R4ZZ — 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 R4ZZ, decoded by SO8OO in southeastern Poland. 7,210 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 67 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-10-21.
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 7,210 FT8 messages attributed to R4ZZ as the transmitting token by decoded message structure across 67 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%), followed by 20 m (0%). Most decodes (70%) fell within the six-hour window 20:00-02:00 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: 2026-10-21 00:38 UTC
Observed FT8 message patterns
- Attributed sample
- 7,210 messages
- Active dates
- 67 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -15 to -1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 553, moderate (-15 to -9 dB) 2,917, strong (≥ -8 dB) 3,740.
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 R4ZZ 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 R4ZZ
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
- LO35 · 4,668 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,795 km (approx.)
- Last such locator decoded
- 2026-10-21 00:38 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 | R4ZZ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-21 00:12 | 40m | -4 / -2 | UB3FCU | -24 / -10 | 5 | ✓ Full exchange observed |
| 10-20 23:00 | 40m | -6 / - | RW0AE | - / 0 | 2 | Partial capture |
| 10-20 22:41 | 40m | -8 / - | BI8FRF | - / -17 | 3 | Partial capture |
| 10-20 22:37 | 40m | -6 / -13 | F4MVU | -2 / -10 | 3 | Partial capture |
| 10-20 22:34 | 40m | -4 / -3 | G0HSP | -3 / +8 | 5 | ✓ Full exchange observed |
| 10-20 22:28 | 40m | - / -8 | TA3NK | -6 / - | 3 | ✓ Closing fragment |
| 10-20 22:25 | 40m | -8 / - | NE1CW | - / -15 | 2 | Partial capture |
| 10-20 22:19 | 40m | -14 / -14 | F4MVU | -5 / -14 | 5 | Partial capture |
| 10-20 22:11 | 40m | -14 / -5 | G0MGK | -20 / -7 | 4 | ✓ Full exchange observed |
| 10-20 22:07 | 40m | -18 / -4 | EA1CF | -14 / -2 | 5 | ✓ Full exchange observed |
| 10-20 21:27 | 40m | - / -3 | 2E0SHD | -10 / - | 3 | ✓ Closing fragment |
| 10-20 21:20 | 40m | +1 / -8 | R4ADJ | -16 / -7 | 6 | ✓ Full exchange observed |
| 10-20 21:18 | 40m | 0 / - | HF50HSP | - / +10 | 2 | Partial capture |
| 10-20 21:15 | 40m | 0 / - | SN5MV | - / - | 2 | Partial capture |
| 10-20 19:51 | 40m | -7 / - | SP/DG1HVL/P | - / -2 | 3 | Partial capture |
| 10-20 19:43 | 40m | -6 / - | RD7O | - / +9 | 2 | ✓ Closing fragment |
| 10-20 19:41 | 40m | -6 / -21 | BI3UPU | -24 / - | 3 | ✓ Closing observed |
| 10-20 17:26 | 40m | -9 / -13 | SQ4INW | -5 / 0 | 4 | ✓ Full exchange observed |
| 10-20 17:22 | 40m | -10 / -17 | ON5RZ | -3 / -11 | 6 | ✓ Full exchange observed |
| 10-20 17:12 | 40m | -2 / -11 | R5AV | +2 / +5 | 3 | ✓ Full exchange observed |
| 10-20 17:09 | 40m | -7 / - | OH7KWX | - / +7 | 4 | Partial capture |
| 10-20 17:02 | 40m | -10 / - | FD0FKP/R | - / +4 | 4 | Partial capture |
