R1IV — 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 R1IV, decoded by SO8OO in southeastern Poland. 498 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 20 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-17.
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 498 FT8 messages attributed to R1IV as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (51%), followed by 80 m (33%) and 40 m (9%). Most decodes (92%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7.1 dB.
Overview
Bands
Last attributed message: 2026-10-17 17:27 UTC
Observed FT8 message patterns
- Attributed sample
- 498 messages
- Active dates
- 20 UTC dates
- Estimated median S/N
- -7.1 dB
- Estimated 10th-90th percentile
- -18 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 77, moderate (-15 to -9 dB) 129, strong (≥ -8 dB) 292.
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 R1IV 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 R1IV
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
- LP63 · 215 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,388 km (approx.)
- Last such locator decoded
- 2026-10-17 17:23 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 | R1IV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-17 17:26 | 80m | -3 / -15 | RA3FH | -11 / - | 4 | ✓ Closing observed |
| 10-17 17:25 | 80m | -5 / - | R8AC | - / -16 | 2 | ✓ Closing fragment |
| 10-17 17:23 | 80m | - / - | EU1AFX | -3 / - | 2 | Partial capture |
| 10-17 17:23 | 80m | - / - | R2EG | -5 / - | 2 | Partial capture |
| 10-17 17:23 | 80m | -5 / -12 | RA6BL | -4 / -10 | 6 | ✓ Full exchange observed |
| 10-17 17:23 | 80m | - / - | ES2AJ | +10 / - | 2 | Partial capture |
| 10-17 17:17 | 80m | - / +1 | RU3OW | -5 / - | 3 | Partial capture |
| 10-17 17:16 | 80m | - / - | OZ6FH | +10 / - | 2 | Partial capture |
| 10-17 17:12 | 80m | - / - | OZ0A | -9 / - | 2 | Partial capture |
| 10-17 17:11 | 80m | -1 / -2 | UA3NFI | -13 / - | 4 | ✓ Closing observed |
| 10-17 17:10 | 80m | - / - | 9A4ZM | +12 / - | 2 | Partial capture |
| 10-17 17:09 | 80m | -4 / -8 | HA7JDU | +5 / -15 | 5 | ✓ Full exchange observed |
| 10-17 17:07 | 80m | - / - | PA3FPQ | -2 / - | 2 | Partial capture |
| 10-17 17:07 | 80m | -6 / - | RA3FH | -5 / -6 | 14 | Partial capture |
| 10-17 17:07 | 80m | 0 / -9 | RV3X | -2 / - | 4 | ✓ Closing observed |
| 10-17 17:06 | 80m | - / - | 4Z5AV | -19 / - | 4 | Partial capture |
| 10-17 17:06 | 80m | -2 / -5 | RV3DBV | -18 / -19 | 4 | ✓ Full exchange observed |
| 10-17 17:06 | 80m | -2 / -10 | S58T | +6 / -16 | 7 | ✓ Full exchange observed |
| 10-15 17:16 | 80m | - / -15 | OE5ABL | +8 / - | 3 | Partial capture |
| 10-15 17:14 | 80m | - / - | RM1O | 0 / - | 2 | Partial capture |
| 10-15 17:13 | 80m | 0 / -6 | LZ936BA | -8 / -20 | 3 | Partial capture |
| 10-15 17:08 | 80m | - / -18 | IK4TVP | +8 / - | 2 | Partial capture |
| 10-15 17:08 | 80m | - / -11 | RM1O | +12 / - | 3 | Partial capture |
| 10-15 17:01 | 80m | -11 / - | RA4NCC | - / -4 | 2 | ✓ Closing fragment |
| 10-15 17:01 | 80m | -11 / -8 | RA3V | -12 / -12 | 6 | ✓ Full exchange observed |
| 10-15 16:59 | 80m | -13 / - | UA3YAJ | -4 / -12 | 4 | Partial capture |
| 10-15 16:58 | 80m | - / -16 | RA0LQ | -17 / - | 3 | Partial capture |
