RV9CX — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RV9CX, decoded by SO8OO in southeastern Poland. 1,747 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 78 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-04.
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 1,747 FT8 messages attributed to RV9CX as the transmitting token by decoded message structure across 78 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (30%), followed by 40 m (25%) and 80 m (20%). Most decodes (63%) 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 -11.4 dB.
Overview
Bands
Last attributed message: 2026-10-04 20:31 UTC
Observed FT8 message patterns
- Attributed sample
- 1,747 messages
- Active dates
- 78 UTC dates
- Estimated median S/N
- -11.4 dB
- Estimated 10th-90th percentile
- -18 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 412, moderate (-15 to -9 dB) 741, strong (≥ -8 dB) 594.
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 RV9CX 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 RV9CX
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
- MO06 · 319 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,670 km (approx.)
- Last such locator decoded
- 2026-10-04 20:31 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 | RV9CX S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-04 20:31 | 160m | -2 / - | ZS1J | - / - | 2 | Partial capture |
| 10-04 18:40 | 160m | - / - | SM1NJC | -8 / - | 2 | Partial capture |
| 10-04 18:38 | 160m | -18 / -10 | R3YCJ | -14 / -10 | 4 | ✓ Full exchange observed |
| 10-04 03:06 | 40m | -13 / -3 | RD7O | -3 / -3 | 5 | ✓ Full exchange observed |
| 10-04 00:35 | 160m | -10 / 0 | RO2E/P | 0 / -5 | 3 | ✓ Full exchange observed |
| 10-04 00:31 | 160m | -10 / +7 | RO2E/P | 0 / -5 | 3 | Partial capture |
| 10-03 22:04 | 160m | -14 / -7 | UA3AGW | +12 / +10 | 4 | ✓ Full exchange observed |
| 10-03 20:30 | 160m | -18 / -11 | RM5P | -7 / -14 | 4 | ✓ Full exchange observed |
| 10-03 16:36 | 40m | - / -16 | R2DDA | -2 / - | 2 | ✓ Closing fragment |
| 10-03 12:06 | 10m | +6 / - | R2FEA | - / -2 | 2 | ✓ Closing fragment |
| 10-02 20:09 | 160m | -22 / -20 | R7CD | -7 / - | 6 | ✓ Closing observed |
| 10-02 20:08 | 160m | - / - | IU5HIU | -14 / - | 3 | Partial capture |
| 10-02 20:08 | 160m | -21 / -12 | RM5P | -7 / -13 | 4 | Partial capture |
| 10-02 19:59 | 160m | - / - | 9A5E | -6 / - | 3 | Partial capture |
| 10-02 19:49 | 160m | - / - | DL7ET | -14 / - | 2 | Partial capture |
| 10-02 19:48 | 160m | -18 / -6 | RO2E/M | -15 / -20 | 2 | Partial capture |
| 10-02 19:14 | 40m | -14 / - | IQ9SZ/3 | - / -11 | 2 | Partial capture |
| 10-02 16:55 | 160m | - / -21 | IW4AOT | +4 / - | 3 | Partial capture |
| 10-02 16:24 | 80m | -7 / - | R3PA | -8 / -6 | 3 | ✓ Closing observed |
| 10-02 15:56 | 80m | -6 / - | R9HEN | - / -11 | 2 | ✓ Closing fragment |
| 10-02 15:53 | 80m | -8 / - | RM8CZ | - / -7 | 2 | ✓ Closing fragment |
| 10-01 19:11 | 160m | - / - | E77AR | -13 / - | 3 | Partial capture |
| 09-30 17:16 | 80m | -11 / -6 | R2AVW | -6 / -5 | 4 | ✓ Full exchange observed |
| 09-27 22:50 | 80m | - / - | DL9KM | +1 / - | 7 | Partial capture |
| 09-27 22:50 | 80m | -4 / - | RZ3C | - / -5 | 2 | ✓ Closing fragment |
| 09-27 20:47 | 80m | -10 / - | UB1AUW | - / -5 | 2 | ✓ Closing fragment |
| 09-27 20:11 | 80m | - / - | F4HAB | -2 / - | 3 | Partial capture |
| 09-27 20:11 | 80m | -2 / - | R9OX | - / -9 | 2 | ✓ Closing fragment |
