RC5F — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving RC5F, decoded by SO8OO in southeastern Poland. 8,119 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 130 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-20.
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 8,119 FT8 messages attributed to RC5F as the transmitting token by decoded message structure across 130 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (51%), followed by 40 m (27%) and 10 m (21%). The busiest six-hour window was 15:00-21:00 UTC, containing 47% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-10-20 04:50 UTC
Observed FT8 message patterns
- Attributed sample
- 8,119 messages
- Active dates
- 130 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -18 to +3 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,383, moderate (-15 to -9 dB) 2,593, strong (≥ -8 dB) 4,143.
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 RC5F 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 RC5F
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
- KO85 · 5,277 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,193 km (approx.)
- Last such locator decoded
- 2026-10-20 04:50 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 | RC5F S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-20 04:48 | 40m | +1 / - | W9HT/VP9 | - / -16 | 6 | Partial capture |
| 10-20 04:30 | 40m | -4 / - | KL7J | - / -13 | 19 | ✓ Closing fragment |
| 10-20 04:25 | 40m | - / -3 | F4JJA | -6 / - | 2 | ✓ Closing fragment |
| 10-20 04:24 | 40m | -7 / - | ON3ANY | - / - | 2 | Partial capture |
| 10-20 04:21 | 40m | -9 / -6 | F8VNU | +4 / -12 | 5 | ✓ Full exchange observed |
| 10-20 04:20 | 40m | -7 / -14 | M1PAH | -12 / -13 | 6 | ✓ Full exchange observed |
| 10-20 04:16 | 40m | -6 / - | SA2MCD | - / - | 4 | Partial capture |
| 10-19 19:40 | 40m | - / -11 | EG46PPA | -14 / - | 2 | Partial capture |
| 10-19 19:33 | 40m | - / -5 | YO3AI | -22 / - | 3 | ✓ Closing fragment |
| 10-18 19:19 | 40m | -11 / -6 | IU3FVJ | -8 / -17 | 4 | ✓ Full exchange observed |
| 10-18 19:16 | 40m | -12 / -4 | 5P0T | -15 / -20 | 4 | Partial capture |
| 10-18 19:15 | 40m | -1 / - | SQ9GAI | - / -16 | 2 | ✓ Closing fragment |
| 10-18 19:13 | 40m | -5 / - | HA9MDP | - / -18 | 3 | ✓ Closing fragment |
| 10-18 18:44 | 40m | -9 / -5 | IN3THU | +8 / -13 | 3 | ✓ Full exchange observed |
| 10-18 18:41 | 40m | +3 / - | SP9ACB | - / - | 2 | Partial capture |
| 10-18 18:37 | 40m | -2 / -8 | S55A | -4 / -14 | 5 | ✓ Full exchange observed |
| 10-18 18:36 | 40m | -1 / - | YT3M | - / -14 | 3 | ✓ Closing fragment |
| 10-18 18:33 | 40m | -6 / - | EH2026FSL | - / - | 3 | Partial capture |
| 10-18 18:32 | 40m | -3 / - | IT9IVU | - / -21 | 3 | Partial capture |
| 10-18 18:32 | 40m | -8 / -12 | AM5GC | -17 / - | 4 | Partial capture |
| 10-18 12:29 | 10m | - / -6 | DP9S | +1 / - | 4 | ✓ Closing fragment |
| 10-17 19:45 | 40m | -9 / - | IQ3TR | - / - | 6 | Partial capture |
| 10-17 19:36 | 40m | -10 / -13 | F4MVM | -19 / -12 | 4 | ✓ Full exchange observed |
