R4ML — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO44

Receiver-side FT8 activity involving R4ML, decoded by SO8OO in southeastern Poland. 2,233 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 66 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-08.

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 2,233 FT8 messages attributed to R4ML as the transmitting token by decoded message structure across 66 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (86%), followed by 40 m (14%). Most decodes (58%) fell within the six-hour window 02:00-08:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -6 dB.

Overview

2,233
Messages attributed
66
UTC dates decoded
401
Active 15-min windows
-6 dB
Estimated median S/N

Bands

40m · 321 20m · 1,912
First attributed message: 2026-06-06
Last attributed message: 2026-09-08 15:34 UTC

Observed FT8 message patterns

Attributed sample
2,233 messages
Active dates
66 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-13 to +6.6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 95, moderate (-15 to -9 dB) 678, strong (≥ -8 dB) 1,460.

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 R4ML 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 R4ML

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
LO44 · 410 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,908 km (approx.)
Last such locator decoded
2026-09-08 15:34 UTC

Other locator fields attributed to this token: LO34 (1).

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 UTCBandR4ML S/NCounterpartCounterpart S/NMsgsCapture
09-08 15:33 40m -4 / - SQ9SET - / -13 3 Partial capture
09-08 15:32 40m -3 / +3 RK3YWA -5 / +6 6 ✓ Full exchange observed
09-08 15:29 40m -5 / - SP100PKP - / - 2 Partial capture
09-08 15:25 40m -2 / - VJ6X - / -13 2 Partial capture
09-08 15:23 40m -2 / -4 UB3YCK +4 / +5 6 ✓ Full exchange observed
09-08 05:33 40m -8 / - ER1CW - / -11 2 ✓ Closing fragment
09-08 05:31 40m -9 / - SP3DOF - / -12 3 ✓ Closing fragment
09-08 05:29 40m -8 / - SP7SZJ - / -10 3 ✓ Closing fragment
09-08 04:40 40m -14 / -2 R3WF -14 / +9 4 ✓ Full exchange observed
09-08 04:37 40m - / -7 UA3RAU +12 / - 2 ✓ Closing fragment
09-08 04:30 40m -18 / -23 E75FM -8 / -16 4 ✓ Full exchange observed
09-08 03:01 40m - / -13 UA6BGM -10 / - 2 ✓ Closing fragment
09-08 02:57 80m - / -19 UB4CJS -14 / - 4 Partial capture
09-08 02:56 80m - / -18 IZ8VYU +12 / - 2 ✓ Closing fragment
09-06 04:07 40m -12 / - UB4HPQ - / -7 2 ✓ Closing fragment
09-06 04:05 40m -16 / - TA1CQ - / -10 3 Partial capture
09-06 04:00 40m -22 / -14 LA9H -1 / -11 4 Partial capture
09-06 03:51 40m -14 / -2 LA1QRO -16 / - 4 ✓ Closing observed
09-06 03:46 40m -9 / -13 OU7M/P +3 / -10 3 ✓ Full exchange observed
09-06 03:41 40m -10 / -8 LA5LDX/P -18 / -14 3 ✓ Full exchange observed
09-06 03:39 40m - / -18 LA4O -8 / - 2 ✓ Closing fragment
09-06 03:33 40m -10 / - OE4BHF - / - 2 Partial capture
09-06 03:23 40m - / +3 LA4O -8 / - 2 Partial capture
09-06 03:23 40m -6 / - SP9WLC - / - 2 Partial capture
09-06 03:16 40m - / -13 SY1BKQ -1 / - 3 Partial capture
09-05 03:50 40m -6 / - S57TW - / -7 3 ✓ Closing fragment
09-05 03:46 40m -8 / - SP5KG - / -2 3 Partial capture
09-05 03:42 40m -2 / - SP9DPM/P - / - 2 Partial capture
09-05 02:59 40m -12 / - IZ8GUU - / - 3 Partial capture
09-05 02:53 40m -14 / - SO100PKP - / +8 2 Partial capture
09-05 02:44 40m -10 / - RI1FJL - / -13 4 Partial capture
09-04 16:29 40m -8 / -10 EU2AAI +1 / -3 7 ✓ Full exchange observed
09-04 02:47 40m -14 / -20 F5OAM -14 / -15 4 ✓ Full exchange observed
09-04 02:46 40m -12 / - <...> - / -12 2 Partial capture
09-03 03:29 40m -14 / -14 OZ1KZX -8 / -3 7 ✓ Full exchange observed
09-03 03:27 40m -14 / - HG0NPJ - / - 2 ✓ Closing fragment
09-03 03:26 40m -13 / +4 OH3DJP -13 / - 3 ✓ Closing observed
09-02 16:42 40m - / +4 RN5AA -7 / - 2 ✓ Closing fragment
09-02 16:41 40m -8 / - R8DX - / -2 2 Partial capture
09-02 16:39 40m - / -7 UB3YCK -2 / - 7 Partial capture
09-02 16:36 40m -4 / +2 SP2SGZ -7 / -17 2 Partial capture
09-02 16:36 40m -5 / -6 UB3ZKO -17 / - 3 ✓ Closing observed
09-02 16:33 40m - / -11 DG0KS -2 / - 2 ✓ Closing fragment
09-02 16:33 40m - / -5 R7FT -4 / - 2 ✓ Closing fragment
09-02 04:26 40m - / -7 R6AR -6 / - 2 ✓ Closing fragment
09-02 04:24 40m - / -9 R2GBR -9 / - 2 ✓ Closing fragment
09-02 04:23 40m -19 / +5 RA6LTD -11 / -1 2 Partial capture
09-01 15:43 40m - / -2 R6OAG -13 / - 2 ✓ Closing fragment
09-01 15:41 40m -3 / 0 UB4FGK -15 / +3 3 ✓ Full exchange observed
09-01 15:40 40m -4 / - UB3YCK - / - 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
152600  +0  699  VJ6X R4ML R-13
152700  -7  699  YB2TTM R4ML LO44
152800  -3  699  SP8WB R4ML LO44
152845  -8  698  BG2GWN R4ML LO44
152945  -6  698  SP100PKP R4ML LO44 (x2)
153200  -4  698  RK3YWA R4ML LO44
153215  -1 2030  R4ML RK3YWA +03
153230  -5  698  RK3YWA R4ML R+06
153245 -10 2030  R4ML RK3YWA RRR
153300  +0  698  RK3YWA R4ML 73
153315  -4 2030  R4ML RK3YWA 73
153345  +0  698  SQ9SET R4ML LO44 (x3)
80m 
UTC    dB Audio  Message
025615 +12  665  R4ML IZ8VYU -18 (x2)
025745 -12 2455  R4ML UB4CJS -19 (x4)
20m 
UTC    dB Audio  Message
131730  +5  460  G8RZ R4ML LO44 (x2)
131815  -2  641  R4ML G8RZ RR73
132000  -2  454  MM0TBH R4ML LO44 (x3)
132130  -8  451  IU3VHR R4ML LO44
132145  +0  547  R4ML IU3VHR -13
132200  +5  450  IU3VHR R4ML R+03
132215  -4  548  R4ML IU3VHR RR73
132230  +6  449  IU3VHR R4ML 73
132300  +3  447  LY1SR R4ML LO44 (x4)
10m 
UTC    dB Audio  Message
131115 -14  752  R4ML UA6B R+11 (x2)
122300  -6 2008  R4ML HB9CXZ +12 (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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