RK5M — 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 RK5M, decoded by SO8OO in southeastern Poland. 808 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-21.
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 808 FT8 messages attributed to RK5M as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (42%), followed by 40 m (42%) and 160 m (10%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was +4.2 dB.
Overview
Bands
Last attributed message: 2026-10-21 23:26 UTC
Observed FT8 message patterns
- Attributed sample
- 808 messages
- Active dates
- 26 UTC dates
- Estimated median S/N
- +4.2 dB
- Estimated 10th-90th percentile
- -14 to +13 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 58, moderate (-15 to -9 dB) 88, strong (≥ -8 dB) 662.
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 RK5M 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 RK5M
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
- KO97 · 464 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,404 km (approx.)
- Last such locator decoded
- 2026-10-21 23:26 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 | RK5M S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-21 23:25 | 40m | - / - | UA9SY | -12 / - | 6 | Partial capture |
| 10-21 23:22 | 40m | - / -16 | NF4A | -8 / - | 5 | ✓ Closing fragment |
| 10-21 23:12 | 40m | - / -10 | EA4LN | -18 / - | 9 | Partial capture |
| 10-21 00:35 | 80m | - / - | G3TKT | -16 / - | 4 | Partial capture |
| 10-21 00:31 | 80m | +7 / +2 | DO1OAS | -2 / -18 | 8 | ✓ Full exchange observed |
| 10-21 00:29 | 80m | +8 / - | UN2G | -8 / 0 | 4 | ✓ Full exchange observed |
| 10-21 00:26 | 80m | +8 / -2 | DL9KM | -4 / -18 | 9 | ✓ Full exchange observed |
| 10-21 00:22 | 80m | +11 / -2 | RJ3DC | 0 / +1 | 6 | ✓ Full exchange observed |
| 10-21 00:21 | 80m | - / - | OH6IH | +8 / - | 2 | Partial capture |
| 10-21 00:19 | 80m | +8 / -1 | R5AV | +9 / - | 4 | ✓ Full exchange observed |
| 10-18 21:35 | 80m | - / -22 | EC3A | -18 / - | 2 | Partial capture |
| 10-18 21:30 | 80m | +2 / - | R4FDD | -11 / +6 | 5 | ✓ Full exchange observed |
| 10-18 21:28 | 80m | +10 / - | R2BPS | - / -13 | 2 | ✓ Closing fragment |
| 10-18 21:24 | 80m | +2 / - | R80SAA | - / -5 | 2 | ✓ Closing fragment |
| 10-18 21:23 | 80m | - / -13 | EC3A | -16 / - | 3 | Partial capture |
| 10-18 21:21 | 80m | +6 / - | R2BQM | - / -18 | 3 | ✓ Closing fragment |
| 10-18 21:20 | 80m | - / - | EA3HMM | -2 / - | 3 | Partial capture |
| 10-18 21:20 | 80m | +8 / +3 | R4FDK | -1 / - | 4 | ✓ Full exchange observed |
| 10-18 21:15 | 80m | - / - | DG5PW | -3 / - | 4 | Partial capture |
| 10-18 21:09 | 160m | -24 / +3 | RV3ZK | -5 / - | 4 | ✓ Closing observed |
| 10-18 21:05 | 160m | -17 / +5 | R80SAA | +10 / - | 4 | ✓ Closing observed |
| 10-17 23:31 | 40m | -12 / - | EA4IFO | -16 / - | 2 | ✓ Closing observed |
| 10-17 23:29 | 40m | -13 / - | BD8NBG | - / -9 | 2 | ✓ Closing fragment |
| 10-17 23:25 | 40m | -13 / - | EA3AAY | -16 / +7 | 4 | ✓ Closing observed |
| 10-17 23:23 | 40m | -13 / -12 | RD3FY | -9 / - | 3 | ✓ Closing observed |
| 10-17 23:15 | 40m | - / - | M7ECL | -6 / - | 3 | Partial capture |
