RT3D — 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: KO84

Receiver-side FT8 activity involving RT3D, decoded by SO8OO in southeastern Poland. 352 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 40 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-02.

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 352 FT8 messages attributed to RT3D as the transmitting token by decoded message structure across 40 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (67%), followed by 20 m (26%) and 80 m (7%). Most decodes (75%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -6.3 dB.

Overview

352
Messages attributed
40
UTC dates decoded
101
Active 15-min windows
-6.3 dB
Estimated median S/N

Bands

80m · 23 40m · 236 20m · 93
First attributed message: 2026-06-07
Last attributed message: 2026-10-02 23:12 UTC

Observed FT8 message patterns

Attributed sample
352 messages
Active dates
40 UTC dates
Estimated median S/N
-6.3 dB
Estimated 10th-90th percentile
-15 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 35, moderate (-15 to -9 dB) 100, strong (≥ -8 dB) 217.

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 RT3D 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 RT3D

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
KO84 · 236 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,150 km (approx.)
Last such locator decoded
2026-10-02 23:12 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 UTCBandRT3D S/NCounterpartCounterpart S/NMsgsCapture
10-13 22:45 40m - / -17 VO1BE -6 / - 4 Partial capture
10-03 23:55 40m - / - UA9YDR -14 / - 2 ✓ Closing fragment
10-02 23:49 40m - / - EA5JKT -22 / - 2 Partial capture
10-02 23:44 40m - / - EA5JKT -19 / - 3 Partial capture
10-02 23:09 40m -5 / - Z61DX - / - 5 Partial capture
10-02 21:45 40m - / -15 PE1NPS +4 / - 4 ✓ Closing fragment
10-02 21:41 40m - / - PE1NPS -8 / - 4 Partial capture
10-02 21:40 40m - / 0 F6FHZ -14 / - 6 Partial capture
10-02 21:36 40m - / - F1IQH -2 / - 4 Partial capture
10-01 22:49 40m -23 / - YC0VM - / - 3 Partial capture
09-30 23:07 80m 0 / -3 Z61DX +11 / - 3 ✓ Closing observed
09-29 22:14 80m -4 / - LZ73TRC - / -18 4 Partial capture
09-28 23:38 40m - / -5 EC3A -12 / - 2 Partial capture
09-28 23:37 40m -6 / - SX2LGT - / -14 2 ✓ Closing fragment
09-28 23:17 40m -13 / - V47YA - / - 3 Partial capture
09-25 16:12 40m - / -16 RU3OH -11 / - 4 ✓ Closing fragment
09-25 16:04 40m -10 / -4 RG5A -3 / +1 10 ✓ Full exchange observed
09-25 16:02 40m -10 / - PE1NPS -8 / -14 7 Partial capture
09-25 16:01 40m -8 / -3 R6ZB -19 / - 2 ✓ Closing observed
09-25 15:59 40m -15 / -3 SN100PKP -6 / -14 2 Partial capture
09-25 15:57 40m -13 / - 9A/G3VCQ - / - 3 Partial capture
09-23 22:50 40m -1 / - RI1FJZ - / - 6 Partial capture
09-23 22:01 40m -12 / - RI1FJZ - / - 4 Partial capture
09-23 17:30 40m -9 / - 9A170TESLA - / - 4 Partial capture
09-23 17:28 40m -4 / - ON2VHF/P - / - 4 Partial capture
09-21 23:57 40m +9 / - KX7C - / - 4 Partial capture
09-21 23:50 40m +2 / - KP4QVQ - / - 5 Partial capture
09-21 23:44 40m - / - F6FHZ -13 / - 5 Partial capture
09-21 23:42 40m +7 / - CE1KR -13 / -18 6 ✓ Closing observed
09-21 23:40 40m - / - IU8RFW -9 / - 5 Partial capture
09-21 23:38 40m -2 / -20 KB3Z -5 / -19 6 ✓ Full exchange observed
09-18 21:05 40m +1 / - II7IAME - / -19 3 Partial capture
09-12 16:59 40m -1 / - II7IAME - / - 2 Partial capture
09-12 16:57 40m -5 / -15 W1AW/4 -6 / - 4 Partial capture
09-10 23:45 40m -12 / - CR7BRV - / -8 3 ✓ Closing fragment
09-10 23:41 40m -10 / - WB8CQV - / - 4 Partial capture
09-10 16:39 40m - / - F4BJN -10 / - 3 Partial capture
09-10 16:37 40m -11 / - F4JXY/P - / - 3 Partial capture
09-07 21:01 40m -6 / - SN40KZE - / - 2 Partial capture
09-07 20:57 40m 0 / - DL2EAD/QRP - / -2 2 Partial capture
09-07 16:48 40m -3 / - OZ/DH8TOM - / -12 3 Partial capture
09-04 22:00 40m -11 / - SO100PKP - / -13 2 Partial capture
09-03 23:30 40m +1 / - <...> - / -21 3 Partial capture
09-03 23:30 40m - / -14 EG42SDC -2 / - 2 Partial capture
09-03 23:29 40m 0 / - XQ3MCC - / - 2 Partial capture
09-03 23:23 40m +3 / - VA1MM - / - 7 Partial capture
09-03 22:48 40m +3 / - RU5A/M - / -13 3 Partial capture
09-03 22:13 40m -6 / - <...> - / -14 2 Partial capture
09-03 22:11 40m +2 / - ZS6NL - / - 2 Partial capture
09-03 22:08 40m -4 / - HI8J - / - 5 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
231130  -6 1104  Z61DX RT3D KO84 (x3)
234400 -19 2030  RT3D EA5JKT IM99 (x5)
235545 -14 1108  RT3D UA9YDR R+11
235545 -13  704  RT3D EB2EMZ IN83
235615 -15 1107  RT3D UA9YDR 73
224530  -6  376  RT3D VO1BE -17 (x4)
80m 
UTC    dB Audio  Message
212845  -9  817  CQ RT3D KO84                          a1 (x2)
213000  +1  817  RT3D OZ5AGJ JO47 (x4)
220645  +0  975  R8AIM/4 RT3D KO84
221415  +1 1360  PA5MB/QRP RT3D R-18
221445  -6 1180  <LZ73TRC> RT3D R-18 (x4)
230730  +0  957  Z61DX RT3D KO84
230745 +11  852  RT3D Z61DX -03 (x2)
20m 
UTC    dB Audio  Message
154230  +0  790  <...> RT3D R-06
154445  +5  790  RT3D F5MXH JN07 (x2)
154645 -18 1003  RT3D UA9UFG -05
154700  -9 1270  3B8GL RT3D KO84 (x6)
215730 +12  655  RT3D AA3B -04 (x3)
180400 -16  974  RT3D II7MGXX -02
180430 -18  974  RT3D RR73; IK7IMO <...> -16
10m 
UTC    dB Audio  Message
103400 -12 1028  RT3D RR73; PA2RO <...> -18

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

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee