RC9F — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RC9F, decoded by SO8OO in southeastern Poland. 551 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 44 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-17.
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 551 FT8 messages attributed to RC9F as the transmitting token by decoded message structure across 44 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (34%), followed by 160 m (32%) and 20 m (21%). Most decodes (70%) 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 -9 dB.
Overview
Bands
Last attributed message: 2026-09-17 17:16 UTC
Observed FT8 message patterns
- Attributed sample
- 551 messages
- Active dates
- 44 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -19 to -1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 120, moderate (-15 to -9 dB) 179, strong (≥ -8 dB) 252.
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 RC9F 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 RC9F
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
- LO88 · 226 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,444 km (approx.)
- Last such locator decoded
- 2026-09-17 17:15 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 | RC9F S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-17 17:16 | 160m | -12 / - | RA3RGQ | - / -16 | 2 | ✓ Closing fragment |
| 09-17 17:03 | 80m | -2 / - | RA3M | -7 / -11 | 4 | ✓ Closing observed |
| 09-17 17:03 | 80m | - / -5 | RQ6Z | -16 / - | 2 | Partial capture |
| 09-17 17:02 | 80m | -7 / -3 | R2PT | +1 / - | 4 | ✓ Closing observed |
| 09-17 16:50 | 160m | -18 / - | UB8CQC/P | - / -5 | 2 | Partial capture |
| 09-17 16:41 | 160m | -14 / - | UB8CQC/P | - / -13 | 2 | ✓ Closing fragment |
| 09-17 16:39 | 160m | -22 / - | <...> | - / - | 2 | Partial capture |
| 09-17 04:54 | 40m | - / - | DL2RPN | +9 / - | 10 | Partial capture |
| 09-16 23:50 | 160m | -8 / - | LB1UK | - / -18 | 5 | ✓ Closing fragment |
| 09-16 23:48 | 160m | -9 / +2 | RA3WY | -6 / -11 | 5 | ✓ Full exchange observed |
| 09-16 23:38 | 160m | -4 / - | UX7VA | - / -12 | 3 | ✓ Closing fragment |
| 09-16 23:34 | 160m | -8 / - | 8S2C | - / -19 | 3 | ✓ Closing fragment |
| 09-16 23:34 | 160m | -7 / -8 | IZ6HAO | +4 / -12 | 6 | ✓ Full exchange observed |
| 09-16 23:28 | 160m | -4 / - | RD9U | - / 0 | 2 | ✓ Closing fragment |
| 09-16 23:26 | 160m | -6 / -3 | DF2RG | -10 / -14 | 6 | ✓ Full exchange observed |
| 09-16 23:24 | 160m | -5 / - | 4L7T | -12 / -18 | 4 | ✓ Closing observed |
| 09-16 23:23 | 160m | -9 / -7 | 9A5E | +8 / -12 | 9 | ✓ Full exchange observed |
| 09-16 23:23 | 160m | -8 / - | CT2GQA | -24 / -20 | 4 | ✓ Closing observed |
| 09-16 23:11 | 160m | -14 / - | RI1FJZ | - / -18 | 5 | ✓ Closing fragment |
| 09-16 23:09 | 160m | -12 / - | DB100FT | - / -20 | 2 | Partial capture |
| 09-16 17:42 | 160m | - / - | RV6ANA | -18 / - | 6 | Partial capture |
| 09-16 17:40 | 160m | -18 / -19 | YO2MAX | +2 / -22 | 7 | ✓ Full exchange observed |
| 09-16 17:36 | 160m | - / - | RV6ANA | -21 / - | 5 | Partial capture |
| 09-16 17:35 | 160m | - / -16 | SQ7LQT | -6 / - | 3 | Partial capture |
| 09-16 17:35 | 160m | -22 / -10 | OM3SX | +7 / -18 | 6 | ✓ Full exchange observed |
| 09-16 17:16 | 80m | - / - | RO7A | -8 / - | 3 | Partial capture |
| 09-16 17:16 | 80m | -14 / - | RM9WN | - / -1 | 2 | ✓ Closing fragment |
| 09-16 13:16 | 40m | -12 / - | DS2MGT | - / -17 | 3 | ✓ Closing fragment |
