RA3WJR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO81

Receiver-side FT8 activity involving RA3WJR, decoded by SO8OO in southeastern Poland. 128 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-15.

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 128 FT8 messages attributed to RA3WJR as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (54%), followed by 20 m (46%). Most decodes (77%) fell within the six-hour window 08:00-14:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

128
Messages attributed
5
UTC dates decoded
29
Active 15-min windows
-15 dB
Estimated median S/N

Bands

20m · 59 10m · 69
First attributed message: 2026-06-09
Last attributed message: 2026-08-15 08:48 UTC

Observed FT8 message patterns

Attributed sample
128 messages
Active dates
5 UTC dates
Estimated median S/N
-15 dB
Estimated 10th-90th percentile
-22 to +7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 59, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 42.

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 RA3WJR 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 RA3WJR

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
KO81 · 65 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,083 km (approx.)
Last such locator decoded
2026-08-15 08:45 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 UTCBandRA3WJR S/NCounterpartCounterpart S/NMsgsCapture
08-19 08:11 10m - / -5 IT9IRV -20 / - 2 ✓ Closing fragment
08-15 09:08 20m - / +4 SM6UQL -14 / - 2 ✓ Closing fragment
08-15 08:45 20m -13 / -16 OH2ZZ -23 / - 2 Partial capture
08-15 08:35 20m -11 / - TA3NHM - / -8 2 Partial capture
08-15 08:29 20m -18 / - EA5AR - / -13 3 Partial capture
07-10 18:24 40m - / - RW6HPS -16 / - 2 ✓ Closing fragment
07-10 14:31 20m - / - PD2WL -12 / - 3 ✓ Closing fragment
07-10 14:01 20m -17 / - KF0YOB - / -11 3 ✓ Closing fragment
07-10 13:48 20m -22 / - F6FNF - / -11 2 Partial capture
07-10 13:38 20m -18 / -23 M1WLK -22 / -11 6 Partial capture
07-10 13:17 20m -21 / -11 RK9UN -7 / - 3 ✓ Closing observed
07-07 08:02 20m - / -11 DL0SOP -4 / - 2 ✓ Closing fragment
07-02 16:12 20m -18 / - 8A1WWA - / - 2 Partial capture
07-02 15:58 20m -16 / - DK1BX - / - 2 Partial capture
07-02 11:39 20m -20 / - E75AA - / -13 2 Partial capture
07-02 11:28 20m -23 / - DL6EL -7 / -10 4 ✓ Closing observed
07-02 11:07 20m -24 / -12 R3TAR -17 / - 2 Partial capture
07-02 10:22 20m -17 / - R1BED - / - 3 Partial capture
07-02 10:20 20m -22 / - SN4WWA - / - 2 Partial capture
06-26 22:33 20m -18 / -9 SV3AUW -16 / 0 5 ✓ Full exchange observed
06-26 22:32 20m -17 / - PD2XX - / -4 3 ✓ Closing fragment
06-26 22:29 20m - / -4 A71UN -10 / - 2 ✓ Closing fragment
06-26 22:28 20m -20 / -4 EA8UP -2 / +6 7 ✓ Full exchange observed
06-26 22:24 20m -17 / - JA0FVU - / - 2 Partial capture
06-26 22:16 20m - / -9 UN0GY 0 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
151330 -14 1665  RA3WJR OZ1TDK +09
081130 -19 1375  RA3WJR IT9IRV -05 (x2)
20m 
UTC    dB Audio  Message
143130 -14 1464  RA3WJR PD2WL RR73 (x3)
082945 -21 1817  EA5AR RA3WJR KO81 (x3)
083300 -15 2359  SM0WLL RA3WJR KO81
083515 -10 2359  TA3NHM RA3WJR KO81 (x2)
083645 -18 2360  SV7LYG RA3WJR KO81
084530 -13 2359  OH2ZZ RA3WJR KO81
084545 -23 1768  RA3WJR OH2ZZ -16
084815 -14 2359  R1BED RA3WJR R-11
090830 -13 1030  RA3WJR SM6UQL +04 (x2)
40m 
UTC    dB Audio  Message
061245 -23 1796  RA3WJR R3DIH KO95
181100 -13  997  RA3WJR RK3AQ -12
182300 -18 2312  RA3WJR UB6LWX RR73
182400 -14 1805  RA3WJR RW6HPS LN15 (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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