RY7KU — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving RY7KU, decoded by SO8OO in southeastern Poland. 116 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-11.
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 116 FT8 messages attributed to RY7KU as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (41%), followed by 80 m (31%) and 160 m (22%). Most decodes (53%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (69%); the estimated median was -5 dB.
Overview
Bands
Last attributed message: 2026-09-11 16:28 UTC
Observed FT8 message patterns
- Attributed sample
- 116 messages
- Active dates
- 6 UTC dates
- Estimated median S/N
- -5 dB
- Estimated 10th-90th percentile
- -16 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 80.
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 RY7KU 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 RY7KU
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
- KN74 · 37 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,164 km (approx.)
- Last such locator decoded
- 2026-09-11 16:28 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 | RY7KU S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-11 16:25 | 80m | +1 / -14 | UB4CLH | -18 / -19 | 6 | ✓ Full exchange observed |
| 09-11 16:24 | 80m | -1 / -2 | RX6DA | +6 / - | 5 | ✓ Full exchange observed |
| 07-17 16:43 | 40m | -13 / - | R4CHN | - / 0 | 3 | ✓ Closing fragment |
| 07-11 13:20 | 20m | - / -18 | ON3NR | -6 / - | 3 | Partial capture |
| 07-11 12:00 | 20m | - / -4 | EA5ET | -2 / - | 3 | ✓ Closing fragment |
| 07-06 06:04 | 20m | - / - | LZ2SPD | -12 / - | 2 | Partial capture |
| 07-05 21:56 | 20m | - / -13 | YO4NF | -14 / - | 2 | Partial capture |
| 07-05 21:35 | 20m | -22 / -6 | EC3A | -9 / +4 | 4 | ✓ Full exchange observed |
| 07-05 20:52 | 20m | - / - | F5RRS | -8 / - | 3 | Partial capture |
| 07-05 20:01 | 160m | - / -18 | RK6OV | -9 / - | 6 | ✓ Closing fragment |
| 07-05 20:01 | 160m | - / -8 | UA3ZUX | -2 / - | 4 | Partial capture |
| 07-05 20:01 | 160m | -16 / -2 | UI6A | +10 / -5 | 4 | ✓ Full exchange observed |
| 07-05 19:59 | 160m | -20 / - | SV7BVM | -13 / - | 2 | ✓ Closing observed |
| 07-05 11:52 | 20m | -22 / - | R1FW | - / -6 | 2 | ✓ Closing fragment |
| 07-05 00:40 | 80m | -7 / -7 | 9A5E | +9 / +5 | 5 | ✓ Full exchange observed |
| 07-05 00:39 | 80m | -2 / -17 | EC5M | 0 / -6 | 3 | ✓ Full exchange observed |
| 07-05 00:35 | 80m | -4 / -2 | SK3WWA | -6 / -11 | 5 | ✓ Full exchange observed |
| 07-05 00:33 | 80m | +1 / -9 | OH5WWA | +2 / +1 | 5 | ✓ Full exchange observed |
| 07-05 00:32 | 80m | +7 / -5 | II0WWA | +12 / -4 | 5 | ✓ Full exchange observed |
| 07-05 00:30 | 80m | -4 / +6 | LZ01MIKU | +12 / - | 3 | Partial capture |
| 07-05 00:29 | 80m | 0 / -15 | SN0WWA | -9 / -16 | 4 | ✓ Full exchange observed |
