RZ4M — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RZ4M, decoded by SO8OO in southeastern Poland. 592 related FT8 messages, 7 CQ messages, observed on 160m, 80m, 40m, 20m, 10m, across 51 UTC dates. Heard between 2026-05-13 and 2026-08-10.
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee
Overview
Frequent QSO partners observed at SO8OO
Stations RZ4M worked most often, as logged from our receiver:
Activity Heatmap
Locator transmitted by RZ4M
Approximate centre of LO44, decoded 2026-08-23 17:57 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 | RZ4M S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-12 19:11 | 80m | -18 / - | JA8EPO | - / - | 2 | Partial capture |
| 08-10 21:52 | 20m | -24 / - | EI8HY | -12 / - | 2 | Partial capture |
| 08-10 19:59 | 80m | -18 / -2 | UB1AXF | -19 / -3 | 5 | ✓ Full exchange observed |
| 08-10 19:50 | 80m | -5 / -2 | OH3OJ/1 | +4 / -8 | 3 | Partial capture |
| 08-10 19:49 | 80m | -11 / - | JH2FXK | - / -14 | 3 | ✓ Closing fragment |
| 08-10 19:42 | 80m | -14 / - | UB8CQC/P | - / -17 | 3 | ✓ Closing fragment |
| 08-10 19:36 | 80m | -10 / - | RA6ZD | -8 / -4 | 3 | ✓ Closing observed |
| 08-10 19:33 | 80m | -10 / -17 | G4YKQ | -12 / -22 | 5 | ✓ Full exchange observed |
| 08-10 19:28 | 80m | -13 / +9 | R50RKZ | +2 / +1 | 4 | ✓ Full exchange observed |
| 08-10 19:26 | 80m | -12 / -15 | PH3T | -6 / -15 | 5 | ✓ Full exchange observed |
| 08-09 20:33 | 20m | - / -13 | CN8NS | -11 / - | 2 | ✓ Closing fragment |
| 08-07 19:44 | 40m | - / -12 | EI8GS | -10 / - | 2 | ✓ Closing fragment |
| 08-07 18:56 | 80m | -8 / - | JH2VVH | - / -19 | 3 | ✓ Closing fragment |
| 08-07 18:53 | 80m | -9 / -2 | UB8FDN | -8 / +3 | 5 | ✓ Full exchange observed |
| 08-07 18:51 | 80m | -15 / - | RC6BB | -24 / - | 2 | ✓ Closing observed |
| 08-07 18:48 | 80m | -9 / - | RQ3D | - / -12 | 2 | ✓ Closing fragment |
| 08-07 18:47 | 80m | -11 / -11 | R1ZH | -16 / -5 | 4 | ✓ Full exchange observed |
| 08-07 18:46 | 80m | -13 / -7 | OH2BVT | -7 / -14 | 5 | ✓ Full exchange observed |
| 08-07 18:43 | 80m | -10 / -11 | SV3DCX | +5 / -9 | 5 | ✓ Full exchange observed |
| 08-07 18:40 | 80m | -8 / -1 | OM1II | +8 / -13 | 7 | ✓ Full exchange observed |
| 08-07 18:14 | 80m | -10 / - | RA4HTH | - / - | 2 | Partial capture |
| 08-07 18:00 | 80m | -10 / -2 | UB3LBU | -7 / -8 | 5 | ✓ Full exchange observed |
| 08-07 18:00 | 80m | -11 / - | R4IQ | - / -6 | 2 | ✓ Closing fragment |
| 08-07 17:57 | 80m | - / -14 | DL1DXX | -16 / - | 2 | Partial capture |
| 08-07 17:56 | 80m | -9 / 0 | R2GFD | -12 / -3 | 5 | ✓ Full exchange observed |
| 08-07 17:53 | 80m | -11 / -18 | UA9ZZ | -22 / - | 4 | ✓ Closing observed |
| 08-07 17:51 | 80m | -10 / +5 | UB6OAK | -14 / -4 | 6 | ✓ Full exchange observed |
| 08-07 17:50 | 80m | -10 / -4 | R7BO | -4 / -5 | 5 | ✓ Full exchange observed |
| 08-07 17:48 | 80m | -8 / -1 | RQ7O | +4 / -2 | 5 | ✓ Full exchange observed |
| 08-07 17:46 | 80m | -9 / -7 | RA9LY | -10 / +1 | 5 | ✓ Full exchange observed |
