RF9C — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RF9C, decoded by SO8OO in southeastern Poland. 162 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-19.
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 162 FT8 messages attributed to RF9C as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (59%), followed by 80 m (37%) and 40 m (3%). The busiest six-hour window was 16:00-22:00 UTC, containing 41% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.
Overview
Bands
Last attributed message: 2026-09-19 13:37 UTC
Observed FT8 message patterns
- Attributed sample
- 162 messages
- Active dates
- 26 UTC dates
- Estimated median S/N
- -9 dB
- Estimated 10th-90th percentile
- -17 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 26, moderate (-15 to -9 dB) 62, strong (≥ -8 dB) 74.
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 RF9C 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 RF9C
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 · 42 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,670 km (approx.)
- Last such locator decoded
- 2026-09-12 20:45 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 | RF9C S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 13:37 | 40m | -10 / - | RM0F/P | - / -12 | 2 | Partial capture |
| 09-12 20:34 | 80m | -15 / +4 | R3ZP | -11 / -13 | 3 | ✓ Full exchange observed |
| 09-12 20:34 | 80m | - / - | YT5DL | +12 / - | 3 | Partial capture |
| 09-12 20:31 | 80m | -14 / -9 | UA3FH | -2 / -15 | 6 | ✓ Full exchange observed |
| 09-12 20:31 | 80m | - / - | EA1IOK | -6 / - | 4 | Partial capture |
| 09-12 20:30 | 80m | -18 / - | R4SCB | - / -3 | 2 | ✓ Closing fragment |
| 09-12 20:29 | 80m | - / - | PA3KUS | +4 / - | 6 | Partial capture |
| 09-12 20:28 | 80m | - / - | IK6GTF | -8 / - | 2 | Partial capture |
| 09-12 20:20 | 160m | - / -10 | RG4D/P | -8 / - | 2 | ✓ Closing fragment |
| 09-12 20:19 | 80m | - / - | PA3KUS | -10 / - | 6 | Partial capture |
| 09-12 20:10 | 80m | - / +1 | R5ACQ | -5 / - | 2 | ✓ Closing fragment |
| 09-12 20:07 | 160m | - / -22 | RG4D/P | -8 / - | 4 | Partial capture |
| 09-12 20:03 | 40m | - / - | US5ZCO | -4 / - | 2 | Partial capture |
| 09-12 20:03 | 80m | - / - | LA1AAA | +4 / - | 2 | Partial capture |
| 09-12 20:02 | 80m | - / +2 | OG5B | -9 / - | 2 | ✓ Closing fragment |
| 09-12 20:01 | 80m | - / - | OE4RDV | +1 / - | 3 | Partial capture |
| 09-12 19:56 | 80m | - / -14 | SV6JHA | +4 / - | 4 | ✓ Closing fragment |
| 09-12 19:54 | 160m | - / -17 | RL3BZ | +6 / - | 2 | ✓ Closing fragment |
| 09-12 19:53 | 80m | -8 / - | R3PLA | -4 / -8 | 3 | ✓ Closing observed |
| 09-12 19:52 | 80m | -12 / - | R4RJ | -6 / 0 | 3 | ✓ Closing observed |
| 09-12 19:43 | 80m | -18 / - | UB3ADO/P | -1 / -14 | 2 | ✓ Closing observed |
| 09-12 19:40 | 80m | - / -25 | DL5RDP | +6 / - | 5 | ✓ Closing fragment |
| 09-12 19:40 | 80m | -9 / 0 | UA3SCU | -8 / - | 3 | ✓ Closing observed |
| 09-12 17:17 | 80m | - / -6 | R2SN | +4 / - | 4 | ✓ Closing fragment |
| 09-12 17:15 | 80m | - / - | OK1FRG | +12 / - | 2 | Partial capture |
| 09-12 17:13 | 80m | - / -14 | R6ZCE | -4 / - | 2 | Partial capture |
| 09-12 17:13 | 80m | -9 / - | R4HBC | - / -11 | 2 | ✓ Closing fragment |
| 09-12 17:10 | 80m | -11 / - | RQ3D | - / -15 | 2 | Partial capture |
| 09-12 17:07 | 80m | -8 / -8 | RA3TK | -10 / -13 | 3 | ✓ Full exchange observed |
| 09-07 14:50 | 40m | - / +7 | R2YW | -6 / - | 4 | ✓ Closing fragment |
| 09-02 15:56 | 80m | - / - | R9CS/P | -2 / - | 2 | ✓ Closing fragment |
| 08-30 10:16 | 20m | -8 / - | R3WDW/P | - / -1 | 2 | ✓ Closing fragment |
| 08-29 18:20 | 80m | - / -21 | 9A3K | +6 / - | 3 | ✓ Closing fragment |
| 08-22 08:53 | 20m | - / +3 | UF4S/P | -7 / - | 2 | ✓ Closing fragment |
| 08-20 14:11 | 20m | - / - | SP4TKA | 0 / - | 2 | Partial capture |
| 08-20 14:08 | 20m | -5 / - | R3PLN/P | -18 / -20 | 7 | ✓ Closing observed |
| 08-20 14:05 | 20m | -10 / - | R3DFE/M | - / -2 | 2 | Partial capture |
| 08-17 14:20 | 20m | - / -6 | DH1NGL | -18 / - | 2 | Partial capture |
| 08-17 14:16 | 20m | -15 / - | <...> | - / - | 4 | Partial capture |
| 08-14 20:36 | 80m | -2 / - | US1EA | +4 / -4 | 6 | ✓ Full exchange observed |
| 08-14 20:35 | 80m | -1 / - | R1WCK | - / -15 | 2 | ✓ Closing fragment |
| 08-14 20:32 | 80m | -4 / - | R3WDW/P | -16 / -12 | 6 | ✓ Full exchange observed |
| 08-14 18:47 | 80m | -6 / -4 | S59A | +20 / - | 3 | ✓ Closing observed |
| 08-14 18:46 | 80m | -8 / - | RA0SCA | - / -10 | 2 | ✓ Closing fragment |
| 08-14 08:29 | 20m | -7 / - | <...> | -8 / - | 4 | Partial capture |
| 08-12 06:33 | 20m | -9 / - | <...> | - / -9 | 2 | Partial capture |
| 08-12 06:27 | 20m | -12 / - | <...> | - / - | 5 | Partial capture |
| 08-11 11:38 | 20m | -14 / - | RA3LC | - / -3 | 2 | ✓ Closing fragment |
| 08-05 10:13 | 20m | - / - | IU6STP | -10 / - | 2 | Partial capture |
| 08-04 08:31 | 20m | - / -15 | CT3MD | -15 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 145030 -2 1123 RF9C R2YW +07 (x4) 200345 -3 1839 RF9C US5ZCO KN58 (x2) 132615 -4 2208 RF9C R3WDW/P -07 133715 -11 2522 RM0F/P RF9C -12 (x2)
UTC dB Audio Message 203245 -14 2235 UA3FH RF9C RR73 203300 -7 643 RF9C UA3FH 73 203315 -16 2235 CQ RF9C MO06 203400 +10 2236 RF9C YT5DL KN04 (x2) 203445 -15 2235 R3ZP RF9C -13 203500 +11 2236 RF9C YT5DL KN04 203500 -17 2095 RF9C R3ZP R+04 (x2) 203645 -20 2235 CQ RF9C MO06 203930 -9 1783 RF9C ON5AM -17 204015 -14 2236 RV3IN RF9C -09 204045 -16 2236 CQ RF9C MO06 (x2) 204615 -2 962 RF9C RU3NCW R+08
UTC dB Audio Message 195415 +7 1525 RF9C RL3BZ -17 (x2) 200700 -10 2466 RF9C RG4D/P R-22 (x6)
UTC dB Audio Message 140645 -10 1330 R3DFE/M RF9C R-02 140700 -9 2961 RF9C RR73; DL8WEM <...> -10 140815 -9 1329 R3PLN/P RF9C MO06 (x3) 140930 -18 1462 RF9C R3PLN/P RR73 140945 -3 1329 R3PLN/P RF9C R-20 141000 -18 1462 RF9C R3PLN/P RR73 141015 +0 1329 R3PLN/P RF9C 73 141100 +1 329 RF9C SP4TKA KO14 (x2) 085300 -7 1048 RF9C UF4S/P R+03 (x2) 101600 -9 2772 R3WDW/P RF9C -01 (x2)
UTC dB Audio Message 073645 -14 1514 RF9C R6ZIG 73 061100 -22 1437 RF9C RA3VX +03 061315 -4 2329 RF9C PD0CIF JO32 071045 -2 487 RF9C DK7UY JO44 (x2) 073845 -18 1527 RF9C IS0AEL +03 (x4) 094345 -14 2294 RF9C UA3WG KO71 134445 -23 1660 RF9C RT6O -08 062600 -8 1053 RF9C RT3K +01 (x4)
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