RC3DN — 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: KO95

Receiver-side FT8 activity involving RC3DN, decoded by SO8OO in southeastern Poland. 528 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 19 UTC dates in the available aggregate history. Observed between 2026-07-31 and 2026-10-10.

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 528 FT8 messages attributed to RC3DN as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (67%), followed by 20 m (18%) and 80 m (15%). Most decodes (61%) fell within the six-hour window 03:00-09:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

528
Messages attributed
19
UTC dates decoded
104
Active 15-min windows
-12 dB
Estimated median S/N

Bands

80m · 80 40m · 355 20m · 93
First attributed message: 2026-07-31
Last attributed message: 2026-10-10 04:33 UTC

Observed FT8 message patterns

Attributed sample
528 messages
Active dates
19 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-21 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 156, moderate (-15 to -9 dB) 217, strong (≥ -8 dB) 155.

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 RC3DN 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 RC3DN

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
KO95 · 312 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,309 km (approx.)
Last such locator decoded
2026-10-10 04:33 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 UTCBandRC3DN S/NCounterpartCounterpart S/NMsgsCapture
10-10 04:31 40m -12 / - LY2TS - / -3 3 ✓ Closing fragment
10-10 04:31 40m - / -7 RM4N -11 / - 2 Partial capture
10-10 04:29 40m -12 / -5 RA3GDV -14 / -4 4 ✓ Full exchange observed
10-08 19:41 80m - / - E77EA +6 / - 2 Partial capture
10-08 19:36 80m -9 / -13 SV2FNT -2 / -22 7 ✓ Full exchange observed
10-06 21:49 80m -1 / - YU65AEC - / - 3 Partial capture
10-06 21:45 80m +2 / - UA9SY - / -10 2 Partial capture
10-06 21:36 80m +2 / -17 IK0YUJ +8 / - 4 Partial capture
10-06 21:33 80m -4 / -16 DK3ASE +16 / -9 5 ✓ Full exchange observed
10-06 21:24 80m -9 / -16 IQ4JO +10 / -18 5 ✓ Full exchange observed
10-06 21:16 80m -6 / -7 SQ8NA +9 / -7 5 ✓ Full exchange observed
10-06 21:07 80m -9 / -11 SQ8AZT +1 / -13 5 ✓ Full exchange observed
10-06 21:02 80m - / -9 HA7TM +9 / - 2 ✓ Closing fragment
10-06 20:59 80m - / -2 RX3ASQ -13 / - 2 ✓ Closing fragment
10-06 20:58 80m - / -7 UC6D +10 / - 2 ✓ Closing fragment
10-06 20:56 80m -13 / - LZ936BA - / -15 2 Partial capture
10-06 20:48 80m - / -16 EU1EU -11 / - 3 Partial capture
10-06 20:47 80m - / - F5RAV -10 / - 2 Partial capture
10-06 20:47 80m - / - R2AL +2 / - 3 Partial capture
10-06 20:42 80m -7 / -14 LZ936BA -5 / -15 5 Partial capture
10-06 20:40 80m -8 / - AO5CV - / - 2 Partial capture
09-28 02:54 40m - / -2 DK5WL +3 / - 2 ✓ Closing fragment
09-28 02:53 40m - / - PE1NPS +4 / - 4 Partial capture
