VU3OSA — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: India Most frequent locator attributed to this token: MK69

Receiver-side FT8 activity involving VU3OSA, decoded by SO8OO in southeastern Poland. 1,066 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-10.

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 1,066 FT8 messages attributed to VU3OSA as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%), followed by 40 m (0%). Most decodes (62%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (65%); the estimated median was -12 dB.

Overview

1,066

Messages attributed

UTC dates decoded

121

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 4 20m · 1,062

First attributed message: 2026-06-06
Last attributed message: 2026-10-10 19:50 UTC

Observed FT8 message patterns

Attributed sample: 1,066 messages
Active dates: 11 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -16 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 175, moderate (-15 to -9 dB) 694, strong (≥ -8 dB) 197.

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 VU3OSA in decoded directed-looking exchanges:

9A3EYA · Croatia 9A5AGY · Croatia AN5CV · Spain DC4DI · Fed. Rep. of Germany DF8XC · Fed. Rep. of Germany DK1HZ · Fed. Rep. of Germany DL9FCY · Fed. Rep. of Germany DM9EE · Fed. Rep. of Germany EA1ESW · Spain EA3FP · Spain EA5FDA · Spain EU1KI · Belarus

Most frequent locator attributed to VU3OSA

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: MK69 · 925 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 5,620 km (approx.)
Last such locator decoded: 2026-06-20 03:13 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	VU3OSA S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-18 01:36	40m	- / -	RV6F	-7 / -	4	Partial capture
10-18 01:20	40m	- / -	F4HKP	-7 / -	5	Partial capture
10-18 00:47	40m	- / -20	HI8ML	+7 / -	4	✓ Closing fragment
10-18 00:42	40m	- / -	RJ3DC	-24 / -	2	Partial capture
10-17 23:18	40m	- / -11	DF3GY	-12 / -	3	Partial capture
10-17 21:44	40m	- / -	PA2DX	-12 / -	2	Partial capture
10-17 21:42	40m	- / -17	EA5FDA	-13 / -	3	✓ Closing fragment
10-17 21:31	40m	- / -	F4MBU	-2 / -	3	Partial capture
10-17 21:23	40m	- / -	RU6C	+5 / -	5	Partial capture
10-17 21:23	40m	- / -13	UA9SY	-11 / -	6	Partial capture
10-17 21:22	40m	- / -	IU3ODX	-12 / -	2	Partial capture
10-17 21:02	40m	- / -	G1USB	0 / -	2	Partial capture
10-17 20:55	40m	- / -	IK1EQE	-6 / -	3	Partial capture
10-17 20:54	40m	- / -	PA7OB	-12 / -	2	Partial capture
10-17 20:33	40m	- / -	M6RTA	+4 / -	4	Partial capture
10-17 20:30	40m	- / -	IK5AEQ	-6 / -	2	Partial capture
10-17 20:25	40m	- / -	LA2VLA	-19 / -	2	Partial capture
10-17 20:23	40m	- / -	G4DZE	+1 / -	2	Partial capture
10-17 20:23	40m	- / -	PA7OB	-12 / -	2	Partial capture
10-17 20:17	40m	- / -	GD3SKZ	-13 / -	6	Partial capture
10-17 20:13	40m	- / -	GD3SKZ	-10 / -	3	Partial capture
10-17 20:13	40m	- / -	PD2RAM	-11 / -	7	Partial capture
10-17 20:05	40m	- / -	I1YDT	0 / -	3	Partial capture
10-17 19:18	40m	- / -23	YO3AIO	-9 / -	2	✓ Closing fragment
10-17 19:13	40m	- / -	HA5PT	-11 / -	3	✓ Closing fragment
10-17 19:06	40m	- / -24	IZ8PPI	-23 / -	2	Partial capture
10-17 18:59	40m	- / -20	UA1ALL	-2 / -	3	Partial capture
10-17 18:59	40m	- / -	R3LDQ	-8 / -	3	Partial capture
10-17 18:55	40m	- / -	PA25ASP/J	-5 / -	3	Partial capture
10-17 18:54	40m	- / -	DH0BRO	-2 / -	6	Partial capture
10-17 18:41	40m	- / -16	9A6CC	+6 / -	3	Partial capture
10-17 18:23	40m	- / -	DK8HM	+2 / -	6	Partial capture
10-17 18:20	40m	- / -	F4MTS	+3 / -	4	Partial capture
10-17 18:12	40m	- / -13	RA6FCU	-2 / -	2	✓ Closing fragment
10-17 18:09	40m	- / -21	YL2TM	-4 / -	2	Partial capture
10-17 18:08	40m	- / -	DL1SMA	+12 / -	3	Partial capture
10-17 18:07	40m	- / -13	RA4APF	-16 / -	2	Partial capture
10-17 18:03	40m	- / -	RN3N	-7 / -	4	Partial capture
10-17 17:58	40m	- / -17	RT7B	-4 / -	2	Partial capture
10-17 17:51	40m	- / -	DK1XAM	-9 / -	3	Partial capture
10-17 17:50	40m	- / -16	R6DVS	+2 / -	2	Partial capture
10-17 17:46	40m	- / -19	UA9SAV	-17 / -	2	✓ Closing fragment
10-17 17:45	40m	- / -	SN5MV	-1 / -	6	Partial capture
10-17 17:36	40m	- / -14	IZ4TNW	-13 / -	4	Partial capture
10-17 17:33	40m	- / -	DK8HM	+4 / -	5	Partial capture
10-17 17:29	40m	- / +7	GJ0KYZ	-3 / -	3	Partial capture
10-17 17:28	40m	- / -	UR5KC	-9 / -	3	Partial capture
10-17 17:24	40m	- / -	S57D	+5 / -	18	Partial capture
10-17 17:20	40m	- / -	OH8SE	-10 / -	2	Partial capture
10-17 17:18	40m	- / -23	R2GFN	-1 / -	7	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
004745  +7 3002  VU3OSA HI8ML FK48 (x3)
012045  -7 1541  VU3OSA F4HKP JN18 (x5)
013615  -4 1689  VU3OSA RV6F LN14 (x3)
013715 -24 1690  VU3OSA RJ3DC KO95
013745  -9 1462  VU3OSA RV6F LN14
015345 -17 1382  VU3OSA 4Z1KN KM71
015515 -24 1690  VU3OSA RJ3DC KO95

80m

UTC    dB Audio  Message
213915  +4 1504  VU3OSA OM0RX JN88 (x4)
202845  +1 2515  VU3OSA DH0BRO JO62
185345  -1 2679  VU3OSA UR4LRG KO80 (x3)
192345  +1 2312  VU3OSA EW8AK KO52

160m

UTC    dB Audio  Message
204415  -7 1502  VU3OSA OM0RX JN88 (x3)

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee