RY4C — 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 RY4C, decoded by SO8OO in southeastern Poland. 432 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-07-20 and 2026-10-11.
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 432 FT8 messages attributed to RY4C as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (40%), followed by 80 m (37%) and 40 m (18%). Most decodes (72%) fell within the six-hour window 13:00-19:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -3.5 dB.
Overview
Bands
Last attributed message: 2026-10-11 14:24 UTC
Observed FT8 message patterns
- Attributed sample
- 432 messages
- Active dates
- 13 UTC dates
- Estimated median S/N
- -3.5 dB
- Estimated 10th-90th percentile
- -16 to +9 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 46, moderate (-15 to -9 dB) 104, strong (≥ -8 dB) 282.
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 RY4C 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 RY4C
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
- LO42 · 153 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,905 km (approx.)
- Last such locator decoded
- 2026-10-11 14:22 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 | RY4C S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-11 14:21 | 80m | -7 / - | 9V9XU | - / - | 2 | Partial capture |
| 10-11 14:12 | 80m | -22 / - | JH3IMR | - / -12 | 3 | ✓ Closing fragment |
| 10-11 13:57 | 40m | -15 / - | UA0JBX | - / - | 3 | Partial capture |
| 10-11 13:49 | 40m | -6 / - | 3D2HM | - / -19 | 4 | ✓ Closing fragment |
| 10-11 13:47 | 40m | -10 / - | UG4I | - / -1 | 2 | ✓ Closing fragment |
| 10-11 13:46 | 40m | - / - | DJ0MAB | -10 / - | 2 | Partial capture |
| 10-11 13:41 | 40m | -13 / - | YJ1JXZ | - / - | 2 | Partial capture |
| 10-11 13:37 | 40m | -18 / - | UB0SMX/P | - / -8 | 2 | ✓ Closing fragment |
| 10-06 17:45 | 160m | +2 / - | RZ0SW | - / -13 | 2 | ✓ Closing fragment |
| 10-06 17:40 | 160m | 0 / -6 | DJ9HX | +9 / -6 | 5 | ✓ Full exchange observed |
| 10-06 17:40 | 160m | - / - | DL9KM | -16 / - | 5 | Partial capture |
| 10-06 17:39 | 160m | -13 / -5 | R2DRE | -4 / - | 5 | ✓ Closing observed |
| 10-06 17:37 | 160m | -8 / -9 | R1BLO/P | -18 / -14 | 5 | ✓ Full exchange observed |
| 10-06 17:36 | 160m | -10 / -6 | R2FC | +8 / -6 | 5 | ✓ Full exchange observed |
| 10-06 17:33 | 160m | -10 / - | R1QBQ | - / -17 | 2 | ✓ Closing fragment |
| 10-06 17:31 | 160m | -2 / - | UG5F | -18 / -6 | 6 | ✓ Full exchange observed |
| 10-06 17:30 | 160m | 0 / -6 | SV2AEL | 0 / -3 | 5 | ✓ Full exchange observed |
| 10-06 17:28 | 160m | -5 / - | R9FFJ | - / -19 | 2 | ✓ Closing fragment |
| 10-06 17:27 | 160m | -7 / - | UN7LAN | - / -1 | 2 | ✓ Closing fragment |
| 10-06 17:26 | 160m | 0 / - | UN7CBY | - / 0 | 2 | ✓ Closing fragment |
| 10-06 17:23 | 80m | - / - | UC6D | -3 / - | 4 | Partial capture |
| 10-06 17:19 | 80m | -6 / - | RG6OR | - / -8 | 2 | ✓ Closing fragment |
| 10-06 17:16 | 80m | -5 / - | RW2Z | -10 / - | 2 | ✓ Closing observed |
| 10-06 17:14 | 80m | -2 / +4 | R3KLE | -14 / +9 | 5 | ✓ Full exchange observed |
| 10-06 17:14 | 80m | 0 / - | YO5OAI | - / -18 | 2 | ✓ Closing fragment |
| 10-06 17:11 | 80m | 0 / -3 | R5KH | -16 / +3 | 7 | ✓ Full exchange observed |
| 10-06 17:08 | 80m | -6 / - | R2HD | - / +7 | 2 | ✓ Closing fragment |
| 10-06 17:06 | 80m | -6 / - | R2AL | +10 / +8 | 5 | ✓ Full exchange observed |
| 10-06 17:06 | 80m | -8 / - | UB4CLH | - / +6 | 2 | ✓ Closing fragment |
| 10-06 17:04 | 80m | -10 / +4 | UB3DSR | -10 / +8 | 4 | ✓ Full exchange observed |
| 10-06 14:50 | 160m | -13 / - | RA3ZGT | -17 / -8 | 3 | ✓ Closing observed |
| 10-06 14:35 | 80m | -17 / - | YE4FNN | - / -18 | 2 | ✓ Closing fragment |
| 10-06 14:30 | 80m | -14 / - | SP5DFK/QRP | - / +5 | 2 | Partial capture |
| 10-02 17:41 | 160m | -6 / - | RO7A | -21 / - | 2 | ✓ Closing observed |
| 10-02 17:40 | 160m | 0 / - | <...> | - / - | 2 | Partial capture |
| 10-02 17:34 | 160m | -4 / - | RA0FF | - / - | 2 | Partial capture |
| 10-02 17:33 | 160m | +7 / +4 | RA3LBW | +21 / +8 | 4 | ✓ Full exchange observed |
| 10-02 17:31 | 160m | +4 / -2 | IZ7NLJ | +15 / -12 | 5 | ✓ Full exchange observed |
| 10-02 17:29 | 160m | -1 / - | R2GCV | - / -13 | 2 | ✓ Closing fragment |
| 10-02 17:28 | 160m | -4 / - | RQ7R | -20 / -23 | 3 | ✓ Closing observed |
| 10-02 17:26 | 160m | -5 / - | RA1OW | - / -16 | 3 | ✓ Closing fragment |
| 10-02 17:22 | 160m | -11 / +9 | R3PA | -11 / -14 | 5 | ✓ Full exchange observed |
| 10-02 17:22 | 160m | -4 / +6 | DG0OBU | -7 / -25 | 4 | Partial capture |
| 10-02 17:21 | 160m | +2 / -11 | JF8QNF | -21 / -13 | 4 | ✓ Full exchange observed |
| 10-02 17:19 | 160m | -8 / - | R8LCA | -23 / +2 | 3 | ✓ Closing observed |
| 10-02 17:19 | 160m | -7 / +4 | RA3VX | 0 / -6 | 7 | ✓ Full exchange observed |
| 10-02 17:18 | 160m | -6 / - | RA4HEV | - / -5 | 2 | ✓ Closing fragment |
| 10-02 17:15 | 160m | -8 / +2 | OZ2LIN | -6 / -14 | 7 | ✓ Full exchange observed |
| 10-02 17:07 | 80m | - / -2 | RQ3D | -18 / - | 3 | ✓ Closing fragment |
| 10-02 16:48 | 160m | -16 / - | RA0SCA | - / -16 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 172000 -6 1238 RG6OR RY4C RR73 172315 -3 1238 A41DV RY4C 73 172330 -2 1238 RY4C UC6D KN95 (x4) 184530 +11 512 RY4C AM5CV -12 141115 -7 417 UB0SMX/P RY4C R-14 141215 -24 1649 JH3IMR RY4C LO42 (x3) 141445 -24 1650 R0SDC RY4C -12 142145 -7 2842 9V9XU RY4C LO42 (x2) 142400 -1 2842 UA0SCF RY4C RR73
UTC dB Audio Message 134730 -10 2130 UG4I RY4C -01 (x2) 134915 -6 2535 3D2HM RY4C LO42 (x4) 135730 -16 1539 UA0JBX RY4C LO42 (x3) 140130 -13 1539 UN7PNF RY4C R+01 140400 -3 833 9W6MTT RY4C LO42 140430 -10 833 R4PFY RY4C R+09 140715 -4 833 RY4C DJ0MAB JN49 140730 -9 833 BG2EFX RY4C -20 140830 -2 833 RW4HRE RY4C -17
UTC dB Audio Message 174000 +10 856 RY4C DJ9HX JN49 174015 -2 1124 DJ9HX RY4C -06 174030 -11 1357 RY4C DL9KM JN68 174030 +13 856 RY4C DJ9HX R-06 174045 +1 1124 DJ9HX RY4C RR73 174100 -2 1856 RY4C R2DRE RR73 174100 -14 1357 RY4C DL9KM JN68 174100 +3 856 RY4C DJ9HX 73 174115 -13 1124 R2DRE RY4C 73 174145 -10 1124 R1BLO/P RY4C LO42 174230 -19 1357 RY4C DL9KM JN68 (x2) 174530 +3 1224 RZ0SW RY4C -13 (x2) 174700 -7 1224 UR5VLC RY4C RR73
UTC dB Audio Message 154115 -4 2262 RY4C G8ANJ IO91 154245 +8 1627 ZS2PS RY4C LO42 (x3) 154415 +19 546 7X2KF RY4C LO42 (x2) 154545 +15 1009 ZS6KVZ RY4C LO42 (x3) 020930 -24 1777 VE4ZIM RY4C 73 021145 -6 2777 RY4C N8BAP EM89 021345 -8 879 RY4C XQ3MCC FF46 (x3) 021515 -18 1292 RY4C WA3AEP FN00
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.
Explore CW reception at SO8OOFT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee