RA3SK — 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: KO94

Receiver-side FT8 activity involving RA3SK, decoded by SO8OO in southeastern Poland. 95 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-27 and 2026-10-07.

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 95 FT8 messages attributed to RA3SK as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (84%), followed by 80 m (13%) and 40 m (3%). Most decodes (81%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -6 dB.

Overview

95
Messages attributed
15
UTC dates decoded
22
Active 15-min windows
-6 dB
Estimated median S/N

Bands

160m · 80 80m · 12 40m · 3
First attributed message: 2026-06-27
Last attributed message: 2026-10-07 21:19 UTC

Observed FT8 message patterns

Attributed sample
95 messages
Active dates
15 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-15 to +9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 65.

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 RA3SK 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 RA3SK

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
KO94 · 21 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,273 km (approx.)
Last such locator decoded
2026-09-17 00:27 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 UTCBandRA3SK S/NCounterpartCounterpart S/NMsgsCapture
10-22 17:05 160m - / - RK4FD -5 / - 5 Partial capture
10-17 17:03 160m - / -1 UA3QNA +1 / - 2 Partial capture
10-17 17:02 160m - / - RZ6BS -16 / - 3 Partial capture
10-07 21:18 160m -6 / - RV9CX/M - / -20 2 Partial capture
10-07 21:08 160m -8 / -1 RM5F -4 / -4 7 ✓ Full exchange observed
10-07 20:53 160m - / - RM5F -9 / - 4 Partial capture
10-07 20:53 160m -9 / -1 RU6CH -8 / -3 4 Partial capture
10-07 20:51 160m - / - DL7ET -12 / - 2 Partial capture
10-07 20:48 160m -11 / - RV9CX/M - / -24 6 Partial capture
10-07 20:46 160m -9 / - R8KAW/P - / -20 2 Partial capture
10-06 16:46 160m -5 / -13 RG7O -14 / -4 6 ✓ Full exchange observed
10-06 16:45 160m - / - RK4FD +3 / - 6 Partial capture
10-06 16:42 160m +2 / - R9CS/P - / -3 6 ✓ Closing fragment
10-03 16:40 160m - / - R7DX +4 / - 4 Partial capture
10-03 16:40 160m - / - RK4FD -7 / - 6 Partial capture
10-03 16:40 160m - / - UA3ZUX +4 / - 2 Partial capture
10-03 16:39 160m -14 / - RO2E/P - / -20 3 ✓ Closing fragment
09-26 17:44 80m - / - R3PLA -4 / - 2 Partial capture
09-26 17:42 80m -8 / - RZ0SW -21 / -5 3 ✓ Closing observed
09-25 19:07 80m - / -11 RD9M/3 -14 / - 2 Partial capture
09-19 15:13 80m - / - RK4FD 0 / - 6 Partial capture
09-17 00:29 80m - / - DO9BAU 0 / - 13 Partial capture
09-17 00:28 80m - / -3 DK7ZT -4 / - 5 Partial capture
09-17 00:28 80m - / -2 YO4NF +8 / - 2 Partial capture
09-17 00:23 80m +7 / - RI1FJZ - / -9 10 ✓ Closing fragment
09-16 19:12 160m - / - RK4FD +7 / - 5 Partial capture
09-16 19:10 160m -2 / - RI1FJZ - / -10 4 ✓ Closing fragment
09-13 15:59 160m - / - SP9UPH -7 / - 3 Partial capture
09-13 15:55 160m -17 / - R9CS/P - / -2 9 ✓ Closing fragment
09-11 19:11 160m -4 / - RC0AT/P - / -12 13 Partial capture
09-07 18:32 160m +11 / - RC0AT/P - / -18 7 ✓ Closing fragment
09-07 13:58 40m -12 / - RC0AT/P - / - 2 Partial capture
08-30 17:38 160m -5 / - UA3GT - / -6 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
210945 -14  865  RM5F RA3SK -04
211000 -10  884  RA3SK RM5F R-03
211015  -7  865  RM5F RA3SK RR73
211845  -7  865  RV9CX/M RA3SK -20 (x2)
170230 -18 1645  RA3SK RZ6BS KN96
170300  +1 1335  RA3SK UA3QNA -01
170300 -15 1645  RA3SK RZ6BS KN96
170330  +1 1335  RA3SK UA3QNA -01
170330 -16 1645  RA3SK RZ6BS KN96
170530  -7  769  RA3SK RK4FD LO22 (x5)
80m 
UTC    dB Audio  Message
003500  -3 2402  RA3SK DO9BAU JO62 (x2)
151300  +0  886  RA3SK RK4FD LO22 (x6)
190715  -6 1800  RA3SK RD9M/3 R-11 (x2)
174230  -7  490  RZ0SW RA3SK -05 (x2)
174345 -21 1310  RA3SK RZ0SW 73
174415  -4  490  RA3SK R3PLA KO84 (x2)
40m 
UTC    dB Audio  Message
135815 -11 1668  RC0AT/P RA3SK KO94 (x2)
162300  +2  519  RA3WY/P RA3SK -15

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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