RA4UIV — 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 RA4UIV, decoded by SO8OO in southeastern Poland. 544 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 61 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-22.
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 544 FT8 messages attributed to RA4UIV as the transmitting token by decoded message structure across 61 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (46%), followed by 40 m (34%) and 20 m (20%). Most decodes (77%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12.2 dB.
Overview
Bands
Last attributed message: 2026-10-22 07:03 UTC
Observed FT8 message patterns
- Attributed sample
- 544 messages
- Active dates
- 61 UTC dates
- Estimated median S/N
- -12.2 dB
- Estimated 10th-90th percentile
- -20 to -4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 172, moderate (-15 to -9 dB) 223, strong (≥ -8 dB) 149.
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 RA4UIV 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 RA4UIV
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
- LO24 · 107 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,652 km (approx.)
- Last such locator decoded
- 2026-10-22 07:03 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 | RA4UIV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-22 07:00 | 40m | -11 / - | TO4A | - / - | 4 | Partial capture |
| 10-22 06:56 | 40m | - / +6 | EW2GI | -14 / - | 7 | ✓ Closing fragment |
| 10-19 14:06 | 40m | - / -1 | RD9T | -16 / - | 2 | ✓ Closing fragment |
| 10-15 16:37 | 80m | -16 / -15 | R2EA/P | -8 / -4 | 6 | ✓ Full exchange observed |
| 10-15 14:53 | 80m | -20 / -15 | RV3YN | -16 / -3 | 4 | ✓ Full exchange observed |
| 10-14 16:07 | 160m | - / -8 | UA4FKT | -3 / - | 2 | ✓ Closing fragment |
| 10-14 15:56 | 160m | - / - | R7OF | 0 / - | 2 | Partial capture |
| 10-14 15:55 | 160m | - / - | RA9CMO | -17 / - | 4 | Partial capture |
| 10-14 15:51 | 160m | - / - | RA9CMO | -18 / - | 2 | Partial capture |
| 10-14 11:48 | 40m | - / -11 | YO3JW | -5 / - | 2 | ✓ Closing fragment |
| 10-13 16:40 | 80m | -13 / +7 | R3UG | -3 / +7 | 6 | ✓ Full exchange observed |
| 10-13 16:22 | 80m | -14 / - | RA7E/P | - / - | 9 | Partial capture |
| 10-13 16:16 | 80m | -17 / - | R6ZCE | -6 / - | 4 | ✓ Closing observed |
| 10-13 16:12 | 80m | -17 / - | RA4P/P | - / -3 | 2 | ✓ Closing fragment |
| 10-13 16:04 | 80m | -17 / - | RA4P/P | - / +10 | 5 | Partial capture |
| 10-13 16:02 | 80m | -18 / -5 | R80SAA | -17 / - | 7 | ✓ Closing observed |
| 10-13 15:54 | 40m | - / 0 | RA3ZH | -18 / - | 3 | ✓ Closing fragment |
| 10-12 15:26 | 40m | -14 / - | LZ/TF1OL | - / -15 | 2 | Partial capture |
| 10-12 15:22 | 40m | -16 / - | M0VTS/P | - / - | 4 | Partial capture |
| 10-11 16:15 | 40m | -10 / -7 | R80SAA | +5 / - | 3 | ✓ Closing observed |
| 10-10 16:53 | 80m | -14 / -2 | RA3PGR | -11 / +1 | 6 | ✓ Full exchange observed |
| 10-10 16:52 | 80m | -17 / - | RC2P | - / +5 | 2 | Partial capture |
| 10-10 16:46 | 80m | -14 / -2 | R2PT | -10 / - | 3 | ✓ Closing observed |
| 10-10 16:43 | 80m | -14 / - | R2UZ | - / -2 | 3 | Partial capture |
| 10-10 05:59 | 40m | - / -3 | UC6D | -10 / - | 3 | ✓ Closing fragment |
