R7KM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KN74

Receiver-side FT8 activity involving R7KM, decoded by SO8OO in southeastern Poland. 1,728 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 63 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-10.

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 1,728 FT8 messages attributed to R7KM as the transmitting token by decoded message structure across 63 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (69%), followed by 80 m (17%) and 20 m (8%). Most decodes (76%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -4.9 dB.

Overview

1,728
Messages attributed
63
UTC dates decoded
324
Active 15-min windows
-4.9 dB
Estimated median S/N

Bands

160m · 67 80m · 295 40m · 1,200 20m · 142 10m · 24
First attributed message: 2026-06-09
Last attributed message: 2026-09-10 04:09 UTC

Observed FT8 message patterns

Attributed sample
1,728 messages
Active dates
63 UTC dates
Estimated median S/N
-4.9 dB
Estimated 10th-90th percentile
-16 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 226, moderate (-15 to -9 dB) 468, strong (≥ -8 dB) 1,034.

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 R7KM 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 R7KM

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 · 42 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,164 km (approx.)
Last such locator decoded
2026-09-06 15:57 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 UTCBandR7KM S/NCounterpartCounterpart S/NMsgsCapture
09-10 04:09 40m +6 / - IU2HUQ - / -17 2 ✓ Closing fragment
09-10 04:07 40m 0 / - DJ0MAB - / -19 3 ✓ Closing fragment
09-10 04:04 40m +5 / - R3DCA -11 / -4 4 ✓ Closing observed
09-10 03:04 40m +2 / - OA4ENG - / -21 3 Partial capture
09-09 17:51 40m +8 / - RL3FA +1 / +3 7 ✓ Full exchange observed
09-09 04:13 40m +7 / -8 UB4FJC -10 / -8 9 ✓ Full exchange observed
09-08 17:14 80m +14 / - R9CS/P - / -10 4 ✓ Closing fragment
09-08 16:43 40m +11 / - UB3FBD - / -14 3 Partial capture
09-08 16:35 40m +8 / +4 R1BQW -11 / -9 5 ✓ Full exchange observed
09-08 15:16 40m 0 / +8 RA6LTD -6 / +2 8 ✓ Full exchange observed
09-08 15:12 40m 0 / - R6OV - / -3 9 ✓ Closing fragment
09-08 04:12 40m +1 / - CE8EIO - / -13 5 ✓ Closing fragment
09-08 04:10 40m -7 / - RT8T - / -19 5 Partial capture
09-08 04:08 40m -6 / - Z68BR - / -5 3 ✓ Closing fragment
09-07 18:49 40m +2 / - R8UJ - / -18 5 Partial capture
09-07 18:45 40m +6 / - R6DFI 0 / +1 6 ✓ Closing observed
09-07 18:43 40m 0 / - RZ3BM - / -3 3 ✓ Closing fragment
09-07 18:40 40m +2 / - R6OBN - / -4 4 Partial capture
09-07 18:33 40m +5 / - R6OBN - / - 9 Partial capture
09-07 18:25 40m +3 / - R6OBN - / -10 8 Partial capture
09-07 18:23 40m +8 / -1 R2GFN 0 / - 2 ✓ Closing observed
09-07 18:12 40m +2 / -7 R4HNT 0 / -6 5 ✓ Full exchange observed
09-06 19:11 160m +7 / - R9CS/P -4 / - 3 ✓ Closing observed
09-06 19:04 160m -14 / -10 R9CS/P -10 / -17 7 ✓ Full exchange observed
09-06 18:35 160m -3 / - R9CS/P - / -13 8 Partial capture
