RJ3T — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RJ3T, decoded by SO8OO in southeastern Poland. 341 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-21.
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 341 FT8 messages attributed to RJ3T as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (60%), followed by 40 m (29%) and 20 m (7%). Most decodes (90%) 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 -12 dB.
Overview
Bands
Last attributed message: 2026-09-21 05:02 UTC
Observed FT8 message patterns
- Attributed sample
- 341 messages
- Active dates
- 14 UTC dates
- Estimated median S/N
- -12 dB
- Estimated 10th-90th percentile
- -19 to -4 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 89, moderate (-15 to -9 dB) 169, strong (≥ -8 dB) 83.
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 RJ3T 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 RJ3T
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
- LO26 · 108 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,698 km (approx.)
- Last such locator decoded
- 2026-08-15 19:12 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 | RJ3T S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-21 05:02 | 40m | -15 / - | RD3FY | -12 / - | 2 | ✓ Closing observed |
| 09-21 04:59 | 40m | -23 / -13 | DL2RPN | +4 / -10 | 4 | ✓ Full exchange observed |
| 09-21 04:55 | 40m | -24 / - | R3AP | -1 / +10 | 2 | Partial capture |
| 09-20 19:24 | 40m | -2 / - | UB7K | - / +7 | 2 | ✓ Closing fragment |
| 09-20 17:08 | 40m | - / -11 | RV1CC | -8 / - | 2 | ✓ Closing fragment |
| 09-20 17:03 | 40m | - / -14 | RV3DLV | +10 / - | 2 | ✓ Closing fragment |
| 09-20 06:14 | 40m | - / -14 | YO4NT | +2 / - | 2 | ✓ Closing fragment |
| 09-19 20:03 | 80m | - / -3 | UA4UAR | 0 / - | 2 | ✓ Closing fragment |
| 09-19 18:02 | 40m | - / - | RL3T | -12 / - | 4 | Partial capture |
| 09-19 17:48 | 40m | -8 / -7 | R6ZEJ | +6 / -2 | 3 | ✓ Full exchange observed |
| 09-19 17:46 | 40m | -8 / -8 | RA9SBN | -15 / -16 | 4 | ✓ Full exchange observed |
| 09-19 16:09 | 40m | -18 / -5 | RU3FM | -8 / -1 | 3 | Partial capture |
| 09-19 16:09 | 40m | -11 / - | R4AFR | -9 / - | 2 | ✓ Closing observed |
| 09-19 16:09 | 40m | - / -1 | RA3TVW | -10 / - | 2 | Partial capture |
| 09-19 15:54 | 40m | -2 / - | RT4A/P | - / 0 | 3 | ✓ Closing fragment |
| 09-19 15:42 | 40m | -10 / - | RT4A/P | - / -3 | 14 | Partial capture |
| 09-19 15:40 | 40m | - / - | R4HNT | +1 / - | 2 | ✓ Closing fragment |
| 09-19 15:37 | 40m | -4 / - | RV3SBS | - / -19 | 2 | ✓ Closing fragment |
| 09-19 15:34 | 40m | -6 / -4 | UA4PPQ | -6 / +4 | 4 | ✓ Full exchange observed |
| 09-19 15:28 | 40m | -3 / - | R9HEP/P | - / -6 | 10 | ✓ Closing fragment |
| 09-19 15:25 | 40m | -12 / - | R9ODK | - / -1 | 3 | Partial capture |
| 09-19 15:21 | 40m | -9 / - | RX3MM | - / +5 | 2 | ✓ Closing fragment |
| 09-19 15:03 | 40m | -8 / - | UA3IDQ | -7 / - | 2 | ✓ Closing observed |
| 09-19 15:02 | 40m | -3 / - | RA4CIY | - / +7 | 2 | ✓ Closing fragment |
| 09-19 15:00 | 40m | -6 / +3 | R3RRC/P | -21 / +6 | 4 | ✓ Full exchange observed |
| 09-05 18:22 | 160m | - / -13 | R3GO | -2 / - | 2 | ✓ Closing fragment |
| 09-05 18:17 | 160m | - / -15 | RO7A | -9 / - | 3 | ✓ Closing fragment |
| 09-05 18:07 | 160m | - / -13 | RA3XDX | -4 / - | 2 | ✓ Closing fragment |
| 09-05 18:04 | 160m | - / -6 | RZ3DW | +16 / - | 2 | ✓ Closing fragment |
| 09-05 17:59 | 160m | - / -7 | RN3TT | -8 / - | 2 | ✓ Closing fragment |
| 09-05 17:24 | 160m | - / - | RX6CC | -20 / - | 2 | ✓ Closing fragment |
| 09-05 17:17 | 160m | - / -16 | UA3SCF | -12 / - | 2 | ✓ Closing fragment |
| 09-05 16:38 | 160m | - / -12 | RM3ZR | -10 / - | 3 | ✓ Closing fragment |
| 09-05 16:19 | 80m | - / -9 | R3KLE | -10 / - | 3 | ✓ Closing fragment |
| 09-05 16:14 | 80m | - / +10 | RM3TO | -6 / - | 2 | ✓ Closing fragment |
| 09-05 15:31 | 40m | -7 / +2 | RA3PGR | -14 / - | 4 | ✓ Full exchange observed |
| 09-05 15:27 | 40m | -10 / - | UA0AD | - / -20 | 2 | Partial capture |
| 09-05 15:22 | 40m | -15 / +2 | RO7A | -2 / - | 4 | ✓ Closing observed |
| 09-05 15:22 | 40m | -11 / - | R1QF | -7 / - | 2 | ✓ Closing observed |
| 09-05 15:19 | 40m | -12 / - | UA4QK | - / -13 | 2 | Partial capture |
| 09-05 15:14 | 40m | -13 / -14 | UA3SCU | -8 / +3 | 3 | ✓ Full exchange observed |
| 09-05 15:12 | 40m | -13 / - | R9CS/P | +9 / - | 5 | ✓ Full exchange observed |
| 08-29 17:25 | 80m | - / - | ES7GN | -9 / - | 4 | Partial capture |
| 08-29 17:25 | 80m | - / -11 | R9FFJ | -16 / - | 2 | Partial capture |
| 08-29 17:22 | 80m | - / -16 | DL1DXX | -9 / - | 5 | Partial capture |
| 08-22 19:29 | 160m | -14 / -17 | UA1TAN | -16 / - | 2 | ✓ Closing observed |
| 08-22 19:21 | 160m | -14 / - | R5BM/M | - / -5 | 4 | Partial capture |
| 08-22 19:20 | 160m | -12 / - | <...> | - / -5 | 2 | Partial capture |
| 08-22 19:16 | 160m | -14 / -12 | UB7K | +6 / +1 | 5 | ✓ Full exchange observed |
| 08-22 19:13 | 160m | -13 / -11 | RT2P | -8 / -2 | 4 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 170315 +15 482 RJ3T RV3DLV R-14 (x2) 170830 -7 1497 RJ3T RV1CC R-11 (x2) 192445 -4 427 UB7K RJ3T +07 (x2) 192845 -7 2767 JA0VTS RJ3T RR73 045515 -24 1742 R3AP RJ3T +10 045530 -1 1742 RJ3T R3AP R+12 045915 +4 1968 RJ3T DL2RPN JO62 045930 -23 1969 DL2RPN RJ3T -10 045945 +4 1968 RJ3T DL2RPN R-13 (x2) 050215 -15 2263 RD3FY RJ3T RR73 050230 -12 2263 RJ3T RD3FY 73
UTC dB Audio Message 172500 -4 2334 RJ3T DL1DXX -14 172530 -19 1251 RJ3T R9FFJ R-11 172530 -7 1813 RJ3T ES7GN KO28 172530 -7 2334 RJ3T DL1DXX -14 172600 -11 1814 RJ3T ES7GN KO28 172600 -10 2334 RJ3T DL1DXX -13 172630 -9 1813 RJ3T ES7GN R KO28 161445 -9 1008 RJ3T RM3TO R+10 (x2) 161900 -13 2058 RJ3T R3KLE KO91 (x3) 162515 -16 1602 RJ3T UN7LAN MO13 200345 +0 351 RJ3T UA4UAR R-03 (x2)
UTC dB Audio Message 171715 -13 1764 RJ3T UA3SCF R-16 (x2) 172445 -20 1996 RJ3T RX6CC KN96 (x2) 175945 -8 1243 RJ3T RN3TT R-07 (x2) 180415 +17 2520 RJ3T RZ3DW R-06 (x2) 180715 -7 2638 RJ3T RA3XDX R-13 (x2) 181730 -10 1958 RJ3T RO7A KN95 (x3) 182245 -4 1295 RJ3T R3GO R-13 (x2)
UTC dB Audio Message 092830 -3 2485 F5OYA/P RJ3T -13 092915 -13 2565 RJ3T F5OYA/P R-12 093015 -5 2485 R6YBU RJ3T -16 (x4) 093300 -1 2550 UB8CSU RJ3T -09 (x3) 093445 -11 2050 RJ3T UA9CK MO09 093500 -10 2050 UA9CK RJ3T +22 093515 -13 2050 RJ3T UA9CK R+05 093530 -11 2049 UA9CK RJ3T RR73 093545 -11 2049 RJ3T UA9CK 73 093645 -7 2485 R6YBU RJ3T -14
UTC dB Audio Message 072945 -6 2813 RJ3T R2EC R-01 073045 -6 2719 RJ3T UA4FKT LO23 (x3) 073945 -9 601 RJ3T R6TA LN13 (x2) 075245 -2 2930 RJ3T RO3ZR KO80 (x2) 080115 +7 1125 RJ3T DL3MIB JN57 (x7)
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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