| 10-09 18:23 | 80m | -15 / -9 | RN3DDW/P | -13 / - | 2 | ✓ Closing observed |
| 10-08 16:55 | 40m | -10 / - | RA6FCU/P | - / - | 2 | Partial capture |
| 10-08 16:03 | 40m | -15 / - | SP5UKR | - / - | 3 | Partial capture |
| 10-07 17:05 | 80m | -7 / -7 | R4CC | -6 / +6 | 5 | ✓ Full exchange observed |
| 10-07 16:59 | 80m | - / +2 | RU4I | -7 / - | 2 | ✓ Closing fragment |
| 10-07 16:53 | 80m | - / -2 | UA4CKZ | -10 / - | 2 | ✓ Closing fragment |
| 10-07 16:52 | 80m | - / +8 | R4DS | -8 / - | 2 | ✓ Closing fragment |
| 10-06 15:59 | 40m | -12 / - | RU3KO | -7 / - | 6 | ✓ Closing observed |
| 10-06 15:58 | 40m | -12 / - | R2PA | - / +9 | 2 | ✓ Closing fragment |
| 10-05 15:38 | 40m | -18 / -12 | R7PKS/P | -8 / - | 4 | ✓ Closing observed |
| 10-05 15:32 | 80m | -16 / - | R5GG | - / -7 | 3 | Partial capture |
| 10-04 16:35 | 40m | -10 / 0 | UA3PTY | +2 / +1 | 3 | ✓ Full exchange observed |
| 10-04 14:57 | 80m | -9 / - | RO2E/M | - / -13 | 6 | Partial capture |
| 10-04 14:51 | 80m | -23 / -10 | RC2P | -6 / +9 | 3 | ✓ Full exchange observed |
| 10-03 16:38 | 40m | - / -1 | OK1UG | +6 / - | 3 | ✓ Closing fragment |
| 10-03 16:33 | 40m | -14 / +9 | R3PLN | -7 / -5 | 4 | ✓ Full exchange observed |
| 10-03 06:46 | 40m | - / -9 | EU1EU | -13 / - | 2 | ✓ Closing fragment |
| 10-02 16:00 | 40m | -15 / -12 | RA3M | -4 / - | 3 | ✓ Closing observed |
| 10-02 15:59 | 40m | - / -1 | RA1AGX | +2 / - | 2 | ✓ Closing fragment |
| 10-02 15:55 | 40m | -16 / - | R1BLO | -15 / -12 | 3 | ✓ Closing observed |
| 10-02 15:49 | 40m | -14 / -1 | UA3PAB | -2 / - | 3 | ✓ Closing observed |
| 10-02 07:15 | 40m | - / - | UA3PRS | -8 / - | 2 | ✓ Closing fragment |
| 09-29 06:36 | 40m | - / +8 | R2PX | -14 / - | 2 | ✓ Closing fragment |
| 09-29 05:43 | 40m | - / - | UA3PTK | -14 / - | 2 | ✓ Closing fragment |
| 09-23 15:03 | 40m | -20 / - | R3PJ | - / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 140600 -15 2238 RA4UIV RD9T R-01 (x2) 064445 -15 520 <...> RA4UIV LO24 (x2) 065600 -15 1438 RA4UIV EW2GI KO43 (x7) 070015 -10 520 TO4A RA4UIV LO24 (x4)
UTC dB Audio Message 164130 -6 521 RA4UIV R3UG +07 164145 -13 853 R3UG RA4UIV R+07 164200 +0 521 RA4UIV R3UG RR73 164215 -9 853 R3UG RA4UIV 73 143945 -22 1544 R4AGE/P RA4UIV -08 145330 -17 2255 RA4UIV RV3YN -15 145345 -21 1504 RV3YN RA4UIV R-03 145400 -16 2256 RA4UIV RV3YN RR73 145415 -20 1504 RV3YN RA4UIV 73 163700 -16 1054 R2EA/P RA4UIV -04 (x3) 163815 -8 1267 RA4UIV R2EA/P R-15 163830 -16 1054 R2EA/P RA4UIV RR73 163845 -9 1266 RA4UIV R2EA/P 73
UTC dB Audio Message 155130 -18 2156 RA4UIV RA9CMO MO06 (x2) 155400 -11 640 RA4UIV R9CS/P -11 155500 -5 858 RA4UIV UA4FKT LO23 155500 -16 2156 RA4UIV RA9CMO MO06 (x4) 155630 +2 1025 RA4UIV R7OF KN87 (x2) 160700 -1 858 RA4UIV UA4FKT R-08 (x2)
UTC dB Audio Message 062515 +0 2479 <...> RA4UIV +08 062530 -2 2630 RA4UIV R6DOB/M R-15 (x2) 062630 -2 2630 RA4UIV RR73; RG4D <...> +04 124945 -2 1208 R9OBJ/P RA4UIV -04 (x3) 071030 -8 1565 RA4UIV RO6OP -09 (x2) 071845 -8 2083 RA4UIV RM6OG R-18 061030 -10 1129 RC6OU RA4UIV +04 (x2) 061115 +12 867 RA4UIV RC6OU R-05 061130 -13 1129 RC6OU RA4UIV RR73 061145 +1 867 RA4UIV RC6OU 73
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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