RV3DCM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO86

Receiver-side FT8 activity involving RV3DCM, decoded by SO8OO in southeastern Poland. 350 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 30 UTC dates in the available aggregate history. Observed between 2026-06-11 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 350 FT8 messages attributed to RV3DCM as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (63%), followed by 20 m (21%) and 40 m (16%). Most decodes (51%) 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 -15 dB.

Overview

350

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

40m · 56 20m · 73 10m · 221

First attributed message: 2026-06-11
Last attributed message: 2026-09-13 17:21 UTC

Observed FT8 message patterns

Attributed sample: 350 messages
Active dates: 30 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -23 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 168, moderate (-15 to -9 dB) 119, strong (≥ -8 dB) 63.

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 RV3DCM in decoded directed-looking exchanges:

II6WWA · Italy ×2 LZ2RR · Bulgaria ×2 RD7P · European Russia ×2 TM8WWA · France ×2 7Q3WS · Malawi A41ZZ · Oman CR7BRV · Portugal CX6TU · Uruguay DG0NE · Fed. Rep. of Germany DH8BQA · Fed. Rep. of Germany DO3BZ · Fed. Rep. of Germany DO3VS · Fed. Rep. of Germany

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 RV3DCM

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: KO86 · 175 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,244 km (approx.)
Last such locator decoded: 2026-09-13 17:07 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	RV3DCM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 17:10	40m	-12 / -7	RZ0SW	-19 / -20	3	✓ Full exchange observed
09-13 17:07	40m	-15 / -	RA1AGA	- / -6	3	✓ Closing fragment
09-13 17:04	40m	-12 / -13	RA4ADF	-15 / -	3	✓ Closing observed
08-18 14:01	10m	- / +2	OZ1BNN	-19 / -	2	✓ Closing fragment
08-17 19:40	10m	-14 / -	LU2EI	- / -	2	Partial capture
08-17 19:38	10m	-20 / -	PY2KQ	- / -	2	Partial capture
08-17 19:34	10m	-21 / -	PY2KQ	- / -	3	Partial capture
08-17 19:33	10m	-14 / -	PU1KPS	- / -18	2	✓ Closing fragment
08-17 19:29	10m	-21 / -	PU2UTY	- / -10	3	✓ Closing fragment
08-17 19:25	10m	-22 / -	YT1JN	- / -16	4	✓ Closing fragment
08-17 15:50	10m	-23 / -	PP7AL	- / -	2	Partial capture
08-17 07:23	10m	- / -17	UD6F	-18 / -	2	✓ Closing fragment
08-12 19:51	10m	- / -13	PH2M	-7 / -	4	✓ Closing fragment
08-12 19:40	10m	- / -5	DO7TTR/P	-14 / -	2	✓ Closing fragment
08-12 19:39	10m	- / 0	ON1JP	-12 / -	2	Partial capture
08-11 18:09	10m	-24 / -	HA3GX	- / -18	3	✓ Closing fragment
08-11 17:23	10m	-22 / -	YU1WT	- / -6	2	✓ Closing fragment
08-09 06:19	20m	- / -	IU5TPM	-10 / -	2	Partial capture
08-07 16:03	20m	- / -19	UD7G	-17 / -	3	Partial capture
08-07 06:37	20m	-11 / -	N8HRZ	- / -20	4	✓ Closing fragment
