UA2FFD | - / - | 2 | Partial capture |
| 08-30 15:10 | 20m | - / -15 | PD3LKN | -4 / - | 2 | Partial capture |
| 08-29 10:10 | 20m | -12 / - | CU3HN | -8 / - | 2 | ✓ Closing observed |
| 08-29 10:06 | 20m | -8 / - | CU3HN | - / - | 2 | Partial capture |
| 08-29 10:00 | 20m | - / -22 | CT3MD | -5 / - | 7 | Partial capture |
| 08-29 09:52 | 20m | - / -16 | YO9PH | 0 / - | 2 | ✓ Closing fragment |
| 08-24 15:57 | 40m | - / -3 | DJ0MAB | -10 / - | 3 | ✓ Closing fragment |
| 08-16 17:18 | 20m | - / -7 | UT7UJ | +8 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 205115 +8 1539 TN8GD I4TDK -14 (x2) 205400 +13 1539 HL2ADO I4TDK -13 (x2) 205515 +3 1539 4O4DB I4TDK -15 (x3) 205830 +5 1539 HL2ADO I4TDK -11 (x3) 210345 -9 1539 I4TDK UB3AMO KO85 (x2) 210730 -5 543 I4TDK ZA/IK3BNO R+11 (x3)
UTC dB Audio Message 185815 +10 1577 E72T I4TDK RR73 185830 -4 2159 I4TDK RR73; RW9WC <...> +04 185845 +12 1577 BG7BVP I4TDK -14 (x2) 185945 +9 1577 Z31PM I4TDK -22 (x3) 190115 +10 1577 OZ/KD0NDU I4TDK -07 (x3) 190315 +11 1577 YC2YIZ I4TDK -11 (x3) 190630 +11 1577 BU2FW I4TDK -15 (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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