JY4CI — 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 JY4CI, decoded by SO8OO in southeastern Poland. 370 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-07 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 370 FT8 messages attributed to JY4CI as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (40%), followed by 40 m (24%) and 80 m (19%). Most decodes (74%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.
Overview
Bands
Last attributed message: 2026-10-20 22:18 UTC
Observed FT8 message patterns
- Attributed sample
- 370 messages
- Active dates
- 21 UTC dates
- Estimated median S/N
- -17 dB
- Estimated 10th-90th percentile
- -21 to -8 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 214, moderate (-15 to -9 dB) 114, strong (≥ -8 dB) 42.
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 JY4CI 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 JY4CI
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
- KM71 · 86 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,325 km (approx.)
- Last such locator decoded
- 2026-10-20 22:03 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 | JY4CI S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-20 22:23 | 60m | - / - | OE3LQA | +14 / - | 3 | Partial capture |
| 10-20 22:19 | 60m | - / -7 | IK8TLZ | +1 / - | 3 | ✓ Closing fragment |
| 10-20 22:18 | 60m | -20 / - | SP4WRF | +4 / -16 | 2 | Partial capture |
| 10-20 22:17 | 60m | - / - | HB9CEV | -6 / - | 3 | Partial capture |
| 10-20 22:17 | 60m | - / -2 | I8IGS | -7 / - | 2 | Partial capture |
| 10-20 22:13 | 60m | - / - | DK8NX | -6 / - | 12 | Partial capture |
| 10-20 22:13 | 60m | - / - | SP4WRF | +4 / - | 5 | Partial capture |
| 10-20 22:12 | 60m | -18 / - | LA9JKA | -16 / -7 | 20 | Partial capture |
| 10-20 22:09 | 60m | - / - | SP4WRF | +4 / - | 2 | Partial capture |
| 10-20 22:09 | 60m | - / -16 | PA3GDL | +3 / - | 4 | ✓ Closing fragment |
| 10-20 22:08 | 60m | - / -17 | DL5YEE | -6 / - | 7 | ✓ Closing fragment |
| 10-20 22:08 | 60m | -16 / -7 | EA2A | +2 / +2 | 15 | ✓ Full exchange observed |
| 10-20 22:07 | 60m | - / -9 | LA7HJA | -6 / - | 21 | ✓ Closing fragment |
| 10-20 22:07 | 60m | -18 / -12 | E74MG | -8 / -17 | 5 | ✓ Full exchange observed |
| 10-20 22:06 | 60m | -18 / - | LA7OY | - / -11 | 2 | ✓ Closing fragment |
| 10-20 22:06 | 60m | -20 / +6 | YO5USA | 0 / -11 | 25 | ✓ Full exchange observed |
| 10-20 22:05 | 60m | -14 / - | 9H1AE | +2 / -3 | 3 | Partial capture |
| 10-20 22:05 | 60m | -24 / -10 | F9IE | -3 / - | 10 | ✓ Closing observed |
| 10-20 22:05 | 60m | -23 / -16 | PH7R | -3 / - | 4 | ✓ Closing observed |
| 10-20 22:03 | 60m | - / - | S57MPU | -2 / - | 6 | Partial capture |
| 10-20 22:02 | 60m | - / - | OH1LA | -11 / - | 2 | Partial capture |
| 10-20 22:02 | 60m | - / - | OK1TRJ | -12 / - | 11 | Partial capture |
| 10-20 22:02 | 60m | - / -8 | DF1JM | +3 / - | 4 | ✓ Closing fragment |
| 10-20 22:02 | 60m | - / - | DM5UE | -5 / - | 6 | Partial capture |
| 10-20 22:00 | 60m | - / - | EA7LBB | -12 / - | 7 | Partial capture |
| 10-20 22:00 | 60m | - / -11 | PC7B | +6 / - | 4 | ✓ Closing fragment |
| 10-20 22:00 | 60m | - / -18 | G0GFC | -3 / - | 3 | ✓ Closing fragment |
| 10-20 21:59 | 60m | -21 / -14 | EB7BXN | -9 / -10 | 35 | ✓ Full exchange observed |
| 10-20 21:59 | 60m | - / -3 | OH3JF | -8 / - | 3 | ✓ Closing fragment |
| 10-20 21:55 | 60m | - / -20 | MM0HVU | -14 / - | 2 | Partial capture |
| 10-20 21:55 | 60m | - / -13 | G7KHF | -2 / - | 7 | ✓ Closing fragment |
| 10-20 21:54 | 60m | - / - | DR800WE | -2 / - | 2 | ✓ Closing fragment |
| 10-20 21:54 | 60m | - / - | HB9CEV | 0 / - | 8 | Partial capture |
| 10-20 21:53 | 60m | - / - | CT1DIZ | -14 / - | 3 | Partial capture |
| 10-20 21:53 | 60m | - / -10 | DF1IH | +6 / - | 12 | ✓ Closing fragment |
| 10-20 21:53 | 60m | - / - | G0GFC | +1 / - | 3 | Partial capture |
| 10-20 21:52 | 60m | - / - | OR0A | -1 / - | 40 | Partial capture |
| 10-20 21:51 | 60m | - / -9 | 9A60CBM | -13 / - | 7 | ✓ Closing fragment |
| 10-20 21:51 | 60m | - / -6 | IU4UWH | -9 / - | 5 | ✓ Closing fragment |
| 10-20 21:49 | 60m | - / -11 | HB9PLH | -4 / - | 5 | ✓ Closing fragment |
| 10-20 21:48 | 60m | -21 / -10 | SP5EXA | -9 / +2 | 46 | ✓ Full exchange observed |
| 10-20 21:48 | 60m | - / - | CT1DIZ | -12 / - | 2 | Partial capture |
| 10-20 21:48 | 60m | - / -1 | I8IGS | -4 / - | 11 | Partial capture |
| 10-20 21:47 | 60m | - / -10 | IT9IVN | -8 / - | 5 | ✓ Closing fragment |
| 10-20 21:45 | 60m | - / -3 | IK0PHY | +1 / - | 5 | ✓ Closing fragment |
| 10-20 21:42 | 60m | - / - | G0GFC | +1 / - | 6 | Partial capture |
| 10-20 21:42 | 60m | - / -18 | G0ORC | -5 / - | 3 | ✓ Closing fragment |
| 10-20 21:42 | 60m | - / -14 | ON6JN | -2 / - | 4 | Partial capture |
| 10-20 21:42 | 60m | - / -10 | OH4TQ | -5 / - | 6 | ✓ Closing fragment |
| 10-20 21:41 | 60m | - / - | HB9CEV | +2 / - | 7 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 222030 -17 1657 JY4CI LA9JKA JP32 222030 +3 1933 JY4CI IK8TLZ 73 222030 -10 1791 JY4CI DK8NX JN59 222100 -15 1657 JY4CI LA9JKA JP32 (x2) 222130 -6 2844 JY4CI EA7LGM IM67 222130 -9 808 JY4CI DK8NX JN59 222200 -18 1658 JY4CI LA9JKA JP32 222200 -5 808 JY4CI DK8NX JN59 222230 -18 1657 JY4CI LA9JKA JP32 222300 +18 662 JY4CI OE3LQA JN78 (x3) 222430 -5 2844 JY4CI EA7LGM IM67 223300 -9 1489 JY4CI SP4WRF JO93
UTC dB Audio Message 032930 -15 1427 SP73VOT JY4CI R-08 033015 -18 1695 JY4CI DF8TS R-01 (x2) 033045 -18 1648 JY4CI CT2HEX IM58 033100 -16 1427 CT2HEX JY4CI -05 033115 -17 1648 JY4CI CT2HEX IM58 033130 -16 1427 CT2HEX JY4CI -09 033145 -21 1648 JY4CI CT2HEX R-12 033200 -13 1427 CT2HEX JY4CI RR73 033215 -5 1427 JY4CI UA4FKT LO23 033230 -13 1427 UA4FKT JY4CI -08 (x2) 033330 -13 1427 CQ JY4CI KM71 033400 -10 1427 US3EW JY4CI -12 (x2)
UTC dB Audio Message 191015 -1 2812 JY4CI DD3KF JO30 191045 -16 1756 JY4CI YO8CRU KN36 191045 -1 2747 JY4CI SA7DXR -14 191100 -21 1616 IK6GTF JY4CI RR73 191115 +3 2748 JY4CI SA7DXR -14 191115 -16 1738 JY4CI IK6GTF 73 191130 -15 1616 EA5GS JY4CI -18 191145 -4 2748 JY4CI SA7DXR -14 191145 -5 2812 JY4CI DD3KF JO30 191200 -15 1616 EA5GS JY4CI RR73 191215 -7 2748 JY4CI SA7DXR -14 191215 -4 2812 JY4CI DD3KF JO30 191245 -16 210 JY4CI YL2CB KO26 191315 +1 2747 JY4CI SA7DXR -14 191715 -7 2008 JY4CI YL2CB KO26
UTC dB Audio Message 175715 -9 1897 JY4CI G4PZW JO02 (x2) 153245 -17 1402 CR5VP JY4CI R-16 (x2) 153345 -4 1402 EV6Z JY4CI R-05 153545 -15 1401 YO9PH JY4CI R-15 (x2) 153745 -14 1401 TA1KYN JY4CI KM71 (x3) 044415 -15 1582 RI1FJL JY4CI KM71 (x2) 044630 -15 467 JY4CI RI1FJL -08 (x2) 044715 -8 1581 RI1FJL JY4CI 73
UTC dB Audio Message 173115 -18 1390 JY4CI EA3AWT -13 173145 -4 865 JY4CI IK1LJO JN45 (x3) 173315 -23 1390 JY4CI EA3AWT -21 (x3) 173845 -18 1292 JY4CI HB3YQY +01 (x2) 174045 -10 1327 JY4CI IK1HJS +04 174045 -5 894 JY4CI GX0ERG 73 174115 -12 1327 JY4CI IK1HJS +04 (x2) 174615 -21 1323 JY4CI M6GPH IO83 (x2)
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