DF4SW — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving DF4SW, decoded by SO8OO in southeastern Poland. 221 related FT8 messages, 22 CQ messages, observed on 40m, 20m, 10m, across 27 UTC dates. Heard between 2026-06-18 and 2026-08-23.
These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.
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Overview
Frequent QSO partners observed at SO8OO
Stations DF4SW worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by DF4SW
Approximate centre of JO31, decoded 2026-08-20 20:02 UTC. A transmitted locator is not proof of the operator's permanent location.
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 | DF4SW S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-23 20:45 | 40m | - / -13 | F1IQH | -7 / - | 4 | ✓ Closing fragment |
| 08-20 20:01 | 20m | -20 / - | IS0KNG | - / - | 2 | Partial capture |
| 08-20 15:27 | 20m | -14 / -6 | UA4FEN | +2 / 0 | 3 | ✓ Full exchange observed |
| 08-20 07:10 | 20m | - / +1 | YO4NT | +16 / - | 2 | Partial capture |
| 08-20 07:09 | 20m | -12 / - | IK4TVP | - / +1 | 2 | ✓ Closing fragment |
| 08-14 18:20 | 20m | - / -1 | 2W0YOX | -6 / - | 2 | Partial capture |
| 08-14 18:05 | 20m | - / -19 | CT1BFP | -23 / - | 5 | Partial capture |
| 08-14 18:02 | 20m | - / - | EA3GXK | -15 / - | 7 | Partial capture |
| 08-13 19:04 | 20m | -18 / - | IZ0ZIP | -18 / -8 | 2 | ✓ Closing observed |
| 07-16 18:48 | 20m | - / - | LZ3CB | +8 / - | 4 | Partial capture |
| 07-15 12:50 | 20m | -11 / - | IK4LZH | - / - | 2 | ✓ Closing fragment |
| 07-13 10:27 | 10m | - / -11 | E75W | -8 / - | 2 | ✓ Closing fragment |
| 07-11 21:19 | 20m | - / - | EB5AFK | -9 / - | 5 | Partial capture |
| 07-11 16:34 | 20m | -12 / - | 5B4ARQ | - / -21 | 2 | Partial capture |
| 07-10 10:29 | 20m | - / -24 | DH1FA | -17 / - | 4 | ✓ Closing fragment |
| 07-09 19:29 | 20m | - / -11 | EA1A | 0 / - | 2 | ✓ Closing fragment |
| 07-09 10:47 | 20m | - / - | F5IXN | -9 / - | 3 | Partial capture |
| 07-07 18:02 | 20m | - / +6 | DG5LP | -13 / - | 3 | ✓ Closing fragment |
| 07-05 09:09 | 20m | - / -12 | DF3IS | -3 / - | 5 | ✓ Closing fragment |
| 07-04 20:02 | 20m | - / -20 | PI4DX | -6 / - | 2 | ✓ Closing fragment |
| 07-04 19:15 | 20m | - / -4 | OE5AMR | +1 / - | 2 | ✓ Closing fragment |
| 07-04 18:43 | 20m | -12 / - | A61CK | - / - | 3 | Partial capture |
| 07-04 09:06 | 20m | - / -20 | IK4RVY | -17 / - | 5 | ✓ Closing fragment |
| 07-04 09:03 | 20m | - / -13 | II0WWA | -2 / - | 2 | ✓ Closing fragment |
| 07-03 12:49 | 20m | - / -18 | G1LQT | -18 / - | 2 | Partial capture |
| 06-30 18:09 | 20m | - / -7 | LZ1ZF | -6 / - | 2 | ✓ Closing fragment |
| 06-29 17:57 | 20m | - / -6 | II5WWA | 0 / - | 2 | ✓ Closing fragment |
| 06-28 22:18 | 20m | - / -6 | II1NAP | -9 / - | 3 | ✓ Closing fragment |
| 06-28 21:31 | 20m | - / - | IZ1HJU | -13 / - | 3 | Partial capture |
| 06-28 21:29 | 20m | - / -10 | DL3RAJ | -7 / - | 2 | ✓ Closing fragment |
| 06-28 21:24 | 20m | - / - | DL3RAJ | -9 / - | 6 | Partial capture |
| 06-28 19:49 | 20m | - / -7 | HA7TM | +1 / - | 5 | ✓ Closing fragment |
| 06-28 19:47 | 20m | - / -10 | OE6TNO | -6 / - | 3 | ✓ Closing fragment |
| 06-28 19:40 | 20m | - / - | PD1HBL | -13 / - | 4 | Partial capture |
| 06-28 18:26 | 20m | - / -20 | IZ2DPX | +1 / - | 2 | ✓ Closing fragment |
| 06-28 15:31 | 20m | - / -13 | R9FE | -17 / - | 2 | ✓ Closing fragment |
| 06-28 13:12 | 20m | - / -8 | OK1PSV | -13 / - | 3 | ✓ Closing fragment |
| 06-27 19:51 | 20m | - / -1 | OE5PEN | -9 / - | 4 | ✓ Closing fragment |
| 06-27 19:46 | 20m | - / -5 | M0BEW | +1 / - | 2 | ✓ Closing fragment |
| 06-26 18:02 | 20m | - / -9 | OK1JIR | -9 / - | 3 | ✓ Closing fragment |
| 06-24 08:36 | 20m | - / -11 | YT3PL | -16 / - | 3 | Partial capture |
| 06-24 07:58 | 20m | - / -19 | MI7RDK | -8 / - | 2 | Partial capture |
| 06-24 07:57 | 20m | - / - | EA5ET | -14 / - | 2 | ✓ Closing fragment |
| 06-24 07:43 | 20m | - / +3 | MW7RHR | -16 / - | 3 | Partial capture |
| 06-24 06:42 | 20m | - / -10 | F5IXN | -6 / - | 4 | Partial capture |
| 06-24 06:18 | 20m | - / -20 | UR7VU | -16 / - | 3 | ✓ Closing fragment |
| 06-24 06:11 | 20m | - / -16 | RX3ASQ | -14 / - | 3 | ✓ Closing fragment |
| 06-23 18:11 | 20m | - / -13 | RY7G | -12 / - | 4 | ✓ Closing fragment |
| 06-23 17:45 | 20m | - / 0 | LZ3CB | -12 / - | 2 | Partial capture |
| 06-22 09:37 | 20m | - / -9 | DL8WEM | -18 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 204530 -8 687 DF4SW F1IQH JN27 (x4)
UTC dB Audio Message 070730 -16 2476 CQ DF4SW JO31 (x4) 070930 -13 2476 IK4TVP DF4SW R+01 (x2) 071015 +12 655 DF4SW YO4NT +01 (x2) 152700 -13 2620 CQ DF4SW JO31 152715 +0 2620 DF4SW UA4FEN -06 152730 -14 2620 UA4FEN DF4SW R+00 152745 +5 2620 DF4SW UA4FEN RR73 153330 -11 2620 CQ DF4SW JO31 200145 -20 1699 IS0KNG DF4SW JO31 (x2)
UTC dB Audio Message 102700 -12 2546 DF4SW E75W -11 (x2)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.