08-07 06:33	20m	-9 / -11	P40AA	-7 / -25	5	Partial capture
07-28 00:26	20m	- / -14	W3FOX	0 / -	7	Partial capture
07-28 00:25	20m	- / -12	V31MA	-10 / -	4	✓ Closing fragment
07-28 00:13	20m	- / 0	WI1U	-11 / -	4	✓ Closing fragment
07-27 16:28	20m	- / -14	EA5HEU	-4 / -	3	✓ Closing fragment
07-23 23:17	40m	- / -11	IQ4JO	+2 / -	2	✓ Closing fragment
07-23 20:12	10m	- / -11	PY7XC	-10 / -	2	✓ Closing fragment
07-23 15:28	10m	-12 / -	UN9LBC	- / -	2	Partial capture
07-23 14:31	10m	-14 / -	RA9N	- / -19	2	✓ Closing fragment
07-23 14:26	10m	-16 / -	KB2PIW	- / -15	3	✓ Closing fragment
07-23 13:53	10m	-21 / -	RA6YDX	- / +3	3	✓ Closing fragment
07-22 07:46	10m	-20 / -	EC7R	- / -5	2	✓ Closing fragment
07-22 07:41	10m	-20 / -	EA4FKJ	- / -15	4	✓ Closing fragment
07-21 20:41	40m	-18 / -	R1IAO	- / -26	6	Partial capture
07-21 20:36	40m	-14 / -1	UA3IAP	-4 / -10	10	✓ Full exchange observed
07-21 20:34	40m	-14 / -	TF4M	- / -13	2	Partial capture
07-21 14:31	10m	-17 / -	CN2DX	- / -	2	Partial capture
07-21 06:36	10m	- / -	UA6CEY	-10 / -	2	✓ Closing fragment
07-20 11:19	10m	-14 / -	R8AHM	- / -	2	Partial capture
07-20 11:17	10m	-15 / -	RT3K	- / -	2	Partial capture
07-20 11:16	10m	-14 / -	RA0SCA	- / -13	3	✓ Closing fragment
07-18 19:30	10m	- / -6	RL3K	-12 / -	3	✓ Closing fragment
07-18 19:27	10m	-15 / -	RN3ZBX	-12 / -	2	✓ Closing observed
07-18 19:23	10m	- / -	F1TRF	-8 / -	2	Partial capture
07-18 16:34	10m	-13 / -	DG0OFT	- / -26	2	Partial capture
07-18 09:42	10m	-16 / -	R1AV	- / -19	2	✓ Closing fragment
07-18 09:40	10m	- / -	DF4TC	-9 / -	3	Partial capture
07-18 08:12	10m	-24 / +2	R6DOB	-11 / -11	5	✓ Full exchange observed
07-18 08:03	10m	-22 / -	UA4NX	- / -9	3	✓ Closing fragment
07-18 08:02	10m	-21 / -7	RD7LC	-4 / -	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
205530 -24 1320  UA6LZ RV3DCM RR73
231715  +4 2606  RV3DCM IQ4JO -11 (x2)
184815 -21 2077  <...> RV3DCM KO86
170445 -15 2295  RV3DCM RA4ADF -13 (x2)
170600 -12 2295  RA4ADF RV3DCM 73
170745 -12 1193  RA1AGA RV3DCM KO86 (x3)
171000 -19 1376  RV3DCM RZ0SW -07
171015 -14 1376  RZ0SW RV3DCM R-20 (x2)
171600 -12 1278  RV3DCM UB3FBD KO85
172100 -10 1243  UB1CDJ RV3DCM 73

10m

UTC    dB Audio  Message
192915 -20 1428  PU2UTY RV3DCM KO86 (x3)
193315 -13 2345  PU1KPS RV3DCM R-18 (x2)
193415 -22 1386  PY2KQ RV3DCM KO86 (x5)
194045 -14 1025  LU2EI RV3DCM KO86 (x2)
135045  -4 2266  RV3DCM OZ/KD0NDU +01
140100 -21 1639  RV3DCM OZ1BNN +02 (x2)

20m

UTC    dB Audio  Message
063445 -10 1510  P40AA RV3DCM R-11
063615 -13 1721  YT1VDA RV3DCM KO86
063715 -12 1165  RA6FSV RV3DCM RR73
063745 -12 1027  N8HRZ RV3DCM KO86 (x4)
064145  -9  634  LY1CX RV3DCM KO86
064215 -13 1139  RW0IM RV3DCM KO86
160300 -20 1982  RV3DCM UD7G -19 (x3)
061900 -11  902  RV3DCM IU5TPM JN53 (x2)
073545 -24 1619  RV3DCM R3DHP 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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