RC9OC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: NO14

Receiver-side FT8 activity involving RC9OC, decoded by SO8OO in southeastern Poland. 153 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 17 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-09-20.

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 153 FT8 messages attributed to RC9OC as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (55%), followed by 40 m (41%) and 20 m (5%). Several six-hour UTC windows tied for the largest share (92%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

153
Messages attributed
17
UTC dates decoded
33
Active 15-min windows
-15 dB
Estimated median S/N

Bands

80m · 84 40m · 62 20m · 7
First attributed message: 2026-08-25
Last attributed message: 2026-09-20 00:28 UTC

Observed FT8 message patterns

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

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 67, moderate (-15 to -9 dB) 73, strong (≥ -8 dB) 13.

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 RC9OC 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 RC9OC

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
NO14 · 81 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
4,067 km (approx.)
Last such locator decoded
2026-09-16 00:29 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 UTCBandRC9OC S/NCounterpartCounterpart S/NMsgsCapture
09-20 01:02 40m - / -13 TA4SSK -8 / - 4 ✓ Closing fragment
09-20 00:33 80m - / -8 R5BM +6 / - 6 ✓ Closing fragment
09-20 00:33 80m - / -19 RA6OY +2 / - 3 ✓ Closing fragment
09-20 00:28 80m -11 / -10 RX3ASQ +2 / -10 4 ✓ Full exchange observed
09-19 01:01 80m - / -13 RA9FUE -12 / - 5 ✓ Closing fragment
09-19 00:21 80m - / -15 R5DT +14 / - 3 Partial capture
09-18 17:11 80m - / -17 RY3D +4 / - 3 ✓ Closing fragment
09-17 23:35 80m - / -2 RV9CX +3 / - 3 ✓ Closing fragment
09-17 23:35 80m - / - OZ1HPS 0 / - 2 Partial capture
09-17 23:34 80m - / -20 ON3MOH -6 / - 2 Partial capture
09-17 23:29 80m - / -13 EW8CW +7 / - 2 ✓ Closing fragment
09-16 14:48 40m - / -6 RA4CGX -4 / - 4 ✓ Closing fragment
09-16 01:45 40m - / -2 RV9CX -10 / - 2 ✓ Closing fragment
09-16 01:15 40m - / -1 UA9LT -11 / - 2 ✓ Closing fragment
09-15 01:27 40m -11 / - YL2GC -14 / -2 2 ✓ Closing observed
09-15 01:17 40m - / -4 RA6LTD 0 / - 2 ✓ Closing fragment
09-13 23:34 40m -12 / - SV1EAG - / - 2 Partial capture
09-13 23:32 40m - / - DJ0MAB -10 / - 2 Partial capture
09-13 23:19 80m -23 / -16 RX6LG -16 / -17 3 ✓ Full exchange observed
09-13 23:16 80m - / - DO9BAU +1 / - 13 Partial capture
09-13 23:15 80m -14 / - R4FDD - / -16 2 ✓ Closing fragment
09-13 23:15 80m - / -16 F1PBZ +3 / - 6 Partial capture
09-13 23:13 80m -13 / - RD9U - / +2 2 ✓ Closing fragment
09-13 23:11 80m - / -24 SV2AEL +10 / - 3 ✓ Closing fragment
09-11 23:51 40m - / - CT2HEX -8 / - 6 Partial capture
09-11 23:44 80m - / - EA1IOK -18 / - 2 Partial capture
09-11 23:40 80m - / -18 SP5EXA +9 / - 5 Partial capture
09-11 01:36 40m - / - RA6ABO -4 / - 2 Partial capture
09-11 01:32 40m - / -19 RZ6L +2 / - 4 ✓ Closing fragment
09-11 01:31 40m - / - EA3HMM +1 / - 4 Partial capture
09-11 01:25 40m - / -13 RA6FRI +3 / - 3 ✓ Closing fragment
09-11 01:23 40m - / - HA7TM -10 / - 2 Partial capture
09-11 00:45 40m - / -6 5B4AMH -2 / - 2 ✓ Closing fragment
09-11 00:30 40m - / -12 RO6G -17 / - 2 Partial capture
09-11 00:04 80m - / -20 R5DT +16 / - 3 ✓ Closing fragment
09-10 23:54 80m -21 / -14 R6ZEJ +8 / - 5 ✓ Closing observed
09-10 23:51 80m -24 / -12 PI4DX +2 / -15 3 ✓ Full exchange observed
09-10 23:43 80m - / - LB0TH -9 / - 5 Partial capture
09-10 23:40 80m - / -11 RW1AI -16 / - 3 ✓ Closing fragment
09-10 23:38 80m -13 / +8 R9OAE -8 / +2 5 ✓ Full exchange observed
09-10 23:37 80m - / - R3EDI -6 / - 2 Partial capture
09-10 23:37 80m - / - RA3ALC -15 / - 3 Partial capture
09-10 23:36 80m -10 / -15 RN6HK +1 / - 4 ✓ Closing observed
09-10 23:33 80m -14 / -18 GI4SNA 0 / -16 6 ✓ Full exchange observed
09-10 23:33 80m -14 / -11 SP1NL +13 / -15 5 ✓ Full exchange observed
09-10 23:33 80m - / - IZ2AMW -8 / - 5 Partial capture
09-10 23:33 80m - / - LB0TH -10 / - 5 Partial capture
09-10 00:11 80m -16 / - SQ100PKP - / -12 2 Partial capture
09-10 00:09 80m -12 / -13 UA6FM 0 / -6 3 ✓ Full exchange observed
09-09 00:12 40m - / - MI7XHT -14 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
014500  -8 2354  RC9OC RV9CX -02 (x2)
133115  -7 2207  RC9OC R3WDW/P -18
144715  +2 2534  RC9OC RZ6AOJ KN96
144845  -6 2534  RC9OC RA4CGX LO21 (x3)
145015  +1 2677  RC9OC RK4UZ LO24
145015  -3 2534  RC9OC RA4CGX 73
004145 -23 2064  UA9OTW RC9OC R-21
004830  -3 1578  RC9OC IZ8DBJ JN70
010230  -6  547  RC9OC TA4SSK KM57 (x4)
80m 
UTC    dB Audio  Message
010345 -14 1477  RC9OC RA9FUE R-13 (x2)
002800  +1 1129  RC9OC RX3ASQ KO95
002815 -11 2553  RX3ASQ RC9OC -10
002830  +0 1129  RC9OC RX3ASQ R-10 (x2)
003330  +0  215  RC9OC RA6OY KN88
003330  +4 2526  RC9OC R5BM KO85
003400  +2  215  RC9OC RA6OY R-19
003400  +7 2526  RC9OC R5BM KO85
003430  +4  215  RC9OC RA6OY 73
003430  +8 2526  RC9OC R5BM KO85 (x4)
10m 
UTC    dB Audio  Message
084130 -11 2301  RC9OC SV2AEL KN10 (x4)
20m 
UTC    dB Audio  Message
141845 -19 1232  RC9OC RA6FSV LN05 (x3)
142045 +10 2791  RC9OC UA6B KN96
033530 -23 1581  RC9OC RZ6CO -14
025145  +5 2528  RC9OC SV5BYP KM46 (x3)
044800 -10 2570  LX7I RC9OC NO14 (x4)
045030 -13 2574  UA0QNE RC9OC +01 (x2)
045145  +9 2575  RC9OC RZ4AZ LN28

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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