RD4CC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO31

Receiver-side FT8 activity involving RD4CC, decoded by SO8OO in southeastern Poland. 362 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-09-13.

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 362 FT8 messages attributed to RD4CC as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (80%), followed by 40 m (10%) and 80 m (6%). Most decodes (59%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was 0 dB.

Overview

362
Messages attributed
22
UTC dates decoded
75
Active 15-min windows
0 dB
Estimated median S/N

Bands

80m · 20 40m · 38 20m · 288 10m · 16
First attributed message: 2026-06-13
Last attributed message: 2026-09-13 22:35 UTC

Observed FT8 message patterns

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

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 35, moderate (-15 to -9 dB) 51, strong (≥ -8 dB) 276.

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 RD4CC 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 RD4CC

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
LO31 · 207 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,774 km (approx.)
Last such locator decoded
2026-09-13 22:32 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 UTCBandRD4CC S/NCounterpartCounterpart S/NMsgsCapture
09-13 22:35 40m -9 / - SP6AXW - / -20 2 ✓ Closing fragment
09-13 22:31 40m -5 / - RX7O - / -18 5 ✓ Closing fragment
09-13 21:51 40m +12 / - DU3LA - / -3 4 ✓ Closing fragment
09-09 22:21 40m +7 / - XV9B - / -6 9 ✓ Closing fragment
09-09 22:13 40m +4 / - BD7OH - / -14 3 ✓ Closing fragment
09-09 22:11 40m +7 / -2 7Z1BQ -13 / -13 5 ✓ Full exchange observed
09-09 22:04 40m -6 / - HG8LXL - / -16 2 ✓ Closing fragment
09-09 22:03 40m -3 / -8 PD0LBY -6 / -18 11 ✓ Full exchange observed
09-09 22:01 40m 0 / -9 JY5IB -18 / - 3 ✓ Closing observed
09-09 18:05 80m +4 / -10 EW8CW +4 / - 4 ✓ Closing observed
09-09 18:02 80m +1 / -9 RX3DRC -12 / - 3 ✓ Closing observed
09-09 18:02 80m - / - RC6BB -12 / - 3 Partial capture
09-09 18:01 80m -4 / -11 R2DRE -2 / -5 4 ✓ Full exchange observed
09-09 17:59 80m - / - R5BM -6 / - 2 ✓ Closing fragment
09-09 17:57 80m - / - F5RRS -12 / - 4 Partial capture
09-09 17:57 80m -2 / +1 RA3RDN -6 / - 7 ✓ Full exchange observed
09-09 17:57 80m - / - RC2Y -4 / - 3 Partial capture
09-09 17:49 80m - / - OK1FRG +6 / - 5 Partial capture
09-09 17:48 80m +2 / -9 SV2AEL +1 / -14 5 ✓ Full exchange observed
09-09 17:48 80m +5 / +2 RK3YWA -6 / -8 9 ✓ Full exchange observed
09-07 18:07 80m - / - UA4FKT +1 / - 3 Partial capture
09-07 18:06 80m -10 / +3 RU4SS -6 / - 2 Partial capture
09-07 18:04 80m - / - RD3AD -12 / - 2 Partial capture
09-07 18:03 80m +4 / - RA4P - / +3 2 ✓ Closing fragment
09-07 18:03 80m - / - RM5F -4 / - 2 Partial capture
09-07 17:59 80m +3 / +2 R1943OD +18 / - 5 Partial capture
09-02 22:40 40m - / - OS4K -12 / - 3 Partial capture
09-02 22:37 40m -3 / - RI1FJL - / -15 5 Partial capture
08-31 19:11 20m +18 / - OK2BRV - / -11 2 ✓ Closing fragment
08-31 19:07 20m +12 / - EA8UP +10 / -4 6 ✓ Full exchange observed
08-30 17:44 20m +2 / - EP2AES - / - 6 Partial capture
08-30 17:40 20m +8 / - EP2AES - / - 2 Partial capture
08-30 17:16 20m +5 / - VJ6X - / - 3 Partial capture
08-25 22:52 20m -17 / - HK3AB - / - 3 Partial capture
08-25 22:45 20m -17 / - 9Y4DG - / - 3 Partial capture
08-25 22:37 20m -12 / - PP2CS - / - 2 Partial capture
08-25 22:28 20m -13 / - M1WLK - / -9 3 Partial capture
08-25 22:24 20m - / +5 K1SM +4 / - 2 ✓ Closing fragment
08-25 22:20 20m -10 / -8 LU1FIV -3 / - 5 ✓ Closing observed
08-22 17:13 20m -13 / -7 UA3GJM -6 / -17 3 ✓ Full exchange observed
08-11 16:52 20m -14 / - UA3POG - / -9 2 Partial capture
08-11 15:45 20m -1 / - 7X2KF - / -9 3 ✓ Closing fragment
08-11 11:11 20m -10 / - JA7QOA - / - 2 Partial capture
07-31 17:37 20m -16 / - JT1BZ - / - 2 ✓ Closing fragment
07-31 17:21 20m +10 / 0 4U1GSC -4 / -7 8 Partial capture
07-29 16:41 20m -5 / - DS1VAA - / -22 5 Partial capture
07-29 16:40 20m -4 / - RK0SC - / - 2 ✓ Closing fragment
07-29 16:33 20m -8 / - VK2JJM - / -10 2 Partial capture
07-29 16:27 20m -1 / - BG5BNW - / -11 5 ✓ Closing fragment
07-29 16:21 20m +3 / - BV2NF - / +2 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
222345  +6  477  XV9B RD4CC R-06 (x4)
215145 +11  521  DU3LA RD4CC LO31 (x4)
223145  +0  969  RX7O RD4CC LO31 (x5)
223515  -8 2294  SP6AXW RD4CC -20 (x2)
80m 
UTC    dB Audio  Message
180200  -4 1884  R2DRE RD4CC R-05
180215  -7 1165  RD4CC RC6BB KN84
180215  +2 1885  RD4CC R2DRE RR73
180230  -5 1884  R2DRE RD4CC 73
180245 -10 1603  RD4CC RX3DRC R-09
180245 -13 1165  RD4CC RC6BB KN84
180245 -14  931  RD4CC R6SBN KN86
180300  +1 1603  RX3DRC RD4CC RR73
180315 -14 1603  RD4CC RX3DRC 73
180315 -16 1166  RD4CC RC6BB KN84
180315  -6 1233  RD4CC R2GBR -03
180545  +7  828  RD4CC EW8CW R-10 (x2)
180800  +4 2275  EW8CW RD4CC RR73
180815  +8 2279  RD4CC EW8CW 73
20m 
UTC    dB Audio  Message
174115  +8 2105  EP2AES RD4CC LO31 (x7)
190745 +17 1174  EA8UP RD4CC LO31 (x2)
190830  +8 1176  RD4CC EA8UP +13
190845  +4 1175  EA8UP RD4CC R-04
190900 +11 1176  RD4CC EA8UP RR73
190915 +10 1176  EA8UP RD4CC 73
191115 +18 1505  OK2BRV RD4CC R-11 (x2)
10m 
UTC    dB Audio  Message
161600 -20 1842  LU7WDM RD4CC R-10 (x2)
161800  -5  598  PY1CW RD4CC LO31 (x2)
165115 -23 1853  CE4KM RD4CC LO31 (x3)
165330 -20 1521  PY1EY RD4CC LO31 (x2)
165630 -20 2206  PY1CW RD4CC LO31
165800 -22 1583  CX7RH RD4CC LO31 (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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