| 09-27 17:41 | 80m | -16 / -8 | R3DQT | -7 / -4 | 3 | ✓ Full exchange observed |
| 09-27 16:52 | 80m | -8 / -4 | R6JAG | -4 / - | 3 | ✓ Closing observed |
| 09-27 16:47 | 80m | -10 / - | UB3KGW | - / -12 | 2 | ✓ Closing fragment |
| 09-27 16:40 | 80m | -11 / -12 | R70SAB | -7 / -1 | 4 | ✓ Full exchange observed |
| 09-27 16:38 | 80m | - / -12 | DG0OBU | -12 / - | 3 | Partial capture |
| 09-27 16:36 | 80m | 0 / - | UN7PME | - / -9 | 2 | ✓ Closing fragment |
| 09-27 16:35 | 80m | -4 / -6 | RO6OP | -5 / -1 | 6 | ✓ Full exchange observed |
| 09-27 16:31 | 80m | -5 / - | UF3T | +7 / -1 | 5 | Partial capture |
| 09-27 16:24 | 80m | -4 / -7 | RD7X | -17 / -2 | 4 | ✓ Full exchange observed |
| 09-27 00:49 | 80m | -10 / - | R9ON | - / -16 | 2 | ✓ Closing fragment |
| 09-27 00:48 | 80m | -6 / -15 | UA6Q/M | +15 / -1 | 9 | Partial capture |
| 09-26 19:15 | 160m | - / - | IZ4DYU | -16 / - | 2 | Partial capture |
| 09-26 16:39 | 160m | - / -18 | UA3QQG | -20 / - | 3 | Partial capture |
| 09-26 15:53 | 80m | - / -8 | UF3T | +3 / - | 2 | ✓ Closing fragment |
| 09-26 15:44 | 80m | - / -8 | UF3T | +2 / - | 2 | Partial capture |
| 09-26 14:50 | 40m | - / -18 | SQ9AQQ | -15 / - | 3 | Partial capture |
| 09-24 23:42 | 160m | -12 / -9 | RA1CY | -15 / -19 | 3 | ✓ Full exchange observed |
| 09-24 20:38 | 160m | -14 / - | RK6OQ | - / -6 | 2 | ✓ Closing fragment |
| 09-23 17:26 | 160m | -21 / - | <...> | - / - | 2 | Partial capture |
| 09-23 17:08 | 160m | -19 / - | <...> | - / - | 2 | Partial capture |
| 09-23 14:18 | 40m | -14 / - | R8PG/P | - / +3 | 2 | ✓ Closing fragment |
| 09-23 14:17 | 40m | -13 / - | RD9M/3 | - / 0 | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 003115 -10 2180 RO2E/P RV9CX -05 003130 +3 2346 RV9CX RO2E/P R+07 (x2) 003545 -10 2180 RO2E/P RV9CX -05 003600 +0 2354 RV9CX RO2E/P R+00 003615 -11 2181 RO2E/P RV9CX RR73 003630 -4 2354 RV9CX RR73; RA6WF <...> -14 183800 -13 1051 RV9CX R3YCJ -10 183815 -18 2350 R3YCJ RV9CX R-10 183830 -17 1051 RV9CX R3YCJ -10 (x2) 184030 -9 2216 RV9CX SM1NJC JO97 (x2) 203115 +0 1895 ZS1J RV9CX MO06 (x2)
UTC dB Audio Message 141845 -13 2308 R8PG/P RV9CX RR73 141930 -10 2152 RV9CX R6OIW KN86 145000 -15 2351 RV9CX SQ9AQQ R-18 (x3) 145215 -13 2258 RV9CX R4RZ R-08 191415 -16 2394 IQ9SZ/3 RV9CX -11 (x2) 163615 +0 870 RV9CX R2DDA R-16 (x2) 030645 -13 2387 RD7O RV9CX -03 030700 +1 1842 RV9CX RD7O R-03 030715 -13 2386 RD7O RV9CX RR73 030730 -7 1842 RV9CX RD7O R-03 (x2)
UTC dB Audio Message 112900 -5 464 RV9CX EA8DEG RR73 112900 -14 2410 RV9CX DN9AEM JN59 153545 -16 2328 RV9CX EA8AQV IL28 142100 -10 1421 RV9CX IK6GPZ JN62 (x8) 053800 -12 1814 RV9CX RQ6Z R+03 (x2) 120645 +7 2362 R2FEA RV9CX -02 (x2)
UTC dB Audio Message 171745 -9 948 RV9CX R2AVW R-06 (x3) 175745 -14 2004 R4CCW RV9CX -04 183830 -12 2005 UB2FDL RV9CX -18 (x2) 153530 -19 2226 R9HEN RV9CX -15 155315 -6 2225 RM8CZ RV9CX -07 (x2) 155630 -9 2224 R9HEN RV9CX -11 (x2) 161915 -5 2225 UB3BFE RV9CX -24 162430 -6 2224 R3PA RV9CX -06 (x2) 162515 -8 1768 RV9CX R3PA 73
UTC dB Audio Message 195515 -6 2423 TJ1GD RV9CX -14 (x3) 202445 +2 2422 R7RCG RV9CX +00 000515 -2 2342 RV9CX XQ1KK R-14 (x2) 134445 -13 2275 <R3DFE/M> RV9CX -03 134500 -7 2960 RV9CX R3DFE/M R+14 062245 +0 2275 R4HLO RV9CX +00 063215 -3 2275 RA4CEH RV9CX -02 064845 -14 2275 RA3BU RV9CX -03 (x2) 075015 -12 2318 RV9CX R3RR R-16 075615 -7 2274 RN3AKL RV9CX -02 075715 -13 2275 UB4CKD RV9CX RR73
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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