SQ4KDF — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SQ4KDF, decoded by SO8OO in southeastern Poland. 74 FT8 messages attributed to this token as transmitter, on 80m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-08-01.
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 74 FT8 messages attributed to SQ4KDF as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). In this small sample, the estimated median decoder S/N was +7 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 74 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- +7 dB
- Estimated 10th-90th percentile
- +2 to +15 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 74.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with SQ4KDF in decoded directed-looking exchanges:
Most frequent locator attributed to SQ4KDF
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
- KO14 · 29 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 514 km (approx.)
- Last such locator decoded
- 2026-08-01 19:30 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 | SQ4KDF S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-01 19:31 | 80m | +14 / -7 | RW4HB | -5 / -8 | 5 | ✓ Full exchange observed |
| 08-01 19:30 | 80m | +10 / - | RL2F | -7 / +4 | 4 | ✓ Closing observed |
| 08-01 19:27 | 80m | - / +2 | DO3JP | -10 / - | 4 | ✓ Closing fragment |
| 08-01 19:27 | 80m | +13 / +6 | ER3ZW | +9 / - | 2 | Partial capture |
| 08-01 19:25 | 80m | +7 / - | SA6DST | -3 / +4 | 5 | ✓ Full exchange observed |
| 08-01 19:23 | 80m | +6 / -12 | OK1VKX | +9 / +5 | 5 | ✓ Full exchange observed |
| 08-01 19:21 | 80m | +6 / 0 | UA4FKT | +3 / +3 | 3 | Partial capture |
| 08-01 19:19 | 80m | +8 / - | SV9MBH | - / -22 | 2 | Partial capture |
| 08-01 19:16 | 80m | +7 / - | YO6DBA | - / -2 | 2 | Partial capture |
| 08-01 19:15 | 80m | +6 / - | HA3GX | -6 / -14 | 6 | ✓ Closing observed |
| 08-01 19:15 | 80m | - / - | SV9MBH | -20 / - | 2 | Partial capture |
| 07-24 15:21 | 10m | - / - | DG6TOM | +8 / - | 2 | Partial capture |
| 07-24 15:21 | 10m | - / - | PD1ADA | -16 / - | 4 | Partial capture |
| 07-24 14:39 | 10m | - / - | DO9MK | -10 / - | 2 | ✓ Closing fragment |
| 07-24 14:39 | 10m | - / - | DK3HV | +2 / - | 2 | Partial capture |
| 07-24 14:31 | 10m | - / - | DL6RS | -6 / - | 2 | Partial capture |
| 07-24 14:31 | 10m | - / +2 | F1PBZ | +10 / - | 3 | ✓ Closing fragment |
| 07-21 16:38 | 10m | - / - | PG9S | +1 / - | 2 | Partial capture |
| 07-09 07:41 | 10m | - / +10 | UR4QWW | -5 / - | 5 | ✓ Closing fragment |
| 07-09 07:41 | 10m | - / - | UR9QQ | -14 / - | 2 | Partial capture |
| 06-24 13:52 | 20m | - / -4 | DB1EF | -19 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 192715 +13 2030 ER3ZW SQ4KDF KO14 192715 -11 1003 SQ4KDF DO3JP JN49 (x3) 192830 +9 2031 SQ4KDF ER3ZW +06 192845 -9 1004 SQ4KDF DO3JP 73 193000 +8 1956 RL2F SQ4KDF KO14 (x2) 193045 -7 1956 SQ4KDF RL2F RR73 193100 +11 1956 RL2F SQ4KDF 73 193115 -13 699 SQ4KDF RW4HB LO53 193130 +13 1956 RW4HB SQ4KDF -08 193145 -3 698 SQ4KDF RW4HB R-07 193200 +16 1956 RW4HB SQ4KDF RRR 193215 +0 698 SQ4KDF RW4HB 73
UTC dB Audio Message 143100 -6 3041 SQ4KDF DL6RS JN48 143130 +11 442 SQ4KDF F1PBZ +02 143130 -7 3041 SQ4KDF DL6RS JN48 143330 +10 442 SQ4KDF F1PBZ RR73 143900 +4 440 SQ4KDF DK3HV JO31 143930 -9 725 SQ4KDF DO9MK JO31 143930 +1 441 SQ4KDF DK3HV JO31 144130 -11 725 SQ4KDF DO9MK 73 152100 -18 2048 SQ4KDF PD1ADA JO21 152100 +8 438 SQ4KDF DG6TOM JN58 152130 -12 2047 SQ4KDF PD1ADA JO21 152130 +8 439 SQ4KDF DG6TOM JN58 152200 +10 440 SQ4KDF DO1DMR JO40 152230 -16 2046 SQ4KDF PD1ADA JO21 (x2)
UTC dB Audio Message 135200 -17 1563 SQ4KDF DB1EF JO41 (x3) 142330 +3 2860 SQ4KDF IQ4JO JN63
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee