RK9UN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: NO33

Receiver-side FT8 activity involving RK9UN, decoded by SO8OO in southeastern Poland. 967 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 40 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-05.

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 967 FT8 messages attributed to RK9UN as the transmitting token by decoded message structure across 40 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (95%), followed by 80 m (2%) and 40 m (2%). Most decodes (53%) fell within the six-hour window 09:00-15:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

967
Messages attributed
40
UTC dates decoded
146
Active 15-min windows
-9 dB
Estimated median S/N

Bands

160m · 4 80m · 23 40m · 18 20m · 922
First attributed message: 2026-06-06
Last attributed message: 2026-10-05 14:35 UTC

Observed FT8 message patterns

Attributed sample
967 messages
Active dates
40 UTC dates
Estimated median S/N
-9 dB
Estimated 10th-90th percentile
-17 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 177, moderate (-15 to -9 dB) 345, strong (≥ -8 dB) 445.

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 RK9UN 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 RK9UN

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
NO33 · 546 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
4,351 km (approx.)
Last such locator decoded
2026-10-05 14:32 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 UTCBandRK9UN S/NCounterpartCounterpart S/NMsgsCapture
10-05 15:11 40m - / -10 SP9MZU -7 / - 11 Partial capture
10-05 15:09 40m - / -8 OE1TKS +6 / - 2 ✓ Closing fragment
10-05 15:06 40m - / -6 R6FMK -9 / - 3 ✓ Closing fragment
10-05 15:03 40m - / -2 YL3CW -4 / - 2 ✓ Closing fragment
10-05 14:33 40m -18 / -6 HA7TM +12 / - 3 ✓ Closing observed
10-05 14:26 40m -16 / -14 R4CCE -15 / +1 5 ✓ Full exchange observed
10-05 14:25 40m - / - HA3HZ -2 / - 2 Partial capture
10-05 14:22 40m -19 / -8 DD7EE -2 / - 7 ✓ Closing observed
10-05 14:20 40m - / - R4CCE -14 / - 2 Partial capture
09-02 19:02 80m - / -17 MW0DNF -17 / - 5 Partial capture
08-31 13:30 20m -1 / - KJ4KFJ - / -15 12 ✓ Closing fragment
08-31 13:27 20m -1 / - EI4JFB - / -15 3 ✓ Closing fragment
08-31 13:25 20m +4 / +3 UA6BCB +3 / -21 6 ✓ Full exchange observed
08-31 13:23 20m +4 / - R3TS -11 / +7 3 ✓ Full exchange observed
08-31 13:20 20m 0 / - UB3BDB - / -12 2 Partial capture
08-31 13:20 20m +3 / - ON3MOH +9 / -7 4 Partial capture
08-30 22:54 160m -4 / -19 F5UKW +8 / -6 8 ✓ Full exchange observed
08-30 22:53 160m -14 / -10 RK8W -9 / - 4 Partial capture
08-30 16:01 80m -15 / -3 RT2P -10 / - 3 ✓ Closing observed
08-30 13:20 20m -5 / - TC30AGU - / -25 3 Partial capture
08-30 00:05 80m - / - F4BYA +1 / - 4 Partial capture
08-30 00:01 80m - / - M9DNC -19 / - 3 Partial capture
08-30 00:00 80m -4 / -3 LX7I +6 / -10 6 ✓ Full exchange observed
08-29 19:36 80m +3 / - P29YY - / - 6 Partial capture
08-29 19:30 80m +4 / - P29YY - / - 6 Partial capture
08-29 19:24 160m - / -8 UD8S -11 / - 24 Partial capture
08-29 07:43 20m - / -7 HB9SDO +1 / - 3 ✓ Closing fragment
08-29 07:35 20m - / 0 RZ3DZ -20 / - 2 Partial capture
08-29 07:28 20m -10 / - BG0DRM - / +5 2 ✓ Closing fragment
08-29 07:04 20m -4 / - EA2KV - / -11 2 ✓ Closing fragment
08-29 07:02 20m -5 / - HA7TM/P -6 / +1 4 Partial capture
08-29 06:59 20m - / +10 DK9NP 0 / - 2 ✓ Closing fragment
08-29 06:40 20m -6 / - DH3LAT - / -18 2 Partial capture
08-29 06:34 20m -2 / - BH2WTV - / -7 5 ✓ Closing fragment
08-29 06:28 20m -11 / - UA3PTY - / -14 2 ✓ Closing fragment
08-29 06:27 20m -11 / -3 RN7O -5 / - 4 ✓ Closing observed
08-29 06:00 20m +4 / - E72T - / -17 2 ✓ Closing fragment
08-29 05:56 20m -3 / - DL5PH - / -21 3 ✓ Closing fragment
08-29 05:54 20m -2 / -22 EA5HEU -7 / -18 6 ✓ Full exchange observed
08-29 05:52 20m -9 / - 9A3K -11 / - 2 ✓ Closing observed
08-27 02:19 20m -8 / - A41KB - / - 4 Partial capture
08-27 02:16 20m -9 / - CU2JX - / - 5 Partial capture
08-27 02:13 20m -3 / - PY5EJ - / -10 4 ✓ Closing fragment
08-27 02:06 20m - / - XQ1KK -5 / - 2 ✓ Closing fragment
08-26 02:44 20m -13 / - OA6AMN - / -22 4 ✓ Closing fragment
08-26 02:35 20m -19 / - AP2AM - / - 2 Partial capture
08-26 02:30 20m -11 / - LU9BML - / - 4 Partial capture
08-26 02:28 20m -9 / - TJ1GD - / -15 2 Partial capture
08-26 02:25 20m -16 / +2 JY5IB -1 / - 6 ✓ Closing observed
08-26 02:23 20m -14 / - 9H4CM - / - 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
150645 -11 1057  RK9UN R6FMK R-06 (x2)
150945  +8 1897  RK9UN OE1TKS -08 (x2)
151115  -7 1539  RK9UN SP9MZU -10 (x11)
80m 
UTC    dB Audio  Message
000245 -14 1012  RK9UN M9DNC JO01
000300  -7 1011  CQ RK9UN NO33
000445  -7  629  RK9UN RV3SBS/P LO04
000515  -1 2849  RK9UN F4BYA JN19 (x4)
160130 -10 2293  RK9UN RT2P -03 (x2)
160245 -15 1011  RT2P RK9UN 73
190200 -19 2362  RK9UN MW0DNF -17 (x5)
20m 
UTC    dB Audio  Message
133045  -1 1094  KJ4KFJ RK9UN NO33 (x12)
135245  -5 1093  CQ RK9UN NO33 (x2)
135415  +1 1094  UB3BDB RK9UN RR73
160m 
UTC    dB Audio  Message
193515 -17 2121  RK9UN UD8S -08 (x2)
225300  -4 2768  RK9UN RK8W -10
225345 -20 1006  RK8W RK9UN NO33
225400 -14 1006  RK9UN RK8W -08
225400  +1  316  RK9UN F5UKW JN12 (x2)
225445  -8 2769  RK8W RK9UN NO33
225500 +11  316  RK9UN F5UKW JN12 (x2)
225545  -3 2768  F5UKW RK9UN -06
225600 +11  316  RK9UN F5UKW R-19
225615  -5 2768  F5UKW RK9UN RR73
225630  +8  316  RK9UN F5UKW 73
225630  +7 1945  RK9UN 9A3K JN65
10m 
UTC    dB Audio  Message
133600  -4 2740  RK9UN F1PBZ -09 (x2)
133630 -14 1972  RK9UN DH1GKS R+07 (x2)
073730 -17 2450  RK9UN IU0VOG JN61
075045 -11  964  RK9UN RA6OF KN87 (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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