| 10-15 16:57 | 80m | - / -13 | RM1O | +7 / - | 16 | Partial capture |
| 10-15 16:55 | 80m | -15 / -19 | DL5MO | +2 / -21 | 5 | ✓ Full exchange observed |
| 10-15 16:54 | 80m | -12 / - | R6ZEJ | - / -12 | 2 | ✓ Closing fragment |
| 10-15 16:53 | 80m | - / -4 | RV9WJP | -11 / - | 3 | ✓ Closing fragment |
| 10-15 16:50 | 80m | -10 / -8 | UA3NFG | -18 / -9 | 4 | ✓ Full exchange observed |
| 10-15 16:49 | 80m | -14 / -6 | R1AP | +14 / -5 | 17 | ✓ Full exchange observed |
| 10-15 16:47 | 80m | -3 / -9 | R7DX | +12 / -4 | 5 | ✓ Full exchange observed |
| 10-15 16:47 | 80m | -9 / -6 | RA6YDX | -11 / -15 | 3 | Partial capture |
| 10-15 16:46 | 80m | - / - | RZ4M | -12 / - | 3 | Partial capture |
| 10-15 16:45 | 80m | -10 / -8 | R2EA/P | -9 / -11 | 5 | ✓ Full exchange observed |
| 10-15 16:45 | 80m | - / - | HA8ZG | +3 / - | 2 | Partial capture |
| 10-15 16:45 | 80m | - / - | RV3YN | -12 / - | 6 | Partial capture |
| 10-15 16:44 | 80m | -7 / -8 | R6ML | -4 / - | 6 | ✓ Closing observed |
| 10-15 16:44 | 80m | -10 / -12 | RA1OW | -5 / -6 | 18 | ✓ Full exchange observed |
| 10-15 16:44 | 80m | - / -7 | UN7LAN | -22 / - | 2 | Partial capture |
| 10-15 16:44 | 80m | - / - | YO2UKG | +13 / - | 2 | Partial capture |
| 10-15 16:44 | 80m | - / -10 | RX6LG | -2 / - | 7 | Partial capture |
| 10-10 16:31 | 80m | - / - | R1BQR | -14 / - | 2 | Partial capture |
| 10-10 16:28 | 80m | - / - | SM0CXS | +11 / - | 6 | Partial capture |
| 10-10 16:27 | 80m | -8 / -2 | RG3M | +6 / -8 | 6 | ✓ Full exchange observed |
| 10-10 16:26 | 80m | -3 / -11 | UA3QQG | -14 / - | 8 | ✓ Closing observed |
| 10-10 16:26 | 80m | -3 / -9 | R8WM | -11 / - | 4 | ✓ Closing observed |
| 10-10 16:24 | 80m | - / - | RV4LD | +1 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 172345 +10 2031 R1IV ES2AJ +17 172400 -5 562 RA6BL R1IV -10 172415 -4 908 R1IV RA6BL R-12 172415 -7 561 R1IV R2EG KO82 172415 -1 1247 R1IV EU1AFX KO43 172500 -3 562 R8AC R1IV -16 172515 -16 2092 R1IV RA6MQ -12 172530 -7 562 R8AC R1IV RR73 172545 -5 908 R1IV RA6BL R-12 172600 -5 562 RA6BL R1IV RR73 172615 -5 907 R1IV RA6BL 73 172615 -12 1379 R1IV RA3FH KO84 (x2) 172700 -3 562 RA3FH R1IV RR73 172715 -12 1379 R1IV RA3FH 73
UTC dB Audio Message 182315 -24 1698 R1IV DM9LSB JN48 183915 -8 594 R1IV DK2CC JO63 (x6) 184845 -15 1115 R1IV RA3LD R-06 184845 -10 606 R1IV DK2CC R-06 (x2) 184945 -12 1115 R1IV RA3LD R+03 (x2) 183730 +15 850 R1IV LZ2IP -13 184000 +0 1524 R1IV RL3FA KO85 (x2)
UTC dB Audio Message 182130 -20 1441 R1IV R6DUW 73 182145 -8 1432 CQ R1IV LP63 182200 -16 1433 R1IV UA1RC +00 182200 -7 1989 R1IV RC6OX KN88 182245 -6 1432 UA1RC R1IV 73 182315 -5 1433 CQ R1IV LP63 (x2) 182600 -4 1432 <...> R1IV R-14 182745 -11 2112 R1IV UA3UBV LO07 190345 -7 1637 PD1SL R1IV LP63 (x2) 190430 -11 1635 R1IV PD1SL -21 (x3) 190545 -13 1637 UB3FBD R1IV RR73
UTC dB Audio Message 103845 -18 2001 R1IV EW8CW KO52 103900 -16 1055 CQ R1IV LP63 a1 103915 -9 2001 R1IV EW8CW KO52 (x3) 104030 -18 865 CQ R1IV LP63 a1 104315 -15 866 R1IV OK1UOZ 73 104400 -16 866 HB9MZI R1IV -04 171330 -1 2655 R1IV DL1R JN58 (x3) 172100 -19 1858 R1IV RX4SA LO36 (x2) 172430 -24 1576 R1IV PD1RGW JO31 (x2)
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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