R4DI — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving R4DI, decoded by SO8OO in southeastern Poland. 1,323 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 39 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-24.
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 1,323 FT8 messages attributed to R4DI as the transmitting token by decoded message structure across 39 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (37%), followed by 80 m (24%) and 40 m (21%). Most decodes (72%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -6.9 dB.
Overview
Bands
Last attributed message: 2026-09-24 18:36 UTC
Observed FT8 message patterns
- Attributed sample
- 1,323 messages
- Active dates
- 39 UTC dates
- Estimated median S/N
- -6.9 dB
- Estimated 10th-90th percentile
- -15 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 117, moderate (-15 to -9 dB) 392, strong (≥ -8 dB) 814.
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 R4DI 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 R4DI
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
- LO42 · 429 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,905 km (approx.)
- Last such locator decoded
- 2026-09-23 18:47 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 | R4DI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-24 18:33 | 40m | -8 / -3 | RC1BQ | -18 / -3 | 4 | ✓ Full exchange observed |
| 09-24 17:20 | 80m | 0 / - | ZL2BX | - / -15 | 8 | ✓ Closing fragment |
| 09-23 18:49 | 160m | -17 / - | UA9LP | -24 / -6 | 5 | ✓ Closing observed |
| 09-23 18:45 | 160m | -15 / - | R5KH | - / -8 | 2 | ✓ Closing fragment |
| 09-23 18:42 | 160m | -11 / - | RI1FJZ | - / -24 | 2 | Partial capture |
| 09-23 18:14 | 160m | - / -14 | R2FCT | +8 / - | 2 | ✓ Closing fragment |
| 09-23 18:09 | 160m | -22 / -2 | RI1FJZ | -12 / -24 | 4 | Partial capture |
| 09-23 18:08 | 160m | -16 / - | R1TET | - / -17 | 2 | ✓ Closing fragment |
| 09-23 18:03 | 160m | -20 / - | UD8D | - / -9 | 2 | ✓ Closing fragment |
| 09-23 17:54 | 80m | -7 / - | R6KA | +5 / +3 | 4 | ✓ Full exchange observed |
| 09-23 17:53 | 80m | -12 / - | R2EA/P | - / -12 | 3 | ✓ Closing fragment |
| 09-18 19:36 | 40m | -2 / -3 | R5CB | -13 / +2 | 3 | ✓ Full exchange observed |
| 09-18 19:36 | 40m | +1 / - | UA3XDR | - / +10 | 2 | ✓ Closing fragment |
| 09-18 19:35 | 40m | +2 / - | R2ASD | -5 / - | 3 | ✓ Closing observed |
| 09-18 19:34 | 40m | -4 / - | R2PT | - / - | 2 | ✓ Closing fragment |
| 09-18 19:32 | 40m | -5 / - | OH5KZ | -17 / +5 | 3 | ✓ Closing observed |
| 09-18 18:35 | 80m | -3 / - | EX7DY | - / -9 | 2 | Partial capture |
| 09-18 18:28 | 80m | -6 / - | ZL1NU | - / -17 | 4 | Partial capture |
| 09-18 18:23 | 80m | +1 / - | ZL1NU | - / -17 | 5 | Partial capture |
| 09-18 18:16 | 80m | +2 / - | ZL1NU | - / -17 | 6 | Partial capture |
| 09-16 19:57 | 160m | -20 / - | RI1FJZ | - / - | 2 | Partial capture |
| 09-16 19:50 | 160m | - / -9 | RM5F | -16 / - | 2 | ✓ Closing fragment |
| 09-16 19:45 | 160m | -17 / - | RI1FJZ | - / -18 | 3 | Partial capture |
| 09-16 19:42 | 160m | -21 / - | R3YCJ | -19 / -14 | 4 | ✓ Closing observed |
| 09-14 20:38 | 40m | -14 / - | OZ/DF4ZL | - / -20 | 3 | Partial capture |
| 09-14 20:36 | 40m | -10 / - | UC8U | - / +5 | 2 | Partial capture |
| 09-14 20:29 | 40m | - / -1 | DR800WE | +3 / - | 3 | Partial capture |
| 09-14 20:29 | 40m | +1 / - | OZ/DF4ZL | - / -16 | 3 | Partial capture |
| 09-14 20:20 | 160m | -12 / +10 | R5BS | -15 / - | 3 | ✓ Closing observed |
| 09-14 20:18 | 160m | -8 / -8 | EA3A | -7 / -20 | 4 | ✓ Full exchange observed |
| 09-14 20:16 | 160m | -12 / - | DL1RWN | - / -3 | 6 | Partial capture |
| 09-14 20:14 | 160m | -10 / +6 | R3PA | -18 / +8 | 4 | ✓ Full exchange observed |
| 09-14 20:10 | 80m | -1 / +4 | DH8BAB | +10 / - | 3 | ✓ Closing observed |
| 09-14 20:08 | 80m | +6 / +10 | S51DI | +16 / +3 | 4 | ✓ Full exchange observed |
| 09-14 20:06 | 80m | - / -6 | F5BZB | -5 / - | 2 | Partial capture |
| 09-14 20:05 | 80m | +7 / -1 | G4IRN | +1 / +5 | 6 | ✓ Full exchange observed |
| 09-14 20:01 | 80m | -3 / -3 | R2PU | +10 / +7 | 4 | ✓ Full exchange observed |
| 09-14 19:58 | 80m | 0 / -4 | RW3YS | +6 / -9 | 4 | ✓ Full exchange observed |
| 09-14 19:48 | 80m | +1 / -4 | E70SZ | +3 / -23 | 12 | ✓ Full exchange observed |
| 09-14 19:46 | 80m | - / - | 9A3AUH | +6 / - | 4 | Partial capture |
| 09-14 19:40 | 80m | +2 / - | VK2NSS | - / -20 | 11 | ✓ Closing fragment |
| 09-14 19:38 | 80m | -3 / -1 | UG3B | +2 / +1 | 7 | ✓ Full exchange observed |
| 09-14 18:45 | 80m | -3 / +3 | OH2CI | -2 / -5 | 4 | ✓ Full exchange observed |
| 09-14 18:27 | 80m | +1 / +10 | R5ACQ | +2 / +8 | 5 | ✓ Full exchange observed |
| 09-14 18:24 | 80m | 0 / -1 | RA6ZS | 0 / - | 3 | ✓ Full exchange observed |
| 09-14 18:22 | 80m | +1 / +1 | R2SDZ | +3 / - | 2 | ✓ Closing observed |
| 09-14 18:21 | 80m | +4 / - | EW6PG | -1 / -5 | 3 | ✓ Closing observed |
| 09-14 18:20 | 80m | +2 / - | RA3XDX | - / +4 | 2 | Partial capture |
| 09-14 18:13 | 80m | +4 / - | RA3BQ | - / -5 | 3 | Partial capture |
| 09-14 17:54 | 160m | -12 / -8 | RU3DBT | -23 / -10 | 3 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 193530 -5 1492 R4DI R2ASD RR73 193545 +1 1492 R2ASD R4DI 73 193615 +4 1493 UA3XDR R4DI +10 193645 +0 1493 R5CB R4DI +02 193700 -13 1127 R4DI R5CB R-03 193715 -3 1493 R5CB R4DI RR73 193745 -3 1493 CQ R4DI LO42 193815 -2 1492 UA3XDR R4DI RR73 183300 -10 1542 RC1BQ R4DI -03 183315 -21 1115 R4DI RC1BQ R-03 183330 -7 1542 RC1BQ R4DI RR73 183345 -16 1115 R4DI RC1BQ 73 183430 -8 1542 3Z100PKP R4DI +05 183445 -11 1246 R4DI 9A60CBM R-01 183630 -9 1542 RG7O R4DI +07
UTC dB Audio Message 175330 -11 1826 R2EA/P R4DI -12 175400 -9 1826 R6KA R4DI +03 175430 -13 1826 R2EA/P R4DI 73 175500 -6 1826 CQ R4DI LO42 175515 +2 893 R4DI R6KA R+15 175530 -5 1826 R6KA R4DI RR73 175545 +8 893 R4DI R6KA 73 172000 -2 2275 ZL2BX R4DI -15 (x8)
UTC dB Audio Message 181430 +7 784 R4DI R2FCT R-14 (x2) 184215 -11 2398 RI1FJZ R4DI LO42 (x2) 184545 -11 2398 R5KH R4DI -08 (x2) 184645 -16 2398 CQ R4DI LO42 (x3) 184945 -16 2397 UA9LP R4DI -06 (x4) 185130 -24 1866 R4DI UA9LP 73 185130 -24 1988 R4DI IU1VJP JO30
UTC dB Audio Message 182415 -4 1080 II7MGBT R4DI -17 182915 -17 1951 G3ZRN R4DI RR73 182930 -4 2194 R4DI G3ZRN R-07 182945 -2 1951 G3ZRN R4DI RR73 183000 -16 2194 R4DI G3ZRN 73 183115 -4 1951 PD2XX R4DI -09 183130 +5 876 R4DI PD2XX R-19 183145 +2 1951 PD2XX R4DI RR73 183200 +12 876 R4DI PD2XX R-19 183215 +1 1951 PD2XX R4DI RR73 183230 +10 876 R4DI PD2XX R-19 183245 +0 1951 PD2XX R4DI RR73 183300 +13 876 R4DI PD2XX R-19 183315 +1 1951 CQ R4DI LO42 183330 +9 876 R4DI PD2XX R-19
UTC dB Audio Message 110430 -21 2194 CQ R4DI LO42 110445 -16 2193 R4DI IU4PPL JN54 110600 -17 2194 CQ R4DI LO42 (x2) 110700 -21 2194 RV6HSN R4DI -08 110945 -21 2193 R4DI R7OV R+18 165315 -18 2263 EA1IIF R4DI RR73 195700 -21 2074 CP6CL R4DI -01 (x2) 200045 -21 2074 PT9TI R4DI -10 (x2) 092545 -17 1313 R1ZH R4DI RR73 093045 -24 1601 R4DI RW6HP LN14 084330 -7 746 R4DI R6DWD -13 (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.
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