F4JDS — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving F4JDS, decoded by SO8OO in southeastern Poland. 121 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-25.
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 121 FT8 messages attributed to F4JDS as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (93%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (94%); the estimated median was -4 dB.
Overview
Observed FT8 message patterns
- Attributed sample
- 121 messages
- Active dates
- 3 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -8 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 114.
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 F4JDS 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 F4JDS
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
- JN28 · 71 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,227 km (approx.)
- Last such locator decoded
- 2026-08-25 07:06 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 | F4JDS S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-24 19:13 | 40m | - / -8 | E75D | -4 / - | 2 | Partial capture |
| 08-24 19:10 | 40m | +4 / -13 | DB1AD | -4 / - | 5 | ✓ Closing observed |
| 08-24 19:04 | 40m | +3 / -7 | SP4MPH | +3 / -11 | 5 | ✓ Full exchange observed |
| 08-24 19:01 | 40m | +4 / - | IK3/UY7LA | - / 0 | 3 | Partial capture |
| 08-24 18:57 | 40m | -1 / -1 | DL9YNG | -2 / -7 | 6 | ✓ Full exchange observed |
| 08-24 18:55 | 40m | 0 / - | DL5FCE | +6 / -2 | 5 | ✓ Full exchange observed |
| 08-24 18:52 | 40m | -1 / +4 | IN3IZQ | -14 / -17 | 4 | ✓ Full exchange observed |
| 08-24 18:50 | 40m | - / -4 | SV8NAJ | -17 / - | 3 | Partial capture |
| 08-24 18:50 | 40m | - / - | HA5AZD | +12 / - | 2 | Partial capture |
| 08-24 18:49 | 40m | - / -1 | RN6MA | +10 / - | 3 | Partial capture |
| 08-24 16:22 | 40m | -3 / - | <...> | - / 0 | 3 | Partial capture |
| 08-24 16:18 | 40m | -4 / +10 | DK8AP | -12 / -17 | 5 | ✓ Full exchange observed |
| 08-24 16:14 | 40m | -4 / - | <...> | - / 0 | 3 | Partial capture |
| 08-24 16:11 | 40m | -2 / - | M8KWV | - / -9 | 3 | ✓ Closing fragment |
| 08-24 16:06 | 40m | -5 / +6 | DF6SA | -8 / -1 | 8 | ✓ Full exchange observed |
| 08-24 16:04 | 40m | -5 / - | DK5FN | - / -5 | 7 | ✓ Closing fragment |
| 08-24 16:01 | 40m | -6 / -4 | F1PBZ | -11 / - | 4 | ✓ Full exchange observed |
| 08-24 15:59 | 40m | -6 / - | IZ8PPI | - / -16 | 2 | ✓ Closing fragment |
| 08-24 15:55 | 40m | -4 / -2 | F4FSY | -17 / -1 | 4 | ✓ Closing observed |
| 08-24 15:51 | 40m | -7 / +8 | DH4YM | -18 / -11 | 4 | Partial capture |
| 08-24 15:49 | 40m | -6 / - | DC9GT | - / -9 | 2 | ✓ Closing fragment |
| 08-24 15:46 | 40m | -8 / - | IW2MLJ | - / -1 | 2 | ✓ Closing fragment |
| 08-24 15:44 | 40m | -5 / - | F1IQH | - / -5 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 190730 +0 502 CQ F4JDS JN28 (x3) 191015 -6 508 F4JDS DB1AD R-13 191030 +7 501 DB1AD F4JDS RR73 191045 -3 508 F4JDS DB1AD R-13 191100 +1 501 DB1AD F4JDS RR73 191115 -3 508 F4JDS DB1AD 73 191245 -1 501 F4JDS PD2MV 73 191300 +6 500 CQ F4JDS JN28 191315 -5 501 F4JDS SP7TF -10 191315 -5 1485 F4JDS E75D -08 191330 +6 500 CQ F4JDS JN28 191345 -4 1485 F4JDS E75D -11 070645 -11 508 CQ F4JDS JN28
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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