R4NBV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO56

Receiver-side FT8 activity involving R4NBV, decoded by SO8OO in southeastern Poland. 747 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 17 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-14.

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 747 FT8 messages attributed to R4NBV as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (72%), followed by 40 m (17%) and 160 m (11%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8.2 dB.

Overview

747

Messages attributed

UTC dates decoded

100

Active 15-min windows

-8.2 dB

Estimated median S/N

Bands

160m · 83 80m · 537 40m · 126 20m · 1

First attributed message: 2026-06-11
Last attributed message: 2026-08-14 21:25 UTC

Observed FT8 message patterns

Attributed sample: 747 messages
Active dates: 17 UTC dates
Estimated median S/N: -8.2 dB
Estimated 10th-90th percentile: -15 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 58, moderate (-15 to -9 dB) 311, strong (≥ -8 dB) 378.

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 R4NBV in decoded directed-looking exchanges:

EA8UP · Canary Islands ×2 RA3LCI · European Russia ×2 UA1AEL · European Russia ×2 UB1Q · European Russia ×2 PA2WCB · Netherlands ×2 R2FEA · Kaliningrad ×2 R2LAF/P · European Russia ×2 RA3M · European Russia ×2 RK6MC · European Russia ×2 RZ2H · European Russia ×2 R3BDQ · European Russia ×2 RA4CPA · European Russia ×2

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 R4NBV

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: LO56 · 324 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,058 km (approx.)
Last such locator decoded: 2026-08-14 21:24 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	R4NBV S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-14 21:24	160m	-8 / -10	R6OU	-4 / -19	6	✓ Full exchange observed
08-14 21:13	160m	-13 / -3	RU3DBT	-18 / -11	4	✓ Full exchange observed
08-14 21:12	160m	- / -	DO3VE	+1 / -	3	Partial capture
08-14 21:11	160m	-12 / -	RU9F	- / -	3	Partial capture
08-14 21:06	160m	-8 / +5	UA3AKO	+9 / -4	7	✓ Full exchange observed
08-14 21:05	160m	-6 / -	OM2WQ	+10 / -20	4	✓ Closing observed
08-14 20:59	160m	-14 / -8	RA3VX	-10 / -12	5	✓ Full exchange observed
08-14 20:58	160m	-12 / -2	UA3FH	-20 / -14	4	✓ Full exchange observed
08-14 20:53	160m	- / -	HB9FUR	-12 / -	7	Partial capture
08-14 20:53	160m	-20 / -1	RA7T	0 / -12	4	✓ Full exchange observed
08-14 20:51	160m	- / -	IK0HBN	+9 / -	18	Partial capture
08-14 20:50	160m	-18 / +5	RA4CA	-2 / -7	5	✓ Full exchange observed
08-14 20:47	80m	-5 / +1	RU3SD	+8 / +3	6	✓ Full exchange observed
08-14 20:46	80m	- / -10	OE9GWV	-13 / -	4	Partial capture
08-14 20:44	80m	-6 / -14	G4YKQ	+1 / -16	8	✓ Full exchange observed
08-14 20:42	80m	- / -3	RZ4AT	+1 / -	2	✓ Closing fragment
08-14 20:39	80m	-1 / -	RN3YN	- / -	3	Partial capture
08-14 20:27	80m	-5 / -	RA3MT	-12 / -2	2	✓ Closing observed
08-14 20:24	160m	- / -	RA6YDX	-13 / -	3	Partial capture
08-14 20:23	160m	-12 / -	R3ZMM	-1 / -13	4	✓ Closing observed
08-14 20:23	160m	- / -	UA3LKM	-14 / -	8	Partial capture
08-14 20:14	160m	-12 / +1	R4RN	-4 / +1	4	✓ Full exchange observed
08-14 20:12	160m	-9 / -	RD9FC	- / -13	3	✓ Closing fragment
08-14 20:08	160m	-10 / -	R6TY	- / -18	2	✓ Closing fragment
08-14 20:08	160m	-10 / -7	UA1AEL	-5 / -5	7	✓ Full exchange observed
08-14 20:06	160m	-10 / 0	RA3LCI	-21 / -18	3	✓ Full exchange observed
08-14 20:05	160m	-14 / -	R0QBB/3	- / -22	2	Partial capture
08-14 20:00	160m	- / -	RA6YDX	-8 / -	2	Partial capture
08-14 19:59	160m	-8 / 0	R3UG	-10 / -8	2	Partial capture
08-14 19:57	160m	-8 / -2	RU4SO	-12 / +3	4	✓ Full exchange observed
08-14 19:55	160m	-12 / -19	UA3ZSI	-9 / -14	6	✓ Full exchange observed
08-14 19:55	160m	-9 / -	R1TAX	- / -13	2	✓ Closing fragment
08-14 19:54	160m	-12 / -	EU3A	+12 / -19	5	✓ Closing observed
08-14 19:52	160m	-12 / -5	YL3CW	-1 / -10	5	✓ Full exchange observed
08-14 19:51	160m	- / -12	UA3PY	-7 / -	2	✓ Closing fragment
08-14 19:49	160m	-16 / -6	R0QBB/3	-3 / -	5	Partial capture
08-14 19:43	160m	- / -9	RZ6CO	-14 / -	3	Partial capture
08-14 19:43	160m	- / -	RA6YDX	-4 / -	2	Partial capture
08-14 19:42	160m	-13 / -7	UB1Q	-16 / -	4	✓ Closing observed
08-14 19:38	160m	- / -6	R7NO	-1 / -	3	✓ Closing fragment
08-14 19:36	160m	-14 / -6	R7OF	-3 / -	3	✓ Closing observed
08-14 19:34	160m	- / -13	RZ6CO	-6 / -	4	Partial capture
08-14 19:30	160m	-15 / -10	RN1CW	-13 / -	4	✓ Closing observed
08-14 19:27	160m	- / -	RA6YDX	-17 / -	2	Partial capture
08-14 19:26	160m	-12 / +3	RU3T	-6 / -1	5	✓ Full exchange observed
08-14 19:18	160m	- / -	RA6YDX	-12 / -	2	Partial capture
08-14 19:18	160m	- / -10	RZ6CO	-4 / -	2	Partial capture
08-14 19:18	160m	- / -	RU3XU	-10 / -	2	Partial capture
08-14 19:17	160m	- / -7	RT2P	-4 / -	3	✓ Closing fragment
08-14 19:12	160m	- / -4	R2SN	-9 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
211315  +3  623  R4NBV DO3VE JO52
211345 -20 1602  R4NBV RU3DBT -03
211400 -15 2322  RU3DBT R4NBV R-11
211415 -16 1602  R4NBV RU3DBT RR73
211430 -11 2322  RU3DBT R4NBV 73
211600  -9 2322  RU9F R4NBV LO56 (x2)
212030  -6 2322  CQ R4NBV LO56 (x2)
212400  -9 2322  R6OU R4NBV LO56 (x2)
212445  -2 2320  R4NBV R6OU -10
212500  -9 2322  R6OU R4NBV R-19
212515  -5 2321  R4NBV R6OU RR73
212530  -9 2322  R6OU R4NBV 73

80m

UTC    dB Audio  Message
204500  -9 1953  G4YKQ R4NBV LO56
204515  +3 2747  R4NBV G4YKQ -14
204530  -5 1952  G4YKQ R4NBV R-16
204545  -2 2747  R4NBV G4YKQ RR73
204600  -5 1952  G4YKQ R4NBV 73
204615 -14 1450  R4NBV OE9GWV -10 (x2)
204700  +0 1952  RU3SD R4NBV LO56 (x2)
204745  +6 1003  R4NBV RU3SD +01
204800  -6 1952  RU3SD R4NBV R+03
204815  +9 1003  R4NBV RU3SD RR73
204815  -9 1450  R4NBV OE9GWV -10
204830  -9 1953  RU3SD R4NBV 73
204845 -21 1450  R4NBV OE9GWV -10

40m

UTC    dB Audio  Message
205745 -13 1056  R4NBV R2EA RR73
210215 -11 2600  R4NBV R2GFD R+04
210615  -3 2598  R4NBV G0DYW R-06 (x2)
211315 -11 2599  EA1AA R4NBV R-09
170215  -9 2603  R4NBV PE1NPS JO22
170300  -6  744  R4NBV EW4DX -05 (x2)
170430 -10 2427  R4NBV EV1R +02
174545  -4 2657  R4NBV R4UAS KO85
205615 -11 2709  R4NBV UB4CJV -12 (x4)
210215 -14 1233  R4NBV R3EDI RR73

10m

UTC    dB Audio  Message
201345  -7 2702  R4NBV PT2TD +03 (x2)
195830 -11 2110  R4NBV R4DI -07 (x3)
200300  -9 1106  R4NBV PY7XC -16 (x2)
193015 -11  667  R4NBV RA3LBW -04 (x2)
194045 -21 1595  R4NBV CT7AUT -25 (x2)
194900 -11 1214  R4NBV EA8UP -24 (x2)
195030  -9  682  R4NBV SV2CLJ -11 (x2)

20m

UTC    dB Audio  Message
043645  -9 2680  KE4EB R4NBV LO56
060900 -13 1026  R4NBV N8HRZ -14 (x2)
163945  -4 2900  R4NBV IU5HIU JN53 (x3)

60m

UTC    dB Audio  Message
175030 -16 2233  R4NBV PE1NPS JO22

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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