RZ4M — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving RZ4M, decoded by SO8OO in southeastern Poland. 1,119 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 52 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-23.
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 1,119 FT8 messages attributed to RZ4M as the transmitting token by decoded message structure across 52 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (43%), followed by 20 m (42%) and 40 m (15%). Most decodes (63%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-10-23 16:38 UTC
Observed FT8 message patterns
- Attributed sample
- 1,119 messages
- Active dates
- 52 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -17 to +4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 166, moderate (-15 to -9 dB) 358, strong (≥ -8 dB) 595.
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 RZ4M 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 RZ4M
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
- LO44 · 608 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,908 km (approx.)
- Last such locator decoded
- 2026-10-23 16:38 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 | RZ4M S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-23 16:46 | 40m | - / -14 | RA3LBW | +7 / - | 3 | ✓ Closing fragment |
| 10-23 16:36 | 40m | -11 / - | UN1EAU | - / - | 2 | ✓ Closing fragment |
| 10-23 16:22 | 40m | -14 / - | UN1EAU | - / - | 2 | Partial capture |
| 10-23 16:13 | 40m | -6 / - | UA3PAB/QRP | - / - | 2 | Partial capture |
| 10-23 16:10 | 40m | - / -6 | RY6LAL | -10 / - | 2 | ✓ Closing fragment |
| 10-23 16:08 | 40m | -12 / -1 | R9LY | +5 / -3 | 4 | ✓ Full exchange observed |
| 10-23 16:03 | 40m | -15 / - | R3DFU | - / -13 | 2 | ✓ Closing fragment |
| 10-23 16:02 | 40m | -2 / -11 | R6CW | +6 / - | 4 | ✓ Closing observed |
| 10-23 16:01 | 40m | -9 / -7 | DD7EE | -5 / - | 4 | ✓ Closing observed |
| 10-23 16:01 | 40m | -8 / -9 | EA3HMM | -3 / -18 | 7 | ✓ Full exchange observed |
| 10-23 15:59 | 40m | -6 / - | RN3YN | - / -4 | 2 | ✓ Closing fragment |
| 10-23 15:51 | 80m | +5 / - | 4O4A | - / - | 3 | Partial capture |
| 10-23 15:46 | 80m | -4 / +10 | RD4WM | -8 / +2 | 4 | ✓ Full exchange observed |
| 10-23 15:38 | 80m | -1 / - | RX9KJ | - / - | 4 | Partial capture |
| 10-23 15:35 | 80m | - / +1 | UA9LLE | -13 / - | 3 | Partial capture |
| 10-23 15:34 | 80m | - / +2 | R2GFN | +9 / - | 4 | ✓ Closing fragment |
| 10-23 15:34 | 80m | - / -2 | RA4PKA | -14 / - | 2 | ✓ Closing fragment |
| 10-23 01:01 | 40m | -17 / - | ON8FAB | - / - | 3 | Partial capture |
| 10-23 00:51 | 40m | -17 / - | RZ9OL | - / -10 | 5 | ✓ Closing fragment |
| 10-22 22:36 | 40m | -12 / - | OZ3AAF | - / -14 | 3 | ✓ Closing fragment |
| 10-22 22:32 | 40m | -15 / - | OS4K | - / -22 | 2 | ✓ Closing fragment |
| 10-22 22:30 | 40m | - / -13 | MI7XHT | -1 / - | 2 | ✓ Closing fragment |
| 10-22 22:25 | 40m | -10 / - | IU8LMC | - / -15 | 2 | Partial capture |