| 07-05 00:25 | 80m | - / -8 | 9A3AUH | +9 / - | 5 | ✓ Closing fragment |
| 07-05 00:25 | 80m | -5 / - | UI5A | -2 / - | 2 | ✓ Closing observed |
| 07-05 00:25 | 80m | - / +2 | SV1HFE | +3 / - | 6 | ✓ Closing fragment |
| 07-05 00:23 | 80m | -7 / -20 | RM5F | +12 / -4 | 5 | ✓ Full exchange observed |
| 07-05 00:22 | 80m | -9 / -11 | GB2WWA | -3 / -9 | 5 | ✓ Full exchange observed |
| 07-05 00:20 | 80m | +9 / -9 | DL3MIB | +4 / - | 3 | ✓ Closing observed |
| 07-05 00:20 | 80m | +6 / -10 | DO9BAU | -4 / -6 | 6 | ✓ Full exchange observed |
| 07-05 00:18 | 80m | -4 / -10 | SN4WWA | 0 / -6 | 4 | ✓ Full exchange observed |
| 07-05 00:11 | 160m | -12 / -11 | R6SO | -18 / -19 | 6 | ✓ Full exchange observed |
| 07-05 00:08 | 160m | -14 / -15 | DK2JP | -5 / -13 | 5 | ✓ Full exchange observed |
| 07-05 00:02 | 160m | -14 / -1 | RA3WY | +3 / +3 | 5 | ✓ Full exchange observed |
| 07-04 23:38 | 160m | -4 / -16 | 9A4ZM | +15 / - | 4 | ✓ Closing observed |
| 07-04 23:37 | 160m | +1 / -2 | UA4FKT | +14 / - | 3 | ✓ Closing observed |
| 07-03 07:08 | 10m | - / +6 | SX0W | -10 / - | 2 | ✓ Closing fragment |
| 06-25 00:51 | 20m | -14 / -12 | KB3Z | -13 / -2 | 4 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 004100 -8 2134 9A5E RY7KU R+05 004115 +7 2134 RY7KU 9A5E RR73 004130 -7 2134 9A5E RY7KU 73 162430 +0 1647 RX6DA RY7KU KN74 162445 +4 1647 RY7KU RX6DA -02 162500 -2 1648 RX6DA RY7KU R+11 162515 +7 1647 RY7KU RX6DA RR73 162530 +0 1649 RX6DA RY7KU 73 162545 -19 2031 RY7KU UB4CLH -14 162600 +2 2032 UB4CLH RY7KU R-19 162615 -17 2031 RY7KU UB4CLH RR73 162630 -3 2031 UB4CLH RY7KU R-19 162645 -17 2031 RY7KU UB4CLH RR73 162700 +3 2031 UB4CLH RY7KU 73 162800 -3 1596 RA9YTI RY7KU KN74
UTC dB Audio Message 221430 -15 985 RY7KU GB2WWA -11 164245 -8 2684 RN3DDW/P RY7KU KN74 164315 -17 2394 R4CHN RY7KU KN74 (x3)
UTC dB Audio Message 215645 -17 2141 RY7KU YO4NF -13 (x2) 060400 -12 620 RY7KU LZ2SPD KN22 (x2) 100930 -16 2006 RY7KU <...> +24 101545 -7 679 RY7KU LZ1ZF RR73 102430 -7 808 RY7KU S59A -08 120030 +0 2381 RY7KU EA5ET IM99 (x3) 120700 -24 1895 RY7KU ON7KEC +03 121600 -13 2381 RY7KU F1PSX 73 132030 -7 2492 RY7KU ON3NR -18 (x3)
UTC dB Audio Message 200030 -13 1339 RY7KU SV7BVM RR73 200100 +9 2270 RY7KU UI6A -02 200100 -1 1918 RY7KU UA3ZUX KO90 200100 -8 983 RY7KU RK6OV KN97 200115 -16 2271 UI6A RY7KU R-05 200130 +10 2270 RY7KU UI6A RR73 200130 -7 983 RY7KU RK6OV KN97 200145 -17 2270 UI6A RY7KU 73 200200 -9 1918 RY7KU UA3ZUX KO90 200200 -12 984 RY7KU RK6OV KN97 (x3) 200330 +0 1918 RY7KU UA3ZUX KO90 200330 -12 983 RY7KU RK6OV RR73 200400 +0 1918 RY7KU UA3ZUX R-08
UTC dB Audio Message 070830 -10 748 RY7KU SX0W +06 (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.
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