RA3XDX — 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: European Russia Most frequent locator attributed to this token: KO85

Receiver-side FT8 activity involving RA3XDX, decoded by SO8OO in southeastern Poland. 2,306 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 59 UTC dates in the available aggregate history. Observed between 2026-07-09 and 2026-10-22.

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 2,306 FT8 messages attributed to RA3XDX as the transmitting token by decoded message structure across 59 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (38%), followed by 80 m (35%) and 160 m (21%). Most decodes (67%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (79%); the estimated median was -1 dB.

Overview

2,306
Messages attributed
59
UTC dates decoded
328
Active 15-min windows
-1 dB
Estimated median S/N

Bands

First attributed message: 2026-07-09
Last attributed message: 2026-10-22 05:11 UTC

Observed FT8 message patterns

Attributed sample
2,306 messages
Active dates
59 UTC dates
Estimated median S/N
-1 dB
Estimated 10th-90th percentile
-13 to +10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 141, moderate (-15 to -9 dB) 347, strong (≥ -8 dB) 1,818.

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.

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 RA3XDX

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
KO85 · 1,421 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,193 km (approx.)
Last such locator decoded
2026-10-18 05:02 UTC

Other locator fields attributed to this token: KO95 (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 UTCBandRA3XDX S/NCounterpartCounterpart S/NMsgsCapture
10-22 05:10 40m -9 / -7 OA4ENG -17 / -13 3 ✓ Full exchange observed
10-19 05:35 40m -1 / - R2AZK/1 - / -16 6 Partial capture
10-18 05:01 40m +2 / +3 HB0/SP6LUT -14 / -7 4 Partial capture
10-18 04:56 40m +3 / - M0ICR/P - / - 9 Partial capture
10-18 04:45 40m -1 / - PE1PBQ/J - / - 8 Partial capture
10-17 20:37 160m -8 / - 4J3DJ - / - 2 Partial capture
10-16 17:02 80m - / - R2AL 0 / - 3 Partial capture
10-16 17:02 80m +8 / - RC9WC - / -5 2 ✓ Closing fragment
10-16 17:00 80m +4 / - RZ0SW - / -14 2 ✓ Closing fragment
10-16 16:58 80m +6 / - SV5BYP - / -14 3 ✓ Closing fragment
10-16 16:21 40m - / -9 M1WLK -9 / - 2 Partial capture
10-16 16:21 40m +14 / - JT1DN - / -18 3 ✓ Closing fragment
10-16 15:34 40m - / +1 UA4CKN -9 / - 3 Partial capture
10-16 15:32 40m +15 / -7 RK4UZ -11 / -11 4 ✓ Full exchange observed
10-16 15:31 40m +13 / - RU3DNN - / -16 2 ✓ Closing fragment
10-16 15:31 40m - / -9 SP3IPA -6 / - 2 Partial capture
10-16 15:30 40m +16 / - UA9LLE - / - 3 ✓ Closing fragment
10-16 10:53 10m -2 / - TR8CA - / - 3 Partial capture
10-16 10:51 10m +2 / - 4U1A - / - 3 Partial capture
10-16 10:28 10m -10 / - TA2LE - / -20 7 Partial capture
10-16 10:22 10m -2 / - OM1FED - / 0 6 ✓ Closing fragment
10-16 04:33 80m +3 / - PJ4/DH8BQA - / -24 6 Partial capture
10-16 04:29 80m - / -15 PJ4/DH8BQA -10 / - 2 Partial capture
10-16 04:27 80m -8 / - R4AGE/P - / -22 4 Partial capture
10-16 04:23 80m -5 / - R9CS/P - / - 2 Partial capture
10-16 04:21 80m -1 / - YV6BXN - / - 4 Partial capture
10-16 04:21 80m - / -4 OK1HEH +2 / - 2 Partial capture
10-16 04:21 80m - / - EB3JT -11 / - 7 Partial capture
10-16 04:18 80m -2 / - VP2MAW - / -19 6 ✓ Closing fragment
10-16 04:15 80m - / -6 OK1HEH +4 / - 2 Partial capture
10-16 04:14 80m - / -4 F4FSY -9 / - 2 Partial capture
10-16 04:14 80m - / - IU1HGN -15 / - 4 Partial capture
10-16 04:10 80m -2 / - VP2MAW - / -13 4 Partial capture
10-16 03:29 80m +1 / - VP2MAW - / -16 64 Partial capture
10-16 03:18 80m +8 / - VP2MAW - / - 7 Partial capture
10-16 03:12 80m +9 / - VP2MAW - / -17 7 Partial capture
10-15 17:58 40m -9 / - JT1DN - / - 3 Partial capture
10-15 17:50 40m -3 / - JT1DN - / - 2 Partial capture
10-15 17:34 40m -7 / - JT1DN - / - 14 Partial capture
10-15 12:53 10m -18 / - MM0UIO - / +5 4 ✓ Closing fragment
10-15 12:51 10m -15 / - G3ZRN - / +9 3 Partial capture
10-15 12:46 10m -9 / - HB9ACA - / -25 5 ✓ Closing fragment
10-15 04:50 40m - / - DF4WQ -16 / - 2 Partial capture
10-15 02:47 40m -16 / 0 VP2MAW +5 / - 4 ✓ Closing observed
10-14 16:52 40m +6 / - UA9UIS - / -4 2 ✓ Closing fragment
10-14 16:50 40m +10 / - BG2EFX - / -17 3 Partial capture
10-14 16:49 40m +10 / -1 SV1DKR -9 / -1 5 ✓ Full exchange observed
10-14 16:46 40m +5 / - 9M2SWI - / -16 6 ✓ Closing fragment
10-14 16:28 40m -1 / - S79VU - / -13 2 ✓ Closing fragment
10-14 03:11 80m +8 / -12 GM6URC -15 / -12 3 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
050130  +4  348  HB0/SP6LUT RA3XDX KO85 (x2)
050345 -14  930  RA3XDX HB0/SP6LUT +03
050400  -2  348  HB0/SP6LUT RA3XDX R-07
053545 -24 2813  R2AZK/1 RA3XDX R-16 (x5)
053900 -12 2482  RA3XDX FM/VE3DZ -14
053915  +6 2813  R2AZK/1 RA3XDX R-07
053930 -10 2482  RA3XDX RR73; F6FTB <...> -10
051030 -17 2248  RA3XDX OA4ENG -07
051045  -9 2616  OA4ENG RA3XDX R-13 (x2)
160m
UTC    dB Audio  Message
180415 -10  247  R4WR RA3XDX -15 (x2)
180500 -15  905  RA3XDX RC6OZ KN98
193430  +3 2764  TA4EE RA3XDX KO85 (x9)
203730  -8  569  4J3DJ RA3XDX KO85 (x2)
204415 -10 1476  RA3XDX RA0AF -18
80m
UTC    dB Audio  Message
043545  +0 2758  PJ4/DH8BQA RA3XDX R-24 (x3)
163930  -8 2587  OD5YA RA3XDX KO85
165800  +5 2791  SV5BYP RA3XDX KO85 (x3)
165915 -24 1860  RA3XDX R3CE KO85
170030  -1 2791  RZ0SW RA3XDX -14 (x2)
170200  +7 2792  RC9WC RA3XDX R-05 (x2)
170245  +1  647  RA3XDX R2AL KO85 (x3)
10m
UTC    dB Audio  Message
102830 -18 1515  TA2LE RA3XDX KO85 (x7)
105100  +0 2275  4U1A RA3XDX KO85 (x3)
105300  +8 2275  TR8CA RA3XDX KO85 (x3)
105500  -6 2275  4U1A RA3XDX KO85
105630  +1 2275  TR8CA RA3XDX 73
20m
UTC    dB Audio  Message
080900 +21  372  <...> RA3XDX KO85
075615 +11 2982  R9JAU RA3XDX KO85 (x5)
075915 +15 2983  TA2NJH RA3XDX KO85
075945 +15 2983  EA1IOK RA3XDX -11 (x2)
171415 -10 2980  TK/F6FDY RA3XDX KO85 (x6)
60m
UTC    dB Audio  Message
031400  +3  439  RA3XDX OJ0JR -10 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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