09-06 18:23 160m -3 / -14 R9CS/P -12 / -13 13 Partial capture
09-06 16:40 40m - / - R73SLET -1 / - 2 Partial capture
09-06 15:57 80m +1 / - RD9U - / -13 4 ✓ Closing fragment
09-06 12:42 40m -7 / +3 R7OF -13 / +4 3 Partial capture
09-06 12:39 40m -4 / - RK3YWA - / - 2 ✓ Closing fragment
09-06 05:16 40m +2 / - Z68BR -19 / -13 3 Partial capture
09-06 05:14 40m 0 / - Z62NS - / -6 4 Partial capture
09-05 17:41 40m +6 / - R2BEH - / - 2 ✓ Closing fragment
09-05 17:20 40m +7 / - RA3QVJ - / -15 3 Partial capture
09-05 17:13 40m +1 / +1 RA6ZD -10 / -14 6 ✓ Full exchange observed
09-05 17:11 40m -1 / -2 UA3ZQN +9 / - 5 ✓ Closing observed
09-05 17:09 40m +6 / - R4PHH - / -14 4 ✓ Closing fragment
09-05 17:07 160m -2 / - R9CS/P -12 / -17 4 ✓ Closing observed
09-05 17:06 40m +5 / - UN2NC -11 / -6 3 ✓ Closing observed
09-05 17:04 40m +9 / - R3NE - / -15 3 ✓ Closing fragment
09-04 19:23 40m -1 / - R4RZ - / - 2 ✓ Closing fragment
09-04 19:10 40m -2 / - R6OV - / -17 4 Partial capture
09-04 15:09 40m -7 / - UA9UFJ - / -14 8 ✓ Closing fragment
09-03 17:23 40m +10 / - R4AEW - / -7 2 Partial capture
09-03 17:22 40m - / 0 R3WDW +12 / - 2 Partial capture
09-03 17:19 40m +3 / +8 RM6OG -4 / +2 3 Partial capture
09-03 17:18 40m +2 / - RM6LW - / -1 4 ✓ Closing fragment
09-03 17:12 40m +6 / - R4AEW - / 0 11 Partial capture
08-31 05:34 20m -15 / +6 RA3VGS +11 / -1 3 Partial capture
08-31 03:29 20m - / -9 UB8CPH -4 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m 
UTC    dB Audio  Message
030415  +1 2574  OA4ENG R7KM -21 (x3)
033000  -5 2567  J38LD R7KM -17
033030  -6 2566  HK3YL R7KM -18
040415  +5 2566  R3DCA R7KM -04 (x2)
040500 -11 1688  R7KM R3DCA 73
040515  +3 2566  R3DCA R7KM 73
040630  +0 2566  SV8NAJ R7KM -05
040715  +1 2566  DJ0MAB R7KM -19 (x3)
040915  +6 2566  IU2HUQ R7KM R-17 (x2)
80m 
UTC    dB Audio  Message
181345 +19 1029  RI0FA R7KM RR73 (x2)
183915  +6 2812  R1BQW/M R7KM -04 (x4)
184130 -11 2186  R7KM <R6DOB/7> R-13
155730  +1 1849  RD9U R7KM KN74 (x4)
171445 +17 2728  R9CS/P R7KM -10 (x4)
160m 
UTC    dB Audio  Message
183700  +0 2732  R9CS/P R7KM -13 (x9)
190645  -7 2544  R7KM R9CS/P R-10
190700 -21 1886  R9CS/P R7KM RR73
190715 -13 2544  R7KM R9CS/P R-10
191100  +3 2658  R9CS/P R7KM RR73 (x2)
191145  -4 2544  R7KM R9CS/P 73
20m 
UTC    dB Audio  Message
060145  -6 2626  RC8SAB R7KM -15
060200 -16 1387  R7KM UB4HPQ R-24
122000 -19 2628  UB3UAC R7KM -01 (x2)
131215 -14 2629  R6LNH/P R7KM -04
131715 -11 2628  UB3UAC R7KM +00
015615  -4 1970  R7KM 5Z4VJ R-04 (x4)
032915  -3 3085  R7KM UB8CPH R-09 (x2)
053415 -15 2628  RA3VGS R7KM -01
053430  +8 2722  R7KM RA3VGS R+06 (x2)
10m 
UTC    dB Audio  Message
152600 -15 2276  RK6OV R7KM RR73
160730 -18 2279  R3GO R7KM +00
160745 -10 1364  R7KM R3GO R-02 (x2)
063945 -11  632  R7KM RA3RQF R-05
070700 -16 2275  R7KM R6YG LN04 (x2)
071100 -23 1619  R7KM 4L1AX -01 (x4)
051730 -20 2272  VK8DR R7KM -12
053215 -21 1680  R7KM UA3GT 73
101915  -9 1052  R7KM IW8XLD R-04 (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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