RD3WW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO81

Receiver-side FT8 activity involving RD3WW, decoded by SO8OO in southeastern Poland. 111 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-15 and 2026-09-06.

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 111 FT8 messages attributed to RD3WW as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (52%), followed by 40 m (47%) and 10 m (1%). Several six-hour UTC windows tied for the largest share (53%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (97%); the estimated median was +9 dB.

Overview

111

Messages attributed

UTC dates decoded

Active 15-min windows

+9 dB

Estimated median S/N

Bands

40m · 52 20m · 58 10m · 1

First attributed message: 2026-07-15
Last attributed message: 2026-09-06 15:17 UTC

Observed FT8 message patterns

Attributed sample: 111 messages
Active dates: 4 UTC dates
Estimated median S/N: +9 dB
Estimated 10th-90th percentile: 0 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 108.

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 RD3WW in decoded directed-looking exchanges:

DC7DOC · Fed. Rep. of Germany DK3HV · Fed. Rep. of Germany EW3DK · Belarus F4LNM · France HC5F · Ecuador K7NN · United States OH6FSO · Finland R7KM · European Russia R9UBE · Asiatic Russia RI0SP · European Russia S59A · Slovenia SV1GYN · Greece

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 RD3WW

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: KO81 · 25 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,083 km (approx.)
Last such locator decoded: 2026-09-06 15:17 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	RD3WW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 15:16	40m	+10 / -	EW6PG	-15 / +4	4	✓ Full exchange observed
09-06 15:07	40m	+12 / -	UN7GDB	- / -3	2	✓ Closing fragment
09-06 15:06	40m	+10 / -3	DL7ACA	+3 / -2	5	✓ Full exchange observed
09-06 15:01	40m	+11 / -	UB8SIV	- / -20	5	✓ Closing fragment
09-06 15:01	40m	+12 / +8	RA1TR	-5 / +7	6	✓ Full exchange observed
09-06 15:00	40m	+12 / -	UN7DCS	- / -7	3	✓ Closing fragment
09-06 14:59	40m	+12 / -	RO2T	- / +6	2	✓ Closing fragment
09-06 14:58	40m	+9 / +7	RK6MC	-6 / -	5	✓ Full exchange observed
09-06 14:56	40m	+12 / -	BG0FQU	- / -23	3	✓ Closing fragment
09-06 14:55	40m	+10 / -	RL3QGD	+2 / +8	5	✓ Full exchange observed
09-06 14:53	40m	+10 / -	R7DX	- / -	2	✓ Closing fragment
09-06 14:51	40m	+10 / -	RA9HBQ	- / -8	2	✓ Closing fragment
09-06 14:50	40m	+10 / -	R0AF	- / -17	3	✓ Closing fragment
09-06 14:49	40m	+10 / -	UB4HVA	-15 / -3	3	✓ Closing observed
09-06 14:49	40m	- / -	OE8PIT	-3 / -	3	Partial capture
09-06 14:47	40m	+9 / -	R4PEP	- / -1	2	✓ Closing fragment
07-24 08:01	20m	-4 / -7	DK3HV	+1 / -10	5	✓ Full exchange observed
07-15 05:37	20m	-2 / -	S59A	- / -	2	✓ Closing fragment
07-15 05:36	20m	+11 / -	DJ7XY	- / -3	2	Partial capture
07-15 05:35	20m	+10 / -	YO9PH	- / -	2	✓ Closing fragment
07-15 05:32	20m	+4 / -	HI3ABC	- / -7	3	Partial capture
07-15 05:31	20m	0 / -	HK4OK	- / -20	3	Partial capture
07-15 05:28	20m	+6 / -	OH6FSO	- / -17	2	✓ Closing fragment
07-15 05:13	20m	+6 / -	R7KM	- / -4	2	✓ Closing fragment
07-15 05:09	20m	+6 / -	RI0SP	- / -19	4	✓ Closing fragment
07-15 05:08	20m	+8 / -	DC7DOC	- / +4	2	✓ Closing fragment
07-15 05:06	20m	+6 / -	K7NN	- / 0	4	✓ Closing fragment
07-15 05:02	20m	+9 / -	K7NN	- / -5	2	Partial capture
07-15 05:00	20m	+12 / -	K4OVY	- / -16	2	Partial capture
07-15 04:58	20m	+13 / -	IK1AQI	- / -17	2	Partial capture
07-15 04:56	20m	+12 / -	EW4DX	- / +2	2	Partial capture
07-15 04:53	20m	+4 / -	R9UBE	- / -8	2	✓ Closing fragment
07-15 04:52	20m	-4 / -	F4LNM	- / -8	2	✓ Closing fragment
07-15 04:43	20m	- / -16	TA3ZGR	-8 / -	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
150715 +12  560  UN7GDB RD3WW -03 (x2)
150815 +11  560  CQ RD3WW KO81 (x4)
151100  +9  559  PE1OPL/P RD3WW +21
151130 +11  560  LA5LDX/P RD3WW +21
151430 +11  559  PE1OPL/P RD3WW +15
151445 -10 1764  RD3WW R1943OD R+20
151630 +10  560  EW6PG RD3WW +04
151645 -17 1439  RD3WW EW6PG R+20
151700  +9  560  EW6PG RD3WW RR73
151715 -13 1440  RD3WW EW6PG 73
151730  +9  560  CQ RD3WW KO81

20m

UTC    dB Audio  Message
053315  +5  691  HI3ABC RD3WW -07 (x2)
053545  +8  691  YO9PH RD3WW R+12 (x2)
053630 -16  975  RD3WW R6DZR KN84
053645 +11  691  DJ7XY RD3WW -03 (x2)
053745  +5  691  S59A RD3WW R+22 (x2)
080045  -9  849  CQ RD3WW KO81
080100  +0  848  RD3WW DK3HV JO31
080115  -4  849  DK3HV RD3WW -10
080130  -2  849  RD3WW DK3HV R-07
080145  -4  849  DK3HV RD3WW RR73
080200  +4  849  RD3WW DK3HV 73

10m

UTC    dB Audio  Message
064300 -11 2533  RD3WW RD7LC -16
063815 -11  594  CQ RD3WW KO81
063900  -3  594  RD3WW RA6AR KN93

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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