09-28 02:42 40m - / +2 PD1DBL -2 / - 2 ✓ Closing fragment
09-28 02:40 40m - / -9 OD5ZZ -12 / - 2 ✓ Closing fragment
09-20 20:31 40m - / -8 DL6UM +9 / - 4 Partial capture
09-20 20:27 40m - / -14 IK2UJS -2 / - 3 Partial capture
09-20 07:14 40m -24 / +9 OH3MB -16 / - 3 ✓ Closing observed
09-20 07:11 40m -24 / -18 MI0NWA -14 / - 2 ✓ Closing observed
09-20 07:09 40m -24 / -15 SQ2PHC 0 / - 3 ✓ Closing observed
09-20 07:00 40m -22 / -14 DL1BFR -4 / -14 5 ✓ Full exchange observed
09-20 06:59 40m -19 / -10 YL2TM -10 / - 3 Partial capture
09-20 06:57 40m -20 / - R1BPQ - / - 2 ✓ Closing fragment
09-20 06:55 40m -16 / -6 SP9MQS +14 / - 2 Partial capture
09-20 06:53 40m -21 / -10 YL2TM -13 / - 2 Partial capture
09-20 06:50 40m -23 / -6 SP4OIK +7 / - 3 ✓ Closing observed
09-20 06:49 40m - / -11 YO8RCA -2 / - 2 Partial capture
09-20 06:46 40m - / -24 G8KHF -11 / - 4 Partial capture
09-20 06:42 40m - / -11 YO8RCA -4 / - 2 Partial capture
09-20 06:36 40m -21 / - RU3KV - / 0 2 ✓ Closing fragment
09-20 06:33 40m -18 / -9 LA3LUA -7 / - 3 ✓ Closing observed
09-20 06:30 40m - / -8 YO8RCA 0 / - 4 Partial capture
09-20 06:22 40m - / -14 PD0PMF -4 / - 4 Partial capture
09-20 06:22 40m - / -1 DL7ARV 0 / - 3 ✓ Closing fragment
09-20 06:17 40m -21 / -10 M0UTD -2 / - 3 ✓ Closing observed
09-20 06:17 40m - / - PE1NPS -1 / - 3 Partial capture
09-20 06:14 40m -17 / +5 R3WDW -10 / - 3 ✓ Closing observed
09-20 06:13 40m - / -8 OZ3MC -7 / - 2 Partial capture
09-20 06:08 40m -22 / - DL4SZB -2 / -10 3 ✓ Closing observed
09-20 06:03 40m -22 / -3 OH7OBJ -13 / -12 4 ✓ 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
025345  +2 2338  RC3DN PE1NPS JO22 (x3)
025445  +5 1813  RC3DN DK5WL -02 (x2)
042945 -14 2274  RA3GDV RC3DN KO95
043000 -14 1905  RC3DN RA3GDV -05
043015 -11 2274  RA3GDV RC3DN R-04 (x2)
043100 -14 2390  RC3DN RM4N -07 (x2)
043130 -14 2273  LY2TS RC3DN KO95 (x3)
043300 -13 2272  YO8RAW RC3DN KO95
80m 
UTC    dB Audio  Message
214815  -3 2233  EC3A RC3DN KO95
214900  +4 2234  OM2WW RC3DN KO95
214945  -5 2233  YU65AEC RC3DN KO95 (x3)
215200  -4 2234  OM3PR RC3DN KO95
193630  -9 2237  SV2FNT RC3DN KO95
193645  -4 1139  RC3DN SV2FNT -13
193700  -3 2237  SV2FNT RC3DN R-22
193715  +0 1139  RC3DN SV2FNT RR73
193730 -12 2237  SV2FNT RC3DN R-22
193745  -1 1138  RC3DN SV2FNT RR73
193800 -12 2237  SV2FNT RC3DN R-22
194100  +3  644  RC3DN E77EA JN84 (x2)
20m 
UTC    dB Audio  Message
094630  -8 1620  RC3DN PD0MNO -05 (x2)
094745 -17 1537  PD0MNO RC3DN 73
094930 -13 1537  OM7AMA RC3DN R-15
095900  -3  960  RC3DN LA1XJA -02 (x3)
100230 -13 2145  RC3DN M7JVT -05 (x2)
101100 -13  485  RC3DN RI1FJL -08
101300 -12 1413  RC3DN LZ5UY -09
101315 -15 1539  LZ5UY RC3DN R-15 (x2)
102100 -19 1538  RW6A/P RC3DN KO95
102215  -4 1160  RC3DN RW6A/P +04

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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