| 10-22 22:23 | 40m | -18 / - | G0ALB | - / - | 2 | Partial capture |
| 10-22 22:17 | 40m | -8 / - | EA4HWT | - / -21 | 3 | ✓ Closing fragment |
| 10-22 22:15 | 40m | -10 / - | F1GUQ | - / -15 | 2 | ✓ Closing fragment |
| 10-22 21:59 | 80m | 0 / -7 | SO1CJ | 0 / -9 | 5 | ✓ Full exchange observed |
| 10-22 21:55 | 80m | -5 / - | R0DZ | - / -22 | 3 | ✓ Closing fragment |
| 10-22 21:51 | 80m | -6 / -10 | DL7ACA | +17 / -16 | 4 | ✓ Full exchange observed |
| 10-22 21:48 | 80m | -4 / -11 | DL9ATW | +3 / -21 | 15 | Partial capture |
| 10-22 21:46 | 80m | +1 / -14 | G3SZG | +1 / - | 3 | ✓ Closing observed |
| 10-22 21:44 | 80m | - / -16 | RK3DSW | -11 / - | 2 | ✓ Closing fragment |
| 10-22 21:39 | 80m | -2 / -14 | EI4JFB | -3 / - | 6 | ✓ Closing observed |
| 10-22 21:26 | 80m | -5 / - | EI4JFB | - / - | 8 | Partial capture |
| 10-22 19:45 | 80m | -3 / - | EP2AES | - / - | 2 | Partial capture |
| 10-22 19:43 | 80m | - / - | DL7ACA | +4 / - | 4 | Partial capture |
| 10-22 19:42 | 80m | -1 / - | R1QF/P | -4 / - | 2 | ✓ Closing observed |
| 10-22 18:25 | 80m | -10 / - | R3ND | -8 / -5 | 3 | ✓ Closing observed |
| 10-22 18:19 | 80m | - / -8 | S59A | +18 / - | 3 | Partial capture |
| 10-22 18:18 | 80m | -12 / - | R3DPZ | - / -16 | 2 | ✓ Closing fragment |
| 10-22 18:17 | 80m | -15 / - | R8CIS | - / -10 | 3 | ✓ Closing fragment |
| 10-22 16:17 | 80m | -13 / -6 | R1CAA | -10 / -7 | 4 | ✓ Full exchange observed |
| 10-22 16:13 | 80m | -9 / - | UA9CMN | - / -7 | 2 | Partial capture |
| 10-22 16:11 | 80m | -17 / - | RC0AT | - / -16 | 3 | ✓ Closing fragment |
| 10-22 16:06 | 80m | -10 / - | RA8CO | - / - | 2 | ✓ Closing fragment |
| 10-22 16:01 | 80m | -9 / - | UN7LAN | - / -10 | 3 | ✓ Closing fragment |
| 10-22 16:00 | 80m | -10 / - | R0ADK | - / -10 | 3 | ✓ Closing fragment |
| 10-22 15:56 | 80m | -8 / - | OD5ZZ | - / -22 | 4 | Partial capture |
| 10-22 15:53 | 80m | -14 / - | UN7EAN | -23 / -8 | 4 | ✓ Closing observed |
| 10-21 23:44 | 40m | - / -7 | BG0DLA | -19 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 161630 -16 1106 <...> RZ4M LO44 162030 -15 1106 RA3GK RZ4M LO44 162200 -17 1106 UN1EAU RZ4M LO44 (x2) 162545 -24 1443 RZ4M R0ADK NO56 162615 -2 649 RZ4M R6DJR -09 162930 -13 844 R9FF RZ4M -18 163630 -10 344 UN1EAU RZ4M 73 (x2) 163730 -12 345 CQ RZ4M LO44 a1 (x2) 163815 +8 344 RZ4M RA3LBW KO64 (x4)
UTC dB Audio Message 153545 -14 2452 RZ4M UA9LLE MO27 153545 +8 808 RZ4M R2GFN RR73 153615 -11 2452 RZ4M UA9LLE MO27 (x2) 153830 +2 1228 RX9KJ RZ4M LO44 (x4) 154600 -13 2071 RZ4M RD4WM +10 154615 -4 2072 RD4WM RZ4M R+02 154630 -4 2071 RZ4M RD4WM RR73 154645 -4 2071 RD4WM RZ4M 73 155100 -1 2563 4O4A RZ4M LO44 (x3)
UTC dB Audio Message 172215 +4 804 RZ4M RM5F KO85 172515 -2 2303 RZ4M RA6SA KN76
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
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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