| 08-07 17:45 | 80m | -10 / - | R9FF | - / -4 | 2 | ✓ Closing fragment |
| 08-07 17:44 | 80m | -13 / - | R8KAN | - / -8 | 2 | ✓ Closing fragment |
| 08-07 17:40 | 80m | -12 / - | UA9LDT | - / - | 2 | Partial capture |
| 08-02 02:27 | 20m | -7 / - | K9DWP | - / - | 3 | Partial capture |
| 08-02 02:26 | 20m | -6 / - | K5MGY | - / - | 2 | Partial capture |
| 08-02 02:24 | 20m | -6 / - | KB3VNG | - / - | 2 | Partial capture |
| 08-02 02:22 | 20m | -3 / - | OA4ENN | - / - | 2 | Partial capture |
| 08-01 20:23 | 20m | -6 / - | MM6EJO | - / -14 | 3 | ✓ Closing fragment |
| 08-01 20:21 | 20m | -6 / - | PY2SAO | - / -22 | 3 | ✓ Closing fragment |
| 08-01 20:07 | 20m | -10 / - | GW4DVB | - / -22 | 4 | Partial capture |
| 08-01 19:48 | 20m | -1 / - | UN6GO | - / - | 4 | Partial capture |
| 08-01 19:47 | 20m | +3 / - | M7BUY | - / -10 | 3 | ✓ Closing fragment |
| 08-01 19:44 | 20m | -4 / - | RN0JJ/P | - / -5 | 2 | ✓ Closing fragment |
| 08-01 19:42 | 20m | -4 / - | JA1HOX | - / -10 | 2 | Partial capture |
| 07-31 20:05 | 80m | -16 / - | OZ2LC | - / - | 3 | Partial capture |
| 07-31 20:04 | 80m | -15 / -6 | RL2F | -4 / - | 3 | ✓ Closing observed |
| 07-31 20:01 | 80m | -8 / - | OZ2SPACE | - / -17 | 2 | Partial capture |
| 07-31 20:00 | 80m | -7 / -8 | R6ZEJ | -4 / -1 | 5 | ✓ Full exchange observed |
| 07-31 19:57 | 80m | -8 / - | RD7X | -10 / - | 3 | ✓ Closing observed |
| 07-31 19:57 | 80m | -7 / +2 | RA3WY | -4 / 0 | 6 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 022300 -4 1976 OA4ENN RZ4M LO44 022415 -6 1976 KB3VNG RZ4M LO44 (x2) 022600 -6 1976 K5MGY RZ4M LO44 (x2) 022715 -6 1976 K9DWP RZ4M LO44 (x3) 203300 -11 2334 RZ4M CN8NS -13 (x2) 215245 -24 1965 EI8HY RZ4M LO44 215400 -12 1966 RZ4M EI8HY RRR 231415 -4 2787 RZ4M VO1CH RR73 233400 -13 588 VA1THU RZ4M LO44 175745 -12 1324 RI1FJL RZ4M LO44
UTC dB Audio Message 194315 -14 1699 UB8CQC/P RZ4M R-17 (x2) 194900 -11 2087 JH2FXK RZ4M LO44 (x3) 195015 +4 365 RZ4M OH3OJ/1 -02 195030 -4 365 OH3OJ/1 RZ4M R-08 (x2) 195915 -23 1682 UB1AXF RZ4M LO44 200030 -19 1680 RZ4M UB1AXF -02 200045 -15 1681 UB1AXF RZ4M R-03 200100 -19 1681 RZ4M UB1AXF RR73 200115 -15 1681 UB1AXF RZ4M 73 191130 -19 2163 JA8EPO RZ4M LO44 (x2)
UTC dB Audio Message 220215 -8 2515 RZ4M R2EA/P KO84 220230 -24 1886 9A2L RZ4M R-20 220415 -7 2515 RZ4M R2EA/P KO84 (x3) 221030 -13 2244 RZ4M G5EA RR73 221130 -11 678 RZ4M T77RN RR73 164600 -16 2453 UB2FEK RZ4M 73 221630 -13 2558 G1YEF RZ4M 73 222145 -18 2370 TJ1GD/P RZ4M LO44 (x2) 222945 -22 1539 M6WRB RZ4M LO44 203445 -24 1392 R0ADN RZ4M 73 194445 -10 2435 RZ4M EI8GS -12 (x2)
UTC dB Audio Message 085145 +2 1036 RZ4M UB6OBY RR73 085430 -18 233 RZ4M R6LKG RR73 094400 -1 1882 RZ4M IU7SEL -07 (x2) 094600 -11 1194 RZ4M RA7E RR73 094615 -21 1739 RA7E RZ4M 73 094730 -16 2338 RZ4M UG4I LO43 102200 -9 1293 RZ4M R7DX KN84 (x4)
Decoder S/N history by band
Daily averages across messages associated with this profile as decoded at SO8OO.