| 10-17 23:09 | 160m | - / - | IU3RRX | -4 / - | 3 | Partial capture |
| 10-17 23:04 | 160m | 0 / -9 | RK3AW | 0 / -17 | 3 | ✓ Full exchange observed |
| 10-16 23:41 | 80m | - / +10 | DL/N0PNG | +1 / - | 3 | Partial capture |
| 10-16 23:36 | 80m | +17 / - | DL/N0PNG | +2 / -13 | 5 | Partial capture |
| 10-16 23:35 | 80m | +18 / +3 | DA6OOM | 0 / -13 | 5 | ✓ Full exchange observed |
| 10-16 23:31 | 80m | - / +2 | DL/N0PNG | +2 / - | 3 | Partial capture |
| 10-16 23:28 | 80m | +16 / -3 | EI4JFB | -8 / -10 | 4 | ✓ Full exchange observed |
| 10-15 22:38 | 40m | +8 / - | OM2WW | - / +1 | 2 | ✓ Closing fragment |
| 10-15 22:37 | 40m | 0 / +1 | M7TUP | -12 / - | 4 | ✓ Closing observed |
| 10-15 22:35 | 40m | +4 / - | MM6EJO | - / -17 | 2 | ✓ Closing fragment |
| 10-15 22:33 | 40m | -2 / - | R4FDK | - / -20 | 3 | Partial capture |
| 10-15 22:30 | 40m | -1 / +3 | 2E0MRK | -15 / -4 | 6 | ✓ Full exchange observed |
| 10-15 22:30 | 40m | -4 / - | DL1RBV | - / -22 | 2 | ✓ Closing fragment |
| 10-15 22:26 | 40m | +1 / - | BD8FWI | - / -17 | 2 | Partial capture |
| 10-15 22:25 | 40m | -4 / +1 | RZ6AKF | -7 / +9 | 4 | ✓ Full exchange observed |
| 10-15 22:25 | 40m | -18 / -4 | F4BQS | -4 / -10 | 9 | ✓ Full exchange observed |
| 10-15 22:22 | 40m | -2 / -2 | IU4TQQ | -16 / -10 | 5 | ✓ Full exchange observed |
| 10-15 22:21 | 40m | +4 / - | SP7ENZ | - / - | 3 | ✓ Closing fragment |
| 10-15 22:19 | 40m | +3 / -1 | TA3NK | -4 / - | 4 | ✓ Closing observed |
| 10-13 22:53 | 80m | - / - | ON4MAP | -9 / - | 5 | Partial capture |
| 10-13 22:49 | 80m | - / -8 | EC3A | -7 / - | 2 | Partial capture |
| 10-13 22:49 | 80m | +13 / +6 | RA4HAP | -20 / -5 | 5 | ✓ Full exchange observed |
| 10-13 22:49 | 80m | - / -5 | G0BAZ | -16 / - | 2 | Partial capture |
| 10-13 22:48 | 80m | +14 / 0 | DF4FS | -1 / -18 | 7 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 232100 -12 2605 CQ RK5M KO97 a1 232215 -8 2655 RK5M NF4A EM70 (x2) 232245 -9 2732 RK5M AA3B RR73 232315 -8 2656 RK5M NF4A EM70 (x3) 232500 -13 2605 CQ RK5M KO97 a1 232515 -19 1489 RK5M UA9SY LO63 (x2) 232600 -12 2605 CQ RK5M KO97 a1 232615 -19 1490 RK5M UA9SY LO63 (x4)
UTC dB Audio Message 003215 +8 2272 DO1OAS RK5M -18 003230 -2 2272 RK5M DO1OAS R+02 003245 +6 2272 DO1OAS RK5M -18 003300 +1 2272 RK5M DO1OAS R+02 003315 +6 2273 DO1OAS RK5M RR73 003330 +1 2272 RK5M DO1OAS 73 003345 +14 2272 CQ RK5M KO97 (x3) 003500 -14 2272 RK5M G3TKT IO92 003515 +8 2272 CQ RK5M KO97 003530 -18 2272 RK5M G3TKT IO92 003545 +6 2272 CQ RK5M KO97 003600 -16 2271 RK5M G3TKT IO92 (x2)
UTC dB Audio Message 210530 -24 902 R80SAA RK5M KO97 210545 +12 602 RK5M R80SAA +05 (x2) 210630 -10 902 R80SAA RK5M 73 210915 -3 885 RK5M RV3ZK KO90 (x2) 211000 -24 886 RV3ZK RK5M RR73 211015 -8 884 RK5M RV3ZK 73 211030 -19 884 CQ RK5M KO97 (x7)
UTC dB Audio Message 210800 +14 2509 CQ RK5M KO97 210830 +8 2509 DF2SL RK5M +02 (x2) 210930 +8 2509 CQ RK5M KO97 211030 +2 2509 KR3BST RK5M -17 (x3) 211200 +6 2509 CQ RK5M KO97 211230 -1 2509 KR3BST RK5M RR73 211300 +12 2509 CQ RK5M KO97 (x2) 211400 +8 2509 KF8WX RK5M -13 (x2) 211630 +13 2509 CQ RK5M KO97 (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.
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