RV3DTN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO94

Receiver-side FT8 activity involving RV3DTN, decoded by SO8OO in southeastern Poland. 153 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-30.

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 RV3DTN as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (56%), followed by 40 m (44%). Most decodes (90%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -6 dB.

Overview

153
Messages attributed
12
UTC dates decoded
24
Active 15-min windows
-6 dB
Estimated median S/N

Bands

40m · 67 20m · 86
First attributed message: 2026-06-06
Last attributed message: 2026-08-30 12:12 UTC

Observed FT8 message patterns

Attributed sample
153 messages
Active dates
12 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-12 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 50, strong (≥ -8 dB) 101.

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 RV3DTN 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 RV3DTN

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 · 86 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,273 km (approx.)
Last such locator decoded
2026-08-30 12:11 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 UTCBandRV3DTN S/NCounterpartCounterpart S/NMsgsCapture
08-30 12:12 20m +12 / - YU7DES - / +2 2 ✓ Closing fragment
08-30 12:09 20m +2 / - UB4HVA -18 / - 3 ✓ Closing observed
08-30 12:07 20m - / - F4AXK +5 / - 3 Partial capture
08-30 12:06 20m -1 / -9 DL3HRZ -2 / -8 4 ✓ Full exchange observed
08-30 12:02 20m - / -1 DK4FH +8 / - 2 Partial capture
08-30 12:00 20m -9 / -5 F8CKS +8 / - 4 ✓ Closing observed
08-30 11:58 20m -3 / - YU6TM +6 / - 4 ✓ Closing observed
08-30 11:55 20m -7 / -3 LA1SNA -4 / -10 6 ✓ Full exchange observed
08-29 13:57 20m - / - OK2CNI -10 / - 2 Partial capture
08-29 13:51 20m - / -15 SV5BYP -3 / - 3 ✓ Closing fragment
08-01 12:11 20m +5 / - RU6UR - / -1 2 ✓ Closing fragment
07-25 10:31 20m -12 / 0 IK4LZH +9 / - 7 ✓ Closing observed
07-18 16:03 40m - / - EW8HP -22 / - 2 Partial capture
07-18 15:52 20m -15 / -20 PD3LKN -11 / -16 5 ✓ Full exchange observed
07-18 15:51 20m - / -5 LZ1BT -8 / - 2 Partial capture
07-18 15:47 20m - / -4 OK1WCF +5 / - 3 ✓ Closing fragment
07-18 15:43 20m - / - 9A4DK 0 / - 2 Partial capture
07-18 15:42 20m - / -16 R2SN -12 / - 3 ✓ Closing fragment
07-18 15:41 20m - / -6 DL9KM -15 / - 4 ✓ Closing fragment
07-18 15:39 20m - / - DL1R -9 / - 6 Partial capture
07-04 12:33 20m - / -16 PE9JAN -10 / - 3 ✓ Closing fragment
06-27 12:04 20m - / - 9A4DK -10 / - 2 Partial capture
06-27 11:57 20m - / - DL1R -7 / - 4 Partial capture
06-26 18:17 40m -12 / +2 R3KHR -12 / - 3 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
120700  -4 2031  RV3DTN DL3HRZ 73
120730  +4 2508  RV3DTN F4AXK IN96 (x3)
120915  +0  734  CQ RV3DTN KO94
120930 -18 1714  RV3DTN UB4HVA LO53
120930  +3 1140  RV3DTN R6AAU R-10
121015  +2  733  UB4HVA RV3DTN RR73
121030 -17 1714  RV3DTN UB4HVA 73
121045  +7  734  CQ RV3DTN KO94 (x2)
121130 -16  927  RV3DTN G8IXM JO02
121145 +14  734  CQ RV3DTN KO94
121215 +14  734  YU7DES RV3DTN +02 (x2)
40m 
UTC    dB Audio  Message
175815 -12  616  CQ RV3DTN KO94 (x3)
181730 -15 1479  RV3DTN R3KHR +02
181745 -12  666  R3KHR RV3DTN R+12
181800  -8 1478  RV3DTN R3KHR RR73
160330 -21 1819  RV3DTN EW8HP KO42 (x2)
160600 -22 1860  RV3DTN UA6LIK 73

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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