| 10-20 16:56 | 40m | -7 / - | OK1DTC | +3 / +7 | 5 | ✓ Full exchange observed |
| 10-20 16:56 | 40m | -9 / -7 | DL3RN | 0 / - | 4 | ✓ Closing observed |
| 10-20 16:27 | 40m | -4 / - | R3DRA | -14 / -7 | 16 | Partial capture |
| 10-20 16:27 | 40m | 0 / -6 | RU3G | -11 / -8 | 4 | ✓ Full exchange observed |
| 10-20 16:24 | 40m | -1 / -8 | RD6MR | +3 / - | 5 | ✓ Full exchange observed |
| 10-20 16:22 | 40m | -2 / -1 | UA1CFF | +7 / +7 | 5 | ✓ Full exchange observed |
| 10-19 13:59 | 40m | -16 / - | PA2DX | -14 / -21 | 4 | ✓ Closing observed |
| 10-19 13:55 | 40m | - / +1 | YO2PID | +17 / - | 2 | ✓ Closing fragment |
| 10-19 13:53 | 40m | -16 / - | RC3LD | - / -10 | 3 | ✓ Closing fragment |
| 10-19 13:52 | 40m | -16 / - | BG2GWN | - / -7 | 2 | ✓ Closing fragment |
| 10-19 13:49 | 40m | -16 / - | UB1QAI | - / -4 | 2 | ✓ Closing fragment |
| 10-19 13:47 | 40m | -16 / - | AA7A | - / -20 | 4 | Partial capture |
| 10-19 12:40 | 40m | - / +2 | RV3X | -8 / - | 3 | ✓ Closing fragment |
| 10-17 00:15 | 40m | -16 / - | OH1TEV | - / - | 5 | ✓ Closing fragment |
| 10-17 00:12 | 40m | -16 / - | YY5EHT | - / -8 | 4 | Partial capture |
| 10-16 23:54 | 40m | -14 / +2 | HB9GFJ | -22 / - | 4 | ✓ Closing observed |
| 10-16 23:04 | 40m | - / -18 | TA2ED | -24 / - | 2 | ✓ Closing fragment |
| 10-16 23:01 | 40m | -8 / -12 | G8KHF | -5 / +4 | 6 | ✓ Full exchange observed |
| 10-16 22:53 | 40m | -12 / - | K1GG | - / -15 | 3 | Partial capture |
| 10-16 22:50 | 40m | -12 / - | AA3B | - / -9 | 2 | Partial capture |
| 10-16 22:36 | 40m | -4 / - | C5R | - / -6 | 6 | Partial capture |
| 10-16 22:32 | 40m | -5 / - | TA3F | - / -17 | 3 | ✓ Closing fragment |
| 10-16 22:28 | 40m | -6 / - | I1/OE1AAJ | - / -4 | 4 | Partial capture |
| 10-16 22:19 | 40m | -5 / - | TA3GO | - / -10 | 3 | Partial capture |
| 10-16 22:14 | 40m | +3 / -7 | EA4IFO | -14 / -12 | 3 | ✓ Full exchange observed |
| 10-16 22:11 | 40m | -2 / - | RN3YN | - / -6 | 5 | Partial capture |
| 10-16 22:04 | 40m | -3 / - | DA0M | - / -24 | 4 | ✓ Closing fragment |
| 10-16 22:01 | 40m | -15 / - | NA3M | - / -10 | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 003115 +5 372 CQ R4ZZ LO35 (x15)
UTC dB Audio Message 220445 +6 1201 R4ZZ R2HB 73 (x2) 220615 -17 1145 R4ZZ UA9SY LO63 (x4) 144000 -24 1789 R4ZZ RR73; UD8D <...> +10 181000 +5 2650 R4ZZ R3BDQ -16 (x4) 024215 -7 2044 R4ZZ RA5AD R-12 (x2) 180830 -15 348 R4ZZ R4HLM LO53 (x2)
UTC dB Audio Message 195745 -14 1545 R4ZZ UB1Q -16 (x2) 200345 -12 1076 R4ZZ RU4SO -11 (x2) 200830 +13 2233 R4ZZ R50RKZ -21 (x2) 201345 +2 2167 R4ZZ YL3CW KO36 (x3) 184830 -10 443 R4ZZ UB6OAJ -13
UTC dB Audio Message 131530 -4 2437 R4ZZ PD2WL -14 131545 -11 358 PD2WL R4ZZ R+08 (x2) 131630 +1 2437 R4ZZ PD2WL RR73 131645 -5 358 PD2WL R4ZZ 73 131700 -4 2437 R4ZZ PD2WL RR73 131715 -9 359 PD2WL R4ZZ 73 131745 -13 358 CQ R4ZZ LO35 (x5) 131245 -10 2712 RI1FJL R4ZZ +00 131415 -2 2710 CQ R4ZZ LO35 131445 -7 2710 UB2FEH R4ZZ +09
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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