RV3DMM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO84

Receiver-side FT8 activity involving RV3DMM, decoded by SO8OO in southeastern Poland. 53 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-10 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 53 FT8 messages attributed to RV3DMM as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (77%), followed by 10 m (17%) and 80 m (4%). Most decodes (96%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was -3 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

80m · 2 40m · 41 20m · 1 10m · 9

First attributed message: 2026-06-10
Last attributed message: 2026-09-20 14:22 UTC

Observed FT8 message patterns

Attributed sample: 53 messages
Active dates: 6 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -9 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 47.

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 RV3DMM in decoded directed-looking exchanges:

DL1HQN · Fed. Rep. of Germany A61DD · United Arab Emirates BI4IWL · China DJ0MAB · Fed. Rep. of Germany MI0OBC · Northern Ireland OM3PR · Slovak Republic ON4ASV · Belgium OZ9FF · Denmark R9FE · European Russia RA9SBN · Asiatic Russia RK4PR · European Russia RL2F · Kaliningrad

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 RV3DMM

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 · 24 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,150 km (approx.)
Last such locator decoded: 2026-09-20 14:21 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 UTC	Band	RV3DMM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 14:22	40m	-16 / -6	RK4PR	-10 / +1	3	✓ Full exchange observed
09-17 19:09	40m	- / -16	OZ9FF	+3 / -	2	✓ Closing fragment
09-15 19:58	40m	- / -	G0VUH	-6 / -	2	Partial capture
09-15 19:56	40m	- / -	TA4SSK	-8 / -	4	Partial capture
09-15 19:53	40m	-7 / -	UA4FKT	+6 / -	5	✓ Closing observed
09-15 19:52	40m	-8 / -	YO4LUP	- / -13	2	✓ Closing fragment
09-14 19:39	40m	-2 / -14	UB6OCP	-2 / -19	5	✓ Full exchange observed
09-14 19:36	40m	0 / -	ON1JP	- / -13	2	Partial capture
09-14 19:34	40m	- / -11	MI0OBC	-4 / -	2	✓ Closing fragment
09-14 19:32	40m	+3 / -10	DJ0MAB	+12 / -10	8	✓ Full exchange observed
09-14 19:32	40m	- / -	UB6OCP	-1 / -	3	Partial capture
09-14 19:31	40m	+2 / -	OM3PR	- / -3	2	✓ Closing fragment
09-14 19:29	40m	-1 / -11	ON4ASV	+24 / -1	6	✓ Full exchange observed
09-14 19:27	40m	+3 / -12	RN6MA	+12 / -4	3	✓ Full exchange observed
09-14 19:25	40m	- / -4	RW4HD	-4 / -	2	✓ Closing fragment
09-14 19:24	40m	+1 / -	DJ0MAB	+4 / -10	2	Partial capture
09-14 19:22	40m	-3 / -1	R9FE	-12 / -9	4	✓ Full exchange observed
09-14 19:22	40m	+1 / -	RA9SBN	- / -14	2	✓ Closing fragment
09-14 19:16	40m	+1 / -	BI4IWL	- / -19	3	✓ Closing fragment
07-26 07:38	20m	- / +1	DL1HQN	+4 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
195615  -9  288  RV3DMM TA4SSK KM57 (x4)
195800  -5  288  JA0LFV RV3DMM KO84
195815  -7 1233  RV3DMM G0VUH IO93 (x2)
190915  +1 2314  RV3DMM OZ9FF -16 (x2)
191215 -17  826  RV3DMM A61DD -12
191530  -7  826  A61DD RV3DMM RR73
142115  -8  738  CQ RV3DMM KO84                        a1
142200 -11  935  RV3DMM RK4PR -06
142245 -16  738  RK4PR RV3DMM R+01
142300 -10  936  RV3DMM RK4PR RR73

80m

UTC    dB Audio  Message
195930 -21 1998  ER5DX RV3DMM KO84
200130 -13  468  4L6EZ RV3DMM KO84

20m

UTC    dB Audio  Message
073845  +5  679  RV3DMM DL1HQN JO61 (x3)
074230  -6 1047  VK5WU RV3DMM KO84
074945 -15 1143  RV3DMM R6NW LN07

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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