R3KHR — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving R3KHR, decoded by SO8OO in southeastern Poland. 272 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-25 and 2026-09-19.
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 272 FT8 messages attributed to R3KHR as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 80 m (20%) and 10 m (4%). Several six-hour UTC windows tied for the largest share (99%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.
Overview
Bands
Last attributed message: 2026-09-19 18:41 UTC
Observed FT8 message patterns
- Attributed sample
- 272 messages
- Active dates
- 11 UTC dates
- Estimated median S/N
- -12 dB
- Estimated 10th-90th percentile
- -19 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 81, moderate (-15 to -9 dB) 71, strong (≥ -8 dB) 120.
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 R3KHR 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 R3KHR
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
- LO01 · 37 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,359 km (approx.)
- Last such locator decoded
- 2026-09-19 18:39 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 | R3KHR S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-19 18:39 | 40m | +2 / - | JF2JRD | -9 / - | 4 | ✓ Closing observed |
| 09-19 18:31 | 40m | -2 / - | JH1CTV | - / -9 | 3 | Partial capture |
| 09-19 17:59 | 40m | - / - | RU3T | -10 / - | 2 | Partial capture |
| 09-19 17:58 | 40m | -2 / -4 | RL2F | -13 / -7 | 9 | Partial capture |
| 09-15 17:04 | 40m | - / - | UB2FEK | +1 / - | 4 | Partial capture |
| 09-15 17:03 | 40m | +5 / - | UB8CRM | - / - | 3 | Partial capture |
| 09-15 16:47 | 40m | -2 / - | RA6OD | - / - | 2 | Partial capture |
| 09-15 16:46 | 40m | +2 / - | UB2FEK | -9 / - | 3 | Partial capture |
| 09-15 16:42 | 40m | -9 / -1 | EU1EU | -18 / -9 | 3 | ✓ Full exchange observed |
| 09-15 16:40 | 40m | -10 / - | JI1RZI | - / - | 3 | Partial capture |
| 09-15 16:35 | 40m | - / -21 | R2EC | +8 / - | 3 | ✓ Closing fragment |
| 09-15 16:32 | 40m | -4 / - | RW4HBD | - / - | 2 | ✓ Closing fragment |
| 09-15 16:31 | 40m | -8 / 0 | YO4FJK | -3 / +7 | 4 | ✓ Full exchange observed |
| 09-13 18:55 | 40m | - / -18 | SV1ENG | -4 / - | 6 | Partial capture |
| 09-13 18:52 | 40m | -8 / - | RA0AB | - / -19 | 3 | ✓ Closing fragment |
| 09-13 18:51 | 40m | -6 / -12 | RN3YN | -1 / -8 | 6 | ✓ Full exchange observed |
| 09-13 18:50 | 80m | 0 / - | R7AW | - / -9 | 2 | ✓ Closing fragment |
| 09-13 18:47 | 80m | -8 / -10 | E77EA | +3 / -15 | 5 | ✓ Full exchange observed |
| 09-13 18:47 | 80m | -6 / -6 | RA6ATZ | -2 / +5 | 4 | ✓ Full exchange observed |
| 09-13 18:46 | 80m | -10 / +4 | RM5P | -13 / +4 | 5 | ✓ Full exchange observed |
| 09-13 18:42 | 80m | -6 / +10 | UA4FKT | +5 / +1 | 5 | ✓ Full exchange observed |
| 09-13 18:42 | 80m | - / +2 | RA3GZ | -2 / - | 2 | ✓ Closing fragment |
| 09-13 18:36 | 80m | 0 / - | RA0ADQ | - / -5 | 2 | ✓ Closing fragment |
| 09-13 18:34 | 80m | -10 / +2 | RA3PDL | -9 / -7 | 5 | ✓ Full exchange observed |
| 09-13 18:32 | 80m | -7 / -14 | DO9BAU | +3 / -14 | 16 | ✓ Full exchange observed |
| 09-13 18:32 | 80m | - / +10 | RC2DT | -11 / - | 3 | Partial capture |
| 09-13 18:22 | 40m | +2 / - | E77EA | - / -12 | 2 | ✓ Closing fragment |
| 09-13 18:20 | 40m | +1 / - | RL2F | - / -17 | 2 | ✓ Closing fragment |
| 09-13 18:20 | 40m | +2 / -4 | RA6OD | -6 / +1 | 2 | Partial capture |
| 09-13 18:19 | 40m | +4 / - | R9OOF | - / -10 | 2 | ✓ Closing fragment |
| 09-13 18:18 | 40m | +2 / - | R4HLO | - / -8 | 2 | ✓ Closing fragment |
| 09-13 18:17 | 40m | +1 / - | ON1DGN | - / -11 | 2 | ✓ Closing fragment |
| 09-13 18:15 | 40m | +4 / - | RL2F | - / -21 | 2 | Partial capture |
| 09-13 18:14 | 40m | +2 / - | R6DJR | - / -5 | 2 | ✓ Closing fragment |
| 09-13 18:13 | 40m | -1 / - | EU6UE | -12 / - | 2 | ✓ Closing observed |
| 08-20 17:54 | 40m | -8 / -14 | RG6OR | -6 / -2 | 3 | ✓ Full exchange observed |
| 08-20 17:02 | 40m | - / - | DL6EL | -2 / - | 3 | Partial capture |
| 08-20 17:01 | 40m | -5 / -1 | R4UAS | -5 / -1 | 5 | ✓ Full exchange observed |
| 08-20 17:00 | 40m | -4 / +1 | UB4HVA | -17 / -4 | 3 | ✓ Full exchange observed |
| 08-20 16:59 | 40m | -4 / - | US1EA | -12 / -7 | 4 | ✓ Full exchange observed |
| 08-20 16:57 | 40m | -4 / - | EU6UE | -10 / -3 | 5 | ✓ Full exchange observed |
| 08-20 16:57 | 40m | -2 / +6 | RV3DFC | -9 / +1 | 5 | ✓ Full exchange observed |
| 08-20 16:54 | 40m | -6 / -4 | RA6MQ | -6 / 0 | 6 | ✓ Full exchange observed |
| 08-20 16:54 | 40m | -4 / - | R4CBF | - / -22 | 2 | ✓ Closing fragment |
| 08-20 16:53 | 40m | -5 / -13 | DD7EE | -4 / -15 | 3 | Partial capture |
| 08-20 16:48 | 40m | -4 / -1 | R2SN | +3 / 0 | 5 | ✓ Full exchange observed |
| 08-20 16:47 | 40m | -4 / - | R1QF | - / -8 | 2 | ✓ Closing fragment |
| 08-20 16:47 | 40m | -4 / +8 | RW4Z | -11 / -4 | 5 | ✓ Full exchange observed |
| 08-20 16:46 | 40m | -3 / - | UB4FGK | - / +1 | 2 | ✓ Closing fragment |
| 08-20 16:45 | 40m | -4 / - | UA4SN | - / -1 | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 175915 -3 1795 RL2F R3KHR LO01 175930 -8 868 R3KHR RU3T LO16 175945 +2 1795 RL2F R3KHR R-07 180000 -9 1796 R3KHR RL2F RRR 180015 +1 1795 RL2F R3KHR R-05 180030 -11 1795 R3KHR RL2F RRR (x3) 183145 -2 1477 JH1CTV R3KHR LO01 (x3) 183930 +2 1478 JF2JRD R3KHR LO01 (x2) 184045 -9 2635 R3KHR JF2JRD RR73 184100 +0 1478 JF2JRD R3KHR 73
UTC dB Audio Message 184715 -12 1646 R3KHR RM5P R+04 184730 -7 1412 RA6ATZ R3KHR +05 184745 -14 1645 R3KHR RM5P R+04 184745 -4 2081 R3KHR RA6ATZ R-06 184745 +2 1481 R3KHR E77EA JN84 184800 -5 1412 RA6ATZ R3KHR RR73 184815 -12 1645 R3KHR RM5P R+04 184815 -1 2081 R3KHR RA6ATZ 73 184830 -6 1412 RM5P R3KHR RR73 184900 -8 1412 E77EA R3KHR -15 184915 +2 1481 R3KHR E77EA R-10 184930 -9 1412 E77EA R3KHR RR73 184945 +4 1481 R3KHR E77EA 73 185000 -1 1412 R7AW R3KHR -09 (x2)
UTC dB Audio Message 093330 -13 1506 R3KHR RW3VA RR73 064700 -24 1719 R3KHR R8CIS R+03 065330 -24 1673 R3KHR PD3LKN JO22 (x3) 065530 -12 954 R3KHR EA3BIC JN11 (x3) 072015 -14 1672 R3KHR PD0PMF JO32 160500 -14 2346 R3KHR DG9XN R-15 (x6)
UTC dB Audio Message 182415 +3 909 R3KHR R2DGN KO94 182415 -11 2150 R3KHR EW6BZ 73 182445 +3 909 R3KHR R2DGN KO94 182500 -10 1496 R2DGN R3KHR +03 182515 +4 909 R3KHR R2DGN R-02 182530 -10 1496 R2DGN R3KHR RR73 182545 +4 909 R3KHR R2DGN 73 182600 -13 1496 UD8S R3KHR R-01 (x2) 182745 +4 1495 R3KHR OE3PKU JN87 (x2) 182830 -14 1496 OE3PKU R3KHR -16 182845 -4 1495 R3KHR OE3PKU R-16 182900 -11 1496 OE3PKU R3KHR RR73 182915 +3 1495 R3KHR OE3PKU 73
UTC dB Audio Message 091145 -16 459 R3KHR R1AP -17 091430 -8 2726 R3KHR UA6JQ +02 162300 -14 1537 R4HIV R3KHR +03 162630 -18 1538 UA9QFF R3KHR +03 162930 -16 1538 CQ PW R3KHR LO01 163130 -23 1537 OH6FSO R3KHR -18 163915 -17 1535 PR2CQ R3KHR -16 164045 -16 1535 CQ PW R3KHR LO01 (x3) 164200 -21 1614 R3KHR RW6HP LN14 164245 -24 1535 RW6HP R3KHR RR73 164430 -21 1534 DL7HSD R3KHR -16
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.
FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee