RA3VMK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO95

Receiver-side FT8 activity involving RA3VMK, decoded by SO8OO in southeastern Poland. 748 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-06-28.

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 748 FT8 messages attributed to RA3VMK as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (42%), followed by 20 m (28%) and 80 m (19%). Most decodes (58%) fell within the six-hour window 06:00-12:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

748

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 140 40m · 83 20m · 209 10m · 316

First attributed message: 2026-06-08
Last attributed message: 2026-06-28 18:51 UTC

Observed FT8 message patterns

Attributed sample: 748 messages
Active dates: 8 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -18 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 153, moderate (-15 to -9 dB) 339, strong (≥ -8 dB) 256.

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 RA3VMK in decoded directed-looking exchanges:

DM2DZM · Fed. Rep. of Germany ×2 LZ2SJ · Bulgaria ×2 E70SZ · Bosnia-Herzegovina IW4DNI · Italy R3KLJ · European Russia R6DOP · European Russia R6FFB · European Russia R6JY · European Russia R6LE · European Russia R6LNH · European Russia R6OD · European Russia R6OY · European Russia

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 RA3VMK

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: KO95 · 574 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,309 km (approx.)
Last such locator decoded: 2026-06-28 18:51 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	RA3VMK S/N	Counterpart	Counterpart S/N	Msgs	Capture
06-28 18:12	40m	- / -6	UB6LDM	-17 / -	3	✓ Closing fragment
06-28 18:05	40m	- / -1	EW2MS	-16 / -	5	✓ Closing fragment
06-28 17:57	40m	- / -7	DB4KBR	-20 / -	2	✓ Closing fragment
06-28 17:46	40m	- / -	9A4DK	-15 / -	2	Partial capture
06-28 17:40	10m	-20 / -3	R1BGR	-14 / -	2	Partial capture
06-28 17:27	10m	- / -6	R6OD	-1 / -	3	✓ Closing fragment
06-22 19:27	40m	-17 / -16	S51UN	-13 / -3	3	Partial capture
06-22 19:23	40m	-14 / -4	YU9MBA	-9 / -	3	✓ Closing observed
06-22 18:58	40m	- / -8	OK3NKO/P	-8 / -	2	✓ Closing fragment
06-22 18:49	80m	- / -	LZ2SJ	-4 / -	3	✓ Closing fragment
06-22 18:46	80m	-16 / -12	LZ2SJ	-5 / -5	4	✓ Full exchange observed
06-22 06:44	20m	- / -	R4AGO	-14 / -	2	Partial capture
06-21 16:16	10m	-24 / -16	IW4DNI	+2 / -	3	✓ Closing observed
06-21 13:24	20m	- / +1	RG4D/P	-10 / -	2	✓ Closing fragment
06-21 12:52	20m	- / -	R6AO	-16 / -	2	Partial capture
06-21 12:35	20m	- / -17	DK1VS	-14 / -	2	Partial capture
06-21 10:59	10m	- / -20	R7NO	-16 / -	2	Partial capture
06-21 09:56	10m	- / -9	RT6Z	+4 / -	3	✓ Closing fragment
06-21 09:32	10m	- / +3	R6LE	-14 / -	3	✓ Closing fragment
06-21 09:11	10m	- / -	R3KLJ	-17 / -	2	✓ Closing fragment
06-21 09:03	10m	- / 0	RA6ZA	-5 / -	3	✓ Closing fragment
06-21 09:02	10m	- / -15	RL3K	-18 / -	2	✓ Closing fragment
06-21 08:58	10m	- / -	RK4FD	-12 / -	2	Partial capture
06-21 06:56	20m	-13 / -	PH7GD	- / -11	3	Partial capture
06-21 06:33	20m	-16 / -	RD4AAK	- / +3	2	✓ Closing fragment
06-21 06:22	20m	- / -11	RU4HU	-18 / -	4	✓ Closing fragment
06-21 06:20	20m	- / +10	RZ4FWA	-14 / -	2	✓ Closing fragment
06-21 06:16	20m	- / +2	RK4UZ	-12 / -	2	Partial capture
06-21 06:10	20m	- / -16	OD5KU	+3 / -	3	✓ Closing fragment
06-20 19:45	40m	- / -	F4HEA	-4 / -	4	Partial capture
06-20 19:43	40m	- / -12	R2FBW	-21 / -	2	✓ Closing fragment
06-20 19:40	80m	-9 / -	VU2ADV	- / -	2	Partial capture
06-20 19:39	80m	-7 / -2	<...>	-3 / +5	2	Partial capture
06-20 19:35	80m	-10 / -	RU3DBT	- / -13	6	✓ Closing fragment
06-20 19:32	80m	- / -2	R5ZQ	+6 / -	2	✓ Closing fragment
06-20 19:30	80m	-7 / -11	RA6WF	-11 / -10	5	✓ Full exchange observed
06-20 19:26	80m	-4 / -10	OK2WMC	+12 / -5	5	✓ Full exchange observed
06-20 19:22	80m	-1 / -7	RA3ZOM	+14 / +9	5	✓ Full exchange observed
06-20 19:21	80m	-3 / -	RA4ADF	- / -10	2	Partial capture
06-20 19:20	80m	-13 / -	RA3VLZ	- / -	2	✓ Closing fragment
06-20 19:16	80m	-4 / -	RK9DO	-15 / -1	3	✓ Closing observed
06-20 19:07	40m	- / -12	DM2DZM	-8 / -	3	✓ Closing fragment
06-20 19:04	40m	- / -	DF9MV	-21 / -	3	✓ Closing fragment
06-20 18:59	40m	- / -13	RA9UES	-18 / -	2	✓ Closing fragment
06-20 18:49	80m	-4 / -	RA6FCU/P	- / -6	2	✓ Closing fragment
06-20 18:46	40m	- / -7	HA3IC	+1 / -	4	✓ Closing fragment
06-20 18:26	40m	- / -20	DM2DZM	0 / -	4	✓ Closing fragment
06-20 17:06	40m	- / +2	DL8UVG	-13 / -	3	✓ Closing fragment
06-20 17:04	40m	- / -	DF1WR	-14 / -	2	✓ Closing fragment
06-20 15:27	10m	-17 / -13	S51UN	-4 / -18	20	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
095700  +6 2775  RA3VMK RT6Z R-09 (x2)
105930 -15 1455  RA3VMK R7NO -20 (x2)
112230 -10 2393  RA3VMK R7KGB -11
161630  +2  897  RA3VMK IW4DNI -16 (x2)
161715 -24 1175  IW4DNI RA3VMK 73
171045 -20 1526  RA3VMK R6LNH 73
172745  -3 2226  RA3VMK R6OD KN87 (x3)
174045 -14 1171  RA3VMK R1BGR -03
174100 -20 1527  R1BGR RA3VMK R+13
185545 -13  278  RA3VMK RJ6ON -03

80m

UTC    dB Audio  Message
184630 -21  915  LZ2SJ RA3VMK -05
184645  -5 1858  RA3VMK LZ2SJ R-12
184700 -12  916  LZ2SJ RA3VMK RR73
184730 -13  915  CQ RA3VMK KO95 (x3)
184915  -2 1858  RA3VMK LZ2SJ 73 (x3)
190030  -5  918  CQ RA3VMK KO95 (x6)

40m

UTC    dB Audio  Message
192730 -17 1081  S51UN RA3VMK -03
192745 -14 1080  RA3VMK S51UN R-16
174615 -14 1043  RA3VMK 9A4DK JN85 (x2)
175745 -20 1471  RA3VMK DB4KBR R-07 (x2)
180515 -14 2096  RA3VMK EW2MS KO34 (x5)
181215 -16 1470  RA3VMK UB6LDM KN97 (x3)
182715 -10 2699  RA3VMK UA3RFT R-05

20m

UTC    dB Audio  Message
064645 -14 1018  CQ RA3VMK KO95
065615 -15 1018  PH7GD RA3VMK -11 (x3)
070045 -14 1017  CQ RA3VMK KO95 (x2)
122145 -18 1084  RA3VMK DG5PW 73
123545 -14 1081  RA3VMK DK1VS JN49 (x2)
125245 -18 1457  RA3VMK R6AO KN95 (x2)
132445  -9 2555  RA3VMK RG4D/P +01 (x2)
064445 -17 1996  RA3VMK R4AGO LO20 (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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