| 09-16 13:14 | 40m | -10 / - | R3WDW/P | -8 / -4 | 5 | ✓ Full exchange observed |
| 09-15 16:53 | 160m | -12 / - | UB8FDN | - / -12 | 2 | ✓ Closing fragment |
| 09-15 16:52 | 160m | -18 / - | RY2A | - / -13 | 2 | ✓ Closing fragment |
| 09-15 16:49 | 160m | -20 / +5 | UA3D | +5 / - | 4 | ✓ Closing observed |
| 09-15 16:46 | 160m | -16 / -9 | R2DRE | -20 / -16 | 4 | ✓ Full exchange observed |
| 09-15 16:43 | 80m | -11 / - | RJ6ON | - / - | 2 | Partial capture |
| 09-15 16:40 | 80m | -12 / - | JG7EVV | - / -18 | 4 | ✓ Closing fragment |
| 09-15 16:37 | 80m | -12 / -14 | RK6DZ | -14 / -18 | 5 | ✓ Full exchange observed |
| 09-15 16:34 | 80m | -12 / - | UA3RBM | - / -9 | 2 | ✓ Closing fragment |
| 09-15 16:32 | 80m | -11 / - | RD9U | - / -2 | 2 | ✓ Closing fragment |
| 09-15 16:32 | 80m | -10 / +3 | UA3QNA | +9 / -1 | 5 | ✓ Full exchange observed |
| 09-15 16:31 | 80m | -8 / -2 | RV3GZ | -15 / -19 | 5 | ✓ Full exchange observed |
| 09-13 16:46 | 40m | -8 / - | R3DIK/M | - / - | 2 | Partial capture |
| 09-04 04:43 | 40m | -16 / - | R3IX | - / 0 | 2 | ✓ Closing fragment |
| 09-04 04:39 | 40m | -14 / -11 | OA4ENG | -16 / -18 | 5 | ✓ Full exchange observed |
| 09-03 18:39 | 160m | -17 / - | RC9WC | - / -21 | 2 | ✓ Closing fragment |
| 09-03 18:39 | 160m | - / - | F4EZJ | -10 / - | 2 | Partial capture |
| 09-03 18:36 | 160m | -8 / - | RI1FJL | - / - | 3 | ✓ Closing fragment |
| 09-03 18:13 | 80m | +2 / - | R9FFJ | -22 / +2 | 3 | Partial capture |
| 09-03 18:11 | 80m | -2 / -5 | RX3DRC | -16 / - | 3 | ✓ Closing observed |
| 09-03 18:09 | 80m | -2 / - | R4DD | -12 / -5 | 3 | ✓ Closing observed |
| 09-03 17:53 | 160m | -13 / -12 | SV1EKI | -14 / -18 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 000200 -8 1548 CQ RC9F LO88 (x3) 163930 -23 2054 <...> RC9F LO88 (x2) 164100 -16 2054 UB8CQC/P RC9F R-13 (x3) 165030 -15 1585 RC9F RD1A/7 +08 165045 -19 2054 UB8CQC/P RC9F R-05 171400 -14 1996 CQ RC9F LO88 (x3) 171600 -12 1997 RA3RGQ RC9F -16 (x2)
UTC dB Audio Message 163600 -9 2134 CQ RC9F LO88 (x3) 170215 +2 1385 RC9F R2PT KO84 (x2) 170300 -7 1800 R2PT RC9F RR73 170315 +0 1385 RC9F R2PT 73 170345 -13 484 RC9F RQ6Z -05 170345 -7 1872 RC9F RA3M RR73 170400 -2 1801 RA3M RC9F R-11 170415 -6 1872 RC9F RA3M RR73 170445 -18 484 RC9F RQ6Z -05 170445 -9 1872 RC9F RA3M RR73 170800 -7 1800 CQ RC9F LO88 170945 -7 1307 RC9F R7AW -10
UTC dB Audio Message 131530 -9 2257 R3WDW/P RC9F 73 131630 -10 2257 DS2MGT RC9F R-17 (x3) 045445 +9 2352 RC9F DL2RPN JO62 (x7) 045830 -18 1587 UB4HPQ RC9F RR73 045845 +12 2352 RC9F DL2RPN JO62 (x3)
UTC dB Audio Message 054730 -17 1818 ZY7F RC9F R-11 (x3) 054845 +0 2337 RC9F EA5HEU JN00 054930 -10 1817 EA5HEU RC9F -18 054945 -6 2337 RC9F EA5HEU R-21 055000 -11 1818 EA5HEU RC9F RR73 055015 -12 2456 RC9F 9A3K JN65 055030 -14 1818 9A3K RC9F -07 055045 -11 2456 RC9F 9A3K R-07 055100 -14 1818 9A3K RC9F RR73 055115 +2 2456 RC9F 9A3K 73 080430 -1 1671 <...> RC9F LO88 080515 -7 2483 RC9F R5BM/M -08 (x2)
UTC dB Audio Message 053845 -3 2746 RC9F R6ML 73 053915 -8 517 RC9F R6OU KN87 081230 -7 2310 CQ RC9F LO88 081300 -6 2310 RX3ASQ RC9F -15 (x2) 081400 -8 2311 RV3SBS RC9F -07 (x2) 081700 -7 2312 CQ RC9F LO88 081715 -6 2311 RC9F RN6MA +03 (x3) 081815 -19 2194 RC9F RL1B -05 081845 -2 2311 RC9F RN6MA +03 072430 -16 2090 RC9F RT6Z -11 053600 -20 1770 RC9F R6ZIG 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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee