RU9MJ — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: MO64

Receiver-side FT8 activity involving RU9MJ, decoded by SO8OO in southeastern Poland. 77 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-22 and 2026-09-02.

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 77 FT8 messages attributed to RU9MJ as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (75%), followed by 40 m (25%). Most decodes (87%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (66%); the estimated median was -18 dB.

Overview

77
Messages attributed
7
UTC dates decoded
14
Active 15-min windows
-18 dB
Estimated median S/N

Bands

80m · 58 40m · 19
First attributed message: 2026-08-22
Last attributed message: 2026-09-02 18:02 UTC

Observed FT8 message patterns

Attributed sample
77 messages
Active dates
7 UTC dates
Estimated median S/N
-18 dB
Estimated 10th-90th percentile
-23 to -11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 51, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 4.

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 RU9MJ 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 RU9MJ

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
MO64 · 33 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
3,446 km (approx.)
Last such locator decoded
2026-09-02 18:01 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 UTCBandRU9MJ S/NCounterpartCounterpart S/NMsgsCapture
09-07 16:13 40m - / -12 R5GG -22 / - 3 ✓ Closing fragment
09-07 16:12 40m - / -16 R4PFY -15 / - 4 Partial capture
09-07 16:09 40m - / -11 R6CW -5 / - 3 ✓ Closing fragment
09-07 16:07 40m - / -14 UB4FGK -6 / - 4 ✓ Closing fragment
09-07 16:06 40m - / -17 R3WDW +13 / - 3 ✓ Closing fragment
09-02 18:02 80m - / -15 9A4ZM +6 / - 3 ✓ Closing fragment
09-02 18:01 80m -11 / -13 RA3TK -16 / - 3 ✓ Closing observed
09-02 17:58 80m - / - HB9ALO -4 / - 2 Partial capture
09-02 17:55 80m -16 / -16 UA3ZQN +8 / - 4 ✓ Closing observed
09-02 17:49 80m - / - R6ZEJ -5 / - 3 Partial capture
08-30 23:24 40m -17 / -3 SN1A -11 / - 5 ✓ Closing observed
08-30 23:21 80m - / - EA1IOK -18 / - 3 Partial capture
08-30 23:21 80m - / - M0NHB -21 / - 3 Partial capture
08-30 23:19 80m -18 / -14 DK2BJ +2 / -11 5 ✓ Full exchange observed
08-30 23:17 80m -20 / -14 IQ4JO +2 / -24 5 ✓ Full exchange observed
08-30 23:14 80m -18 / - YU7AS +18 / -17 6 Partial capture
08-30 23:12 80m - / - IQ4JO +2 / - 2 Partial capture
08-30 23:10 80m -18 / -19 DK9WI +10 / -12 4 ✓ Full exchange observed
08-30 23:09 80m -16 / - F4UJU +8 / -15 3 ✓ Closing observed
08-30 23:07 80m -18 / -4 RM5F -1 / -6 5 ✓ Full exchange observed
08-30 23:05 80m -16 / -14 F4GTB -1 / -13 6 ✓ Full exchange observed
08-30 23:03 80m -11 / - RM5F -5 / -7 2 Partial capture
08-30 23:02 80m -24 / - UN7BDZ - / +1 2 ✓ Closing fragment
08-30 23:01 80m -20 / - F4BYA +3 / -17 3 ✓ Closing observed
08-30 23:00 80m -17 / +8 R9OAE -22 / - 4 ✓ Closing observed
08-29 21:26 80m - / - SN4K -5 / - 5 Partial capture
08-29 21:25 80m - / -8 RD7O -9 / - 5 ✓ Closing fragment
08-29 21:19 80m - / -12 R3YCI -4 / - 4 ✓ Closing fragment
08-29 21:10 80m - / -22 RA3WY -6 / - 4 ✓ Closing fragment
08-28 20:20 80m -24 / -16 DK7TX +1 / -20 3 ✓ Full exchange observed
08-28 20:17 80m -19 / - RA6YDX -14 / - 2 ✓ Closing observed
08-28 20:15 80m -21 / - RL7Z -7 / -15 2 ✓ Closing observed
08-28 20:13 80m - / - RA6YDX -10 / - 2 Partial capture
08-28 20:13 80m -17 / 0 UA3SCU -8 / - 2 ✓ Closing observed
08-28 20:11 80m -20 / -8 R2AL +1 / -7 6 ✓ Full exchange observed
08-28 20:11 80m -18 / -17 RA3M -10 / -6 3 ✓ Full exchange observed
08-28 20:09 80m -20 / -17 IZ0COC +4 / -11 5 ✓ Full exchange observed
08-28 20:08 80m -22 / - EA1B -10 / - 3 ✓ Closing observed
08-28 20:01 80m - / -6 RK4FH +3 / - 3 ✓ Closing fragment
08-28 20:01 80m - / -19 IK0HBN +5 / - 10 ✓ Closing fragment
08-28 19:58 80m - / -10 RA3LBW -4 / - 5 ✓ Closing fragment
08-28 19:58 80m - / -22 ON4IQ -1 / - 2 ✓ Closing fragment
08-28 19:51 80m -24 / -3 SM6NOC +10 / - 3 ✓ Closing observed
08-27 16:59 80m - / - R7CD -3 / - 2 Partial capture
08-27 16:58 80m - / -12 UA6FM -13 / - 3 ✓ Closing fragment
08-27 16:55 80m - / -7 UA3UBV -12 / - 5 ✓ Closing fragment
08-27 16:53 80m - / -1 RK9UM -9 / - 3 ✓ Closing fragment
08-27 16:51 80m - / -4 UA3TCJ -15 / - 3 ✓ Closing fragment
08-27 16:47 80m - / -4 UA3RBM -7 / - 4 Partial capture
08-27 16:47 80m -19 / -9 RA6FC -5 / - 3 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
160745 +14  335  RU9MJ R3WDW 73
160815  -5 1173  RU9MJ UB4FGK R-14
160815  -2  804  RU9MJ R6ZEJ KN98
160845  -6 1172  RU9MJ UB4FGK 73
160915  -4 2042  RU9MJ R6CW -11 (x3)
161215 -13 1659  RU9MJ R4PFY -16 (x3)
161330 -19 1927  RU9MJ R5GG KO92
161345 -15 1659  RU9MJ R4PFY -16
161400 -23 1927  RU9MJ R5GG R-12 (x2)
000845 -12 1454  RU9MJ MI7XHT IO64
80m 
UTC    dB Audio  Message
175015  -3  669  RU9MJ R6ZEJ KN98
175500  +8 1207  RU9MJ UA3ZQN -16 (x3)
175615 -16 2105  UA3ZQN RU9MJ 73
175800  -3  755  RU9MJ HB9ALO JN45 (x2)
175900 -10 2108  RU9MJ RA3TK LO16
180130 -14 2103  CQ RU9MJ MO64
180145 -10 2108  RU9MJ RA3TK LO16 (x2)
180230 -11 2102  RA3TK RU9MJ RR73
180245  +4 2098  RU9MJ 9A4ZM JN86 (x3)
20m 
UTC    dB Audio  Message
190745 -13  597  RU9MJ 5Z4VJ KI88 (x2)
192145  -5 2178  RU9MJ RZ6CO +04 (x2)
010030  +4 2467  RU9MJ IU2VBP JN45 (x4)
015845 -18 1088  RU9MJ CT3MD R-18 (x2)
005545  +3 2640  RU9MJ IK6DLK JN63
013245 -19 2132  RU9MJ ZP5DVD RR73
013645  -2 1336  RU9MJ K1HC FN53 (x3)

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.

Explore CW reception at SO8OO

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