| 10-17 19:32 | 40m | - / 0 | IK1MJK/P | -5 / - | 2 | Partial capture |
| 10-17 19:31 | 40m | +2 / - | PE1PYB | - / - | 2 | Partial capture |
| 10-17 19:29 | 40m | 0 / - | UA2FFD | - / - | 2 | Partial capture |
| 10-16 10:03 | 10m | -5 / - | EA3PV | - / -11 | 3 | ✓ Closing fragment |
| 10-16 10:01 | 10m | -5 / - | S79VU | - / +3 | 5 | ✓ Closing fragment |
| 10-16 09:52 | 10m | -13 / - | CS7BPG | - / -13 | 4 | ✓ Closing fragment |
| 10-16 09:47 | 10m | -11 / - | PU1PCR | - / -12 | 7 | ✓ Closing fragment |
| 10-16 09:46 | 10m | -10 / - | <...> | - / - | 3 | Partial capture |
| 10-16 09:43 | 10m | -12 / - | PY1SX | - / - | 5 | Partial capture |
| 10-16 04:18 | 40m | -4 / - | SV2LZX | - / -11 | 2 | Partial capture |
| 10-16 04:16 | 40m | -7 / - | R6AC | - / -13 | 4 | ✓ Closing fragment |
| 10-15 17:41 | 40m | -6 / - | OK2AB | - / - | 2 | Partial capture |
| 10-15 17:38 | 40m | - / -3 | OV5SP | -16 / - | 3 | Partial capture |
| 10-15 17:36 | 40m | -7 / - | UI7N | +1 / - | 2 | ✓ Closing observed |
| 10-15 17:34 | 40m | -16 / - | OV5SP | - / - | 2 | Partial capture |
| 10-15 17:32 | 40m | -14 / - | 9A2DM | -5 / -13 | 4 | ✓ Closing observed |
| 10-15 17:31 | 40m | -16 / - | RW6B | - / - | 2 | Partial capture |
| 10-15 17:25 | 40m | -11 / +5 | OH3CD | -3 / -8 | 4 | ✓ Full exchange observed |
| 10-15 17:22 | 40m | -9 / - | RO6Z | -14 / - | 2 | ✓ Closing observed |
| 10-15 17:19 | 40m | -13 / - | RA3X | +2 / +9 | 5 | ✓ Full exchange observed |
| 10-15 15:41 | 40m | - / -7 | SP5CTY | -1 / - | 2 | Partial capture |
| 10-14 17:08 | 40m | - / -7 | PE50SCOUT | -13 / - | 2 | Partial capture |
| 10-14 17:08 | 40m | +1 / - | F4JKY/P | - / -18 | 4 | Partial capture |
| 10-14 17:06 | 40m | -11 / - | R6LPA | - / -3 | 3 | ✓ Closing fragment |
| 10-14 16:41 | 40m | -12 / - | OH6KP | -16 / -5 | 5 | ✓ Closing observed |
| 10-14 16:40 | 40m | -12 / - | LZ936BA | - / - | 2 | Partial capture |
| 10-14 04:30 | 40m | -12 / -12 | PQ5TA | -14 / -13 | 6 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 043630 -4 1067 KL7J RC5F KO85 (x8) 044815 -2 733 W9HT/VP9 RC5F KO85 (x6) 045100 -3 415 RC5F RR73; KR4LQV <...> +02
UTC dB Audio Message 100100 -3 1011 S79VU RC5F KO85 (x5) 100330 -6 1012 EA3PV RC5F KO85 (x3) 100700 -16 1067 F4NKF RC5F RR73 121715 -23 1715 RC5F EA7O -05 122715 -16 1370 RC5F EA4EUO RR73 122930 +3 730 RC5F DP9S -06 (x4)
UTC dB Audio Message 201115 -13 257 RI1FJL RC5F KO85 (x7) 164700 +15 2661 RC5F R1943OD +09 165200 -20 956 RG5G RC5F KO85 165215 +1 1046 RC5F RG5G -04 165230 -9 958 RG5G RC5F R-13 (x2) 191945 -14 992 UA4FKT RC5F KO85 055200 -16 1181 RC5F ON3ML -12
UTC dB Audio Message 201030 -11 2082 RC5F PE1NPS JO22 (x3)
UTC dB Audio Message 200215 -12 1770 RC5F M0ITJ -06 (x2) 200345 -10 827 EA8AFB RC5F KO85 (x2) 200445 -7 827 HA7SJX RC5F KO85 (x2) 200615 -4 827 Z30A RC5F KO85 (x3) 201100 -12 1121 RC5F IT9KVQ -06 201115 -2 962 IT9KVQ RC5F KO85 201130 -14 1121 RC5F IT9KVQ -04 201200 -11 1183 DG4MDO RC5F KO85 (x2) 201345 -18 1182 NP4TX RC5F KO85
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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